Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1 | /* |
Stefan Roese | 88fbf93 | 2010-04-15 16:07:28 +0200 | [diff] [blame] | 2 | * arch/powerpc/cpu/ppc4xx/44x_spd_ddr2.c |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 3 | * This SPD SDRAM detection code supports AMCC PPC44x cpu's with a |
Stefan Roese | 964754e | 2008-04-30 10:49:43 +0200 | [diff] [blame] | 4 | * DDR2 controller (non Denali Core). Those currently are: |
| 5 | * |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 6 | * 405: 405EX(r) |
Stefan Roese | 964754e | 2008-04-30 10:49:43 +0200 | [diff] [blame] | 7 | * 440/460: 440SP/440SPe/460EX/460GT |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 8 | * |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 9 | * Copyright (c) 2008 Nuovation System Designs, LLC |
| 10 | * Grant Erickson <gerickson@nuovations.com> |
| 11 | |
Stefan Roese | cb9ebd0 | 2009-09-28 17:33:45 +0200 | [diff] [blame] | 12 | * (C) Copyright 2007-2009 |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 13 | * Stefan Roese, DENX Software Engineering, sr@denx.de. |
| 14 | * |
| 15 | * COPYRIGHT AMCC CORPORATION 2004 |
| 16 | * |
| 17 | * See file CREDITS for list of people who contributed to this |
| 18 | * project. |
| 19 | * |
| 20 | * This program is free software; you can redistribute it and/or |
| 21 | * modify it under the terms of the GNU General Public License as |
| 22 | * published by the Free Software Foundation; either version 2 of |
| 23 | * the License, or (at your option) any later version. |
| 24 | * |
| 25 | * This program is distributed in the hope that it will be useful, |
| 26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 28 | * GNU General Public License for more details. |
| 29 | * |
| 30 | * You should have received a copy of the GNU General Public License |
| 31 | * along with this program; if not, write to the Free Software |
| 32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 33 | * MA 02111-1307 USA |
| 34 | * |
| 35 | */ |
| 36 | |
| 37 | /* define DEBUG for debugging output (obviously ;-)) */ |
| 38 | #if 0 |
| 39 | #define DEBUG |
| 40 | #endif |
| 41 | |
| 42 | #include <common.h> |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 43 | #include <command.h> |
Stefan Roese | 247e9d7 | 2010-09-09 19:18:00 +0200 | [diff] [blame] | 44 | #include <asm/ppc4xx.h> |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 45 | #include <i2c.h> |
| 46 | #include <asm/io.h> |
| 47 | #include <asm/processor.h> |
| 48 | #include <asm/mmu.h> |
Stefan Roese | 286b81b | 2008-04-29 13:57:07 +0200 | [diff] [blame] | 49 | #include <asm/cache.h> |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 50 | |
Stefan Roese | cb9ebd0 | 2009-09-28 17:33:45 +0200 | [diff] [blame] | 51 | #include "ecc.h" |
| 52 | |
Stefan Roese | 2001a33 | 2008-07-10 15:32:32 +0200 | [diff] [blame] | 53 | #define PPC4xx_IBM_DDR2_DUMP_REGISTER(mnemonic) \ |
| 54 | do { \ |
| 55 | u32 data; \ |
| 56 | mfsdram(SDRAM_##mnemonic, data); \ |
| 57 | printf("%20s[%02x] = 0x%08X\n", \ |
| 58 | "SDRAM_" #mnemonic, SDRAM_##mnemonic, data); \ |
| 59 | } while (0) |
| 60 | |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 61 | #define PPC4xx_IBM_DDR2_DUMP_MQ_REGISTER(mnemonic) \ |
| 62 | do { \ |
| 63 | u32 data; \ |
| 64 | data = mfdcr(SDRAM_##mnemonic); \ |
| 65 | printf("%20s[%02x] = 0x%08X\n", \ |
| 66 | "SDRAM_" #mnemonic, SDRAM_##mnemonic, data); \ |
| 67 | } while (0) |
| 68 | |
Stefan Roese | c3bcfce | 2010-05-25 15:33:14 +0200 | [diff] [blame] | 69 | #if !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL) |
| 70 | static void update_rdcc(void) |
| 71 | { |
| 72 | u32 val; |
| 73 | |
| 74 | /* |
| 75 | * Complete RDSS configuration as mentioned on page 7 of the AMCC |
| 76 | * PowerPC440SP/SPe DDR2 application note: |
| 77 | * "DDR1/DDR2 Initialization Sequence and Dynamic Tuning" |
| 78 | * |
| 79 | * Or item #10 "10. Complete RDSS configuration" in chapter |
| 80 | * "22.2.9 SDRAM Initialization" of AMCC PPC460EX/EXr/GT users |
| 81 | * manual. |
| 82 | */ |
| 83 | mfsdram(SDRAM_RTSR, val); |
| 84 | if ((val & SDRAM_RTSR_TRK1SM_MASK) == SDRAM_RTSR_TRK1SM_ATPLS1) { |
| 85 | mfsdram(SDRAM_RDCC, val); |
| 86 | if ((val & SDRAM_RDCC_RDSS_MASK) != SDRAM_RDCC_RDSS_T4) { |
| 87 | val += 0x40000000; |
| 88 | mtsdram(SDRAM_RDCC, val); |
| 89 | } |
| 90 | } |
| 91 | } |
| 92 | #endif |
| 93 | |
Adam Graham | 446eb8d | 2008-10-08 10:13:14 -0700 | [diff] [blame] | 94 | #if defined(CONFIG_440) |
| 95 | /* |
| 96 | * This DDR2 setup code can dynamically setup the TLB entries for the DDR2 |
| 97 | * memory region. Right now the cache should still be disabled in U-Boot |
| 98 | * because of the EMAC driver, that need its buffer descriptor to be located |
| 99 | * in non cached memory. |
| 100 | * |
| 101 | * If at some time this restriction doesn't apply anymore, just define |
| 102 | * CONFIG_4xx_DCACHE in the board config file and this code should setup |
| 103 | * everything correctly. |
| 104 | */ |
| 105 | #ifdef CONFIG_4xx_DCACHE |
| 106 | /* enable caching on SDRAM */ |
| 107 | #define MY_TLB_WORD2_I_ENABLE 0 |
| 108 | #else |
| 109 | /* disable caching on SDRAM */ |
| 110 | #define MY_TLB_WORD2_I_ENABLE TLB_WORD2_I_ENABLE |
| 111 | #endif /* CONFIG_4xx_DCACHE */ |
Felix Radensky | 0e92536 | 2009-09-27 23:56:12 +0200 | [diff] [blame] | 112 | |
| 113 | void dcbz_area(u32 start_address, u32 num_bytes); |
Adam Graham | 446eb8d | 2008-10-08 10:13:14 -0700 | [diff] [blame] | 114 | #endif /* CONFIG_440 */ |
| 115 | |
Felix Radensky | 0e92536 | 2009-09-27 23:56:12 +0200 | [diff] [blame] | 116 | #define MAXRANKS 4 |
| 117 | #define MAXBXCF 4 |
| 118 | |
| 119 | #define MULDIV64(m1, m2, d) (u32)(((u64)(m1) * (u64)(m2)) / (u64)(d)) |
| 120 | |
Stefan Roese | cb9ebd0 | 2009-09-28 17:33:45 +0200 | [diff] [blame] | 121 | #if !defined(CONFIG_NAND_SPL) |
Felix Radensky | 0e92536 | 2009-09-27 23:56:12 +0200 | [diff] [blame] | 122 | /*-----------------------------------------------------------------------------+ |
| 123 | * sdram_memsize |
| 124 | *-----------------------------------------------------------------------------*/ |
Stefan Roese | cb9ebd0 | 2009-09-28 17:33:45 +0200 | [diff] [blame] | 125 | phys_size_t sdram_memsize(void) |
Felix Radensky | 0e92536 | 2009-09-27 23:56:12 +0200 | [diff] [blame] | 126 | { |
| 127 | phys_size_t mem_size; |
| 128 | unsigned long mcopt2; |
| 129 | unsigned long mcstat; |
| 130 | unsigned long mb0cf; |
| 131 | unsigned long sdsz; |
| 132 | unsigned long i; |
| 133 | |
| 134 | mem_size = 0; |
| 135 | |
| 136 | mfsdram(SDRAM_MCOPT2, mcopt2); |
| 137 | mfsdram(SDRAM_MCSTAT, mcstat); |
| 138 | |
| 139 | /* DDR controller must be enabled and not in self-refresh. */ |
| 140 | /* Otherwise memsize is zero. */ |
| 141 | if (((mcopt2 & SDRAM_MCOPT2_DCEN_MASK) == SDRAM_MCOPT2_DCEN_ENABLE) |
| 142 | && ((mcopt2 & SDRAM_MCOPT2_SREN_MASK) == SDRAM_MCOPT2_SREN_EXIT) |
| 143 | && ((mcstat & (SDRAM_MCSTAT_MIC_MASK | SDRAM_MCSTAT_SRMS_MASK)) |
| 144 | == (SDRAM_MCSTAT_MIC_COMP | SDRAM_MCSTAT_SRMS_NOT_SF))) { |
| 145 | for (i = 0; i < MAXBXCF; i++) { |
| 146 | mfsdram(SDRAM_MB0CF + (i << 2), mb0cf); |
| 147 | /* Banks enabled */ |
| 148 | if ((mb0cf & SDRAM_BXCF_M_BE_MASK) == SDRAM_BXCF_M_BE_ENABLE) { |
| 149 | #if defined(CONFIG_440) |
| 150 | sdsz = mfdcr_any(SDRAM_R0BAS + i) & SDRAM_RXBAS_SDSZ_MASK; |
| 151 | #else |
| 152 | sdsz = mb0cf & SDRAM_RXBAS_SDSZ_MASK; |
| 153 | #endif |
| 154 | switch(sdsz) { |
| 155 | case SDRAM_RXBAS_SDSZ_8: |
| 156 | mem_size+=8; |
| 157 | break; |
| 158 | case SDRAM_RXBAS_SDSZ_16: |
| 159 | mem_size+=16; |
| 160 | break; |
| 161 | case SDRAM_RXBAS_SDSZ_32: |
| 162 | mem_size+=32; |
| 163 | break; |
| 164 | case SDRAM_RXBAS_SDSZ_64: |
| 165 | mem_size+=64; |
| 166 | break; |
| 167 | case SDRAM_RXBAS_SDSZ_128: |
| 168 | mem_size+=128; |
| 169 | break; |
| 170 | case SDRAM_RXBAS_SDSZ_256: |
| 171 | mem_size+=256; |
| 172 | break; |
| 173 | case SDRAM_RXBAS_SDSZ_512: |
| 174 | mem_size+=512; |
| 175 | break; |
| 176 | case SDRAM_RXBAS_SDSZ_1024: |
| 177 | mem_size+=1024; |
| 178 | break; |
| 179 | case SDRAM_RXBAS_SDSZ_2048: |
| 180 | mem_size+=2048; |
| 181 | break; |
| 182 | case SDRAM_RXBAS_SDSZ_4096: |
| 183 | mem_size+=4096; |
| 184 | break; |
| 185 | default: |
| 186 | printf("WARNING: Unsupported bank size (SDSZ=0x%lx)!\n" |
| 187 | , sdsz); |
| 188 | mem_size=0; |
| 189 | break; |
| 190 | } |
| 191 | } |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | return mem_size << 20; |
| 196 | } |
| 197 | |
| 198 | /*-----------------------------------------------------------------------------+ |
Stefan Roese | cb9ebd0 | 2009-09-28 17:33:45 +0200 | [diff] [blame] | 199 | * is_ecc_enabled |
| 200 | *-----------------------------------------------------------------------------*/ |
| 201 | static unsigned long is_ecc_enabled(void) |
| 202 | { |
| 203 | unsigned long val; |
| 204 | |
| 205 | mfsdram(SDRAM_MCOPT1, val); |
| 206 | |
| 207 | return SDRAM_MCOPT1_MCHK_CHK_DECODE(val); |
| 208 | } |
| 209 | |
| 210 | /*-----------------------------------------------------------------------------+ |
Felix Radensky | 0e92536 | 2009-09-27 23:56:12 +0200 | [diff] [blame] | 211 | * board_add_ram_info |
| 212 | *-----------------------------------------------------------------------------*/ |
| 213 | void board_add_ram_info(int use_default) |
| 214 | { |
| 215 | PPC4xx_SYS_INFO board_cfg; |
| 216 | u32 val; |
| 217 | |
| 218 | if (is_ecc_enabled()) |
| 219 | puts(" (ECC"); |
| 220 | else |
| 221 | puts(" (ECC not"); |
| 222 | |
| 223 | get_sys_info(&board_cfg); |
| 224 | |
Stefan Roese | cb9ebd0 | 2009-09-28 17:33:45 +0200 | [diff] [blame] | 225 | #if defined(CONFIG_405EX) |
| 226 | val = board_cfg.freqPLB; |
| 227 | #else |
Felix Radensky | 0e92536 | 2009-09-27 23:56:12 +0200 | [diff] [blame] | 228 | mfsdr(SDR0_DDR0, val); |
| 229 | val = MULDIV64((board_cfg.freqPLB), SDR0_DDR0_DDRM_DECODE(val), 1); |
Felix Radensky | 0e92536 | 2009-09-27 23:56:12 +0200 | [diff] [blame] | 230 | #endif |
| 231 | printf(" enabled, %d MHz", (val * 2) / 1000000); |
| 232 | |
| 233 | mfsdram(SDRAM_MMODE, val); |
| 234 | val = (val & SDRAM_MMODE_DCL_MASK) >> 4; |
| 235 | printf(", CL%d)", val); |
| 236 | } |
Stefan Roese | cb9ebd0 | 2009-09-28 17:33:45 +0200 | [diff] [blame] | 237 | #endif /* !CONFIG_NAND_SPL */ |
Felix Radensky | 0e92536 | 2009-09-27 23:56:12 +0200 | [diff] [blame] | 238 | |
Stefan Roese | 2001a33 | 2008-07-10 15:32:32 +0200 | [diff] [blame] | 239 | #if defined(CONFIG_SPD_EEPROM) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 240 | |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 241 | /*-----------------------------------------------------------------------------+ |
| 242 | * Defines |
| 243 | *-----------------------------------------------------------------------------*/ |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 244 | #define SDRAM_DDR1 1 |
| 245 | #define SDRAM_DDR2 2 |
| 246 | #define SDRAM_NONE 0 |
| 247 | |
Wolfgang Denk | 70df7bc | 2007-06-22 23:59:00 +0200 | [diff] [blame] | 248 | #define MAXDIMMS 2 |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 249 | #define MAX_SPD_BYTES 256 /* Max number of bytes on the DIMM's SPD EEPROM */ |
| 250 | |
| 251 | #define ONE_BILLION 1000000000 |
| 252 | |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 253 | #define CMD_NOP (7 << 19) |
| 254 | #define CMD_PRECHARGE (2 << 19) |
| 255 | #define CMD_REFRESH (1 << 19) |
| 256 | #define CMD_EMR (0 << 19) |
| 257 | #define CMD_READ (5 << 19) |
| 258 | #define CMD_WRITE (4 << 19) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 259 | |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 260 | #define SELECT_MR (0 << 16) |
| 261 | #define SELECT_EMR (1 << 16) |
| 262 | #define SELECT_EMR2 (2 << 16) |
| 263 | #define SELECT_EMR3 (3 << 16) |
| 264 | |
| 265 | /* MR */ |
| 266 | #define DLL_RESET 0x00000100 |
| 267 | |
| 268 | #define WRITE_RECOV_2 (1 << 9) |
| 269 | #define WRITE_RECOV_3 (2 << 9) |
| 270 | #define WRITE_RECOV_4 (3 << 9) |
| 271 | #define WRITE_RECOV_5 (4 << 9) |
| 272 | #define WRITE_RECOV_6 (5 << 9) |
| 273 | |
| 274 | #define BURST_LEN_4 0x00000002 |
| 275 | |
| 276 | /* EMR */ |
| 277 | #define ODT_0_OHM 0x00000000 |
| 278 | #define ODT_50_OHM 0x00000044 |
| 279 | #define ODT_75_OHM 0x00000004 |
| 280 | #define ODT_150_OHM 0x00000040 |
| 281 | |
| 282 | #define ODS_FULL 0x00000000 |
| 283 | #define ODS_REDUCED 0x00000002 |
Prodyut Hazarika | 52b6bec | 2008-08-27 16:39:00 -0700 | [diff] [blame] | 284 | #define OCD_CALIB_DEF 0x00000380 |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 285 | |
| 286 | /* defines for ODT (On Die Termination) of the 440SP(e) DDR2 controller */ |
| 287 | #define ODT_EB0R (0x80000000 >> 8) |
| 288 | #define ODT_EB0W (0x80000000 >> 7) |
| 289 | #define CALC_ODT_R(n) (ODT_EB0R << (n << 1)) |
| 290 | #define CALC_ODT_W(n) (ODT_EB0W << (n << 1)) |
| 291 | #define CALC_ODT_RW(n) (CALC_ODT_R(n) | CALC_ODT_W(n)) |
| 292 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 293 | /* Defines for the Read Cycle Delay test */ |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 294 | #define NUMMEMTESTS 8 |
| 295 | #define NUMMEMWORDS 8 |
Stefan Roese | bd2adeb | 2007-07-16 09:57:00 +0200 | [diff] [blame] | 296 | #define NUMLOOPS 64 /* memory test loops */ |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 297 | |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 298 | /* |
Stefan Roese | 0203a97 | 2008-07-09 17:33:57 +0200 | [diff] [blame] | 299 | * Newer PPC's like 440SPe, 460EX/GT can be equipped with more than 2GB of SDRAM. |
| 300 | * To support such configurations, we "only" map the first 2GB via the TLB's. We |
| 301 | * need some free virtual address space for the remaining peripherals like, SoC |
| 302 | * devices, FLASH etc. |
| 303 | * |
| 304 | * Note that ECC is currently not supported on configurations with more than 2GB |
| 305 | * SDRAM. This is because we only map the first 2GB on such systems, and therefore |
| 306 | * the ECC parity byte of the remaining area can't be written. |
| 307 | */ |
Stefan Roese | 0203a97 | 2008-07-09 17:33:57 +0200 | [diff] [blame] | 308 | |
| 309 | /* |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 310 | * Board-specific Platform code can reimplement spd_ddr_init_hang () if needed |
| 311 | */ |
| 312 | void __spd_ddr_init_hang (void) |
| 313 | { |
| 314 | hang (); |
| 315 | } |
| 316 | void spd_ddr_init_hang (void) __attribute__((weak, alias("__spd_ddr_init_hang"))); |
| 317 | |
Stefan Roese | bd2adeb | 2007-07-16 09:57:00 +0200 | [diff] [blame] | 318 | /* |
| 319 | * To provide an interface for board specific config values in this common |
| 320 | * DDR setup code, we implement he "weak" default functions here. They return |
| 321 | * the default value back to the caller. |
| 322 | * |
| 323 | * Please see include/configs/yucca.h for an example fora board specific |
| 324 | * implementation. |
| 325 | */ |
| 326 | u32 __ddr_wrdtr(u32 default_val) |
| 327 | { |
| 328 | return default_val; |
| 329 | } |
| 330 | u32 ddr_wrdtr(u32) __attribute__((weak, alias("__ddr_wrdtr"))); |
| 331 | |
| 332 | u32 __ddr_clktr(u32 default_val) |
| 333 | { |
| 334 | return default_val; |
| 335 | } |
| 336 | u32 ddr_clktr(u32) __attribute__((weak, alias("__ddr_clktr"))); |
| 337 | |
Heiko Schocher | 633e03a | 2007-06-22 19:11:54 +0200 | [diff] [blame] | 338 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 339 | /* Private Structure Definitions */ |
| 340 | |
| 341 | /* enum only to ease code for cas latency setting */ |
| 342 | typedef enum ddr_cas_id { |
| 343 | DDR_CAS_2 = 20, |
| 344 | DDR_CAS_2_5 = 25, |
| 345 | DDR_CAS_3 = 30, |
| 346 | DDR_CAS_4 = 40, |
| 347 | DDR_CAS_5 = 50 |
| 348 | } ddr_cas_id_t; |
| 349 | |
| 350 | /*-----------------------------------------------------------------------------+ |
| 351 | * Prototypes |
| 352 | *-----------------------------------------------------------------------------*/ |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 353 | static void get_spd_info(unsigned long *dimm_populated, |
| 354 | unsigned char *iic0_dimm_addr, |
| 355 | unsigned long num_dimm_banks); |
| 356 | static void check_mem_type(unsigned long *dimm_populated, |
| 357 | unsigned char *iic0_dimm_addr, |
| 358 | unsigned long num_dimm_banks); |
| 359 | static void check_frequency(unsigned long *dimm_populated, |
| 360 | unsigned char *iic0_dimm_addr, |
| 361 | unsigned long num_dimm_banks); |
| 362 | static void check_rank_number(unsigned long *dimm_populated, |
| 363 | unsigned char *iic0_dimm_addr, |
| 364 | unsigned long num_dimm_banks); |
| 365 | static void check_voltage_type(unsigned long *dimm_populated, |
| 366 | unsigned char *iic0_dimm_addr, |
| 367 | unsigned long num_dimm_banks); |
| 368 | static void program_memory_queue(unsigned long *dimm_populated, |
| 369 | unsigned char *iic0_dimm_addr, |
| 370 | unsigned long num_dimm_banks); |
| 371 | static void program_codt(unsigned long *dimm_populated, |
| 372 | unsigned char *iic0_dimm_addr, |
| 373 | unsigned long num_dimm_banks); |
| 374 | static void program_mode(unsigned long *dimm_populated, |
| 375 | unsigned char *iic0_dimm_addr, |
| 376 | unsigned long num_dimm_banks, |
Wolfgang Denk | b38e0df | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 377 | ddr_cas_id_t *selected_cas, |
| 378 | int *write_recovery); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 379 | static void program_tr(unsigned long *dimm_populated, |
| 380 | unsigned char *iic0_dimm_addr, |
| 381 | unsigned long num_dimm_banks); |
| 382 | static void program_rtr(unsigned long *dimm_populated, |
| 383 | unsigned char *iic0_dimm_addr, |
| 384 | unsigned long num_dimm_banks); |
| 385 | static void program_bxcf(unsigned long *dimm_populated, |
| 386 | unsigned char *iic0_dimm_addr, |
| 387 | unsigned long num_dimm_banks); |
| 388 | static void program_copt1(unsigned long *dimm_populated, |
| 389 | unsigned char *iic0_dimm_addr, |
| 390 | unsigned long num_dimm_banks); |
| 391 | static void program_initplr(unsigned long *dimm_populated, |
| 392 | unsigned char *iic0_dimm_addr, |
| 393 | unsigned long num_dimm_banks, |
Wolfgang Denk | b38e0df | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 394 | ddr_cas_id_t selected_cas, |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 395 | int write_recovery); |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 396 | #ifdef CONFIG_DDR_ECC |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 397 | static void program_ecc(unsigned long *dimm_populated, |
| 398 | unsigned char *iic0_dimm_addr, |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 399 | unsigned long num_dimm_banks, |
| 400 | unsigned long tlb_word2_i_value); |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 401 | #endif |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 402 | #if !defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION) |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 403 | static void program_DQS_calibration(unsigned long *dimm_populated, |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 404 | unsigned char *iic0_dimm_addr, |
| 405 | unsigned long num_dimm_banks); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 406 | #ifdef HARD_CODED_DQS /* calibration test with hardvalues */ |
Wolfgang Denk | 52232fd | 2007-02-27 14:26:04 +0100 | [diff] [blame] | 407 | static void test(void); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 408 | #else |
Wolfgang Denk | 52232fd | 2007-02-27 14:26:04 +0100 | [diff] [blame] | 409 | static void DQS_calibration_process(void); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 410 | #endif |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 411 | #endif |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 412 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 413 | static unsigned char spd_read(uchar chip, uint addr) |
| 414 | { |
| 415 | unsigned char data[2]; |
| 416 | |
| 417 | if (i2c_probe(chip) == 0) |
| 418 | if (i2c_read(chip, addr, 1, data, 1) == 0) |
| 419 | return data[0]; |
| 420 | |
| 421 | return 0; |
| 422 | } |
| 423 | |
| 424 | /*-----------------------------------------------------------------------------+ |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 425 | * initdram. Initializes the 440SP Memory Queue and DDR SDRAM controller. |
| 426 | * Note: This routine runs from flash with a stack set up in the chip's |
| 427 | * sram space. It is important that the routine does not require .sbss, .bss or |
| 428 | * .data sections. It also cannot call routines that require these sections. |
| 429 | *-----------------------------------------------------------------------------*/ |
| 430 | /*----------------------------------------------------------------------------- |
Wolfgang Denk | 52232fd | 2007-02-27 14:26:04 +0100 | [diff] [blame] | 431 | * Function: initdram |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 432 | * Description: Configures SDRAM memory banks for DDR operation. |
Wolfgang Denk | 52232fd | 2007-02-27 14:26:04 +0100 | [diff] [blame] | 433 | * Auto Memory Configuration option reads the DDR SDRAM EEPROMs |
| 434 | * via the IIC bus and then configures the DDR SDRAM memory |
| 435 | * banks appropriately. If Auto Memory Configuration is |
| 436 | * not used, it is assumed that no DIMM is plugged |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 437 | *-----------------------------------------------------------------------------*/ |
Becky Bruce | bd99ae7 | 2008-06-09 16:03:40 -0500 | [diff] [blame] | 438 | phys_size_t initdram(int board_type) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 439 | { |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 440 | unsigned char iic0_dimm_addr[] = SPD_EEPROM_ADDRESS; |
Felix Radensky | 389672f | 2010-01-19 21:19:06 +0200 | [diff] [blame] | 441 | unsigned long dimm_populated[MAXDIMMS] = {SDRAM_NONE, SDRAM_NONE}; |
Stefan Roese | 4a0f590 | 2008-01-15 10:11:02 +0100 | [diff] [blame] | 442 | unsigned long num_dimm_banks; /* on board dimm banks */ |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 443 | unsigned long val; |
Stefan Roese | 4a0f590 | 2008-01-15 10:11:02 +0100 | [diff] [blame] | 444 | ddr_cas_id_t selected_cas = DDR_CAS_5; /* preset to silence compiler */ |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 445 | int write_recovery; |
Stefan Roese | 0203a97 | 2008-07-09 17:33:57 +0200 | [diff] [blame] | 446 | phys_size_t dram_size = 0; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 447 | |
| 448 | num_dimm_banks = sizeof(iic0_dimm_addr); |
| 449 | |
| 450 | /*------------------------------------------------------------------ |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 451 | * Reset the DDR-SDRAM controller. |
| 452 | *-----------------------------------------------------------------*/ |
Stefan Roese | 95ca5fa | 2010-09-11 09:31:43 +0200 | [diff] [blame] | 453 | mtsdr(SDR0_SRST, SDR0_SRST0_DMC); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 454 | mtsdr(SDR0_SRST, 0x00000000); |
| 455 | |
| 456 | /* |
| 457 | * Make sure I2C controller is initialized |
| 458 | * before continuing. |
| 459 | */ |
| 460 | |
| 461 | /* switch to correct I2C bus */ |
Dirk Eibach | 42b204f | 2013-04-25 02:40:01 +0000 | [diff] [blame^] | 462 | i2c_set_bus_num(CONFIG_SYS_SPD_BUS_NUM); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 463 | |
| 464 | /*------------------------------------------------------------------ |
| 465 | * Clear out the serial presence detect buffers. |
| 466 | * Perform IIC reads from the dimm. Fill in the spds. |
| 467 | * Check to see if the dimm slots are populated |
| 468 | *-----------------------------------------------------------------*/ |
| 469 | get_spd_info(dimm_populated, iic0_dimm_addr, num_dimm_banks); |
| 470 | |
| 471 | /*------------------------------------------------------------------ |
| 472 | * Check the memory type for the dimms plugged. |
| 473 | *-----------------------------------------------------------------*/ |
| 474 | check_mem_type(dimm_populated, iic0_dimm_addr, num_dimm_banks); |
| 475 | |
| 476 | /*------------------------------------------------------------------ |
| 477 | * Check the frequency supported for the dimms plugged. |
| 478 | *-----------------------------------------------------------------*/ |
| 479 | check_frequency(dimm_populated, iic0_dimm_addr, num_dimm_banks); |
| 480 | |
| 481 | /*------------------------------------------------------------------ |
| 482 | * Check the total rank number. |
| 483 | *-----------------------------------------------------------------*/ |
| 484 | check_rank_number(dimm_populated, iic0_dimm_addr, num_dimm_banks); |
| 485 | |
| 486 | /*------------------------------------------------------------------ |
| 487 | * Check the voltage type for the dimms plugged. |
| 488 | *-----------------------------------------------------------------*/ |
| 489 | check_voltage_type(dimm_populated, iic0_dimm_addr, num_dimm_banks); |
| 490 | |
| 491 | /*------------------------------------------------------------------ |
| 492 | * Program SDRAM controller options 2 register |
| 493 | * Except Enabling of the memory controller. |
| 494 | *-----------------------------------------------------------------*/ |
| 495 | mfsdram(SDRAM_MCOPT2, val); |
| 496 | mtsdram(SDRAM_MCOPT2, |
| 497 | (val & |
| 498 | ~(SDRAM_MCOPT2_SREN_MASK | SDRAM_MCOPT2_PMEN_MASK | |
| 499 | SDRAM_MCOPT2_IPTR_MASK | SDRAM_MCOPT2_XSRP_MASK | |
| 500 | SDRAM_MCOPT2_ISIE_MASK)) |
| 501 | | (SDRAM_MCOPT2_SREN_ENTER | SDRAM_MCOPT2_PMEN_DISABLE | |
| 502 | SDRAM_MCOPT2_IPTR_IDLE | SDRAM_MCOPT2_XSRP_ALLOW | |
| 503 | SDRAM_MCOPT2_ISIE_ENABLE)); |
| 504 | |
| 505 | /*------------------------------------------------------------------ |
| 506 | * Program SDRAM controller options 1 register |
| 507 | * Note: Does not enable the memory controller. |
| 508 | *-----------------------------------------------------------------*/ |
| 509 | program_copt1(dimm_populated, iic0_dimm_addr, num_dimm_banks); |
| 510 | |
| 511 | /*------------------------------------------------------------------ |
| 512 | * Set the SDRAM Controller On Die Termination Register |
| 513 | *-----------------------------------------------------------------*/ |
| 514 | program_codt(dimm_populated, iic0_dimm_addr, num_dimm_banks); |
| 515 | |
| 516 | /*------------------------------------------------------------------ |
| 517 | * Program SDRAM refresh register. |
| 518 | *-----------------------------------------------------------------*/ |
| 519 | program_rtr(dimm_populated, iic0_dimm_addr, num_dimm_banks); |
| 520 | |
| 521 | /*------------------------------------------------------------------ |
| 522 | * Program SDRAM mode register. |
| 523 | *-----------------------------------------------------------------*/ |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 524 | program_mode(dimm_populated, iic0_dimm_addr, num_dimm_banks, |
| 525 | &selected_cas, &write_recovery); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 526 | |
| 527 | /*------------------------------------------------------------------ |
| 528 | * Set the SDRAM Write Data/DM/DQS Clock Timing Reg |
| 529 | *-----------------------------------------------------------------*/ |
| 530 | mfsdram(SDRAM_WRDTR, val); |
| 531 | mtsdram(SDRAM_WRDTR, (val & ~(SDRAM_WRDTR_LLWP_MASK | SDRAM_WRDTR_WTR_MASK)) | |
Stefan Roese | bd2adeb | 2007-07-16 09:57:00 +0200 | [diff] [blame] | 532 | ddr_wrdtr(SDRAM_WRDTR_LLWP_1_CYC | SDRAM_WRDTR_WTR_90_DEG_ADV)); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 533 | |
| 534 | /*------------------------------------------------------------------ |
| 535 | * Set the SDRAM Clock Timing Register |
| 536 | *-----------------------------------------------------------------*/ |
| 537 | mfsdram(SDRAM_CLKTR, val); |
Stefan Roese | bd2adeb | 2007-07-16 09:57:00 +0200 | [diff] [blame] | 538 | mtsdram(SDRAM_CLKTR, (val & ~SDRAM_CLKTR_CLKP_MASK) | |
| 539 | ddr_clktr(SDRAM_CLKTR_CLKP_0_DEG)); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 540 | |
| 541 | /*------------------------------------------------------------------ |
| 542 | * Program the BxCF registers. |
| 543 | *-----------------------------------------------------------------*/ |
| 544 | program_bxcf(dimm_populated, iic0_dimm_addr, num_dimm_banks); |
| 545 | |
| 546 | /*------------------------------------------------------------------ |
| 547 | * Program SDRAM timing registers. |
| 548 | *-----------------------------------------------------------------*/ |
| 549 | program_tr(dimm_populated, iic0_dimm_addr, num_dimm_banks); |
| 550 | |
| 551 | /*------------------------------------------------------------------ |
| 552 | * Set the Extended Mode register |
| 553 | *-----------------------------------------------------------------*/ |
| 554 | mfsdram(SDRAM_MEMODE, val); |
| 555 | mtsdram(SDRAM_MEMODE, |
| 556 | (val & ~(SDRAM_MEMODE_DIC_MASK | SDRAM_MEMODE_DLL_MASK | |
| 557 | SDRAM_MEMODE_RTT_MASK | SDRAM_MEMODE_DQS_MASK)) | |
| 558 | (SDRAM_MEMODE_DIC_NORMAL | SDRAM_MEMODE_DLL_ENABLE |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 559 | | SDRAM_MEMODE_RTT_150OHM | SDRAM_MEMODE_DQS_ENABLE)); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 560 | |
| 561 | /*------------------------------------------------------------------ |
| 562 | * Program Initialization preload registers. |
| 563 | *-----------------------------------------------------------------*/ |
| 564 | program_initplr(dimm_populated, iic0_dimm_addr, num_dimm_banks, |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 565 | selected_cas, write_recovery); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 566 | |
| 567 | /*------------------------------------------------------------------ |
| 568 | * Delay to ensure 200usec have elapsed since reset. |
| 569 | *-----------------------------------------------------------------*/ |
| 570 | udelay(400); |
| 571 | |
| 572 | /*------------------------------------------------------------------ |
| 573 | * Set the memory queue core base addr. |
| 574 | *-----------------------------------------------------------------*/ |
| 575 | program_memory_queue(dimm_populated, iic0_dimm_addr, num_dimm_banks); |
| 576 | |
| 577 | /*------------------------------------------------------------------ |
| 578 | * Program SDRAM controller options 2 register |
| 579 | * Enable the memory controller. |
| 580 | *-----------------------------------------------------------------*/ |
| 581 | mfsdram(SDRAM_MCOPT2, val); |
| 582 | mtsdram(SDRAM_MCOPT2, |
| 583 | (val & ~(SDRAM_MCOPT2_SREN_MASK | SDRAM_MCOPT2_DCEN_MASK | |
| 584 | SDRAM_MCOPT2_IPTR_MASK | SDRAM_MCOPT2_ISIE_MASK)) | |
Prodyut Hazarika | 52b6bec | 2008-08-27 16:39:00 -0700 | [diff] [blame] | 585 | SDRAM_MCOPT2_IPTR_EXECUTE); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 586 | |
| 587 | /*------------------------------------------------------------------ |
Prodyut Hazarika | 52b6bec | 2008-08-27 16:39:00 -0700 | [diff] [blame] | 588 | * Wait for IPTR_EXECUTE init sequence to complete. |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 589 | *-----------------------------------------------------------------*/ |
| 590 | do { |
| 591 | mfsdram(SDRAM_MCSTAT, val); |
| 592 | } while ((val & SDRAM_MCSTAT_MIC_MASK) == SDRAM_MCSTAT_MIC_NOTCOMP); |
| 593 | |
Prodyut Hazarika | 52b6bec | 2008-08-27 16:39:00 -0700 | [diff] [blame] | 594 | /* enable the controller only after init sequence completes */ |
| 595 | mfsdram(SDRAM_MCOPT2, val); |
| 596 | mtsdram(SDRAM_MCOPT2, (val | SDRAM_MCOPT2_DCEN_ENABLE)); |
| 597 | |
| 598 | /* Make sure delay-line calibration is done before proceeding */ |
| 599 | do { |
| 600 | mfsdram(SDRAM_DLCR, val); |
| 601 | } while (!(val & SDRAM_DLCR_DLCS_COMPLETE)); |
| 602 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 603 | /* get installed memory size */ |
| 604 | dram_size = sdram_memsize(); |
| 605 | |
Stefan Roese | 0203a97 | 2008-07-09 17:33:57 +0200 | [diff] [blame] | 606 | /* |
| 607 | * Limit size to 2GB |
| 608 | */ |
| 609 | if (dram_size > CONFIG_MAX_MEM_MAPPED) |
| 610 | dram_size = CONFIG_MAX_MEM_MAPPED; |
| 611 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 612 | /* and program tlb entries for this size (dynamic) */ |
Stefan Roese | bd2adeb | 2007-07-16 09:57:00 +0200 | [diff] [blame] | 613 | |
| 614 | /* |
| 615 | * Program TLB entries with caches enabled, for best performace |
| 616 | * while auto-calibrating and ECC generation |
| 617 | */ |
| 618 | program_tlb(0, 0, dram_size, 0); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 619 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 620 | /*------------------------------------------------------------------ |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 621 | * DQS calibration. |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 622 | *-----------------------------------------------------------------*/ |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 623 | #if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION) |
| 624 | DQS_autocalibration(); |
| 625 | #else |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 626 | program_DQS_calibration(dimm_populated, iic0_dimm_addr, num_dimm_banks); |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 627 | #endif |
Stefan Roese | c3bcfce | 2010-05-25 15:33:14 +0200 | [diff] [blame] | 628 | /* |
| 629 | * Now complete RDSS configuration as mentioned on page 7 of the AMCC |
| 630 | * PowerPC440SP/SPe DDR2 application note: |
| 631 | * "DDR1/DDR2 Initialization Sequence and Dynamic Tuning" |
| 632 | */ |
| 633 | update_rdcc(); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 634 | |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 635 | #ifdef CONFIG_DDR_ECC |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 636 | /*------------------------------------------------------------------ |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 637 | * If ecc is enabled, initialize the parity bits. |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 638 | *-----------------------------------------------------------------*/ |
Stefan Roese | bd2adeb | 2007-07-16 09:57:00 +0200 | [diff] [blame] | 639 | program_ecc(dimm_populated, iic0_dimm_addr, num_dimm_banks, 0); |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 640 | #endif |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 641 | |
Stefan Roese | bd2adeb | 2007-07-16 09:57:00 +0200 | [diff] [blame] | 642 | /* |
Stefan Roese | fae16c9 | 2011-09-16 12:54:58 +0200 | [diff] [blame] | 643 | * Flush the dcache before removing the TLB with caches |
| 644 | * enabled. Otherwise this might lead to problems later on, |
| 645 | * e.g. while booting Linux (as seen on ICON-440SPe). |
| 646 | */ |
| 647 | flush_dcache(); |
| 648 | |
| 649 | /* |
Stefan Roese | bd2adeb | 2007-07-16 09:57:00 +0200 | [diff] [blame] | 650 | * Now after initialization (auto-calibration and ECC generation) |
| 651 | * remove the TLB entries with caches enabled and program again with |
| 652 | * desired cache functionality |
| 653 | */ |
| 654 | remove_tlb(0, dram_size); |
| 655 | program_tlb(0, 0, dram_size, MY_TLB_WORD2_I_ENABLE); |
| 656 | |
Grant Erickson | 9416cd9 | 2008-07-09 16:46:35 -0700 | [diff] [blame] | 657 | ppc4xx_ibm_ddr2_register_dump(); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 658 | |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 659 | /* |
| 660 | * Clear potential errors resulting from auto-calibration. |
| 661 | * If not done, then we could get an interrupt later on when |
| 662 | * exceptions are enabled. |
| 663 | */ |
| 664 | set_mcsr(get_mcsr()); |
| 665 | |
Stefan Roese | 0203a97 | 2008-07-09 17:33:57 +0200 | [diff] [blame] | 666 | return sdram_memsize(); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 667 | } |
| 668 | |
| 669 | static void get_spd_info(unsigned long *dimm_populated, |
| 670 | unsigned char *iic0_dimm_addr, |
| 671 | unsigned long num_dimm_banks) |
| 672 | { |
| 673 | unsigned long dimm_num; |
| 674 | unsigned long dimm_found; |
| 675 | unsigned char num_of_bytes; |
| 676 | unsigned char total_size; |
| 677 | |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 678 | dimm_found = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 679 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 680 | num_of_bytes = 0; |
| 681 | total_size = 0; |
| 682 | |
| 683 | num_of_bytes = spd_read(iic0_dimm_addr[dimm_num], 0); |
| 684 | debug("\nspd_read(0x%x) returned %d\n", |
| 685 | iic0_dimm_addr[dimm_num], num_of_bytes); |
| 686 | total_size = spd_read(iic0_dimm_addr[dimm_num], 1); |
| 687 | debug("spd_read(0x%x) returned %d\n", |
| 688 | iic0_dimm_addr[dimm_num], total_size); |
| 689 | |
| 690 | if ((num_of_bytes != 0) && (total_size != 0)) { |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 691 | dimm_populated[dimm_num] = true; |
| 692 | dimm_found = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 693 | debug("DIMM slot %lu: populated\n", dimm_num); |
| 694 | } else { |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 695 | dimm_populated[dimm_num] = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 696 | debug("DIMM slot %lu: Not populated\n", dimm_num); |
| 697 | } |
| 698 | } |
| 699 | |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 700 | if (dimm_found == false) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 701 | printf("ERROR - No memory installed. Install a DDR-SDRAM DIMM.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 702 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 703 | } |
| 704 | } |
| 705 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 706 | |
| 707 | /*------------------------------------------------------------------ |
| 708 | * For the memory DIMMs installed, this routine verifies that they |
| 709 | * really are DDR specific DIMMs. |
| 710 | *-----------------------------------------------------------------*/ |
| 711 | static void check_mem_type(unsigned long *dimm_populated, |
| 712 | unsigned char *iic0_dimm_addr, |
| 713 | unsigned long num_dimm_banks) |
| 714 | { |
| 715 | unsigned long dimm_num; |
| 716 | unsigned long dimm_type; |
| 717 | |
| 718 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 719 | if (dimm_populated[dimm_num] == true) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 720 | dimm_type = spd_read(iic0_dimm_addr[dimm_num], 2); |
| 721 | switch (dimm_type) { |
| 722 | case 1: |
| 723 | printf("ERROR: Standard Fast Page Mode DRAM DIMM detected in " |
| 724 | "slot %d.\n", (unsigned int)dimm_num); |
| 725 | printf("Only DDR and DDR2 SDRAM DIMMs are supported.\n"); |
| 726 | printf("Replace the DIMM module with a supported DIMM.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 727 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 728 | break; |
| 729 | case 2: |
| 730 | printf("ERROR: EDO DIMM detected in slot %d.\n", |
| 731 | (unsigned int)dimm_num); |
| 732 | printf("Only DDR and DDR2 SDRAM DIMMs are supported.\n"); |
| 733 | printf("Replace the DIMM module with a supported DIMM.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 734 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 735 | break; |
| 736 | case 3: |
| 737 | printf("ERROR: Pipelined Nibble DIMM detected in slot %d.\n", |
| 738 | (unsigned int)dimm_num); |
| 739 | printf("Only DDR and DDR2 SDRAM DIMMs are supported.\n"); |
| 740 | printf("Replace the DIMM module with a supported DIMM.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 741 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 742 | break; |
| 743 | case 4: |
| 744 | printf("ERROR: SDRAM DIMM detected in slot %d.\n", |
| 745 | (unsigned int)dimm_num); |
| 746 | printf("Only DDR and DDR2 SDRAM DIMMs are supported.\n"); |
| 747 | printf("Replace the DIMM module with a supported DIMM.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 748 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 749 | break; |
| 750 | case 5: |
| 751 | printf("ERROR: Multiplexed ROM DIMM detected in slot %d.\n", |
| 752 | (unsigned int)dimm_num); |
| 753 | printf("Only DDR and DDR2 SDRAM DIMMs are supported.\n"); |
| 754 | printf("Replace the DIMM module with a supported DIMM.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 755 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 756 | break; |
| 757 | case 6: |
| 758 | printf("ERROR: SGRAM DIMM detected in slot %d.\n", |
| 759 | (unsigned int)dimm_num); |
| 760 | printf("Only DDR and DDR2 SDRAM DIMMs are supported.\n"); |
| 761 | printf("Replace the DIMM module with a supported DIMM.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 762 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 763 | break; |
| 764 | case 7: |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 765 | debug("DIMM slot %lu: DDR1 SDRAM detected\n", dimm_num); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 766 | dimm_populated[dimm_num] = SDRAM_DDR1; |
| 767 | break; |
| 768 | case 8: |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 769 | debug("DIMM slot %lu: DDR2 SDRAM detected\n", dimm_num); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 770 | dimm_populated[dimm_num] = SDRAM_DDR2; |
| 771 | break; |
| 772 | default: |
| 773 | printf("ERROR: Unknown DIMM detected in slot %d.\n", |
| 774 | (unsigned int)dimm_num); |
| 775 | printf("Only DDR1 and DDR2 SDRAM DIMMs are supported.\n"); |
| 776 | printf("Replace the DIMM module with a supported DIMM.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 777 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 778 | break; |
| 779 | } |
| 780 | } |
| 781 | } |
| 782 | for (dimm_num = 1; dimm_num < num_dimm_banks; dimm_num++) { |
| 783 | if ((dimm_populated[dimm_num-1] != SDRAM_NONE) |
| 784 | && (dimm_populated[dimm_num] != SDRAM_NONE) |
| 785 | && (dimm_populated[dimm_num-1] != dimm_populated[dimm_num])) { |
| 786 | printf("ERROR: DIMM's DDR1 and DDR2 type can not be mixed.\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 787 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 788 | } |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | /*------------------------------------------------------------------ |
| 793 | * For the memory DIMMs installed, this routine verifies that |
| 794 | * frequency previously calculated is supported. |
| 795 | *-----------------------------------------------------------------*/ |
| 796 | static void check_frequency(unsigned long *dimm_populated, |
| 797 | unsigned char *iic0_dimm_addr, |
| 798 | unsigned long num_dimm_banks) |
| 799 | { |
| 800 | unsigned long dimm_num; |
| 801 | unsigned long tcyc_reg; |
| 802 | unsigned long cycle_time; |
| 803 | unsigned long calc_cycle_time; |
| 804 | unsigned long sdram_freq; |
| 805 | unsigned long sdr_ddrpll; |
Stefan Roese | edd73f2 | 2007-10-21 08:12:41 +0200 | [diff] [blame] | 806 | PPC4xx_SYS_INFO board_cfg; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 807 | |
| 808 | /*------------------------------------------------------------------ |
| 809 | * Get the board configuration info. |
| 810 | *-----------------------------------------------------------------*/ |
| 811 | get_sys_info(&board_cfg); |
| 812 | |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 813 | mfsdr(SDR0_DDR0, sdr_ddrpll); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 814 | sdram_freq = ((board_cfg.freqPLB) * SDR0_DDR0_DDRM_DECODE(sdr_ddrpll)); |
| 815 | |
| 816 | /* |
| 817 | * calc_cycle_time is calculated from DDR frequency set by board/chip |
| 818 | * and is expressed in multiple of 10 picoseconds |
| 819 | * to match the way DIMM cycle time is calculated below. |
| 820 | */ |
| 821 | calc_cycle_time = MULDIV64(ONE_BILLION, 100, sdram_freq); |
| 822 | |
| 823 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 824 | if (dimm_populated[dimm_num] != SDRAM_NONE) { |
| 825 | tcyc_reg = spd_read(iic0_dimm_addr[dimm_num], 9); |
| 826 | /* |
| 827 | * Byte 9, Cycle time for CAS Latency=X, is split into two nibbles: |
| 828 | * the higher order nibble (bits 4-7) designates the cycle time |
| 829 | * to a granularity of 1ns; |
| 830 | * the value presented by the lower order nibble (bits 0-3) |
| 831 | * has a granularity of .1ns and is added to the value designated |
| 832 | * by the higher nibble. In addition, four lines of the lower order |
| 833 | * nibble are assigned to support +.25,+.33, +.66 and +.75. |
| 834 | */ |
| 835 | /* Convert from hex to decimal */ |
| 836 | if ((tcyc_reg & 0x0F) == 0x0D) |
| 837 | cycle_time = (((tcyc_reg & 0xF0) >> 4) * 100) + 75; |
| 838 | else if ((tcyc_reg & 0x0F) == 0x0C) |
| 839 | cycle_time = (((tcyc_reg & 0xF0) >> 4) * 100) + 66; |
| 840 | else if ((tcyc_reg & 0x0F) == 0x0B) |
| 841 | cycle_time = (((tcyc_reg & 0xF0) >> 4) * 100) + 33; |
| 842 | else if ((tcyc_reg & 0x0F) == 0x0A) |
| 843 | cycle_time = (((tcyc_reg & 0xF0) >> 4) * 100) + 25; |
| 844 | else |
| 845 | cycle_time = (((tcyc_reg & 0xF0) >> 4) * 100) + |
| 846 | ((tcyc_reg & 0x0F)*10); |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 847 | debug("cycle_time=%lu [10 picoseconds]\n", cycle_time); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 848 | |
| 849 | if (cycle_time > (calc_cycle_time + 10)) { |
| 850 | /* |
| 851 | * the provided sdram cycle_time is too small |
| 852 | * for the available DIMM cycle_time. |
| 853 | * The additionnal 100ps is here to accept a small incertainty. |
| 854 | */ |
| 855 | printf("ERROR: DRAM DIMM detected with cycle_time %d ps in " |
| 856 | "slot %d \n while calculated cycle time is %d ps.\n", |
| 857 | (unsigned int)(cycle_time*10), |
| 858 | (unsigned int)dimm_num, |
| 859 | (unsigned int)(calc_cycle_time*10)); |
| 860 | printf("Replace the DIMM, or change DDR frequency via " |
| 861 | "strapping bits.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 862 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 863 | } |
| 864 | } |
| 865 | } |
| 866 | } |
| 867 | |
| 868 | /*------------------------------------------------------------------ |
| 869 | * For the memory DIMMs installed, this routine verifies two |
| 870 | * ranks/banks maximum are availables. |
| 871 | *-----------------------------------------------------------------*/ |
| 872 | static void check_rank_number(unsigned long *dimm_populated, |
| 873 | unsigned char *iic0_dimm_addr, |
| 874 | unsigned long num_dimm_banks) |
| 875 | { |
| 876 | unsigned long dimm_num; |
| 877 | unsigned long dimm_rank; |
| 878 | unsigned long total_rank = 0; |
| 879 | |
| 880 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 881 | if (dimm_populated[dimm_num] != SDRAM_NONE) { |
| 882 | dimm_rank = spd_read(iic0_dimm_addr[dimm_num], 5); |
| 883 | if (((unsigned long)spd_read(iic0_dimm_addr[dimm_num], 2)) == 0x08) |
| 884 | dimm_rank = (dimm_rank & 0x0F) +1; |
| 885 | else |
| 886 | dimm_rank = dimm_rank & 0x0F; |
| 887 | |
| 888 | |
| 889 | if (dimm_rank > MAXRANKS) { |
Stefan Roese | 251161b | 2008-07-10 09:58:06 +0200 | [diff] [blame] | 890 | printf("ERROR: DRAM DIMM detected with %lu ranks in " |
| 891 | "slot %lu is not supported.\n", dimm_rank, dimm_num); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 892 | printf("Only %d ranks are supported for all DIMM.\n", MAXRANKS); |
| 893 | printf("Replace the DIMM module with a supported DIMM.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 894 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 895 | } else |
| 896 | total_rank += dimm_rank; |
| 897 | } |
| 898 | if (total_rank > MAXRANKS) { |
| 899 | printf("ERROR: DRAM DIMM detected with a total of %d ranks " |
| 900 | "for all slots.\n", (unsigned int)total_rank); |
| 901 | printf("Only %d ranks are supported for all DIMM.\n", MAXRANKS); |
| 902 | printf("Remove one of the DIMM modules.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 903 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 904 | } |
| 905 | } |
| 906 | } |
| 907 | |
| 908 | /*------------------------------------------------------------------ |
| 909 | * only support 2.5V modules. |
| 910 | * This routine verifies this. |
| 911 | *-----------------------------------------------------------------*/ |
| 912 | static void check_voltage_type(unsigned long *dimm_populated, |
| 913 | unsigned char *iic0_dimm_addr, |
| 914 | unsigned long num_dimm_banks) |
| 915 | { |
| 916 | unsigned long dimm_num; |
| 917 | unsigned long voltage_type; |
| 918 | |
| 919 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 920 | if (dimm_populated[dimm_num] != SDRAM_NONE) { |
| 921 | voltage_type = spd_read(iic0_dimm_addr[dimm_num], 8); |
| 922 | switch (voltage_type) { |
| 923 | case 0x00: |
| 924 | printf("ERROR: Only DIMMs DDR 2.5V or DDR2 1.8V are supported.\n"); |
| 925 | printf("This DIMM is 5.0 Volt/TTL.\n"); |
| 926 | printf("Replace the DIMM module in slot %d with a supported DIMM.\n\n", |
| 927 | (unsigned int)dimm_num); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 928 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 929 | break; |
| 930 | case 0x01: |
| 931 | printf("ERROR: Only DIMMs DDR 2.5V or DDR2 1.8V are supported.\n"); |
| 932 | printf("This DIMM is LVTTL.\n"); |
| 933 | printf("Replace the DIMM module in slot %d with a supported DIMM.\n\n", |
| 934 | (unsigned int)dimm_num); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 935 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 936 | break; |
| 937 | case 0x02: |
| 938 | printf("ERROR: Only DIMMs DDR 2.5V or DDR2 1.8V are supported.\n"); |
| 939 | printf("This DIMM is 1.5 Volt.\n"); |
| 940 | printf("Replace the DIMM module in slot %d with a supported DIMM.\n\n", |
| 941 | (unsigned int)dimm_num); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 942 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 943 | break; |
| 944 | case 0x03: |
| 945 | printf("ERROR: Only DIMMs DDR 2.5V or DDR2 1.8V are supported.\n"); |
| 946 | printf("This DIMM is 3.3 Volt/TTL.\n"); |
| 947 | printf("Replace the DIMM module in slot %d with a supported DIMM.\n\n", |
| 948 | (unsigned int)dimm_num); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 949 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 950 | break; |
| 951 | case 0x04: |
| 952 | /* 2.5 Voltage only for DDR1 */ |
| 953 | break; |
| 954 | case 0x05: |
| 955 | /* 1.8 Voltage only for DDR2 */ |
| 956 | break; |
| 957 | default: |
| 958 | printf("ERROR: Only DIMMs DDR 2.5V or DDR2 1.8V are supported.\n"); |
| 959 | printf("Replace the DIMM module in slot %d with a supported DIMM.\n\n", |
| 960 | (unsigned int)dimm_num); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 961 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 962 | break; |
| 963 | } |
| 964 | } |
| 965 | } |
| 966 | } |
| 967 | |
| 968 | /*-----------------------------------------------------------------------------+ |
| 969 | * program_copt1. |
| 970 | *-----------------------------------------------------------------------------*/ |
| 971 | static void program_copt1(unsigned long *dimm_populated, |
| 972 | unsigned char *iic0_dimm_addr, |
| 973 | unsigned long num_dimm_banks) |
| 974 | { |
| 975 | unsigned long dimm_num; |
| 976 | unsigned long mcopt1; |
| 977 | unsigned long ecc_enabled; |
| 978 | unsigned long ecc = 0; |
| 979 | unsigned long data_width = 0; |
| 980 | unsigned long dimm_32bit; |
| 981 | unsigned long dimm_64bit; |
| 982 | unsigned long registered = 0; |
| 983 | unsigned long attribute = 0; |
| 984 | unsigned long buf0, buf1; /* TODO: code to be changed for IOP1.6 to support 4 DIMMs */ |
| 985 | unsigned long bankcount; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 986 | unsigned long val; |
| 987 | |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 988 | #ifdef CONFIG_DDR_ECC |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 989 | ecc_enabled = true; |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 990 | #else |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 991 | ecc_enabled = false; |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 992 | #endif |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 993 | dimm_32bit = false; |
| 994 | dimm_64bit = false; |
| 995 | buf0 = false; |
| 996 | buf1 = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 997 | |
| 998 | /*------------------------------------------------------------------ |
| 999 | * Set memory controller options reg 1, SDRAM_MCOPT1. |
| 1000 | *-----------------------------------------------------------------*/ |
| 1001 | mfsdram(SDRAM_MCOPT1, val); |
| 1002 | mcopt1 = val & ~(SDRAM_MCOPT1_MCHK_MASK | SDRAM_MCOPT1_RDEN_MASK | |
| 1003 | SDRAM_MCOPT1_PMU_MASK | SDRAM_MCOPT1_DMWD_MASK | |
| 1004 | SDRAM_MCOPT1_UIOS_MASK | SDRAM_MCOPT1_BCNT_MASK | |
| 1005 | SDRAM_MCOPT1_DDR_TYPE_MASK | SDRAM_MCOPT1_RWOO_MASK | |
| 1006 | SDRAM_MCOPT1_WOOO_MASK | SDRAM_MCOPT1_DCOO_MASK | |
| 1007 | SDRAM_MCOPT1_DREF_MASK); |
| 1008 | |
| 1009 | mcopt1 |= SDRAM_MCOPT1_QDEP; |
| 1010 | mcopt1 |= SDRAM_MCOPT1_PMU_OPEN; |
| 1011 | mcopt1 |= SDRAM_MCOPT1_RWOO_DISABLED; |
| 1012 | mcopt1 |= SDRAM_MCOPT1_WOOO_DISABLED; |
| 1013 | mcopt1 |= SDRAM_MCOPT1_DCOO_DISABLED; |
| 1014 | mcopt1 |= SDRAM_MCOPT1_DREF_NORMAL; |
| 1015 | |
| 1016 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 1017 | if (dimm_populated[dimm_num] != SDRAM_NONE) { |
| 1018 | /* test ecc support */ |
| 1019 | ecc = (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 11); |
| 1020 | if (ecc != 0x02) /* ecc not supported */ |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1021 | ecc_enabled = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1022 | |
| 1023 | /* test bank count */ |
| 1024 | bankcount = (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 17); |
| 1025 | if (bankcount == 0x04) /* bank count = 4 */ |
| 1026 | mcopt1 |= SDRAM_MCOPT1_4_BANKS; |
| 1027 | else /* bank count = 8 */ |
| 1028 | mcopt1 |= SDRAM_MCOPT1_8_BANKS; |
| 1029 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1030 | /* test for buffered/unbuffered, registered, differential clocks */ |
| 1031 | registered = (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 20); |
| 1032 | attribute = (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 21); |
| 1033 | |
| 1034 | /* TODO: code to be changed for IOP1.6 to support 4 DIMMs */ |
| 1035 | if (dimm_num == 0) { |
| 1036 | if (dimm_populated[dimm_num] == SDRAM_DDR1) /* DDR1 type */ |
| 1037 | mcopt1 |= SDRAM_MCOPT1_DDR1_TYPE; |
| 1038 | if (dimm_populated[dimm_num] == SDRAM_DDR2) /* DDR2 type */ |
| 1039 | mcopt1 |= SDRAM_MCOPT1_DDR2_TYPE; |
| 1040 | if (registered == 1) { /* DDR2 always buffered */ |
| 1041 | /* TODO: what about above comments ? */ |
| 1042 | mcopt1 |= SDRAM_MCOPT1_RDEN; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1043 | buf0 = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1044 | } else { |
| 1045 | /* TODO: the mask 0x02 doesn't match Samsung def for byte 21. */ |
| 1046 | if ((attribute & 0x02) == 0x00) { |
| 1047 | /* buffered not supported */ |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1048 | buf0 = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1049 | } else { |
| 1050 | mcopt1 |= SDRAM_MCOPT1_RDEN; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1051 | buf0 = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1052 | } |
| 1053 | } |
| 1054 | } |
| 1055 | else if (dimm_num == 1) { |
| 1056 | if (dimm_populated[dimm_num] == SDRAM_DDR1) /* DDR1 type */ |
| 1057 | mcopt1 |= SDRAM_MCOPT1_DDR1_TYPE; |
| 1058 | if (dimm_populated[dimm_num] == SDRAM_DDR2) /* DDR2 type */ |
| 1059 | mcopt1 |= SDRAM_MCOPT1_DDR2_TYPE; |
| 1060 | if (registered == 1) { |
| 1061 | /* DDR2 always buffered */ |
| 1062 | mcopt1 |= SDRAM_MCOPT1_RDEN; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1063 | buf1 = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1064 | } else { |
| 1065 | if ((attribute & 0x02) == 0x00) { |
| 1066 | /* buffered not supported */ |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1067 | buf1 = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1068 | } else { |
| 1069 | mcopt1 |= SDRAM_MCOPT1_RDEN; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1070 | buf1 = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1071 | } |
| 1072 | } |
| 1073 | } |
| 1074 | |
| 1075 | /* Note that for DDR2 the byte 7 is reserved, but OK to keep code as is. */ |
| 1076 | data_width = (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 6) + |
| 1077 | (((unsigned long)spd_read(iic0_dimm_addr[dimm_num], 7)) << 8); |
| 1078 | |
| 1079 | switch (data_width) { |
| 1080 | case 72: |
| 1081 | case 64: |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1082 | dimm_64bit = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1083 | break; |
| 1084 | case 40: |
| 1085 | case 32: |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1086 | dimm_32bit = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1087 | break; |
| 1088 | default: |
Stefan Roese | 251161b | 2008-07-10 09:58:06 +0200 | [diff] [blame] | 1089 | printf("WARNING: Detected a DIMM with a data width of %lu bits.\n", |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1090 | data_width); |
| 1091 | printf("Only DIMMs with 32 or 64 bit DDR-SDRAM widths are supported.\n"); |
| 1092 | break; |
| 1093 | } |
| 1094 | } |
| 1095 | } |
| 1096 | |
| 1097 | /* verify matching properties */ |
| 1098 | if ((dimm_populated[0] != SDRAM_NONE) && (dimm_populated[1] != SDRAM_NONE)) { |
| 1099 | if (buf0 != buf1) { |
| 1100 | printf("ERROR: DIMM's buffered/unbuffered, registered, clocking don't match.\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 1101 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1102 | } |
| 1103 | } |
| 1104 | |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1105 | if ((dimm_64bit == true) && (dimm_32bit == true)) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1106 | printf("ERROR: Cannot mix 32 bit and 64 bit DDR-SDRAM DIMMs together.\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 1107 | spd_ddr_init_hang (); |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1108 | } else if ((dimm_64bit == true) && (dimm_32bit == false)) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1109 | mcopt1 |= SDRAM_MCOPT1_DMWD_64; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1110 | } else if ((dimm_64bit == false) && (dimm_32bit == true)) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1111 | mcopt1 |= SDRAM_MCOPT1_DMWD_32; |
| 1112 | } else { |
| 1113 | printf("ERROR: Please install only 32 or 64 bit DDR-SDRAM DIMMs.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 1114 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1115 | } |
| 1116 | |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1117 | if (ecc_enabled == true) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1118 | mcopt1 |= SDRAM_MCOPT1_MCHK_GEN; |
| 1119 | else |
| 1120 | mcopt1 |= SDRAM_MCOPT1_MCHK_NON; |
| 1121 | |
| 1122 | mtsdram(SDRAM_MCOPT1, mcopt1); |
| 1123 | } |
| 1124 | |
| 1125 | /*-----------------------------------------------------------------------------+ |
| 1126 | * program_codt. |
| 1127 | *-----------------------------------------------------------------------------*/ |
| 1128 | static void program_codt(unsigned long *dimm_populated, |
| 1129 | unsigned char *iic0_dimm_addr, |
| 1130 | unsigned long num_dimm_banks) |
| 1131 | { |
| 1132 | unsigned long codt; |
| 1133 | unsigned long modt0 = 0; |
| 1134 | unsigned long modt1 = 0; |
| 1135 | unsigned long modt2 = 0; |
| 1136 | unsigned long modt3 = 0; |
| 1137 | unsigned char dimm_num; |
| 1138 | unsigned char dimm_rank; |
| 1139 | unsigned char total_rank = 0; |
| 1140 | unsigned char total_dimm = 0; |
| 1141 | unsigned char dimm_type = 0; |
| 1142 | unsigned char firstSlot = 0; |
| 1143 | |
| 1144 | /*------------------------------------------------------------------ |
| 1145 | * Set the SDRAM Controller On Die Termination Register |
| 1146 | *-----------------------------------------------------------------*/ |
| 1147 | mfsdram(SDRAM_CODT, codt); |
Carolyn Smith | 5b64842 | 2009-02-12 06:13:44 +0100 | [diff] [blame] | 1148 | codt &= ~(SDRAM_CODT_DQS_SINGLE_END | SDRAM_CODT_CKSE_SINGLE_END); |
| 1149 | codt |= SDRAM_CODT_IO_NMODE; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1150 | |
| 1151 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 1152 | if (dimm_populated[dimm_num] != SDRAM_NONE) { |
| 1153 | dimm_rank = (unsigned long)spd_read(iic0_dimm_addr[dimm_num], 5); |
| 1154 | if (((unsigned long)spd_read(iic0_dimm_addr[dimm_num], 2)) == 0x08) { |
| 1155 | dimm_rank = (dimm_rank & 0x0F) + 1; |
| 1156 | dimm_type = SDRAM_DDR2; |
| 1157 | } else { |
| 1158 | dimm_rank = dimm_rank & 0x0F; |
| 1159 | dimm_type = SDRAM_DDR1; |
| 1160 | } |
| 1161 | |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1162 | total_rank += dimm_rank; |
| 1163 | total_dimm++; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1164 | if ((dimm_num == 0) && (total_dimm == 1)) |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1165 | firstSlot = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1166 | else |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1167 | firstSlot = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1168 | } |
| 1169 | } |
| 1170 | if (dimm_type == SDRAM_DDR2) { |
| 1171 | codt |= SDRAM_CODT_DQS_1_8_V_DDR2; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1172 | if ((total_dimm == 1) && (firstSlot == true)) { |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 1173 | if (total_rank == 1) { /* PUUU */ |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1174 | codt |= CALC_ODT_R(0); |
| 1175 | modt0 = CALC_ODT_W(0); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1176 | modt1 = 0x00000000; |
| 1177 | modt2 = 0x00000000; |
| 1178 | modt3 = 0x00000000; |
| 1179 | } |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 1180 | if (total_rank == 2) { /* PPUU */ |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1181 | codt |= CALC_ODT_R(0) | CALC_ODT_R(1); |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 1182 | modt0 = CALC_ODT_W(0) | CALC_ODT_W(1); |
| 1183 | modt1 = 0x00000000; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1184 | modt2 = 0x00000000; |
| 1185 | modt3 = 0x00000000; |
| 1186 | } |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1187 | } else if ((total_dimm == 1) && (firstSlot != true)) { |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 1188 | if (total_rank == 1) { /* UUPU */ |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1189 | codt |= CALC_ODT_R(2); |
| 1190 | modt0 = 0x00000000; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1191 | modt1 = 0x00000000; |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1192 | modt2 = CALC_ODT_W(2); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1193 | modt3 = 0x00000000; |
| 1194 | } |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 1195 | if (total_rank == 2) { /* UUPP */ |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1196 | codt |= CALC_ODT_R(2) | CALC_ODT_R(3); |
| 1197 | modt0 = 0x00000000; |
| 1198 | modt1 = 0x00000000; |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 1199 | modt2 = CALC_ODT_W(2) | CALC_ODT_W(3); |
| 1200 | modt3 = 0x00000000; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1201 | } |
| 1202 | } |
| 1203 | if (total_dimm == 2) { |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 1204 | if (total_rank == 2) { /* PUPU */ |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1205 | codt |= CALC_ODT_R(0) | CALC_ODT_R(2); |
| 1206 | modt0 = CALC_ODT_RW(2); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1207 | modt1 = 0x00000000; |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1208 | modt2 = CALC_ODT_RW(0); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1209 | modt3 = 0x00000000; |
| 1210 | } |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 1211 | if (total_rank == 4) { /* PPPP */ |
Stefan Roese | 32a1cad | 2007-06-01 13:45:00 +0200 | [diff] [blame] | 1212 | codt |= CALC_ODT_R(0) | CALC_ODT_R(1) | |
| 1213 | CALC_ODT_R(2) | CALC_ODT_R(3); |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 1214 | modt0 = CALC_ODT_RW(2) | CALC_ODT_RW(3); |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1215 | modt1 = 0x00000000; |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 1216 | modt2 = CALC_ODT_RW(0) | CALC_ODT_RW(1); |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1217 | modt3 = 0x00000000; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1218 | } |
| 1219 | } |
Wolfgang Denk | f972e77 | 2007-03-04 01:36:05 +0100 | [diff] [blame] | 1220 | } else { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1221 | codt |= SDRAM_CODT_DQS_2_5_V_DDR1; |
| 1222 | modt0 = 0x00000000; |
| 1223 | modt1 = 0x00000000; |
| 1224 | modt2 = 0x00000000; |
| 1225 | modt3 = 0x00000000; |
| 1226 | |
| 1227 | if (total_dimm == 1) { |
| 1228 | if (total_rank == 1) |
| 1229 | codt |= 0x00800000; |
| 1230 | if (total_rank == 2) |
| 1231 | codt |= 0x02800000; |
| 1232 | } |
| 1233 | if (total_dimm == 2) { |
| 1234 | if (total_rank == 2) |
| 1235 | codt |= 0x08800000; |
| 1236 | if (total_rank == 4) |
| 1237 | codt |= 0x2a800000; |
| 1238 | } |
| 1239 | } |
| 1240 | |
| 1241 | debug("nb of dimm %d\n", total_dimm); |
| 1242 | debug("nb of rank %d\n", total_rank); |
| 1243 | if (total_dimm == 1) |
| 1244 | debug("dimm in slot %d\n", firstSlot); |
| 1245 | |
| 1246 | mtsdram(SDRAM_CODT, codt); |
| 1247 | mtsdram(SDRAM_MODT0, modt0); |
| 1248 | mtsdram(SDRAM_MODT1, modt1); |
| 1249 | mtsdram(SDRAM_MODT2, modt2); |
| 1250 | mtsdram(SDRAM_MODT3, modt3); |
| 1251 | } |
| 1252 | |
| 1253 | /*-----------------------------------------------------------------------------+ |
| 1254 | * program_initplr. |
| 1255 | *-----------------------------------------------------------------------------*/ |
| 1256 | static void program_initplr(unsigned long *dimm_populated, |
| 1257 | unsigned char *iic0_dimm_addr, |
| 1258 | unsigned long num_dimm_banks, |
Wolfgang Denk | b38e0df | 2007-03-06 18:08:43 +0100 | [diff] [blame] | 1259 | ddr_cas_id_t selected_cas, |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1260 | int write_recovery) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1261 | { |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1262 | u32 cas = 0; |
| 1263 | u32 odt = 0; |
| 1264 | u32 ods = 0; |
| 1265 | u32 mr; |
| 1266 | u32 wr; |
| 1267 | u32 emr; |
| 1268 | u32 emr2; |
| 1269 | u32 emr3; |
| 1270 | int dimm_num; |
| 1271 | int total_dimm = 0; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1272 | |
| 1273 | /****************************************************** |
| 1274 | ** Assumption: if more than one DIMM, all DIMMs are the same |
Wolfgang Denk | 52232fd | 2007-02-27 14:26:04 +0100 | [diff] [blame] | 1275 | ** as already checked in check_memory_type |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1276 | ******************************************************/ |
| 1277 | |
| 1278 | if ((dimm_populated[0] == SDRAM_DDR1) || (dimm_populated[1] == SDRAM_DDR1)) { |
| 1279 | mtsdram(SDRAM_INITPLR0, 0x81B80000); |
| 1280 | mtsdram(SDRAM_INITPLR1, 0x81900400); |
| 1281 | mtsdram(SDRAM_INITPLR2, 0x81810000); |
| 1282 | mtsdram(SDRAM_INITPLR3, 0xff800162); |
| 1283 | mtsdram(SDRAM_INITPLR4, 0x81900400); |
| 1284 | mtsdram(SDRAM_INITPLR5, 0x86080000); |
| 1285 | mtsdram(SDRAM_INITPLR6, 0x86080000); |
| 1286 | mtsdram(SDRAM_INITPLR7, 0x81000062); |
| 1287 | } else if ((dimm_populated[0] == SDRAM_DDR2) || (dimm_populated[1] == SDRAM_DDR2)) { |
| 1288 | switch (selected_cas) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1289 | case DDR_CAS_3: |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1290 | cas = 3 << 4; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1291 | break; |
| 1292 | case DDR_CAS_4: |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1293 | cas = 4 << 4; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1294 | break; |
| 1295 | case DDR_CAS_5: |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1296 | cas = 5 << 4; |
| 1297 | break; |
| 1298 | default: |
| 1299 | printf("ERROR: ucode error on selected_cas value %d", selected_cas); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 1300 | spd_ddr_init_hang (); |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1301 | break; |
| 1302 | } |
| 1303 | |
| 1304 | #if 0 |
| 1305 | /* |
| 1306 | * ToDo - Still a problem with the write recovery: |
| 1307 | * On the Corsair CM2X512-5400C4 module, setting write recovery |
| 1308 | * in the INITPLR reg to the value calculated in program_mode() |
| 1309 | * results in not correctly working DDR2 memory (crash after |
| 1310 | * relocation). |
| 1311 | * |
| 1312 | * So for now, set the write recovery to 3. This seems to work |
| 1313 | * on the Corair module too. |
| 1314 | * |
| 1315 | * 2007-03-01, sr |
| 1316 | */ |
| 1317 | switch (write_recovery) { |
| 1318 | case 3: |
| 1319 | wr = WRITE_RECOV_3; |
| 1320 | break; |
| 1321 | case 4: |
| 1322 | wr = WRITE_RECOV_4; |
| 1323 | break; |
| 1324 | case 5: |
| 1325 | wr = WRITE_RECOV_5; |
| 1326 | break; |
| 1327 | case 6: |
| 1328 | wr = WRITE_RECOV_6; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1329 | break; |
| 1330 | default: |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1331 | printf("ERROR: write recovery not support (%d)", write_recovery); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 1332 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1333 | break; |
| 1334 | } |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1335 | #else |
| 1336 | wr = WRITE_RECOV_3; /* test-only, see description above */ |
| 1337 | #endif |
| 1338 | |
| 1339 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) |
| 1340 | if (dimm_populated[dimm_num] != SDRAM_NONE) |
| 1341 | total_dimm++; |
| 1342 | if (total_dimm == 1) { |
| 1343 | odt = ODT_150_OHM; |
| 1344 | ods = ODS_FULL; |
| 1345 | } else if (total_dimm == 2) { |
| 1346 | odt = ODT_75_OHM; |
| 1347 | ods = ODS_REDUCED; |
| 1348 | } else { |
| 1349 | printf("ERROR: Unsupported number of DIMM's (%d)", total_dimm); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 1350 | spd_ddr_init_hang (); |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1351 | } |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1352 | |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1353 | mr = CMD_EMR | SELECT_MR | BURST_LEN_4 | wr | cas; |
| 1354 | emr = CMD_EMR | SELECT_EMR | odt | ods; |
| 1355 | emr2 = CMD_EMR | SELECT_EMR2; |
| 1356 | emr3 = CMD_EMR | SELECT_EMR3; |
Prodyut Hazarika | 52b6bec | 2008-08-27 16:39:00 -0700 | [diff] [blame] | 1357 | /* NOP - Wait 106 MemClk cycles */ |
| 1358 | mtsdram(SDRAM_INITPLR0, SDRAM_INITPLR_ENABLE | CMD_NOP | |
| 1359 | SDRAM_INITPLR_IMWT_ENCODE(106)); |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1360 | udelay(1000); |
Prodyut Hazarika | 52b6bec | 2008-08-27 16:39:00 -0700 | [diff] [blame] | 1361 | /* precharge 4 MemClk cycles */ |
| 1362 | mtsdram(SDRAM_INITPLR1, SDRAM_INITPLR_ENABLE | CMD_PRECHARGE | |
| 1363 | SDRAM_INITPLR_IMWT_ENCODE(4)); |
| 1364 | /* EMR2 - Wait tMRD (2 MemClk cycles) */ |
| 1365 | mtsdram(SDRAM_INITPLR2, SDRAM_INITPLR_ENABLE | emr2 | |
| 1366 | SDRAM_INITPLR_IMWT_ENCODE(2)); |
| 1367 | /* EMR3 - Wait tMRD (2 MemClk cycles) */ |
| 1368 | mtsdram(SDRAM_INITPLR3, SDRAM_INITPLR_ENABLE | emr3 | |
| 1369 | SDRAM_INITPLR_IMWT_ENCODE(2)); |
| 1370 | /* EMR DLL ENABLE - Wait tMRD (2 MemClk cycles) */ |
| 1371 | mtsdram(SDRAM_INITPLR4, SDRAM_INITPLR_ENABLE | emr | |
| 1372 | SDRAM_INITPLR_IMWT_ENCODE(2)); |
| 1373 | /* MR w/ DLL reset - 200 cycle wait for DLL reset */ |
| 1374 | mtsdram(SDRAM_INITPLR5, SDRAM_INITPLR_ENABLE | mr | DLL_RESET | |
| 1375 | SDRAM_INITPLR_IMWT_ENCODE(200)); |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1376 | udelay(1000); |
Prodyut Hazarika | 52b6bec | 2008-08-27 16:39:00 -0700 | [diff] [blame] | 1377 | /* precharge 4 MemClk cycles */ |
| 1378 | mtsdram(SDRAM_INITPLR6, SDRAM_INITPLR_ENABLE | CMD_PRECHARGE | |
| 1379 | SDRAM_INITPLR_IMWT_ENCODE(4)); |
| 1380 | /* Refresh 25 MemClk cycles */ |
| 1381 | mtsdram(SDRAM_INITPLR7, SDRAM_INITPLR_ENABLE | CMD_REFRESH | |
| 1382 | SDRAM_INITPLR_IMWT_ENCODE(25)); |
| 1383 | /* Refresh 25 MemClk cycles */ |
| 1384 | mtsdram(SDRAM_INITPLR8, SDRAM_INITPLR_ENABLE | CMD_REFRESH | |
| 1385 | SDRAM_INITPLR_IMWT_ENCODE(25)); |
| 1386 | /* Refresh 25 MemClk cycles */ |
| 1387 | mtsdram(SDRAM_INITPLR9, SDRAM_INITPLR_ENABLE | CMD_REFRESH | |
| 1388 | SDRAM_INITPLR_IMWT_ENCODE(25)); |
| 1389 | /* Refresh 25 MemClk cycles */ |
| 1390 | mtsdram(SDRAM_INITPLR10, SDRAM_INITPLR_ENABLE | CMD_REFRESH | |
| 1391 | SDRAM_INITPLR_IMWT_ENCODE(25)); |
| 1392 | /* MR w/o DLL reset - Wait tMRD (2 MemClk cycles) */ |
| 1393 | mtsdram(SDRAM_INITPLR11, SDRAM_INITPLR_ENABLE | mr | |
| 1394 | SDRAM_INITPLR_IMWT_ENCODE(2)); |
| 1395 | /* EMR OCD Default - Wait tMRD (2 MemClk cycles) */ |
| 1396 | mtsdram(SDRAM_INITPLR12, SDRAM_INITPLR_ENABLE | OCD_CALIB_DEF | |
| 1397 | SDRAM_INITPLR_IMWT_ENCODE(2) | emr); |
| 1398 | /* EMR OCD Exit */ |
| 1399 | mtsdram(SDRAM_INITPLR13, SDRAM_INITPLR_ENABLE | emr | |
| 1400 | SDRAM_INITPLR_IMWT_ENCODE(2)); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1401 | } else { |
| 1402 | printf("ERROR: ucode error as unknown DDR type in program_initplr"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 1403 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1404 | } |
| 1405 | } |
| 1406 | |
| 1407 | /*------------------------------------------------------------------ |
| 1408 | * This routine programs the SDRAM_MMODE register. |
| 1409 | * the selected_cas is an output parameter, that will be passed |
| 1410 | * by caller to call the above program_initplr( ) |
| 1411 | *-----------------------------------------------------------------*/ |
| 1412 | static void program_mode(unsigned long *dimm_populated, |
| 1413 | unsigned char *iic0_dimm_addr, |
| 1414 | unsigned long num_dimm_banks, |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1415 | ddr_cas_id_t *selected_cas, |
| 1416 | int *write_recovery) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1417 | { |
| 1418 | unsigned long dimm_num; |
| 1419 | unsigned long sdram_ddr1; |
| 1420 | unsigned long t_wr_ns; |
| 1421 | unsigned long t_wr_clk; |
| 1422 | unsigned long cas_bit; |
| 1423 | unsigned long cas_index; |
| 1424 | unsigned long sdram_freq; |
| 1425 | unsigned long ddr_check; |
| 1426 | unsigned long mmode; |
| 1427 | unsigned long tcyc_reg; |
| 1428 | unsigned long cycle_2_0_clk; |
| 1429 | unsigned long cycle_2_5_clk; |
| 1430 | unsigned long cycle_3_0_clk; |
| 1431 | unsigned long cycle_4_0_clk; |
| 1432 | unsigned long cycle_5_0_clk; |
| 1433 | unsigned long max_2_0_tcyc_ns_x_100; |
| 1434 | unsigned long max_2_5_tcyc_ns_x_100; |
| 1435 | unsigned long max_3_0_tcyc_ns_x_100; |
| 1436 | unsigned long max_4_0_tcyc_ns_x_100; |
| 1437 | unsigned long max_5_0_tcyc_ns_x_100; |
| 1438 | unsigned long cycle_time_ns_x_100[3]; |
Stefan Roese | edd73f2 | 2007-10-21 08:12:41 +0200 | [diff] [blame] | 1439 | PPC4xx_SYS_INFO board_cfg; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1440 | unsigned char cas_2_0_available; |
| 1441 | unsigned char cas_2_5_available; |
| 1442 | unsigned char cas_3_0_available; |
| 1443 | unsigned char cas_4_0_available; |
| 1444 | unsigned char cas_5_0_available; |
| 1445 | unsigned long sdr_ddrpll; |
| 1446 | |
| 1447 | /*------------------------------------------------------------------ |
| 1448 | * Get the board configuration info. |
| 1449 | *-----------------------------------------------------------------*/ |
| 1450 | get_sys_info(&board_cfg); |
| 1451 | |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 1452 | mfsdr(SDR0_DDR0, sdr_ddrpll); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1453 | sdram_freq = MULDIV64((board_cfg.freqPLB), SDR0_DDR0_DDRM_DECODE(sdr_ddrpll), 1); |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 1454 | debug("sdram_freq=%lu\n", sdram_freq); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1455 | |
| 1456 | /*------------------------------------------------------------------ |
| 1457 | * Handle the timing. We need to find the worst case timing of all |
| 1458 | * the dimm modules installed. |
| 1459 | *-----------------------------------------------------------------*/ |
| 1460 | t_wr_ns = 0; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1461 | cas_2_0_available = true; |
| 1462 | cas_2_5_available = true; |
| 1463 | cas_3_0_available = true; |
| 1464 | cas_4_0_available = true; |
| 1465 | cas_5_0_available = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1466 | max_2_0_tcyc_ns_x_100 = 10; |
| 1467 | max_2_5_tcyc_ns_x_100 = 10; |
| 1468 | max_3_0_tcyc_ns_x_100 = 10; |
| 1469 | max_4_0_tcyc_ns_x_100 = 10; |
| 1470 | max_5_0_tcyc_ns_x_100 = 10; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1471 | sdram_ddr1 = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1472 | |
| 1473 | /* loop through all the DIMM slots on the board */ |
| 1474 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 1475 | /* If a dimm is installed in a particular slot ... */ |
| 1476 | if (dimm_populated[dimm_num] != SDRAM_NONE) { |
| 1477 | if (dimm_populated[dimm_num] == SDRAM_DDR1) |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1478 | sdram_ddr1 = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1479 | else |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1480 | sdram_ddr1 = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1481 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1482 | cas_bit = spd_read(iic0_dimm_addr[dimm_num], 18); |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 1483 | debug("cas_bit[SPD byte 18]=%02lx\n", cas_bit); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1484 | |
| 1485 | /* For a particular DIMM, grab the three CAS values it supports */ |
| 1486 | for (cas_index = 0; cas_index < 3; cas_index++) { |
| 1487 | switch (cas_index) { |
| 1488 | case 0: |
| 1489 | tcyc_reg = spd_read(iic0_dimm_addr[dimm_num], 9); |
| 1490 | break; |
| 1491 | case 1: |
| 1492 | tcyc_reg = spd_read(iic0_dimm_addr[dimm_num], 23); |
| 1493 | break; |
| 1494 | default: |
| 1495 | tcyc_reg = spd_read(iic0_dimm_addr[dimm_num], 25); |
| 1496 | break; |
| 1497 | } |
| 1498 | |
| 1499 | if ((tcyc_reg & 0x0F) >= 10) { |
| 1500 | if ((tcyc_reg & 0x0F) == 0x0D) { |
| 1501 | /* Convert from hex to decimal */ |
Stefan Roese | 5d48a84 | 2007-03-31 13:15:06 +0200 | [diff] [blame] | 1502 | cycle_time_ns_x_100[cas_index] = |
| 1503 | (((tcyc_reg & 0xF0) >> 4) * 100) + 75; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1504 | } else { |
| 1505 | printf("ERROR: SPD reported Tcyc is incorrect for DIMM " |
| 1506 | "in slot %d\n", (unsigned int)dimm_num); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 1507 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1508 | } |
| 1509 | } else { |
| 1510 | /* Convert from hex to decimal */ |
Stefan Roese | 5d48a84 | 2007-03-31 13:15:06 +0200 | [diff] [blame] | 1511 | cycle_time_ns_x_100[cas_index] = |
| 1512 | (((tcyc_reg & 0xF0) >> 4) * 100) + |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1513 | ((tcyc_reg & 0x0F)*10); |
| 1514 | } |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 1515 | debug("cas_index=%lu: cycle_time_ns_x_100=%lu\n", cas_index, |
Stefan Roese | 5d48a84 | 2007-03-31 13:15:06 +0200 | [diff] [blame] | 1516 | cycle_time_ns_x_100[cas_index]); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1517 | } |
| 1518 | |
| 1519 | /* The rest of this routine determines if CAS 2.0, 2.5, 3.0, 4.0 and 5.0 are */ |
| 1520 | /* supported for a particular DIMM. */ |
| 1521 | cas_index = 0; |
| 1522 | |
| 1523 | if (sdram_ddr1) { |
| 1524 | /* |
| 1525 | * DDR devices use the following bitmask for CAS latency: |
| 1526 | * Bit 7 6 5 4 3 2 1 0 |
| 1527 | * TBD 4.0 3.5 3.0 2.5 2.0 1.5 1.0 |
| 1528 | */ |
Stefan Roese | 5d48a84 | 2007-03-31 13:15:06 +0200 | [diff] [blame] | 1529 | if (((cas_bit & 0x40) == 0x40) && (cas_index < 3) && |
| 1530 | (cycle_time_ns_x_100[cas_index] != 0)) { |
| 1531 | max_4_0_tcyc_ns_x_100 = max(max_4_0_tcyc_ns_x_100, |
| 1532 | cycle_time_ns_x_100[cas_index]); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1533 | cas_index++; |
| 1534 | } else { |
| 1535 | if (cas_index != 0) |
| 1536 | cas_index++; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1537 | cas_4_0_available = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1538 | } |
| 1539 | |
Stefan Roese | 5d48a84 | 2007-03-31 13:15:06 +0200 | [diff] [blame] | 1540 | if (((cas_bit & 0x10) == 0x10) && (cas_index < 3) && |
| 1541 | (cycle_time_ns_x_100[cas_index] != 0)) { |
| 1542 | max_3_0_tcyc_ns_x_100 = max(max_3_0_tcyc_ns_x_100, |
| 1543 | cycle_time_ns_x_100[cas_index]); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1544 | cas_index++; |
| 1545 | } else { |
| 1546 | if (cas_index != 0) |
| 1547 | cas_index++; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1548 | cas_3_0_available = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1549 | } |
| 1550 | |
Stefan Roese | 5d48a84 | 2007-03-31 13:15:06 +0200 | [diff] [blame] | 1551 | if (((cas_bit & 0x08) == 0x08) && (cas_index < 3) && |
| 1552 | (cycle_time_ns_x_100[cas_index] != 0)) { |
| 1553 | max_2_5_tcyc_ns_x_100 = max(max_2_5_tcyc_ns_x_100, |
| 1554 | cycle_time_ns_x_100[cas_index]); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1555 | cas_index++; |
| 1556 | } else { |
| 1557 | if (cas_index != 0) |
| 1558 | cas_index++; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1559 | cas_2_5_available = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1560 | } |
| 1561 | |
Stefan Roese | 5d48a84 | 2007-03-31 13:15:06 +0200 | [diff] [blame] | 1562 | if (((cas_bit & 0x04) == 0x04) && (cas_index < 3) && |
| 1563 | (cycle_time_ns_x_100[cas_index] != 0)) { |
| 1564 | max_2_0_tcyc_ns_x_100 = max(max_2_0_tcyc_ns_x_100, |
| 1565 | cycle_time_ns_x_100[cas_index]); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1566 | cas_index++; |
| 1567 | } else { |
| 1568 | if (cas_index != 0) |
| 1569 | cas_index++; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1570 | cas_2_0_available = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1571 | } |
| 1572 | } else { |
| 1573 | /* |
| 1574 | * DDR2 devices use the following bitmask for CAS latency: |
| 1575 | * Bit 7 6 5 4 3 2 1 0 |
| 1576 | * TBD 6.0 5.0 4.0 3.0 2.0 TBD TBD |
| 1577 | */ |
Stefan Roese | 5d48a84 | 2007-03-31 13:15:06 +0200 | [diff] [blame] | 1578 | if (((cas_bit & 0x20) == 0x20) && (cas_index < 3) && |
| 1579 | (cycle_time_ns_x_100[cas_index] != 0)) { |
| 1580 | max_5_0_tcyc_ns_x_100 = max(max_5_0_tcyc_ns_x_100, |
| 1581 | cycle_time_ns_x_100[cas_index]); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1582 | cas_index++; |
| 1583 | } else { |
| 1584 | if (cas_index != 0) |
| 1585 | cas_index++; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1586 | cas_5_0_available = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1587 | } |
| 1588 | |
Stefan Roese | 5d48a84 | 2007-03-31 13:15:06 +0200 | [diff] [blame] | 1589 | if (((cas_bit & 0x10) == 0x10) && (cas_index < 3) && |
| 1590 | (cycle_time_ns_x_100[cas_index] != 0)) { |
| 1591 | max_4_0_tcyc_ns_x_100 = max(max_4_0_tcyc_ns_x_100, |
| 1592 | cycle_time_ns_x_100[cas_index]); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1593 | cas_index++; |
| 1594 | } else { |
| 1595 | if (cas_index != 0) |
| 1596 | cas_index++; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1597 | cas_4_0_available = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1598 | } |
| 1599 | |
Stefan Roese | 5d48a84 | 2007-03-31 13:15:06 +0200 | [diff] [blame] | 1600 | if (((cas_bit & 0x08) == 0x08) && (cas_index < 3) && |
| 1601 | (cycle_time_ns_x_100[cas_index] != 0)) { |
| 1602 | max_3_0_tcyc_ns_x_100 = max(max_3_0_tcyc_ns_x_100, |
| 1603 | cycle_time_ns_x_100[cas_index]); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1604 | cas_index++; |
| 1605 | } else { |
| 1606 | if (cas_index != 0) |
| 1607 | cas_index++; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1608 | cas_3_0_available = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1609 | } |
| 1610 | } |
| 1611 | } |
| 1612 | } |
| 1613 | |
| 1614 | /*------------------------------------------------------------------ |
| 1615 | * Set the SDRAM mode, SDRAM_MMODE |
| 1616 | *-----------------------------------------------------------------*/ |
| 1617 | mfsdram(SDRAM_MMODE, mmode); |
| 1618 | mmode = mmode & ~(SDRAM_MMODE_WR_MASK | SDRAM_MMODE_DCL_MASK); |
| 1619 | |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 1620 | /* add 10 here because of rounding problems */ |
| 1621 | cycle_2_0_clk = MULDIV64(ONE_BILLION, 100, max_2_0_tcyc_ns_x_100) + 10; |
| 1622 | cycle_2_5_clk = MULDIV64(ONE_BILLION, 100, max_2_5_tcyc_ns_x_100) + 10; |
| 1623 | cycle_3_0_clk = MULDIV64(ONE_BILLION, 100, max_3_0_tcyc_ns_x_100) + 10; |
| 1624 | cycle_4_0_clk = MULDIV64(ONE_BILLION, 100, max_4_0_tcyc_ns_x_100) + 10; |
| 1625 | cycle_5_0_clk = MULDIV64(ONE_BILLION, 100, max_5_0_tcyc_ns_x_100) + 10; |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 1626 | debug("cycle_3_0_clk=%lu\n", cycle_3_0_clk); |
| 1627 | debug("cycle_4_0_clk=%lu\n", cycle_4_0_clk); |
| 1628 | debug("cycle_5_0_clk=%lu\n", cycle_5_0_clk); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1629 | |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1630 | if (sdram_ddr1 == true) { /* DDR1 */ |
| 1631 | if ((cas_2_0_available == true) && |
| 1632 | (sdram_freq <= cycle_2_0_clk)) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1633 | mmode |= SDRAM_MMODE_DCL_DDR1_2_0_CLK; |
| 1634 | *selected_cas = DDR_CAS_2; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1635 | } else if ((cas_2_5_available == true) && |
| 1636 | (sdram_freq <= cycle_2_5_clk)) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1637 | mmode |= SDRAM_MMODE_DCL_DDR1_2_5_CLK; |
| 1638 | *selected_cas = DDR_CAS_2_5; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1639 | } else if ((cas_3_0_available == true) && |
| 1640 | (sdram_freq <= cycle_3_0_clk)) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1641 | mmode |= SDRAM_MMODE_DCL_DDR1_3_0_CLK; |
| 1642 | *selected_cas = DDR_CAS_3; |
| 1643 | } else { |
| 1644 | printf("ERROR: Cannot find a supported CAS latency with the installed DIMMs.\n"); |
| 1645 | printf("Only DIMMs DDR1 with CAS latencies of 2.0, 2.5, and 3.0 are supported.\n"); |
| 1646 | printf("Make sure the PLB speed is within the supported range of the DIMMs.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 1647 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1648 | } |
| 1649 | } else { /* DDR2 */ |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 1650 | debug("cas_3_0_available=%d\n", cas_3_0_available); |
| 1651 | debug("cas_4_0_available=%d\n", cas_4_0_available); |
| 1652 | debug("cas_5_0_available=%d\n", cas_5_0_available); |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1653 | if ((cas_3_0_available == true) && |
| 1654 | (sdram_freq <= cycle_3_0_clk)) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1655 | mmode |= SDRAM_MMODE_DCL_DDR2_3_0_CLK; |
| 1656 | *selected_cas = DDR_CAS_3; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1657 | } else if ((cas_4_0_available == true) && |
| 1658 | (sdram_freq <= cycle_4_0_clk)) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1659 | mmode |= SDRAM_MMODE_DCL_DDR2_4_0_CLK; |
| 1660 | *selected_cas = DDR_CAS_4; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1661 | } else if ((cas_5_0_available == true) && |
| 1662 | (sdram_freq <= cycle_5_0_clk)) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1663 | mmode |= SDRAM_MMODE_DCL_DDR2_5_0_CLK; |
| 1664 | *selected_cas = DDR_CAS_5; |
| 1665 | } else { |
| 1666 | printf("ERROR: Cannot find a supported CAS latency with the installed DIMMs.\n"); |
| 1667 | printf("Only DIMMs DDR2 with CAS latencies of 3.0, 4.0, and 5.0 are supported.\n"); |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 1668 | printf("Make sure the PLB speed is within the supported range of the DIMMs.\n"); |
| 1669 | printf("cas3=%d cas4=%d cas5=%d\n", |
| 1670 | cas_3_0_available, cas_4_0_available, cas_5_0_available); |
Stefan Roese | 251161b | 2008-07-10 09:58:06 +0200 | [diff] [blame] | 1671 | printf("sdram_freq=%lu cycle3=%lu cycle4=%lu cycle5=%lu\n\n", |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 1672 | sdram_freq, cycle_3_0_clk, cycle_4_0_clk, cycle_5_0_clk); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 1673 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1674 | } |
| 1675 | } |
| 1676 | |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1677 | if (sdram_ddr1 == true) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1678 | mmode |= SDRAM_MMODE_WR_DDR1; |
| 1679 | else { |
| 1680 | |
| 1681 | /* loop through all the DIMM slots on the board */ |
| 1682 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 1683 | /* If a dimm is installed in a particular slot ... */ |
| 1684 | if (dimm_populated[dimm_num] != SDRAM_NONE) |
| 1685 | t_wr_ns = max(t_wr_ns, |
| 1686 | spd_read(iic0_dimm_addr[dimm_num], 36) >> 2); |
| 1687 | } |
| 1688 | |
| 1689 | /* |
| 1690 | * convert from nanoseconds to ddr clocks |
| 1691 | * round up if necessary |
| 1692 | */ |
| 1693 | t_wr_clk = MULDIV64(sdram_freq, t_wr_ns, ONE_BILLION); |
| 1694 | ddr_check = MULDIV64(ONE_BILLION, t_wr_clk, t_wr_ns); |
| 1695 | if (sdram_freq != ddr_check) |
| 1696 | t_wr_clk++; |
| 1697 | |
| 1698 | switch (t_wr_clk) { |
| 1699 | case 0: |
| 1700 | case 1: |
| 1701 | case 2: |
| 1702 | case 3: |
| 1703 | mmode |= SDRAM_MMODE_WR_DDR2_3_CYC; |
| 1704 | break; |
| 1705 | case 4: |
| 1706 | mmode |= SDRAM_MMODE_WR_DDR2_4_CYC; |
| 1707 | break; |
| 1708 | case 5: |
| 1709 | mmode |= SDRAM_MMODE_WR_DDR2_5_CYC; |
| 1710 | break; |
| 1711 | default: |
| 1712 | mmode |= SDRAM_MMODE_WR_DDR2_6_CYC; |
| 1713 | break; |
| 1714 | } |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1715 | *write_recovery = t_wr_clk; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1716 | } |
| 1717 | |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 1718 | debug("CAS latency = %d\n", *selected_cas); |
| 1719 | debug("Write recovery = %d\n", *write_recovery); |
| 1720 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1721 | mtsdram(SDRAM_MMODE, mmode); |
| 1722 | } |
| 1723 | |
| 1724 | /*-----------------------------------------------------------------------------+ |
| 1725 | * program_rtr. |
| 1726 | *-----------------------------------------------------------------------------*/ |
| 1727 | static void program_rtr(unsigned long *dimm_populated, |
| 1728 | unsigned char *iic0_dimm_addr, |
| 1729 | unsigned long num_dimm_banks) |
| 1730 | { |
Stefan Roese | edd73f2 | 2007-10-21 08:12:41 +0200 | [diff] [blame] | 1731 | PPC4xx_SYS_INFO board_cfg; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1732 | unsigned long max_refresh_rate; |
| 1733 | unsigned long dimm_num; |
| 1734 | unsigned long refresh_rate_type; |
| 1735 | unsigned long refresh_rate; |
| 1736 | unsigned long rint; |
| 1737 | unsigned long sdram_freq; |
| 1738 | unsigned long sdr_ddrpll; |
| 1739 | unsigned long val; |
| 1740 | |
| 1741 | /*------------------------------------------------------------------ |
| 1742 | * Get the board configuration info. |
| 1743 | *-----------------------------------------------------------------*/ |
| 1744 | get_sys_info(&board_cfg); |
| 1745 | |
| 1746 | /*------------------------------------------------------------------ |
| 1747 | * Set the SDRAM Refresh Timing Register, SDRAM_RTR |
| 1748 | *-----------------------------------------------------------------*/ |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 1749 | mfsdr(SDR0_DDR0, sdr_ddrpll); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1750 | sdram_freq = ((board_cfg.freqPLB) * SDR0_DDR0_DDRM_DECODE(sdr_ddrpll)); |
| 1751 | |
| 1752 | max_refresh_rate = 0; |
| 1753 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 1754 | if (dimm_populated[dimm_num] != SDRAM_NONE) { |
| 1755 | |
| 1756 | refresh_rate_type = spd_read(iic0_dimm_addr[dimm_num], 12); |
| 1757 | refresh_rate_type &= 0x7F; |
| 1758 | switch (refresh_rate_type) { |
| 1759 | case 0: |
| 1760 | refresh_rate = 15625; |
| 1761 | break; |
| 1762 | case 1: |
| 1763 | refresh_rate = 3906; |
| 1764 | break; |
| 1765 | case 2: |
| 1766 | refresh_rate = 7812; |
| 1767 | break; |
| 1768 | case 3: |
| 1769 | refresh_rate = 31250; |
| 1770 | break; |
| 1771 | case 4: |
| 1772 | refresh_rate = 62500; |
| 1773 | break; |
| 1774 | case 5: |
| 1775 | refresh_rate = 125000; |
| 1776 | break; |
| 1777 | default: |
| 1778 | refresh_rate = 0; |
| 1779 | printf("ERROR: DIMM %d unsupported refresh rate/type.\n", |
| 1780 | (unsigned int)dimm_num); |
| 1781 | printf("Replace the DIMM module with a supported DIMM.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 1782 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1783 | break; |
| 1784 | } |
| 1785 | |
| 1786 | max_refresh_rate = max(max_refresh_rate, refresh_rate); |
| 1787 | } |
| 1788 | } |
| 1789 | |
| 1790 | rint = MULDIV64(sdram_freq, max_refresh_rate, ONE_BILLION); |
| 1791 | mfsdram(SDRAM_RTR, val); |
| 1792 | mtsdram(SDRAM_RTR, (val & ~SDRAM_RTR_RINT_MASK) | |
| 1793 | (SDRAM_RTR_RINT_ENCODE(rint))); |
| 1794 | } |
| 1795 | |
| 1796 | /*------------------------------------------------------------------ |
| 1797 | * This routine programs the SDRAM_TRx registers. |
| 1798 | *-----------------------------------------------------------------*/ |
| 1799 | static void program_tr(unsigned long *dimm_populated, |
| 1800 | unsigned char *iic0_dimm_addr, |
| 1801 | unsigned long num_dimm_banks) |
| 1802 | { |
| 1803 | unsigned long dimm_num; |
| 1804 | unsigned long sdram_ddr1; |
| 1805 | unsigned long t_rp_ns; |
| 1806 | unsigned long t_rcd_ns; |
| 1807 | unsigned long t_rrd_ns; |
| 1808 | unsigned long t_ras_ns; |
| 1809 | unsigned long t_rc_ns; |
| 1810 | unsigned long t_rfc_ns; |
| 1811 | unsigned long t_wpc_ns; |
| 1812 | unsigned long t_wtr_ns; |
| 1813 | unsigned long t_rpc_ns; |
| 1814 | unsigned long t_rp_clk; |
| 1815 | unsigned long t_rcd_clk; |
| 1816 | unsigned long t_rrd_clk; |
| 1817 | unsigned long t_ras_clk; |
| 1818 | unsigned long t_rc_clk; |
| 1819 | unsigned long t_rfc_clk; |
| 1820 | unsigned long t_wpc_clk; |
| 1821 | unsigned long t_wtr_clk; |
| 1822 | unsigned long t_rpc_clk; |
| 1823 | unsigned long sdtr1, sdtr2, sdtr3; |
| 1824 | unsigned long ddr_check; |
| 1825 | unsigned long sdram_freq; |
| 1826 | unsigned long sdr_ddrpll; |
| 1827 | |
Stefan Roese | edd73f2 | 2007-10-21 08:12:41 +0200 | [diff] [blame] | 1828 | PPC4xx_SYS_INFO board_cfg; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1829 | |
| 1830 | /*------------------------------------------------------------------ |
| 1831 | * Get the board configuration info. |
| 1832 | *-----------------------------------------------------------------*/ |
| 1833 | get_sys_info(&board_cfg); |
| 1834 | |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 1835 | mfsdr(SDR0_DDR0, sdr_ddrpll); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1836 | sdram_freq = ((board_cfg.freqPLB) * SDR0_DDR0_DDRM_DECODE(sdr_ddrpll)); |
| 1837 | |
| 1838 | /*------------------------------------------------------------------ |
| 1839 | * Handle the timing. We need to find the worst case timing of all |
| 1840 | * the dimm modules installed. |
| 1841 | *-----------------------------------------------------------------*/ |
| 1842 | t_rp_ns = 0; |
| 1843 | t_rrd_ns = 0; |
| 1844 | t_rcd_ns = 0; |
| 1845 | t_ras_ns = 0; |
| 1846 | t_rc_ns = 0; |
| 1847 | t_rfc_ns = 0; |
| 1848 | t_wpc_ns = 0; |
| 1849 | t_wtr_ns = 0; |
| 1850 | t_rpc_ns = 0; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1851 | sdram_ddr1 = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1852 | |
| 1853 | /* loop through all the DIMM slots on the board */ |
| 1854 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 1855 | /* If a dimm is installed in a particular slot ... */ |
| 1856 | if (dimm_populated[dimm_num] != SDRAM_NONE) { |
| 1857 | if (dimm_populated[dimm_num] == SDRAM_DDR2) |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1858 | sdram_ddr1 = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1859 | else |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1860 | sdram_ddr1 = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1861 | |
| 1862 | t_rcd_ns = max(t_rcd_ns, spd_read(iic0_dimm_addr[dimm_num], 29) >> 2); |
| 1863 | t_rrd_ns = max(t_rrd_ns, spd_read(iic0_dimm_addr[dimm_num], 28) >> 2); |
| 1864 | t_rp_ns = max(t_rp_ns, spd_read(iic0_dimm_addr[dimm_num], 27) >> 2); |
| 1865 | t_ras_ns = max(t_ras_ns, spd_read(iic0_dimm_addr[dimm_num], 30)); |
| 1866 | t_rc_ns = max(t_rc_ns, spd_read(iic0_dimm_addr[dimm_num], 41)); |
| 1867 | t_rfc_ns = max(t_rfc_ns, spd_read(iic0_dimm_addr[dimm_num], 42)); |
| 1868 | } |
| 1869 | } |
| 1870 | |
| 1871 | /*------------------------------------------------------------------ |
| 1872 | * Set the SDRAM Timing Reg 1, SDRAM_TR1 |
| 1873 | *-----------------------------------------------------------------*/ |
| 1874 | mfsdram(SDRAM_SDTR1, sdtr1); |
| 1875 | sdtr1 &= ~(SDRAM_SDTR1_LDOF_MASK | SDRAM_SDTR1_RTW_MASK | |
| 1876 | SDRAM_SDTR1_WTWO_MASK | SDRAM_SDTR1_RTRO_MASK); |
| 1877 | |
| 1878 | /* default values */ |
| 1879 | sdtr1 |= SDRAM_SDTR1_LDOF_2_CLK; |
| 1880 | sdtr1 |= SDRAM_SDTR1_RTW_2_CLK; |
| 1881 | |
| 1882 | /* normal operations */ |
| 1883 | sdtr1 |= SDRAM_SDTR1_WTWO_0_CLK; |
| 1884 | sdtr1 |= SDRAM_SDTR1_RTRO_1_CLK; |
| 1885 | |
| 1886 | mtsdram(SDRAM_SDTR1, sdtr1); |
| 1887 | |
| 1888 | /*------------------------------------------------------------------ |
| 1889 | * Set the SDRAM Timing Reg 2, SDRAM_TR2 |
| 1890 | *-----------------------------------------------------------------*/ |
| 1891 | mfsdram(SDRAM_SDTR2, sdtr2); |
| 1892 | sdtr2 &= ~(SDRAM_SDTR2_RCD_MASK | SDRAM_SDTR2_WTR_MASK | |
| 1893 | SDRAM_SDTR2_XSNR_MASK | SDRAM_SDTR2_WPC_MASK | |
| 1894 | SDRAM_SDTR2_RPC_MASK | SDRAM_SDTR2_RP_MASK | |
| 1895 | SDRAM_SDTR2_RRD_MASK); |
| 1896 | |
| 1897 | /* |
| 1898 | * convert t_rcd from nanoseconds to ddr clocks |
| 1899 | * round up if necessary |
| 1900 | */ |
| 1901 | t_rcd_clk = MULDIV64(sdram_freq, t_rcd_ns, ONE_BILLION); |
| 1902 | ddr_check = MULDIV64(ONE_BILLION, t_rcd_clk, t_rcd_ns); |
| 1903 | if (sdram_freq != ddr_check) |
| 1904 | t_rcd_clk++; |
| 1905 | |
| 1906 | switch (t_rcd_clk) { |
| 1907 | case 0: |
| 1908 | case 1: |
| 1909 | sdtr2 |= SDRAM_SDTR2_RCD_1_CLK; |
| 1910 | break; |
| 1911 | case 2: |
| 1912 | sdtr2 |= SDRAM_SDTR2_RCD_2_CLK; |
| 1913 | break; |
| 1914 | case 3: |
| 1915 | sdtr2 |= SDRAM_SDTR2_RCD_3_CLK; |
| 1916 | break; |
| 1917 | case 4: |
| 1918 | sdtr2 |= SDRAM_SDTR2_RCD_4_CLK; |
| 1919 | break; |
| 1920 | default: |
| 1921 | sdtr2 |= SDRAM_SDTR2_RCD_5_CLK; |
| 1922 | break; |
| 1923 | } |
| 1924 | |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 1925 | if (sdram_ddr1 == true) { /* DDR1 */ |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 1926 | if (sdram_freq < 200000000) { |
| 1927 | sdtr2 |= SDRAM_SDTR2_WTR_1_CLK; |
| 1928 | sdtr2 |= SDRAM_SDTR2_WPC_2_CLK; |
| 1929 | sdtr2 |= SDRAM_SDTR2_RPC_2_CLK; |
| 1930 | } else { |
| 1931 | sdtr2 |= SDRAM_SDTR2_WTR_2_CLK; |
| 1932 | sdtr2 |= SDRAM_SDTR2_WPC_3_CLK; |
| 1933 | sdtr2 |= SDRAM_SDTR2_RPC_2_CLK; |
| 1934 | } |
| 1935 | } else { /* DDR2 */ |
| 1936 | /* loop through all the DIMM slots on the board */ |
| 1937 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 1938 | /* If a dimm is installed in a particular slot ... */ |
| 1939 | if (dimm_populated[dimm_num] != SDRAM_NONE) { |
| 1940 | t_wpc_ns = max(t_wtr_ns, spd_read(iic0_dimm_addr[dimm_num], 36) >> 2); |
| 1941 | t_wtr_ns = max(t_wtr_ns, spd_read(iic0_dimm_addr[dimm_num], 37) >> 2); |
| 1942 | t_rpc_ns = max(t_rpc_ns, spd_read(iic0_dimm_addr[dimm_num], 38) >> 2); |
| 1943 | } |
| 1944 | } |
| 1945 | |
| 1946 | /* |
| 1947 | * convert from nanoseconds to ddr clocks |
| 1948 | * round up if necessary |
| 1949 | */ |
| 1950 | t_wpc_clk = MULDIV64(sdram_freq, t_wpc_ns, ONE_BILLION); |
| 1951 | ddr_check = MULDIV64(ONE_BILLION, t_wpc_clk, t_wpc_ns); |
| 1952 | if (sdram_freq != ddr_check) |
| 1953 | t_wpc_clk++; |
| 1954 | |
| 1955 | switch (t_wpc_clk) { |
| 1956 | case 0: |
| 1957 | case 1: |
| 1958 | case 2: |
| 1959 | sdtr2 |= SDRAM_SDTR2_WPC_2_CLK; |
| 1960 | break; |
| 1961 | case 3: |
| 1962 | sdtr2 |= SDRAM_SDTR2_WPC_3_CLK; |
| 1963 | break; |
| 1964 | case 4: |
| 1965 | sdtr2 |= SDRAM_SDTR2_WPC_4_CLK; |
| 1966 | break; |
| 1967 | case 5: |
| 1968 | sdtr2 |= SDRAM_SDTR2_WPC_5_CLK; |
| 1969 | break; |
| 1970 | default: |
| 1971 | sdtr2 |= SDRAM_SDTR2_WPC_6_CLK; |
| 1972 | break; |
| 1973 | } |
| 1974 | |
| 1975 | /* |
| 1976 | * convert from nanoseconds to ddr clocks |
| 1977 | * round up if necessary |
| 1978 | */ |
| 1979 | t_wtr_clk = MULDIV64(sdram_freq, t_wtr_ns, ONE_BILLION); |
| 1980 | ddr_check = MULDIV64(ONE_BILLION, t_wtr_clk, t_wtr_ns); |
| 1981 | if (sdram_freq != ddr_check) |
| 1982 | t_wtr_clk++; |
| 1983 | |
| 1984 | switch (t_wtr_clk) { |
| 1985 | case 0: |
| 1986 | case 1: |
| 1987 | sdtr2 |= SDRAM_SDTR2_WTR_1_CLK; |
| 1988 | break; |
| 1989 | case 2: |
| 1990 | sdtr2 |= SDRAM_SDTR2_WTR_2_CLK; |
| 1991 | break; |
| 1992 | case 3: |
| 1993 | sdtr2 |= SDRAM_SDTR2_WTR_3_CLK; |
| 1994 | break; |
| 1995 | default: |
| 1996 | sdtr2 |= SDRAM_SDTR2_WTR_4_CLK; |
| 1997 | break; |
| 1998 | } |
| 1999 | |
| 2000 | /* |
| 2001 | * convert from nanoseconds to ddr clocks |
| 2002 | * round up if necessary |
| 2003 | */ |
| 2004 | t_rpc_clk = MULDIV64(sdram_freq, t_rpc_ns, ONE_BILLION); |
| 2005 | ddr_check = MULDIV64(ONE_BILLION, t_rpc_clk, t_rpc_ns); |
| 2006 | if (sdram_freq != ddr_check) |
| 2007 | t_rpc_clk++; |
| 2008 | |
| 2009 | switch (t_rpc_clk) { |
| 2010 | case 0: |
| 2011 | case 1: |
| 2012 | case 2: |
| 2013 | sdtr2 |= SDRAM_SDTR2_RPC_2_CLK; |
| 2014 | break; |
| 2015 | case 3: |
| 2016 | sdtr2 |= SDRAM_SDTR2_RPC_3_CLK; |
| 2017 | break; |
| 2018 | default: |
| 2019 | sdtr2 |= SDRAM_SDTR2_RPC_4_CLK; |
| 2020 | break; |
| 2021 | } |
| 2022 | } |
| 2023 | |
| 2024 | /* default value */ |
| 2025 | sdtr2 |= SDRAM_SDTR2_XSNR_16_CLK; |
| 2026 | |
| 2027 | /* |
| 2028 | * convert t_rrd from nanoseconds to ddr clocks |
| 2029 | * round up if necessary |
| 2030 | */ |
| 2031 | t_rrd_clk = MULDIV64(sdram_freq, t_rrd_ns, ONE_BILLION); |
| 2032 | ddr_check = MULDIV64(ONE_BILLION, t_rrd_clk, t_rrd_ns); |
| 2033 | if (sdram_freq != ddr_check) |
| 2034 | t_rrd_clk++; |
| 2035 | |
| 2036 | if (t_rrd_clk == 3) |
| 2037 | sdtr2 |= SDRAM_SDTR2_RRD_3_CLK; |
| 2038 | else |
| 2039 | sdtr2 |= SDRAM_SDTR2_RRD_2_CLK; |
| 2040 | |
| 2041 | /* |
| 2042 | * convert t_rp from nanoseconds to ddr clocks |
| 2043 | * round up if necessary |
| 2044 | */ |
| 2045 | t_rp_clk = MULDIV64(sdram_freq, t_rp_ns, ONE_BILLION); |
| 2046 | ddr_check = MULDIV64(ONE_BILLION, t_rp_clk, t_rp_ns); |
| 2047 | if (sdram_freq != ddr_check) |
| 2048 | t_rp_clk++; |
| 2049 | |
| 2050 | switch (t_rp_clk) { |
| 2051 | case 0: |
| 2052 | case 1: |
| 2053 | case 2: |
| 2054 | case 3: |
| 2055 | sdtr2 |= SDRAM_SDTR2_RP_3_CLK; |
| 2056 | break; |
| 2057 | case 4: |
| 2058 | sdtr2 |= SDRAM_SDTR2_RP_4_CLK; |
| 2059 | break; |
| 2060 | case 5: |
| 2061 | sdtr2 |= SDRAM_SDTR2_RP_5_CLK; |
| 2062 | break; |
| 2063 | case 6: |
| 2064 | sdtr2 |= SDRAM_SDTR2_RP_6_CLK; |
| 2065 | break; |
| 2066 | default: |
| 2067 | sdtr2 |= SDRAM_SDTR2_RP_7_CLK; |
| 2068 | break; |
| 2069 | } |
| 2070 | |
| 2071 | mtsdram(SDRAM_SDTR2, sdtr2); |
| 2072 | |
| 2073 | /*------------------------------------------------------------------ |
| 2074 | * Set the SDRAM Timing Reg 3, SDRAM_TR3 |
| 2075 | *-----------------------------------------------------------------*/ |
| 2076 | mfsdram(SDRAM_SDTR3, sdtr3); |
| 2077 | sdtr3 &= ~(SDRAM_SDTR3_RAS_MASK | SDRAM_SDTR3_RC_MASK | |
| 2078 | SDRAM_SDTR3_XCS_MASK | SDRAM_SDTR3_RFC_MASK); |
| 2079 | |
| 2080 | /* |
| 2081 | * convert t_ras from nanoseconds to ddr clocks |
| 2082 | * round up if necessary |
| 2083 | */ |
| 2084 | t_ras_clk = MULDIV64(sdram_freq, t_ras_ns, ONE_BILLION); |
| 2085 | ddr_check = MULDIV64(ONE_BILLION, t_ras_clk, t_ras_ns); |
| 2086 | if (sdram_freq != ddr_check) |
| 2087 | t_ras_clk++; |
| 2088 | |
| 2089 | sdtr3 |= SDRAM_SDTR3_RAS_ENCODE(t_ras_clk); |
| 2090 | |
| 2091 | /* |
| 2092 | * convert t_rc from nanoseconds to ddr clocks |
| 2093 | * round up if necessary |
| 2094 | */ |
| 2095 | t_rc_clk = MULDIV64(sdram_freq, t_rc_ns, ONE_BILLION); |
| 2096 | ddr_check = MULDIV64(ONE_BILLION, t_rc_clk, t_rc_ns); |
| 2097 | if (sdram_freq != ddr_check) |
| 2098 | t_rc_clk++; |
| 2099 | |
| 2100 | sdtr3 |= SDRAM_SDTR3_RC_ENCODE(t_rc_clk); |
| 2101 | |
| 2102 | /* default xcs value */ |
| 2103 | sdtr3 |= SDRAM_SDTR3_XCS; |
| 2104 | |
| 2105 | /* |
| 2106 | * convert t_rfc from nanoseconds to ddr clocks |
| 2107 | * round up if necessary |
| 2108 | */ |
| 2109 | t_rfc_clk = MULDIV64(sdram_freq, t_rfc_ns, ONE_BILLION); |
| 2110 | ddr_check = MULDIV64(ONE_BILLION, t_rfc_clk, t_rfc_ns); |
| 2111 | if (sdram_freq != ddr_check) |
| 2112 | t_rfc_clk++; |
| 2113 | |
| 2114 | sdtr3 |= SDRAM_SDTR3_RFC_ENCODE(t_rfc_clk); |
| 2115 | |
| 2116 | mtsdram(SDRAM_SDTR3, sdtr3); |
| 2117 | } |
| 2118 | |
| 2119 | /*-----------------------------------------------------------------------------+ |
| 2120 | * program_bxcf. |
| 2121 | *-----------------------------------------------------------------------------*/ |
| 2122 | static void program_bxcf(unsigned long *dimm_populated, |
| 2123 | unsigned char *iic0_dimm_addr, |
| 2124 | unsigned long num_dimm_banks) |
| 2125 | { |
| 2126 | unsigned long dimm_num; |
| 2127 | unsigned long num_col_addr; |
| 2128 | unsigned long num_ranks; |
| 2129 | unsigned long num_banks; |
| 2130 | unsigned long mode; |
| 2131 | unsigned long ind_rank; |
| 2132 | unsigned long ind; |
| 2133 | unsigned long ind_bank; |
| 2134 | unsigned long bank_0_populated; |
| 2135 | |
| 2136 | /*------------------------------------------------------------------ |
| 2137 | * Set the BxCF regs. First, wipe out the bank config registers. |
| 2138 | *-----------------------------------------------------------------*/ |
Stefan Roese | edd73f2 | 2007-10-21 08:12:41 +0200 | [diff] [blame] | 2139 | mtsdram(SDRAM_MB0CF, 0x00000000); |
| 2140 | mtsdram(SDRAM_MB1CF, 0x00000000); |
| 2141 | mtsdram(SDRAM_MB2CF, 0x00000000); |
| 2142 | mtsdram(SDRAM_MB3CF, 0x00000000); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2143 | |
| 2144 | mode = SDRAM_BXCF_M_BE_ENABLE; |
| 2145 | |
| 2146 | bank_0_populated = 0; |
| 2147 | |
| 2148 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 2149 | if (dimm_populated[dimm_num] != SDRAM_NONE) { |
| 2150 | num_col_addr = spd_read(iic0_dimm_addr[dimm_num], 4); |
| 2151 | num_ranks = spd_read(iic0_dimm_addr[dimm_num], 5); |
| 2152 | if ((spd_read(iic0_dimm_addr[dimm_num], 2)) == 0x08) |
| 2153 | num_ranks = (num_ranks & 0x0F) +1; |
| 2154 | else |
| 2155 | num_ranks = num_ranks & 0x0F; |
| 2156 | |
| 2157 | num_banks = spd_read(iic0_dimm_addr[dimm_num], 17); |
| 2158 | |
| 2159 | for (ind_bank = 0; ind_bank < 2; ind_bank++) { |
| 2160 | if (num_banks == 4) |
| 2161 | ind = 0; |
| 2162 | else |
Stefan Roese | 964754e | 2008-04-30 10:49:43 +0200 | [diff] [blame] | 2163 | ind = 5 << 8; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2164 | switch (num_col_addr) { |
| 2165 | case 0x08: |
| 2166 | mode |= (SDRAM_BXCF_M_AM_0 + ind); |
| 2167 | break; |
| 2168 | case 0x09: |
| 2169 | mode |= (SDRAM_BXCF_M_AM_1 + ind); |
| 2170 | break; |
| 2171 | case 0x0A: |
| 2172 | mode |= (SDRAM_BXCF_M_AM_2 + ind); |
| 2173 | break; |
| 2174 | case 0x0B: |
| 2175 | mode |= (SDRAM_BXCF_M_AM_3 + ind); |
| 2176 | break; |
| 2177 | case 0x0C: |
| 2178 | mode |= (SDRAM_BXCF_M_AM_4 + ind); |
| 2179 | break; |
| 2180 | default: |
| 2181 | printf("DDR-SDRAM: DIMM %d BxCF configuration.\n", |
| 2182 | (unsigned int)dimm_num); |
| 2183 | printf("ERROR: Unsupported value for number of " |
| 2184 | "column addresses: %d.\n", (unsigned int)num_col_addr); |
| 2185 | printf("Replace the DIMM module with a supported DIMM.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 2186 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2187 | } |
| 2188 | } |
| 2189 | |
| 2190 | if ((dimm_populated[dimm_num] != SDRAM_NONE)&& (dimm_num ==1)) |
| 2191 | bank_0_populated = 1; |
| 2192 | |
| 2193 | for (ind_rank = 0; ind_rank < num_ranks; ind_rank++) { |
Stefan Roese | edd73f2 | 2007-10-21 08:12:41 +0200 | [diff] [blame] | 2194 | mtsdram(SDRAM_MB0CF + |
| 2195 | ((dimm_num + bank_0_populated + ind_rank) << 2), |
| 2196 | mode); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2197 | } |
| 2198 | } |
| 2199 | } |
| 2200 | } |
| 2201 | |
| 2202 | /*------------------------------------------------------------------ |
| 2203 | * program memory queue. |
| 2204 | *-----------------------------------------------------------------*/ |
| 2205 | static void program_memory_queue(unsigned long *dimm_populated, |
| 2206 | unsigned char *iic0_dimm_addr, |
| 2207 | unsigned long num_dimm_banks) |
| 2208 | { |
| 2209 | unsigned long dimm_num; |
Stefan Roese | 0203a97 | 2008-07-09 17:33:57 +0200 | [diff] [blame] | 2210 | phys_size_t rank_base_addr; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2211 | unsigned long rank_reg; |
Stefan Roese | 0203a97 | 2008-07-09 17:33:57 +0200 | [diff] [blame] | 2212 | phys_size_t rank_size_bytes; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2213 | unsigned long rank_size_id; |
| 2214 | unsigned long num_ranks; |
| 2215 | unsigned long baseadd_size; |
| 2216 | unsigned long i; |
| 2217 | unsigned long bank_0_populated = 0; |
Stefan Roese | 0203a97 | 2008-07-09 17:33:57 +0200 | [diff] [blame] | 2218 | phys_size_t total_size = 0; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2219 | |
| 2220 | /*------------------------------------------------------------------ |
| 2221 | * Reset the rank_base_address. |
| 2222 | *-----------------------------------------------------------------*/ |
| 2223 | rank_reg = SDRAM_R0BAS; |
| 2224 | |
| 2225 | rank_base_addr = 0x00000000; |
| 2226 | |
| 2227 | for (dimm_num = 0; dimm_num < num_dimm_banks; dimm_num++) { |
| 2228 | if (dimm_populated[dimm_num] != SDRAM_NONE) { |
| 2229 | num_ranks = spd_read(iic0_dimm_addr[dimm_num], 5); |
| 2230 | if ((spd_read(iic0_dimm_addr[dimm_num], 2)) == 0x08) |
| 2231 | num_ranks = (num_ranks & 0x0F) + 1; |
| 2232 | else |
| 2233 | num_ranks = num_ranks & 0x0F; |
| 2234 | |
| 2235 | rank_size_id = spd_read(iic0_dimm_addr[dimm_num], 31); |
| 2236 | |
| 2237 | /*------------------------------------------------------------------ |
| 2238 | * Set the sizes |
| 2239 | *-----------------------------------------------------------------*/ |
| 2240 | baseadd_size = 0; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2241 | switch (rank_size_id) { |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2242 | case 0x01: |
| 2243 | baseadd_size |= SDRAM_RXBAS_SDSZ_1024; |
| 2244 | total_size = 1024; |
| 2245 | break; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2246 | case 0x02: |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2247 | baseadd_size |= SDRAM_RXBAS_SDSZ_2048; |
| 2248 | total_size = 2048; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2249 | break; |
| 2250 | case 0x04: |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2251 | baseadd_size |= SDRAM_RXBAS_SDSZ_4096; |
| 2252 | total_size = 4096; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2253 | break; |
| 2254 | case 0x08: |
| 2255 | baseadd_size |= SDRAM_RXBAS_SDSZ_32; |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2256 | total_size = 32; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2257 | break; |
| 2258 | case 0x10: |
| 2259 | baseadd_size |= SDRAM_RXBAS_SDSZ_64; |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2260 | total_size = 64; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2261 | break; |
| 2262 | case 0x20: |
| 2263 | baseadd_size |= SDRAM_RXBAS_SDSZ_128; |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2264 | total_size = 128; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2265 | break; |
| 2266 | case 0x40: |
| 2267 | baseadd_size |= SDRAM_RXBAS_SDSZ_256; |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2268 | total_size = 256; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2269 | break; |
| 2270 | case 0x80: |
| 2271 | baseadd_size |= SDRAM_RXBAS_SDSZ_512; |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2272 | total_size = 512; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2273 | break; |
| 2274 | default: |
| 2275 | printf("DDR-SDRAM: DIMM %d memory queue configuration.\n", |
| 2276 | (unsigned int)dimm_num); |
| 2277 | printf("ERROR: Unsupported value for the banksize: %d.\n", |
| 2278 | (unsigned int)rank_size_id); |
| 2279 | printf("Replace the DIMM module with a supported DIMM.\n\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 2280 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2281 | } |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2282 | rank_size_bytes = total_size << 20; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2283 | |
| 2284 | if ((dimm_populated[dimm_num] != SDRAM_NONE) && (dimm_num == 1)) |
| 2285 | bank_0_populated = 1; |
| 2286 | |
| 2287 | for (i = 0; i < num_ranks; i++) { |
| 2288 | mtdcr_any(rank_reg+i+dimm_num+bank_0_populated, |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 2289 | (SDRAM_RXBAS_SDBA_ENCODE(rank_base_addr) | |
| 2290 | baseadd_size)); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2291 | rank_base_addr += rank_size_bytes; |
| 2292 | } |
| 2293 | } |
| 2294 | } |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2295 | |
Prodyut Hazarika | 038f0d8 | 2008-08-20 09:38:51 -0700 | [diff] [blame] | 2296 | #if defined(CONFIG_440SP) || defined(CONFIG_440SPE) || \ |
| 2297 | defined(CONFIG_460EX) || defined(CONFIG_460GT) || \ |
| 2298 | defined(CONFIG_460SX) |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2299 | /* |
Prodyut Hazarika | 038f0d8 | 2008-08-20 09:38:51 -0700 | [diff] [blame] | 2300 | * Enable high bandwidth access |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2301 | * This is currently not used, but with this setup |
| 2302 | * it is possible to use it later on in e.g. the Linux |
| 2303 | * EMAC driver for performance gain. |
| 2304 | */ |
| 2305 | mtdcr(SDRAM_PLBADDULL, 0x00000000); /* MQ0_BAUL */ |
| 2306 | mtdcr(SDRAM_PLBADDUHB, 0x00000008); /* MQ0_BAUH */ |
Prodyut Hazarika | 038f0d8 | 2008-08-20 09:38:51 -0700 | [diff] [blame] | 2307 | |
| 2308 | /* |
| 2309 | * Set optimal value for Memory Queue HB/LL Configuration registers |
| 2310 | */ |
Yuri Tikhonov | bbfab70 | 2008-10-17 12:54:18 +0200 | [diff] [blame] | 2311 | mtdcr(SDRAM_CONF1HB, (mfdcr(SDRAM_CONF1HB) & ~SDRAM_CONF1HB_MASK) | |
| 2312 | SDRAM_CONF1HB_AAFR | SDRAM_CONF1HB_RPEN | SDRAM_CONF1HB_RFTE | |
| 2313 | SDRAM_CONF1HB_RPLM | SDRAM_CONF1HB_WRCL); |
| 2314 | mtdcr(SDRAM_CONF1LL, (mfdcr(SDRAM_CONF1LL) & ~SDRAM_CONF1LL_MASK) | |
| 2315 | SDRAM_CONF1LL_AAFR | SDRAM_CONF1LL_RPEN | SDRAM_CONF1LL_RFTE | |
| 2316 | SDRAM_CONF1LL_RPLM); |
Stefan Roese | 1abbbd0 | 2008-08-21 11:05:03 +0200 | [diff] [blame] | 2317 | mtdcr(SDRAM_CONFPATHB, mfdcr(SDRAM_CONFPATHB) | SDRAM_CONFPATHB_TPEN); |
Stefan Roese | bdd13d1 | 2008-03-11 15:05:26 +0100 | [diff] [blame] | 2318 | #endif |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2319 | } |
| 2320 | |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 2321 | #ifdef CONFIG_DDR_ECC |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2322 | /*-----------------------------------------------------------------------------+ |
| 2323 | * program_ecc. |
| 2324 | *-----------------------------------------------------------------------------*/ |
| 2325 | static void program_ecc(unsigned long *dimm_populated, |
| 2326 | unsigned char *iic0_dimm_addr, |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 2327 | unsigned long num_dimm_banks, |
| 2328 | unsigned long tlb_word2_i_value) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2329 | { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2330 | unsigned long dimm_num; |
| 2331 | unsigned long ecc; |
| 2332 | |
| 2333 | ecc = 0; |
| 2334 | /* loop through all the DIMM slots on the board */ |
| 2335 | for (dimm_num = 0; dimm_num < MAXDIMMS; dimm_num++) { |
| 2336 | /* If a dimm is installed in a particular slot ... */ |
| 2337 | if (dimm_populated[dimm_num] != SDRAM_NONE) |
| 2338 | ecc = max(ecc, spd_read(iic0_dimm_addr[dimm_num], 11)); |
| 2339 | } |
| 2340 | if (ecc == 0) |
| 2341 | return; |
Stefan Roese | bad4111 | 2007-03-01 21:11:36 +0100 | [diff] [blame] | 2342 | |
Felix Radensky | 0e92536 | 2009-09-27 23:56:12 +0200 | [diff] [blame] | 2343 | do_program_ecc(tlb_word2_i_value); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2344 | } |
Stefan Roese | b39ef63 | 2007-03-08 10:06:09 +0100 | [diff] [blame] | 2345 | #endif |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2346 | |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 2347 | #if !defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2348 | /*-----------------------------------------------------------------------------+ |
| 2349 | * program_DQS_calibration. |
| 2350 | *-----------------------------------------------------------------------------*/ |
| 2351 | static void program_DQS_calibration(unsigned long *dimm_populated, |
| 2352 | unsigned char *iic0_dimm_addr, |
| 2353 | unsigned long num_dimm_banks) |
| 2354 | { |
| 2355 | unsigned long val; |
| 2356 | |
| 2357 | #ifdef HARD_CODED_DQS /* calibration test with hardvalues */ |
| 2358 | mtsdram(SDRAM_RQDC, 0x80000037); |
| 2359 | mtsdram(SDRAM_RDCC, 0x40000000); |
| 2360 | mtsdram(SDRAM_RFDC, 0x000001DF); |
| 2361 | |
| 2362 | test(); |
| 2363 | #else |
| 2364 | /*------------------------------------------------------------------ |
| 2365 | * Program RDCC register |
| 2366 | * Read sample cycle auto-update enable |
| 2367 | *-----------------------------------------------------------------*/ |
| 2368 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2369 | mfsdram(SDRAM_RDCC, val); |
| 2370 | mtsdram(SDRAM_RDCC, |
| 2371 | (val & ~(SDRAM_RDCC_RDSS_MASK | SDRAM_RDCC_RSAE_MASK)) |
Stefan Roese | e3060b0 | 2008-01-05 09:12:41 +0100 | [diff] [blame] | 2372 | | SDRAM_RDCC_RSAE_ENABLE); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2373 | |
| 2374 | /*------------------------------------------------------------------ |
| 2375 | * Program RQDC register |
| 2376 | * Internal DQS delay mechanism enable |
| 2377 | *-----------------------------------------------------------------*/ |
| 2378 | mtsdram(SDRAM_RQDC, (SDRAM_RQDC_RQDE_ENABLE|SDRAM_RQDC_RQFD_ENCODE(0x38))); |
| 2379 | |
| 2380 | /*------------------------------------------------------------------ |
| 2381 | * Program RFDC register |
| 2382 | * Set Feedback Fractional Oversample |
| 2383 | * Auto-detect read sample cycle enable |
Prodyut Hazarika | 52b6bec | 2008-08-27 16:39:00 -0700 | [diff] [blame] | 2384 | * Set RFOS to 1/4 of memclk cycle (0x3f) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2385 | *-----------------------------------------------------------------*/ |
| 2386 | mfsdram(SDRAM_RFDC, val); |
| 2387 | mtsdram(SDRAM_RFDC, |
| 2388 | (val & ~(SDRAM_RFDC_ARSE_MASK | SDRAM_RFDC_RFOS_MASK | |
| 2389 | SDRAM_RFDC_RFFD_MASK)) |
Prodyut Hazarika | 52b6bec | 2008-08-27 16:39:00 -0700 | [diff] [blame] | 2390 | | (SDRAM_RFDC_ARSE_ENABLE | SDRAM_RFDC_RFOS_ENCODE(0x3f) | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2391 | SDRAM_RFDC_RFFD_ENCODE(0))); |
| 2392 | |
| 2393 | DQS_calibration_process(); |
| 2394 | #endif |
| 2395 | } |
| 2396 | |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2397 | static int short_mem_test(void) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2398 | { |
| 2399 | u32 *membase; |
| 2400 | u32 bxcr_num; |
| 2401 | u32 bxcf; |
| 2402 | int i; |
| 2403 | int j; |
Stefan Roese | 0203a97 | 2008-07-09 17:33:57 +0200 | [diff] [blame] | 2404 | phys_size_t base_addr; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2405 | u32 test[NUMMEMTESTS][NUMMEMWORDS] = { |
| 2406 | {0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, |
| 2407 | 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF}, |
| 2408 | {0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000, |
| 2409 | 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000}, |
| 2410 | {0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555, |
| 2411 | 0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555}, |
| 2412 | {0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA, |
| 2413 | 0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA}, |
| 2414 | {0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A, |
| 2415 | 0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A}, |
| 2416 | {0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5, |
| 2417 | 0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5}, |
| 2418 | {0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA, |
| 2419 | 0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA}, |
| 2420 | {0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55, |
| 2421 | 0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55} }; |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2422 | int l; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2423 | |
| 2424 | for (bxcr_num = 0; bxcr_num < MAXBXCF; bxcr_num++) { |
| 2425 | mfsdram(SDRAM_MB0CF + (bxcr_num << 2), bxcf); |
| 2426 | |
| 2427 | /* Banks enabled */ |
| 2428 | if ((bxcf & SDRAM_BXCF_M_BE_MASK) == SDRAM_BXCF_M_BE_ENABLE) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2429 | /* Bank is enabled */ |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2430 | |
Stefan Roese | 0203a97 | 2008-07-09 17:33:57 +0200 | [diff] [blame] | 2431 | /* |
| 2432 | * Only run test on accessable memory (below 2GB) |
| 2433 | */ |
| 2434 | base_addr = SDRAM_RXBAS_SDBA_DECODE(mfdcr_any(SDRAM_R0BAS+bxcr_num)); |
| 2435 | if (base_addr >= CONFIG_MAX_MEM_MAPPED) |
| 2436 | continue; |
| 2437 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2438 | /*------------------------------------------------------------------ |
| 2439 | * Run the short memory test. |
| 2440 | *-----------------------------------------------------------------*/ |
Stefan Roese | 0203a97 | 2008-07-09 17:33:57 +0200 | [diff] [blame] | 2441 | membase = (u32 *)(u32)base_addr; |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2442 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2443 | for (i = 0; i < NUMMEMTESTS; i++) { |
| 2444 | for (j = 0; j < NUMMEMWORDS; j++) { |
| 2445 | membase[j] = test[i][j]; |
| 2446 | ppcDcbf((u32)&(membase[j])); |
| 2447 | } |
| 2448 | sync(); |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2449 | for (l=0; l<NUMLOOPS; l++) { |
| 2450 | for (j = 0; j < NUMMEMWORDS; j++) { |
| 2451 | if (membase[j] != test[i][j]) { |
| 2452 | ppcDcbf((u32)&(membase[j])); |
| 2453 | return 0; |
| 2454 | } |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2455 | ppcDcbf((u32)&(membase[j])); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2456 | } |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2457 | sync(); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2458 | } |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2459 | } |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2460 | } /* if bank enabled */ |
| 2461 | } /* for bxcf_num */ |
| 2462 | |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2463 | return 1; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2464 | } |
| 2465 | |
| 2466 | #ifndef HARD_CODED_DQS |
| 2467 | /*-----------------------------------------------------------------------------+ |
| 2468 | * DQS_calibration_process. |
| 2469 | *-----------------------------------------------------------------------------*/ |
| 2470 | static void DQS_calibration_process(void) |
| 2471 | { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2472 | unsigned long rfdc_reg; |
| 2473 | unsigned long rffd; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2474 | unsigned long val; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2475 | long rffd_average; |
| 2476 | long max_start; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2477 | unsigned long dlycal; |
| 2478 | unsigned long dly_val; |
| 2479 | unsigned long max_pass_length; |
| 2480 | unsigned long current_pass_length; |
| 2481 | unsigned long current_fail_length; |
| 2482 | unsigned long current_start; |
| 2483 | long max_end; |
| 2484 | unsigned char fail_found; |
| 2485 | unsigned char pass_found; |
Stefan Roese | e3060b0 | 2008-01-05 09:12:41 +0100 | [diff] [blame] | 2486 | #if !defined(CONFIG_DDR_RQDC_FIXED) |
Stefan Roese | 65a5712 | 2011-11-15 08:02:30 +0000 | [diff] [blame] | 2487 | int window_found; |
Stefan Roese | e3060b0 | 2008-01-05 09:12:41 +0100 | [diff] [blame] | 2488 | u32 rqdc_reg; |
| 2489 | u32 rqfd; |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2490 | u32 rqfd_start; |
Stefan Roese | e3060b0 | 2008-01-05 09:12:41 +0100 | [diff] [blame] | 2491 | u32 rqfd_average; |
| 2492 | int loopi = 0; |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2493 | char str[] = "Auto calibration -"; |
| 2494 | char slash[] = "\\|/-\\|/-"; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2495 | |
| 2496 | /*------------------------------------------------------------------ |
| 2497 | * Test to determine the best read clock delay tuning bits. |
| 2498 | * |
| 2499 | * Before the DDR controller can be used, the read clock delay needs to be |
| 2500 | * set. This is SDRAM_RQDC[RQFD] and SDRAM_RFDC[RFFD]. |
| 2501 | * This value cannot be hardcoded into the program because it changes |
| 2502 | * depending on the board's setup and environment. |
| 2503 | * To do this, all delay values are tested to see if they |
| 2504 | * work or not. By doing this, you get groups of fails with groups of |
| 2505 | * passing values. The idea is to find the start and end of a passing |
| 2506 | * window and take the center of it to use as the read clock delay. |
| 2507 | * |
| 2508 | * A failure has to be seen first so that when we hit a pass, we know |
| 2509 | * that it is truely the start of the window. If we get passing values |
| 2510 | * to start off with, we don't know if we are at the start of the window. |
| 2511 | * |
| 2512 | * The code assumes that a failure will always be found. |
| 2513 | * If a failure is not found, there is no easy way to get the middle |
| 2514 | * of the passing window. I guess we can pretty much pick any value |
| 2515 | * but some values will be better than others. Since the lowest speed |
| 2516 | * we can clock the DDR interface at is 200 MHz (2x 100 MHz PLB speed), |
| 2517 | * from experimentation it is safe to say you will always have a failure. |
| 2518 | *-----------------------------------------------------------------*/ |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2519 | |
| 2520 | /* first fix RQDC[RQFD] to an average of 80 degre phase shift to find RFDC[RFFD] */ |
| 2521 | rqfd_start = 64; /* test-only: don't know if this is the _best_ start value */ |
| 2522 | |
| 2523 | puts(str); |
| 2524 | |
| 2525 | calibration_loop: |
| 2526 | mfsdram(SDRAM_RQDC, rqdc_reg); |
| 2527 | mtsdram(SDRAM_RQDC, (rqdc_reg & ~SDRAM_RQDC_RQFD_MASK) | |
| 2528 | SDRAM_RQDC_RQFD_ENCODE(rqfd_start)); |
Stefan Roese | e3060b0 | 2008-01-05 09:12:41 +0100 | [diff] [blame] | 2529 | #else /* CONFIG_DDR_RQDC_FIXED */ |
| 2530 | /* |
| 2531 | * On Katmai the complete auto-calibration somehow doesn't seem to |
| 2532 | * produce the best results, meaning optimal values for RQFD/RFFD. |
| 2533 | * This was discovered by GDA using a high bandwidth scope, |
| 2534 | * analyzing the DDR2 signals. GDA provided a fixed value for RQFD, |
| 2535 | * so now on Katmai "only" RFFD is auto-calibrated. |
| 2536 | */ |
| 2537 | mtsdram(SDRAM_RQDC, CONFIG_DDR_RQDC_FIXED); |
| 2538 | #endif /* CONFIG_DDR_RQDC_FIXED */ |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2539 | |
| 2540 | max_start = 0; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2541 | |
| 2542 | max_pass_length = 0; |
| 2543 | max_start = 0; |
| 2544 | max_end = 0; |
| 2545 | current_pass_length = 0; |
| 2546 | current_fail_length = 0; |
| 2547 | current_start = 0; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2548 | fail_found = false; |
| 2549 | pass_found = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2550 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2551 | /* |
| 2552 | * get the delay line calibration register value |
| 2553 | */ |
| 2554 | mfsdram(SDRAM_DLCR, dlycal); |
| 2555 | dly_val = SDRAM_DLYCAL_DLCV_DECODE(dlycal) << 2; |
| 2556 | |
| 2557 | for (rffd = 0; rffd <= SDRAM_RFDC_RFFD_MAX; rffd++) { |
| 2558 | mfsdram(SDRAM_RFDC, rfdc_reg); |
| 2559 | rfdc_reg &= ~(SDRAM_RFDC_RFFD_MASK); |
| 2560 | |
| 2561 | /*------------------------------------------------------------------ |
| 2562 | * Set the timing reg for the test. |
| 2563 | *-----------------------------------------------------------------*/ |
| 2564 | mtsdram(SDRAM_RFDC, rfdc_reg | SDRAM_RFDC_RFFD_ENCODE(rffd)); |
| 2565 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2566 | /*------------------------------------------------------------------ |
| 2567 | * See if the rffd value passed. |
| 2568 | *-----------------------------------------------------------------*/ |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2569 | if (short_mem_test()) { |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2570 | if (fail_found == true) { |
| 2571 | pass_found = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2572 | if (current_pass_length == 0) |
| 2573 | current_start = rffd; |
| 2574 | |
| 2575 | current_fail_length = 0; |
| 2576 | current_pass_length++; |
| 2577 | |
| 2578 | if (current_pass_length > max_pass_length) { |
| 2579 | max_pass_length = current_pass_length; |
| 2580 | max_start = current_start; |
| 2581 | max_end = rffd; |
| 2582 | } |
| 2583 | } |
| 2584 | } else { |
| 2585 | current_pass_length = 0; |
| 2586 | current_fail_length++; |
| 2587 | |
| 2588 | if (current_fail_length >= (dly_val >> 2)) { |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2589 | if (fail_found == false) |
| 2590 | fail_found = true; |
| 2591 | else if (pass_found == true) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2592 | break; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2593 | } |
| 2594 | } |
| 2595 | } /* for rffd */ |
| 2596 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2597 | /*------------------------------------------------------------------ |
| 2598 | * Set the average RFFD value |
| 2599 | *-----------------------------------------------------------------*/ |
| 2600 | rffd_average = ((max_start + max_end) >> 1); |
| 2601 | |
| 2602 | if (rffd_average < 0) |
| 2603 | rffd_average = 0; |
| 2604 | |
| 2605 | if (rffd_average > SDRAM_RFDC_RFFD_MAX) |
| 2606 | rffd_average = SDRAM_RFDC_RFFD_MAX; |
| 2607 | /* now fix RFDC[RFFD] found and find RQDC[RQFD] */ |
| 2608 | mtsdram(SDRAM_RFDC, rfdc_reg | SDRAM_RFDC_RFFD_ENCODE(rffd_average)); |
| 2609 | |
Stefan Roese | e3060b0 | 2008-01-05 09:12:41 +0100 | [diff] [blame] | 2610 | #if !defined(CONFIG_DDR_RQDC_FIXED) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2611 | max_pass_length = 0; |
| 2612 | max_start = 0; |
| 2613 | max_end = 0; |
| 2614 | current_pass_length = 0; |
| 2615 | current_fail_length = 0; |
| 2616 | current_start = 0; |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2617 | window_found = false; |
| 2618 | fail_found = false; |
| 2619 | pass_found = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2620 | |
| 2621 | for (rqfd = 0; rqfd <= SDRAM_RQDC_RQFD_MAX; rqfd++) { |
| 2622 | mfsdram(SDRAM_RQDC, rqdc_reg); |
| 2623 | rqdc_reg &= ~(SDRAM_RQDC_RQFD_MASK); |
| 2624 | |
| 2625 | /*------------------------------------------------------------------ |
| 2626 | * Set the timing reg for the test. |
| 2627 | *-----------------------------------------------------------------*/ |
| 2628 | mtsdram(SDRAM_RQDC, rqdc_reg | SDRAM_RQDC_RQFD_ENCODE(rqfd)); |
| 2629 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2630 | /*------------------------------------------------------------------ |
| 2631 | * See if the rffd value passed. |
| 2632 | *-----------------------------------------------------------------*/ |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2633 | if (short_mem_test()) { |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2634 | if (fail_found == true) { |
| 2635 | pass_found = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2636 | if (current_pass_length == 0) |
| 2637 | current_start = rqfd; |
| 2638 | |
| 2639 | current_fail_length = 0; |
| 2640 | current_pass_length++; |
| 2641 | |
| 2642 | if (current_pass_length > max_pass_length) { |
| 2643 | max_pass_length = current_pass_length; |
| 2644 | max_start = current_start; |
| 2645 | max_end = rqfd; |
| 2646 | } |
| 2647 | } |
| 2648 | } else { |
| 2649 | current_pass_length = 0; |
| 2650 | current_fail_length++; |
| 2651 | |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2652 | if (fail_found == false) { |
| 2653 | fail_found = true; |
| 2654 | } else if (pass_found == true) { |
| 2655 | window_found = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2656 | break; |
| 2657 | } |
| 2658 | } |
| 2659 | } |
| 2660 | |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2661 | rqfd_average = ((max_start + max_end) >> 1); |
| 2662 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2663 | /*------------------------------------------------------------------ |
| 2664 | * Make sure we found the valid read passing window. Halt if not |
| 2665 | *-----------------------------------------------------------------*/ |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2666 | if (window_found == false) { |
Stefan Roese | f88e360 | 2007-03-31 08:46:08 +0200 | [diff] [blame] | 2667 | if (rqfd_start < SDRAM_RQDC_RQFD_MAX) { |
| 2668 | putc('\b'); |
| 2669 | putc(slash[loopi++ % 8]); |
| 2670 | |
| 2671 | /* try again from with a different RQFD start value */ |
| 2672 | rqfd_start++; |
| 2673 | goto calibration_loop; |
| 2674 | } |
| 2675 | |
| 2676 | printf("\nERROR: Cannot determine a common read delay for the " |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2677 | "DIMM(s) installed.\n"); |
| 2678 | debug("%s[%d] ERROR : \n", __FUNCTION__,__LINE__); |
Grant Erickson | 9416cd9 | 2008-07-09 16:46:35 -0700 | [diff] [blame] | 2679 | ppc4xx_ibm_ddr2_register_dump(); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 2680 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2681 | } |
| 2682 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2683 | if (rqfd_average < 0) |
| 2684 | rqfd_average = 0; |
| 2685 | |
| 2686 | if (rqfd_average > SDRAM_RQDC_RQFD_MAX) |
| 2687 | rqfd_average = SDRAM_RQDC_RQFD_MAX; |
| 2688 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2689 | mtsdram(SDRAM_RQDC, |
| 2690 | (rqdc_reg & ~SDRAM_RQDC_RQFD_MASK) | |
| 2691 | SDRAM_RQDC_RQFD_ENCODE(rqfd_average)); |
| 2692 | |
Stefan Roese | e3060b0 | 2008-01-05 09:12:41 +0100 | [diff] [blame] | 2693 | blank_string(strlen(str)); |
| 2694 | #endif /* CONFIG_DDR_RQDC_FIXED */ |
| 2695 | |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2696 | mfsdram(SDRAM_DLCR, val); |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 2697 | debug("%s[%d] DLCR: 0x%08lX\n", __FUNCTION__, __LINE__, val); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2698 | mfsdram(SDRAM_RQDC, val); |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 2699 | debug("%s[%d] RQDC: 0x%08lX\n", __FUNCTION__, __LINE__, val); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2700 | mfsdram(SDRAM_RFDC, val); |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 2701 | debug("%s[%d] RFDC: 0x%08lX\n", __FUNCTION__, __LINE__, val); |
Stefan Roese | e3060b0 | 2008-01-05 09:12:41 +0100 | [diff] [blame] | 2702 | mfsdram(SDRAM_RDCC, val); |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 2703 | debug("%s[%d] RDCC: 0x%08lX\n", __FUNCTION__, __LINE__, val); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2704 | } |
| 2705 | #else /* calibration test with hardvalues */ |
| 2706 | /*-----------------------------------------------------------------------------+ |
| 2707 | * DQS_calibration_process. |
| 2708 | *-----------------------------------------------------------------------------*/ |
| 2709 | static void test(void) |
| 2710 | { |
| 2711 | unsigned long dimm_num; |
| 2712 | unsigned long ecc_temp; |
| 2713 | unsigned long i, j; |
| 2714 | unsigned long *membase; |
| 2715 | unsigned long bxcf[MAXRANKS]; |
| 2716 | unsigned long val; |
| 2717 | char window_found; |
| 2718 | char begin_found[MAXDIMMS]; |
| 2719 | char end_found[MAXDIMMS]; |
| 2720 | char search_end[MAXDIMMS]; |
| 2721 | unsigned long test[NUMMEMTESTS][NUMMEMWORDS] = { |
| 2722 | {0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, |
| 2723 | 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF}, |
| 2724 | {0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000, |
| 2725 | 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000}, |
| 2726 | {0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555, |
| 2727 | 0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555}, |
| 2728 | {0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA, |
| 2729 | 0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA}, |
| 2730 | {0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A, |
| 2731 | 0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A}, |
| 2732 | {0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5, |
| 2733 | 0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5}, |
| 2734 | {0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA, |
| 2735 | 0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA}, |
| 2736 | {0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55, |
| 2737 | 0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55} }; |
| 2738 | |
| 2739 | /*------------------------------------------------------------------ |
| 2740 | * Test to determine the best read clock delay tuning bits. |
| 2741 | * |
| 2742 | * Before the DDR controller can be used, the read clock delay needs to be |
| 2743 | * set. This is SDRAM_RQDC[RQFD] and SDRAM_RFDC[RFFD]. |
| 2744 | * This value cannot be hardcoded into the program because it changes |
| 2745 | * depending on the board's setup and environment. |
| 2746 | * To do this, all delay values are tested to see if they |
| 2747 | * work or not. By doing this, you get groups of fails with groups of |
| 2748 | * passing values. The idea is to find the start and end of a passing |
| 2749 | * window and take the center of it to use as the read clock delay. |
| 2750 | * |
| 2751 | * A failure has to be seen first so that when we hit a pass, we know |
| 2752 | * that it is truely the start of the window. If we get passing values |
| 2753 | * to start off with, we don't know if we are at the start of the window. |
| 2754 | * |
| 2755 | * The code assumes that a failure will always be found. |
| 2756 | * If a failure is not found, there is no easy way to get the middle |
| 2757 | * of the passing window. I guess we can pretty much pick any value |
| 2758 | * but some values will be better than others. Since the lowest speed |
| 2759 | * we can clock the DDR interface at is 200 MHz (2x 100 MHz PLB speed), |
| 2760 | * from experimentation it is safe to say you will always have a failure. |
| 2761 | *-----------------------------------------------------------------*/ |
| 2762 | mfsdram(SDRAM_MCOPT1, ecc_temp); |
| 2763 | ecc_temp &= SDRAM_MCOPT1_MCHK_MASK; |
| 2764 | mfsdram(SDRAM_MCOPT1, val); |
| 2765 | mtsdram(SDRAM_MCOPT1, (val & ~SDRAM_MCOPT1_MCHK_MASK) | |
| 2766 | SDRAM_MCOPT1_MCHK_NON); |
| 2767 | |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2768 | window_found = false; |
| 2769 | begin_found[0] = false; |
| 2770 | end_found[0] = false; |
| 2771 | search_end[0] = false; |
| 2772 | begin_found[1] = false; |
| 2773 | end_found[1] = false; |
| 2774 | search_end[1] = false; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2775 | |
| 2776 | for (dimm_num = 0; dimm_num < MAXDIMMS; dimm_num++) { |
| 2777 | mfsdram(SDRAM_MB0CF + (bxcr_num << 2), bxcf[bxcr_num]); |
| 2778 | |
| 2779 | /* Banks enabled */ |
| 2780 | if ((bxcf[dimm_num] & SDRAM_BXCF_M_BE_MASK) == SDRAM_BXCF_M_BE_ENABLE) { |
| 2781 | |
| 2782 | /* Bank is enabled */ |
| 2783 | membase = |
| 2784 | (unsigned long*)(SDRAM_RXBAS_SDBA_DECODE(mfdcr_any(SDRAM_R0BAS+dimm_num))); |
| 2785 | |
| 2786 | /*------------------------------------------------------------------ |
| 2787 | * Run the short memory test. |
| 2788 | *-----------------------------------------------------------------*/ |
| 2789 | for (i = 0; i < NUMMEMTESTS; i++) { |
| 2790 | for (j = 0; j < NUMMEMWORDS; j++) { |
| 2791 | membase[j] = test[i][j]; |
| 2792 | ppcDcbf((u32)&(membase[j])); |
| 2793 | } |
| 2794 | sync(); |
| 2795 | for (j = 0; j < NUMMEMWORDS; j++) { |
| 2796 | if (membase[j] != test[i][j]) { |
| 2797 | ppcDcbf((u32)&(membase[j])); |
| 2798 | break; |
| 2799 | } |
| 2800 | ppcDcbf((u32)&(membase[j])); |
| 2801 | } |
| 2802 | sync(); |
| 2803 | if (j < NUMMEMWORDS) |
| 2804 | break; |
| 2805 | } |
| 2806 | |
| 2807 | /*------------------------------------------------------------------ |
| 2808 | * See if the rffd value passed. |
| 2809 | *-----------------------------------------------------------------*/ |
| 2810 | if (i < NUMMEMTESTS) { |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2811 | if ((end_found[dimm_num] == false) && |
| 2812 | (search_end[dimm_num] == true)) { |
| 2813 | end_found[dimm_num] = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2814 | } |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2815 | if ((end_found[0] == true) && |
| 2816 | (end_found[1] == true)) |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2817 | break; |
| 2818 | } else { |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2819 | if (begin_found[dimm_num] == false) { |
| 2820 | begin_found[dimm_num] = true; |
| 2821 | search_end[dimm_num] = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2822 | } |
| 2823 | } |
| 2824 | } else { |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2825 | begin_found[dimm_num] = true; |
| 2826 | end_found[dimm_num] = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2827 | } |
| 2828 | } |
| 2829 | |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2830 | if ((begin_found[0] == true) && (begin_found[1] == true)) |
| 2831 | window_found = true; |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2832 | |
| 2833 | /*------------------------------------------------------------------ |
| 2834 | * Make sure we found the valid read passing window. Halt if not |
| 2835 | *-----------------------------------------------------------------*/ |
York Sun | 4a59809 | 2013-04-01 11:29:11 -0700 | [diff] [blame] | 2836 | if (window_found == false) { |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2837 | printf("ERROR: Cannot determine a common read delay for the " |
| 2838 | "DIMM(s) installed.\n"); |
Heiko Schocher | 68310b0 | 2007-06-25 19:11:37 +0200 | [diff] [blame] | 2839 | spd_ddr_init_hang (); |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2840 | } |
| 2841 | |
| 2842 | /*------------------------------------------------------------------ |
| 2843 | * Restore the ECC variable to what it originally was |
| 2844 | *-----------------------------------------------------------------*/ |
| 2845 | mtsdram(SDRAM_MCOPT1, |
| 2846 | (ppcMfdcr_sdram(SDRAM_MCOPT1) & ~SDRAM_MCOPT1_MCHK_MASK) |
| 2847 | | ecc_temp); |
| 2848 | } |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 2849 | #endif /* !HARD_CODED_DQS */ |
| 2850 | #endif /* !defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION) */ |
Stefan Roese | 43f3247 | 2007-02-20 10:43:34 +0100 | [diff] [blame] | 2851 | |
Stefan Roese | 2001a33 | 2008-07-10 15:32:32 +0200 | [diff] [blame] | 2852 | #else /* CONFIG_SPD_EEPROM */ |
| 2853 | |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2854 | /*----------------------------------------------------------------------------- |
| 2855 | * Function: initdram |
Adam Graham | 446eb8d | 2008-10-08 10:13:14 -0700 | [diff] [blame] | 2856 | * Description: Configures the PPC4xx IBM DDR1/DDR2 SDRAM memory controller. |
| 2857 | * The configuration is performed using static, compile- |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2858 | * time parameters. |
Adam Graham | 446eb8d | 2008-10-08 10:13:14 -0700 | [diff] [blame] | 2859 | * Configures the PPC405EX(r) and PPC460EX/GT |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2860 | *---------------------------------------------------------------------------*/ |
Becky Bruce | bd99ae7 | 2008-06-09 16:03:40 -0500 | [diff] [blame] | 2861 | phys_size_t initdram(int board_type) |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2862 | { |
Stefan Roese | a226c85 | 2008-06-02 17:13:55 +0200 | [diff] [blame] | 2863 | /* |
| 2864 | * Only run this SDRAM init code once. For NAND booting |
| 2865 | * targets like Kilauea, we call initdram() early from the |
| 2866 | * 4k NAND booting image (CONFIG_NAND_SPL) from nand_boot(). |
| 2867 | * Later on the NAND U-Boot image runs (CONFIG_NAND_U_BOOT) |
| 2868 | * which calls initdram() again. This time the controller |
| 2869 | * mustn't be reconfigured again since we're already running |
| 2870 | * from SDRAM. |
| 2871 | */ |
| 2872 | #if !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL) |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2873 | unsigned long val; |
| 2874 | |
Adam Graham | 446eb8d | 2008-10-08 10:13:14 -0700 | [diff] [blame] | 2875 | #if defined(CONFIG_440) |
| 2876 | mtdcr(SDRAM_R0BAS, CONFIG_SYS_SDRAM_R0BAS); |
| 2877 | mtdcr(SDRAM_R1BAS, CONFIG_SYS_SDRAM_R1BAS); |
| 2878 | mtdcr(SDRAM_R2BAS, CONFIG_SYS_SDRAM_R2BAS); |
| 2879 | mtdcr(SDRAM_R3BAS, CONFIG_SYS_SDRAM_R3BAS); |
| 2880 | mtdcr(SDRAM_PLBADDULL, CONFIG_SYS_SDRAM_PLBADDULL); /* MQ0_BAUL */ |
| 2881 | mtdcr(SDRAM_PLBADDUHB, CONFIG_SYS_SDRAM_PLBADDUHB); /* MQ0_BAUH */ |
| 2882 | mtdcr(SDRAM_CONF1LL, CONFIG_SYS_SDRAM_CONF1LL); |
| 2883 | mtdcr(SDRAM_CONF1HB, CONFIG_SYS_SDRAM_CONF1HB); |
| 2884 | mtdcr(SDRAM_CONFPATHB, CONFIG_SYS_SDRAM_CONFPATHB); |
| 2885 | #endif |
| 2886 | |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2887 | /* Set Memory Bank Configuration Registers */ |
| 2888 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 2889 | mtsdram(SDRAM_MB0CF, CONFIG_SYS_SDRAM0_MB0CF); |
| 2890 | mtsdram(SDRAM_MB1CF, CONFIG_SYS_SDRAM0_MB1CF); |
| 2891 | mtsdram(SDRAM_MB2CF, CONFIG_SYS_SDRAM0_MB2CF); |
| 2892 | mtsdram(SDRAM_MB3CF, CONFIG_SYS_SDRAM0_MB3CF); |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2893 | |
| 2894 | /* Set Memory Clock Timing Register */ |
| 2895 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 2896 | mtsdram(SDRAM_CLKTR, CONFIG_SYS_SDRAM0_CLKTR); |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2897 | |
| 2898 | /* Set Refresh Time Register */ |
| 2899 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 2900 | mtsdram(SDRAM_RTR, CONFIG_SYS_SDRAM0_RTR); |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2901 | |
| 2902 | /* Set SDRAM Timing Registers */ |
| 2903 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 2904 | mtsdram(SDRAM_SDTR1, CONFIG_SYS_SDRAM0_SDTR1); |
| 2905 | mtsdram(SDRAM_SDTR2, CONFIG_SYS_SDRAM0_SDTR2); |
| 2906 | mtsdram(SDRAM_SDTR3, CONFIG_SYS_SDRAM0_SDTR3); |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2907 | |
| 2908 | /* Set Mode and Extended Mode Registers */ |
| 2909 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 2910 | mtsdram(SDRAM_MMODE, CONFIG_SYS_SDRAM0_MMODE); |
| 2911 | mtsdram(SDRAM_MEMODE, CONFIG_SYS_SDRAM0_MEMODE); |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2912 | |
| 2913 | /* Set Memory Controller Options 1 Register */ |
| 2914 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 2915 | mtsdram(SDRAM_MCOPT1, CONFIG_SYS_SDRAM0_MCOPT1); |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2916 | |
| 2917 | /* Set Manual Initialization Control Registers */ |
| 2918 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 2919 | mtsdram(SDRAM_INITPLR0, CONFIG_SYS_SDRAM0_INITPLR0); |
| 2920 | mtsdram(SDRAM_INITPLR1, CONFIG_SYS_SDRAM0_INITPLR1); |
| 2921 | mtsdram(SDRAM_INITPLR2, CONFIG_SYS_SDRAM0_INITPLR2); |
| 2922 | mtsdram(SDRAM_INITPLR3, CONFIG_SYS_SDRAM0_INITPLR3); |
| 2923 | mtsdram(SDRAM_INITPLR4, CONFIG_SYS_SDRAM0_INITPLR4); |
| 2924 | mtsdram(SDRAM_INITPLR5, CONFIG_SYS_SDRAM0_INITPLR5); |
| 2925 | mtsdram(SDRAM_INITPLR6, CONFIG_SYS_SDRAM0_INITPLR6); |
| 2926 | mtsdram(SDRAM_INITPLR7, CONFIG_SYS_SDRAM0_INITPLR7); |
| 2927 | mtsdram(SDRAM_INITPLR8, CONFIG_SYS_SDRAM0_INITPLR8); |
| 2928 | mtsdram(SDRAM_INITPLR9, CONFIG_SYS_SDRAM0_INITPLR9); |
| 2929 | mtsdram(SDRAM_INITPLR10, CONFIG_SYS_SDRAM0_INITPLR10); |
| 2930 | mtsdram(SDRAM_INITPLR11, CONFIG_SYS_SDRAM0_INITPLR11); |
| 2931 | mtsdram(SDRAM_INITPLR12, CONFIG_SYS_SDRAM0_INITPLR12); |
| 2932 | mtsdram(SDRAM_INITPLR13, CONFIG_SYS_SDRAM0_INITPLR13); |
| 2933 | mtsdram(SDRAM_INITPLR14, CONFIG_SYS_SDRAM0_INITPLR14); |
| 2934 | mtsdram(SDRAM_INITPLR15, CONFIG_SYS_SDRAM0_INITPLR15); |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2935 | |
| 2936 | /* Set On-Die Termination Registers */ |
| 2937 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 2938 | mtsdram(SDRAM_CODT, CONFIG_SYS_SDRAM0_CODT); |
| 2939 | mtsdram(SDRAM_MODT0, CONFIG_SYS_SDRAM0_MODT0); |
| 2940 | mtsdram(SDRAM_MODT1, CONFIG_SYS_SDRAM0_MODT1); |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2941 | |
| 2942 | /* Set Write Timing Register */ |
| 2943 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 2944 | mtsdram(SDRAM_WRDTR, CONFIG_SYS_SDRAM0_WRDTR); |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2945 | |
| 2946 | /* |
| 2947 | * Start Initialization by SDRAM0_MCOPT2[SREN] = 0 and |
| 2948 | * SDRAM0_MCOPT2[IPTR] = 1 |
| 2949 | */ |
| 2950 | |
| 2951 | mtsdram(SDRAM_MCOPT2, (SDRAM_MCOPT2_SREN_EXIT | |
| 2952 | SDRAM_MCOPT2_IPTR_EXECUTE)); |
| 2953 | |
| 2954 | /* |
| 2955 | * Poll SDRAM0_MCSTAT[MIC] for assertion to indicate the |
| 2956 | * completion of initialization. |
| 2957 | */ |
| 2958 | |
| 2959 | do { |
| 2960 | mfsdram(SDRAM_MCSTAT, val); |
| 2961 | } while ((val & SDRAM_MCSTAT_MIC_MASK) != SDRAM_MCSTAT_MIC_COMP); |
| 2962 | |
| 2963 | /* Set Delay Control Registers */ |
| 2964 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 2965 | mtsdram(SDRAM_DLCR, CONFIG_SYS_SDRAM0_DLCR); |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 2966 | |
| 2967 | #if !defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION) |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 2968 | mtsdram(SDRAM_RDCC, CONFIG_SYS_SDRAM0_RDCC); |
| 2969 | mtsdram(SDRAM_RQDC, CONFIG_SYS_SDRAM0_RQDC); |
| 2970 | mtsdram(SDRAM_RFDC, CONFIG_SYS_SDRAM0_RFDC); |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 2971 | #endif /* !CONFIG_PPC4xx_DDR_AUTOCALIBRATION */ |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 2972 | |
| 2973 | /* |
| 2974 | * Enable Controller by SDRAM0_MCOPT2[DCEN] = 1: |
| 2975 | */ |
| 2976 | |
| 2977 | mfsdram(SDRAM_MCOPT2, val); |
| 2978 | mtsdram(SDRAM_MCOPT2, val | SDRAM_MCOPT2_DCEN_ENABLE); |
| 2979 | |
Adam Graham | 446eb8d | 2008-10-08 10:13:14 -0700 | [diff] [blame] | 2980 | #if defined(CONFIG_440) |
| 2981 | /* |
| 2982 | * Program TLB entries with caches enabled, for best performace |
| 2983 | * while auto-calibrating and ECC generation |
| 2984 | */ |
| 2985 | program_tlb(0, 0, (CONFIG_SYS_MBYTES_SDRAM << 20), 0); |
| 2986 | #endif |
| 2987 | |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 2988 | #if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION) |
| 2989 | #if !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) |
| 2990 | /*------------------------------------------------------------------ |
| 2991 | | DQS calibration. |
| 2992 | +-----------------------------------------------------------------*/ |
| 2993 | DQS_autocalibration(); |
| 2994 | #endif /* !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) */ |
| 2995 | #endif /* CONFIG_PPC4xx_DDR_AUTOCALIBRATION */ |
| 2996 | |
Stefan Roese | c3bcfce | 2010-05-25 15:33:14 +0200 | [diff] [blame] | 2997 | /* |
| 2998 | * Now complete RDSS configuration as mentioned on page 7 of the AMCC |
| 2999 | * PowerPC440SP/SPe DDR2 application note: |
| 3000 | * "DDR1/DDR2 Initialization Sequence and Dynamic Tuning" |
| 3001 | */ |
| 3002 | update_rdcc(); |
| 3003 | |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 3004 | #if defined(CONFIG_DDR_ECC) |
Felix Radensky | 0e92536 | 2009-09-27 23:56:12 +0200 | [diff] [blame] | 3005 | do_program_ecc(0); |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 3006 | #endif /* defined(CONFIG_DDR_ECC) */ |
Grant Erickson | 9416cd9 | 2008-07-09 16:46:35 -0700 | [diff] [blame] | 3007 | |
Adam Graham | 446eb8d | 2008-10-08 10:13:14 -0700 | [diff] [blame] | 3008 | #if defined(CONFIG_440) |
| 3009 | /* |
| 3010 | * Now after initialization (auto-calibration and ECC generation) |
| 3011 | * remove the TLB entries with caches enabled and program again with |
| 3012 | * desired cache functionality |
| 3013 | */ |
| 3014 | remove_tlb(0, (CONFIG_SYS_MBYTES_SDRAM << 20)); |
| 3015 | program_tlb(0, 0, (CONFIG_SYS_MBYTES_SDRAM << 20), MY_TLB_WORD2_I_ENABLE); |
| 3016 | #endif |
| 3017 | |
Grant Erickson | 9416cd9 | 2008-07-09 16:46:35 -0700 | [diff] [blame] | 3018 | ppc4xx_ibm_ddr2_register_dump(); |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 3019 | |
| 3020 | #if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION) |
| 3021 | /* |
| 3022 | * Clear potential errors resulting from auto-calibration. |
| 3023 | * If not done, then we could get an interrupt later on when |
| 3024 | * exceptions are enabled. |
| 3025 | */ |
| 3026 | set_mcsr(get_mcsr()); |
| 3027 | #endif /* CONFIG_PPC4xx_DDR_AUTOCALIBRATION */ |
| 3028 | |
Stefan Roese | a226c85 | 2008-06-02 17:13:55 +0200 | [diff] [blame] | 3029 | #endif /* !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL) */ |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 3030 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 3031 | return (CONFIG_SYS_MBYTES_SDRAM << 20); |
Grant Erickson | b693341 | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 3032 | } |
Stefan Roese | 2001a33 | 2008-07-10 15:32:32 +0200 | [diff] [blame] | 3033 | #endif /* CONFIG_SPD_EEPROM */ |
Grant Erickson | 9416cd9 | 2008-07-09 16:46:35 -0700 | [diff] [blame] | 3034 | |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 3035 | #if !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) |
| 3036 | #if defined(CONFIG_440) |
| 3037 | u32 mfdcr_any(u32 dcr) |
| 3038 | { |
| 3039 | u32 val; |
| 3040 | |
| 3041 | switch (dcr) { |
| 3042 | case SDRAM_R0BAS + 0: |
| 3043 | val = mfdcr(SDRAM_R0BAS + 0); |
| 3044 | break; |
| 3045 | case SDRAM_R0BAS + 1: |
| 3046 | val = mfdcr(SDRAM_R0BAS + 1); |
| 3047 | break; |
| 3048 | case SDRAM_R0BAS + 2: |
| 3049 | val = mfdcr(SDRAM_R0BAS + 2); |
| 3050 | break; |
| 3051 | case SDRAM_R0BAS + 3: |
| 3052 | val = mfdcr(SDRAM_R0BAS + 3); |
| 3053 | break; |
| 3054 | default: |
| 3055 | printf("DCR %d not defined in case statement!!!\n", dcr); |
| 3056 | val = 0; /* just to satisfy the compiler */ |
| 3057 | } |
| 3058 | |
| 3059 | return val; |
| 3060 | } |
| 3061 | |
| 3062 | void mtdcr_any(u32 dcr, u32 val) |
| 3063 | { |
| 3064 | switch (dcr) { |
| 3065 | case SDRAM_R0BAS + 0: |
| 3066 | mtdcr(SDRAM_R0BAS + 0, val); |
| 3067 | break; |
| 3068 | case SDRAM_R0BAS + 1: |
| 3069 | mtdcr(SDRAM_R0BAS + 1, val); |
| 3070 | break; |
| 3071 | case SDRAM_R0BAS + 2: |
| 3072 | mtdcr(SDRAM_R0BAS + 2, val); |
| 3073 | break; |
| 3074 | case SDRAM_R0BAS + 3: |
| 3075 | mtdcr(SDRAM_R0BAS + 3, val); |
| 3076 | break; |
| 3077 | default: |
| 3078 | printf("DCR %d not defined in case statement!!!\n", dcr); |
| 3079 | } |
| 3080 | } |
| 3081 | #endif /* defined(CONFIG_440) */ |
Adam Graham | 97a5581 | 2008-09-03 12:26:59 -0700 | [diff] [blame] | 3082 | #endif /* !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) */ |
| 3083 | |
| 3084 | inline void ppc4xx_ibm_ddr2_register_dump(void) |
Grant Erickson | 9416cd9 | 2008-07-09 16:46:35 -0700 | [diff] [blame] | 3085 | { |
Stefan Roese | 2001a33 | 2008-07-10 15:32:32 +0200 | [diff] [blame] | 3086 | #if defined(DEBUG) |
Grant Erickson | 9416cd9 | 2008-07-09 16:46:35 -0700 | [diff] [blame] | 3087 | printf("\nPPC4xx IBM DDR2 Register Dump:\n"); |
| 3088 | |
| 3089 | #if (defined(CONFIG_440SP) || defined(CONFIG_440SPE) || \ |
| 3090 | defined(CONFIG_460EX) || defined(CONFIG_460GT)) |
Felix Radensky | 8d4d4a6 | 2009-07-01 11:37:46 +0300 | [diff] [blame] | 3091 | PPC4xx_IBM_DDR2_DUMP_MQ_REGISTER(R0BAS); |
| 3092 | PPC4xx_IBM_DDR2_DUMP_MQ_REGISTER(R1BAS); |
| 3093 | PPC4xx_IBM_DDR2_DUMP_MQ_REGISTER(R2BAS); |
| 3094 | PPC4xx_IBM_DDR2_DUMP_MQ_REGISTER(R3BAS); |
Grant Erickson | 9416cd9 | 2008-07-09 16:46:35 -0700 | [diff] [blame] | 3095 | #endif /* (defined(CONFIG_440SP) || ... */ |
| 3096 | #if defined(CONFIG_405EX) |
| 3097 | PPC4xx_IBM_DDR2_DUMP_REGISTER(BESR); |
| 3098 | PPC4xx_IBM_DDR2_DUMP_REGISTER(BEARL); |
| 3099 | PPC4xx_IBM_DDR2_DUMP_REGISTER(BEARH); |
| 3100 | PPC4xx_IBM_DDR2_DUMP_REGISTER(WMIRQ); |
| 3101 | PPC4xx_IBM_DDR2_DUMP_REGISTER(PLBOPT); |
| 3102 | PPC4xx_IBM_DDR2_DUMP_REGISTER(PUABA); |
| 3103 | #endif /* defined(CONFIG_405EX) */ |
| 3104 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MB0CF); |
| 3105 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MB1CF); |
| 3106 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MB2CF); |
| 3107 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MB3CF); |
| 3108 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MCSTAT); |
| 3109 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MCOPT1); |
| 3110 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MCOPT2); |
| 3111 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MODT0); |
| 3112 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MODT1); |
| 3113 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MODT2); |
| 3114 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MODT3); |
| 3115 | PPC4xx_IBM_DDR2_DUMP_REGISTER(CODT); |
| 3116 | #if (defined(CONFIG_440SP) || defined(CONFIG_440SPE) || \ |
| 3117 | defined(CONFIG_460EX) || defined(CONFIG_460GT)) |
| 3118 | PPC4xx_IBM_DDR2_DUMP_REGISTER(VVPR); |
| 3119 | PPC4xx_IBM_DDR2_DUMP_REGISTER(OPARS); |
| 3120 | /* |
| 3121 | * OPART is only used as a trigger register. |
| 3122 | * |
| 3123 | * No data is contained in this register, and reading or writing |
| 3124 | * to is can cause bad things to happen (hangs). Just skip it and |
| 3125 | * report "N/A". |
| 3126 | */ |
| 3127 | printf("%20s = N/A\n", "SDRAM_OPART"); |
| 3128 | #endif /* defined(CONFIG_440SP) || ... */ |
| 3129 | PPC4xx_IBM_DDR2_DUMP_REGISTER(RTR); |
| 3130 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR0); |
| 3131 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR1); |
| 3132 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR2); |
| 3133 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR3); |
| 3134 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR4); |
| 3135 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR5); |
| 3136 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR6); |
| 3137 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR7); |
| 3138 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR8); |
| 3139 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR9); |
| 3140 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR10); |
| 3141 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR11); |
| 3142 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR12); |
| 3143 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR13); |
| 3144 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR14); |
| 3145 | PPC4xx_IBM_DDR2_DUMP_REGISTER(INITPLR15); |
| 3146 | PPC4xx_IBM_DDR2_DUMP_REGISTER(RQDC); |
| 3147 | PPC4xx_IBM_DDR2_DUMP_REGISTER(RFDC); |
| 3148 | PPC4xx_IBM_DDR2_DUMP_REGISTER(RDCC); |
| 3149 | PPC4xx_IBM_DDR2_DUMP_REGISTER(DLCR); |
| 3150 | PPC4xx_IBM_DDR2_DUMP_REGISTER(CLKTR); |
| 3151 | PPC4xx_IBM_DDR2_DUMP_REGISTER(WRDTR); |
| 3152 | PPC4xx_IBM_DDR2_DUMP_REGISTER(SDTR1); |
| 3153 | PPC4xx_IBM_DDR2_DUMP_REGISTER(SDTR2); |
| 3154 | PPC4xx_IBM_DDR2_DUMP_REGISTER(SDTR3); |
| 3155 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MMODE); |
| 3156 | PPC4xx_IBM_DDR2_DUMP_REGISTER(MEMODE); |
Stefan Roese | 3774888 | 2009-11-03 14:34:45 +0100 | [diff] [blame] | 3157 | PPC4xx_IBM_DDR2_DUMP_REGISTER(ECCES); |
Grant Erickson | 9416cd9 | 2008-07-09 16:46:35 -0700 | [diff] [blame] | 3158 | #if (defined(CONFIG_440SP) || defined(CONFIG_440SPE) || \ |
| 3159 | defined(CONFIG_460EX) || defined(CONFIG_460GT)) |
| 3160 | PPC4xx_IBM_DDR2_DUMP_REGISTER(CID); |
| 3161 | #endif /* defined(CONFIG_440SP) || ... */ |
| 3162 | PPC4xx_IBM_DDR2_DUMP_REGISTER(RID); |
| 3163 | PPC4xx_IBM_DDR2_DUMP_REGISTER(FCSR); |
| 3164 | PPC4xx_IBM_DDR2_DUMP_REGISTER(RTSR); |
Stefan Roese | 2001a33 | 2008-07-10 15:32:32 +0200 | [diff] [blame] | 3165 | #endif /* defined(DEBUG) */ |
| 3166 | } |