Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 1 | /* |
Wolfgang Denk | f729075 | 2006-06-10 22:00:40 +0200 | [diff] [blame] | 2 | * (C) Copyright 2005 |
Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 3 | * BuS Elektronik GmbH & Co.KG <esw@bus-elektonik.de> |
Wolfgang Denk | f729075 | 2006-06-10 22:00:40 +0200 | [diff] [blame] | 4 | * |
Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 5 | * Based On |
| 6 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 7 | * |
| 8 | * See file CREDITS for list of people who contributed to this |
| 9 | * project. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU General Public License as |
| 13 | * published by the Free Software Foundation; either version 2 of |
| 14 | * the License, or (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 24 | * MA 02111-1307 USA |
| 25 | */ |
| 26 | |
| 27 | #include <common.h> |
| 28 | #include "cfm_flash.h" |
| 29 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 30 | #define PHYS_FLASH_1 CONFIG_SYS_FLASH_BASE |
Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 31 | #define FLASH_BANK_SIZE 0x200000 |
| 32 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 33 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; |
Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 34 | |
| 35 | void flash_print_info (flash_info_t * info) |
| 36 | { |
| 37 | int i; |
| 38 | |
| 39 | switch (info->flash_id & FLASH_VENDMASK) { |
| 40 | case (AMD_MANUFACT & FLASH_VENDMASK): |
| 41 | printf ("AMD: "); |
| 42 | switch (info->flash_id & FLASH_TYPEMASK) { |
| 43 | case (AMD_ID_LV160B & FLASH_TYPEMASK): |
| 44 | printf ("AM29LV160B (16Bit)\n"); |
| 45 | break; |
| 46 | default: |
| 47 | printf ("Unknown Chip Type\n"); |
| 48 | break; |
| 49 | } |
| 50 | break; |
| 51 | case FREESCALE_MANUFACT & FLASH_VENDMASK: |
| 52 | cfm_flash_print_info (info); |
| 53 | break; |
| 54 | default: |
| 55 | printf ("Unknown Vendor "); |
| 56 | break; |
| 57 | } |
| 58 | |
| 59 | puts (" Size: "); |
| 60 | if ((info->size >> 20) > 0) |
| 61 | { |
| 62 | printf ("%ld MiB",info->size >> 20); |
| 63 | } |
| 64 | else |
| 65 | { |
| 66 | printf ("%ld KiB",info->size >> 10); |
| 67 | } |
| 68 | printf (" in %d Sectors\n", info->sector_count); |
| 69 | |
| 70 | printf (" Sector Start Addresses:"); |
| 71 | for (i = 0; i < info->sector_count; i++) { |
| 72 | if ((i % 4) == 0) { |
| 73 | printf ("\n "); |
| 74 | } |
| 75 | printf ("%02d: %08lX%s ", i,info->start[i], |
| 76 | info->protect[i] ? " P" : " "); |
| 77 | } |
| 78 | printf ("\n\n"); |
| 79 | } |
| 80 | |
| 81 | unsigned long flash_init (void) |
| 82 | { |
| 83 | int i, j; |
| 84 | ulong size = 0; |
| 85 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 86 | for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { |
Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 87 | ulong flashbase = 0; |
| 88 | |
| 89 | switch (i) |
| 90 | { |
| 91 | case 1: |
| 92 | flash_info[i].flash_id = |
| 93 | (AMD_MANUFACT & FLASH_VENDMASK) | |
| 94 | (AMD_ID_LV160B & FLASH_TYPEMASK); |
| 95 | flash_info[i].size = FLASH_BANK_SIZE; |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 96 | flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT; |
| 97 | memset (flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT); |
Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 98 | flashbase = PHYS_FLASH_1; |
| 99 | for (j = 0; j < flash_info[i].sector_count; j++) { |
| 100 | if (j == 0) { |
| 101 | /* 1st is 16 KiB */ |
| 102 | flash_info[i].start[j] = flashbase; |
| 103 | } |
| 104 | if ((j >= 1) && (j <= 2)) { |
| 105 | /* 2nd and 3rd are 8 KiB */ |
| 106 | flash_info[i].start[j] = |
| 107 | flashbase + 0x4000 + 0x2000 * (j - 1); |
| 108 | } |
| 109 | if (j == 3) { |
| 110 | /* 4th is 32 KiB */ |
| 111 | flash_info[i].start[j] = flashbase + 0x8000; |
| 112 | } |
| 113 | if ((j >= 4) && (j <= 34)) { |
| 114 | /* rest is 256 KiB */ |
| 115 | flash_info[i].start[j] = |
| 116 | flashbase + 0x10000 + 0x10000 * (j - 4); |
| 117 | } |
| 118 | } |
| 119 | break; |
| 120 | case 0: |
| 121 | cfm_flash_init (&flash_info[i]); |
| 122 | break; |
| 123 | default: |
| 124 | panic ("configured to many flash banks!\n"); |
| 125 | } |
| 126 | |
| 127 | size += flash_info[i].size; |
| 128 | } |
| 129 | |
| 130 | flash_protect (FLAG_PROTECT_SET, |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 131 | CONFIG_SYS_FLASH_BASE, |
| 132 | CONFIG_SYS_FLASH_BASE + 0xffff, &flash_info[0]); |
Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 133 | |
| 134 | return size; |
| 135 | } |
| 136 | |
| 137 | #define CMD_READ_ARRAY 0x00F0 |
| 138 | #define CMD_UNLOCK1 0x00AA |
| 139 | #define CMD_UNLOCK2 0x0055 |
| 140 | #define CMD_ERASE_SETUP 0x0080 |
| 141 | #define CMD_ERASE_CONFIRM 0x0030 |
| 142 | #define CMD_PROGRAM 0x00A0 |
| 143 | #define CMD_UNLOCK_BYPASS 0x0020 |
| 144 | |
| 145 | #define MEM_FLASH_ADDR1 (*(volatile u16 *)(info->start[0] + (0x00000555<<1))) |
| 146 | #define MEM_FLASH_ADDR2 (*(volatile u16 *)(info->start[0] + (0x000002AA<<1))) |
| 147 | |
| 148 | |
| 149 | #define BIT_ERASE_DONE 0x0080 |
| 150 | #define BIT_RDY_MASK 0x0080 |
| 151 | #define BIT_PROGRAM_ERROR 0x0020 |
| 152 | #define BIT_TIMEOUT 0x80000000 /* our flag */ |
| 153 | |
| 154 | #define ERR_READY -1 |
| 155 | |
| 156 | int amd_flash_erase_sector(flash_info_t * info, int sector) |
| 157 | { |
| 158 | int state; |
| 159 | ulong result; |
| 160 | |
| 161 | volatile u16 *addr = |
| 162 | (volatile u16 *) (info->start[sector]); |
| 163 | |
| 164 | MEM_FLASH_ADDR1 = CMD_UNLOCK1; |
| 165 | MEM_FLASH_ADDR2 = CMD_UNLOCK2; |
| 166 | MEM_FLASH_ADDR1 = CMD_ERASE_SETUP; |
| 167 | |
| 168 | MEM_FLASH_ADDR1 = CMD_UNLOCK1; |
| 169 | MEM_FLASH_ADDR2 = CMD_UNLOCK2; |
| 170 | *addr = CMD_ERASE_CONFIRM; |
| 171 | |
| 172 | /* wait until flash is ready */ |
| 173 | state = 0; |
| 174 | set_timer (0); |
| 175 | |
| 176 | do { |
| 177 | result = *addr; |
| 178 | |
| 179 | /* check timeout */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 180 | if (get_timer (0) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 181 | MEM_FLASH_ADDR1 = CMD_READ_ARRAY; |
| 182 | state = ERR_TIMOUT; |
| 183 | } |
| 184 | |
| 185 | if (!state && (result & 0xFFFF) & BIT_ERASE_DONE) |
| 186 | state = ERR_READY; |
| 187 | } |
| 188 | while (!state); |
| 189 | if (state == ERR_READY) |
| 190 | state = ERR_OK; |
| 191 | |
| 192 | MEM_FLASH_ADDR1 = CMD_READ_ARRAY; |
| 193 | |
| 194 | return state; |
| 195 | } |
| 196 | |
| 197 | int flash_erase (flash_info_t * info, int s_first, int s_last) |
| 198 | { |
| 199 | int iflag, cflag; |
| 200 | int sector; |
| 201 | int rc; |
| 202 | |
| 203 | rc = ERR_OK; |
| 204 | |
| 205 | if (info->flash_id == FLASH_UNKNOWN) |
| 206 | { |
| 207 | rc = ERR_UNKNOWN_FLASH_TYPE; |
| 208 | } /* (info->flash_id == FLASH_UNKNOWN) */ |
| 209 | |
| 210 | if ((s_first < 0) || (s_first > s_last) || s_last >= info->sector_count) |
| 211 | { |
| 212 | rc = ERR_INVAL; |
| 213 | } |
| 214 | |
| 215 | cflag = icache_status (); |
| 216 | icache_disable (); |
| 217 | iflag = disable_interrupts (); |
| 218 | |
| 219 | for (sector = s_first; (sector <= s_last) && (rc == ERR_OK); sector++) { |
| 220 | |
| 221 | if (info->protect[sector]) |
| 222 | { |
| 223 | putc('P'); /* protected sector will not erase */ |
| 224 | } |
| 225 | else |
| 226 | { |
| 227 | /* erase on unprotected sector */ |
| 228 | puts("E\b"); |
| 229 | switch (info->flash_id & FLASH_VENDMASK) |
| 230 | { |
| 231 | case (AMD_MANUFACT & FLASH_VENDMASK): |
| 232 | rc = amd_flash_erase_sector(info,sector); |
| 233 | break; |
| 234 | case (FREESCALE_MANUFACT & FLASH_VENDMASK): |
| 235 | rc = cfm_flash_erase_sector(info,sector); |
| 236 | break; |
| 237 | default: |
| 238 | return ERR_UNKNOWN_FLASH_VENDOR; |
| 239 | } |
| 240 | putc('.'); |
| 241 | } |
| 242 | } |
| 243 | if (rc!=ERR_OK) |
| 244 | { |
| 245 | printf ("\n "); |
| 246 | flash_perror (rc); |
| 247 | } |
| 248 | else |
| 249 | { |
| 250 | printf (" done\n"); |
| 251 | } |
| 252 | |
| 253 | udelay (10000); /* allow flash to settle - wait 10 ms */ |
| 254 | |
| 255 | if (iflag) |
| 256 | enable_interrupts (); |
| 257 | |
| 258 | if (cflag) |
Wolfgang Denk | 87b3d4b | 2006-11-30 18:02:20 +0100 | [diff] [blame] | 259 | icache_enable (); |
Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 260 | |
| 261 | return rc; |
| 262 | } |
| 263 | |
| 264 | volatile static int amd_write_word (flash_info_t * info, ulong dest, u16 data) |
| 265 | { |
| 266 | volatile u16 *addr; |
| 267 | ulong result; |
| 268 | int cflag, iflag; |
| 269 | int state; |
| 270 | |
| 271 | /* |
| 272 | * Check if Flash is (sufficiently) erased |
| 273 | */ |
| 274 | addr = (volatile u16 *) dest; |
| 275 | |
| 276 | result = *addr; |
| 277 | if ((result & data) != data) |
| 278 | return ERR_NOT_ERASED; |
| 279 | |
| 280 | /* |
| 281 | * Disable interrupts which might cause a timeout |
| 282 | * here. Remember that our exception vectors are |
| 283 | * at address 0 in the flash, and we don't want a |
| 284 | * (ticker) exception to happen while the flash |
| 285 | * chip is in programming mode. |
| 286 | */ |
| 287 | |
| 288 | cflag = icache_status (); |
| 289 | icache_disable (); |
| 290 | iflag = disable_interrupts (); |
| 291 | |
| 292 | MEM_FLASH_ADDR1 = CMD_UNLOCK1; |
| 293 | MEM_FLASH_ADDR2 = CMD_UNLOCK2; |
| 294 | MEM_FLASH_ADDR1 = CMD_PROGRAM; |
| 295 | *addr = data; |
| 296 | |
| 297 | /* arm simple, non interrupt dependent timer */ |
| 298 | set_timer (0); |
| 299 | |
| 300 | /* wait until flash is ready */ |
| 301 | state = 0; |
| 302 | do { |
| 303 | result = *addr; |
| 304 | |
| 305 | /* check timeout */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 306 | if (get_timer (0) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 307 | state = ERR_TIMOUT; |
| 308 | } |
| 309 | if (!state && ((result & BIT_RDY_MASK) == (data & BIT_RDY_MASK))) |
| 310 | state = ERR_READY; |
| 311 | |
| 312 | } while (!state); |
| 313 | |
| 314 | *addr = CMD_READ_ARRAY; |
| 315 | |
| 316 | if (state == ERR_READY) |
| 317 | state = ERR_OK; |
| 318 | if ((*addr != data) && (state != ERR_TIMOUT)) |
| 319 | state = ERR_PROG_ERROR; |
| 320 | |
| 321 | if (iflag) |
| 322 | enable_interrupts (); |
| 323 | |
| 324 | if (cflag) |
| 325 | icache_enable (); |
| 326 | |
| 327 | return state; |
| 328 | } |
| 329 | |
| 330 | int amd_flash_write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) |
| 331 | { |
| 332 | int rc; |
| 333 | ulong dest; |
| 334 | u16 data; |
| 335 | |
| 336 | rc = ERR_OK; |
| 337 | if (addr & 1) |
| 338 | { |
| 339 | debug ("Byte alignment not supported\n"); |
| 340 | rc = ERR_ALIGN; |
| 341 | } |
| 342 | if (cnt & 1) |
| 343 | { |
| 344 | debug ("Byte transfer not supported\n"); |
| 345 | rc = ERR_ALIGN; |
| 346 | } |
| 347 | |
| 348 | dest = addr; |
| 349 | while ((cnt>=2) && (rc == ERR_OK)) |
| 350 | { |
Wolfgang Denk | dc770c7 | 2008-07-14 15:19:07 +0200 | [diff] [blame] | 351 | data = *((volatile u16 *) src); |
Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 352 | rc=amd_write_word (info,dest,data); |
| 353 | src +=2; |
| 354 | dest +=2; |
| 355 | cnt -=2; |
| 356 | } |
| 357 | return rc; |
| 358 | } |
| 359 | |
| 360 | int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) |
| 361 | { |
| 362 | int rc; |
| 363 | |
| 364 | switch (info->flash_id & FLASH_VENDMASK) |
| 365 | { |
| 366 | case (AMD_MANUFACT & FLASH_VENDMASK): |
| 367 | rc = amd_flash_write_buff(info,src,addr,cnt); |
| 368 | break; |
| 369 | case (FREESCALE_MANUFACT & FLASH_VENDMASK): |
| 370 | rc = cfm_flash_write_buff(info,src,addr,cnt); |
| 371 | break; |
| 372 | default: |
| 373 | rc = ERR_UNKNOWN_FLASH_VENDOR; |
| 374 | } |
| 375 | return rc; |
| 376 | |
| 377 | } |
| 378 | int amd_flash_protect(flash_info_t * info,long sector,int prot) |
| 379 | { |
| 380 | int rc; |
| 381 | rc= ERR_OK; |
| 382 | if (prot) |
| 383 | { |
| 384 | info->protect[sector]=1; |
| 385 | } |
| 386 | else |
| 387 | { |
| 388 | info->protect[sector]=0; |
| 389 | } |
| 390 | return rc; |
| 391 | } |
| 392 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 393 | #ifdef CONFIG_SYS_FLASH_PROTECTION |
Heiko Schocher | ac1956e | 2006-04-20 08:42:42 +0200 | [diff] [blame] | 394 | |
| 395 | int flash_real_protect(flash_info_t * info,long sector,int prot) |
| 396 | { |
| 397 | int rc; |
| 398 | |
| 399 | switch (info->flash_id & FLASH_VENDMASK) |
| 400 | { |
| 401 | case (AMD_MANUFACT & FLASH_VENDMASK): |
| 402 | rc = amd_flash_protect(info,sector,prot); |
| 403 | break; |
| 404 | case (FREESCALE_MANUFACT & FLASH_VENDMASK): |
| 405 | rc = cfm_flash_protect(info,sector,prot); |
| 406 | break; |
| 407 | default: |
| 408 | rc = ERR_UNKNOWN_FLASH_VENDOR; |
| 409 | } |
| 410 | return rc; |
| 411 | } |
| 412 | |
| 413 | #endif |