Nikita Kiryanov | f5cab0f | 2014-09-07 18:59:29 +0300 | [diff] [blame] | 1 | /* |
| 2 | * SPL specific code for Compulab CM-FX6 board |
| 3 | * |
| 4 | * Copyright (C) 2014, Compulab Ltd - http://compulab.co.il/ |
| 5 | * |
| 6 | * Author: Nikita Kiryanov <nikita@compulab.co.il> |
| 7 | * |
| 8 | * SPDX-License-Identifier: GPL-2.0+ |
| 9 | */ |
| 10 | |
| 11 | #include <common.h> |
| 12 | #include <spl.h> |
| 13 | #include <asm/io.h> |
| 14 | #include <asm/gpio.h> |
| 15 | #include <asm/arch/mx6-ddr.h> |
| 16 | #include <asm/arch/clock.h> |
| 17 | #include <asm/arch/sys_proto.h> |
Nikita Kiryanov | 59d0609 | 2014-08-20 15:09:01 +0300 | [diff] [blame] | 18 | #include <asm/arch/crm_regs.h> |
Nikita Kiryanov | f5cab0f | 2014-09-07 18:59:29 +0300 | [diff] [blame] | 19 | #include <asm/imx-common/iomux-v3.h> |
| 20 | #include <fsl_esdhc.h> |
| 21 | #include "common.h" |
| 22 | |
| 23 | DECLARE_GLOBAL_DATA_PTR; |
| 24 | |
| 25 | enum ddr_config { |
| 26 | DDR_16BIT_256MB, |
| 27 | DDR_32BIT_512MB, |
| 28 | DDR_32BIT_1GB, |
| 29 | DDR_64BIT_1GB, |
| 30 | DDR_64BIT_2GB, |
| 31 | DDR_64BIT_4GB, |
| 32 | DDR_UNKNOWN, |
| 33 | }; |
| 34 | |
| 35 | /* |
| 36 | * Below DRAM_RESET[DDR_SEL] = 0 which is incorrect according to |
| 37 | * Freescale QRM, but this is exactly the value used by the automatic |
| 38 | * calibration script and it works also in all our tests, so we leave |
| 39 | * it as is at this point. |
| 40 | */ |
| 41 | #define CM_FX6_DDR_IOMUX_CFG \ |
| 42 | .dram_sdqs0 = 0x00000038, \ |
| 43 | .dram_sdqs1 = 0x00000038, \ |
| 44 | .dram_sdqs2 = 0x00000038, \ |
| 45 | .dram_sdqs3 = 0x00000038, \ |
| 46 | .dram_sdqs4 = 0x00000038, \ |
| 47 | .dram_sdqs5 = 0x00000038, \ |
| 48 | .dram_sdqs6 = 0x00000038, \ |
| 49 | .dram_sdqs7 = 0x00000038, \ |
| 50 | .dram_dqm0 = 0x00000038, \ |
| 51 | .dram_dqm1 = 0x00000038, \ |
| 52 | .dram_dqm2 = 0x00000038, \ |
| 53 | .dram_dqm3 = 0x00000038, \ |
| 54 | .dram_dqm4 = 0x00000038, \ |
| 55 | .dram_dqm5 = 0x00000038, \ |
| 56 | .dram_dqm6 = 0x00000038, \ |
| 57 | .dram_dqm7 = 0x00000038, \ |
| 58 | .dram_cas = 0x00000038, \ |
| 59 | .dram_ras = 0x00000038, \ |
| 60 | .dram_sdclk_0 = 0x00000038, \ |
| 61 | .dram_sdclk_1 = 0x00000038, \ |
| 62 | .dram_sdcke0 = 0x00003000, \ |
| 63 | .dram_sdcke1 = 0x00003000, \ |
| 64 | .dram_reset = 0x00000038, \ |
| 65 | .dram_sdba2 = 0x00000000, \ |
| 66 | .dram_sdodt0 = 0x00000038, \ |
| 67 | .dram_sdodt1 = 0x00000038, |
| 68 | |
| 69 | #define CM_FX6_GPR_IOMUX_CFG \ |
| 70 | .grp_b0ds = 0x00000038, \ |
| 71 | .grp_b1ds = 0x00000038, \ |
| 72 | .grp_b2ds = 0x00000038, \ |
| 73 | .grp_b3ds = 0x00000038, \ |
| 74 | .grp_b4ds = 0x00000038, \ |
| 75 | .grp_b5ds = 0x00000038, \ |
| 76 | .grp_b6ds = 0x00000038, \ |
| 77 | .grp_b7ds = 0x00000038, \ |
| 78 | .grp_addds = 0x00000038, \ |
| 79 | .grp_ddrmode_ctl = 0x00020000, \ |
| 80 | .grp_ddrpke = 0x00000000, \ |
| 81 | .grp_ddrmode = 0x00020000, \ |
| 82 | .grp_ctlds = 0x00000038, \ |
| 83 | .grp_ddr_type = 0x000C0000, |
| 84 | |
| 85 | static struct mx6sdl_iomux_ddr_regs ddr_iomux_s = { CM_FX6_DDR_IOMUX_CFG }; |
| 86 | static struct mx6sdl_iomux_grp_regs grp_iomux_s = { CM_FX6_GPR_IOMUX_CFG }; |
| 87 | static struct mx6dq_iomux_ddr_regs ddr_iomux_q = { CM_FX6_DDR_IOMUX_CFG }; |
| 88 | static struct mx6dq_iomux_grp_regs grp_iomux_q = { CM_FX6_GPR_IOMUX_CFG }; |
| 89 | |
| 90 | static struct mx6_mmdc_calibration cm_fx6_calib_s = { |
| 91 | .p0_mpwldectrl0 = 0x005B0061, |
| 92 | .p0_mpwldectrl1 = 0x004F0055, |
| 93 | .p0_mpdgctrl0 = 0x0314030C, |
| 94 | .p0_mpdgctrl1 = 0x025C0268, |
| 95 | .p0_mprddlctl = 0x42464646, |
| 96 | .p0_mpwrdlctl = 0x36322C34, |
| 97 | }; |
| 98 | |
| 99 | static struct mx6_ddr_sysinfo cm_fx6_sysinfo_s = { |
| 100 | .cs1_mirror = 1, |
| 101 | .cs_density = 16, |
| 102 | .bi_on = 1, |
| 103 | .rtt_nom = 1, |
| 104 | .rtt_wr = 0, |
| 105 | .ralat = 5, |
| 106 | .walat = 1, |
| 107 | .mif3_mode = 3, |
| 108 | .rst_to_cke = 0x23, |
| 109 | .sde_to_rst = 0x10, |
| 110 | }; |
| 111 | |
| 112 | static struct mx6_ddr3_cfg cm_fx6_ddr3_cfg_s = { |
| 113 | .mem_speed = 800, |
| 114 | .density = 4, |
| 115 | .rowaddr = 14, |
| 116 | .coladdr = 10, |
| 117 | .pagesz = 2, |
| 118 | .trcd = 1800, |
| 119 | .trcmin = 5200, |
| 120 | .trasmin = 3600, |
| 121 | .SRT = 0, |
| 122 | }; |
| 123 | |
| 124 | static void spl_mx6s_dram_init(enum ddr_config dram_config, bool reset) |
| 125 | { |
| 126 | if (reset) |
| 127 | ((struct mmdc_p_regs *)MX6_MMDC_P0_MDCTL)->mdmisc = 2; |
| 128 | |
| 129 | switch (dram_config) { |
| 130 | case DDR_16BIT_256MB: |
| 131 | cm_fx6_sysinfo_s.dsize = 0; |
| 132 | cm_fx6_sysinfo_s.ncs = 1; |
| 133 | break; |
| 134 | case DDR_32BIT_512MB: |
| 135 | cm_fx6_sysinfo_s.dsize = 1; |
| 136 | cm_fx6_sysinfo_s.ncs = 1; |
| 137 | break; |
| 138 | case DDR_32BIT_1GB: |
| 139 | cm_fx6_sysinfo_s.dsize = 1; |
| 140 | cm_fx6_sysinfo_s.ncs = 2; |
| 141 | break; |
| 142 | default: |
| 143 | puts("Tried to setup invalid DDR configuration\n"); |
| 144 | hang(); |
| 145 | } |
| 146 | |
| 147 | mx6_dram_cfg(&cm_fx6_sysinfo_s, &cm_fx6_calib_s, &cm_fx6_ddr3_cfg_s); |
| 148 | udelay(100); |
| 149 | } |
| 150 | |
| 151 | static struct mx6_mmdc_calibration cm_fx6_calib_q = { |
| 152 | .p0_mpwldectrl0 = 0x00630068, |
| 153 | .p0_mpwldectrl1 = 0x0068005D, |
| 154 | .p0_mpdgctrl0 = 0x04140428, |
| 155 | .p0_mpdgctrl1 = 0x037C037C, |
| 156 | .p0_mprddlctl = 0x3C30303A, |
| 157 | .p0_mpwrdlctl = 0x3A344038, |
| 158 | .p1_mpwldectrl0 = 0x0035004C, |
| 159 | .p1_mpwldectrl1 = 0x00170026, |
| 160 | .p1_mpdgctrl0 = 0x0374037C, |
| 161 | .p1_mpdgctrl1 = 0x0350032C, |
| 162 | .p1_mprddlctl = 0x30322A3C, |
| 163 | .p1_mpwrdlctl = 0x48304A3E, |
| 164 | }; |
| 165 | |
| 166 | static struct mx6_ddr_sysinfo cm_fx6_sysinfo_q = { |
| 167 | .cs_density = 16, |
| 168 | .cs1_mirror = 1, |
| 169 | .bi_on = 1, |
| 170 | .rtt_nom = 1, |
| 171 | .rtt_wr = 0, |
| 172 | .ralat = 5, |
| 173 | .walat = 1, |
| 174 | .mif3_mode = 3, |
| 175 | .rst_to_cke = 0x23, |
| 176 | .sde_to_rst = 0x10, |
| 177 | }; |
| 178 | |
| 179 | static struct mx6_ddr3_cfg cm_fx6_ddr3_cfg_q = { |
| 180 | .mem_speed = 1066, |
| 181 | .density = 4, |
| 182 | .rowaddr = 14, |
| 183 | .coladdr = 10, |
| 184 | .pagesz = 2, |
| 185 | .trcd = 1324, |
| 186 | .trcmin = 59500, |
| 187 | .trasmin = 9750, |
| 188 | .SRT = 0, |
| 189 | }; |
| 190 | |
| 191 | static void spl_mx6q_dram_init(enum ddr_config dram_config, bool reset) |
| 192 | { |
| 193 | if (reset) |
| 194 | ((struct mmdc_p_regs *)MX6_MMDC_P0_MDCTL)->mdmisc = 2; |
| 195 | |
| 196 | cm_fx6_ddr3_cfg_q.rowaddr = 14; |
| 197 | switch (dram_config) { |
| 198 | case DDR_16BIT_256MB: |
| 199 | cm_fx6_sysinfo_q.dsize = 0; |
| 200 | cm_fx6_sysinfo_q.ncs = 1; |
| 201 | break; |
| 202 | case DDR_32BIT_512MB: |
| 203 | cm_fx6_sysinfo_q.dsize = 1; |
| 204 | cm_fx6_sysinfo_q.ncs = 1; |
| 205 | break; |
| 206 | case DDR_64BIT_1GB: |
| 207 | cm_fx6_sysinfo_q.dsize = 2; |
| 208 | cm_fx6_sysinfo_q.ncs = 1; |
| 209 | break; |
| 210 | case DDR_64BIT_2GB: |
| 211 | cm_fx6_sysinfo_q.dsize = 2; |
| 212 | cm_fx6_sysinfo_q.ncs = 2; |
| 213 | break; |
| 214 | case DDR_64BIT_4GB: |
| 215 | cm_fx6_sysinfo_q.dsize = 2; |
| 216 | cm_fx6_sysinfo_q.ncs = 2; |
| 217 | cm_fx6_ddr3_cfg_q.rowaddr = 15; |
| 218 | break; |
| 219 | default: |
| 220 | puts("Tried to setup invalid DDR configuration\n"); |
| 221 | hang(); |
| 222 | } |
| 223 | |
| 224 | mx6_dram_cfg(&cm_fx6_sysinfo_q, &cm_fx6_calib_q, &cm_fx6_ddr3_cfg_q); |
| 225 | udelay(100); |
| 226 | } |
| 227 | |
| 228 | static int cm_fx6_spl_dram_init(void) |
| 229 | { |
| 230 | unsigned long bank1_size, bank2_size; |
| 231 | |
| 232 | switch (get_cpu_type()) { |
| 233 | case MXC_CPU_MX6SOLO: |
| 234 | mx6sdl_dram_iocfg(64, &ddr_iomux_s, &grp_iomux_s); |
| 235 | |
| 236 | spl_mx6s_dram_init(DDR_32BIT_1GB, false); |
| 237 | bank1_size = get_ram_size((long int *)PHYS_SDRAM_1, 0x80000000); |
Nikita Kiryanov | ab87281 | 2014-10-29 17:56:22 +0200 | [diff] [blame] | 238 | bank2_size = get_ram_size((long int *)PHYS_SDRAM_2, 0x80000000); |
Nikita Kiryanov | f5cab0f | 2014-09-07 18:59:29 +0300 | [diff] [blame] | 239 | if (bank1_size == 0x20000000) { |
Nikita Kiryanov | ab87281 | 2014-10-29 17:56:22 +0200 | [diff] [blame] | 240 | if (bank2_size == 0x20000000) |
| 241 | return 0; |
| 242 | |
Nikita Kiryanov | f5cab0f | 2014-09-07 18:59:29 +0300 | [diff] [blame] | 243 | spl_mx6s_dram_init(DDR_32BIT_512MB, true); |
| 244 | return 0; |
| 245 | } |
| 246 | |
| 247 | spl_mx6s_dram_init(DDR_16BIT_256MB, true); |
| 248 | bank1_size = get_ram_size((long int *)PHYS_SDRAM_1, 0x80000000); |
| 249 | if (bank1_size == 0x10000000) |
| 250 | return 0; |
| 251 | |
| 252 | break; |
| 253 | case MXC_CPU_MX6D: |
| 254 | case MXC_CPU_MX6Q: |
| 255 | mx6dq_dram_iocfg(64, &ddr_iomux_q, &grp_iomux_q); |
| 256 | |
| 257 | spl_mx6q_dram_init(DDR_64BIT_4GB, false); |
| 258 | bank1_size = get_ram_size((long int *)PHYS_SDRAM_1, 0x80000000); |
| 259 | if (bank1_size == 0x80000000) |
| 260 | return 0; |
| 261 | |
| 262 | if (bank1_size == 0x40000000) { |
| 263 | bank2_size = get_ram_size((long int *)PHYS_SDRAM_2, |
| 264 | 0x80000000); |
| 265 | if (bank2_size == 0x40000000) { |
| 266 | /* Don't do a full reset here */ |
| 267 | spl_mx6q_dram_init(DDR_64BIT_2GB, false); |
| 268 | } else { |
| 269 | spl_mx6q_dram_init(DDR_64BIT_1GB, true); |
| 270 | } |
| 271 | |
| 272 | return 0; |
| 273 | } |
| 274 | |
| 275 | spl_mx6q_dram_init(DDR_32BIT_512MB, true); |
| 276 | bank1_size = get_ram_size((long int *)PHYS_SDRAM_1, 0x80000000); |
| 277 | if (bank1_size == 0x20000000) |
| 278 | return 0; |
| 279 | |
| 280 | spl_mx6q_dram_init(DDR_16BIT_256MB, true); |
| 281 | bank1_size = get_ram_size((long int *)PHYS_SDRAM_1, 0x80000000); |
| 282 | if (bank1_size == 0x10000000) |
| 283 | return 0; |
| 284 | |
| 285 | break; |
| 286 | } |
| 287 | |
| 288 | return -1; |
| 289 | } |
| 290 | |
| 291 | static iomux_v3_cfg_t const uart4_pads[] = { |
| 292 | IOMUX_PADS(PAD_KEY_COL0__UART4_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)), |
| 293 | IOMUX_PADS(PAD_KEY_ROW0__UART4_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)), |
| 294 | }; |
| 295 | |
| 296 | static void cm_fx6_setup_uart(void) |
| 297 | { |
| 298 | SETUP_IOMUX_PADS(uart4_pads); |
| 299 | enable_uart_clk(1); |
| 300 | } |
| 301 | |
| 302 | #ifdef CONFIG_SPL_SPI_SUPPORT |
| 303 | static void cm_fx6_setup_ecspi(void) |
| 304 | { |
| 305 | cm_fx6_set_ecspi_iomux(); |
| 306 | enable_cspi_clock(1, 0); |
| 307 | } |
| 308 | #else |
| 309 | static void cm_fx6_setup_ecspi(void) { } |
| 310 | #endif |
| 311 | |
| 312 | void board_init_f(ulong dummy) |
| 313 | { |
Nikita Kiryanov | 59d0609 | 2014-08-20 15:09:01 +0300 | [diff] [blame] | 314 | struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; |
| 315 | |
Nikita Kiryanov | 59d0609 | 2014-08-20 15:09:01 +0300 | [diff] [blame] | 316 | /* |
| 317 | * We don't use DMA in SPL, but we do need it in U-Boot. U-Boot |
| 318 | * initializes DMA very early (before all board code), so the only |
| 319 | * opportunity we have to initialize APBHDMA clocks is in SPL. |
| 320 | */ |
| 321 | setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK); |
| 322 | enable_usdhc_clk(1, 2); |
| 323 | |
Nikita Kiryanov | f5cab0f | 2014-09-07 18:59:29 +0300 | [diff] [blame] | 324 | arch_cpu_init(); |
| 325 | timer_init(); |
| 326 | cm_fx6_setup_ecspi(); |
| 327 | cm_fx6_setup_uart(); |
| 328 | get_clocks(); |
| 329 | preloader_console_init(); |
| 330 | gpio_direction_output(CM_FX6_GREEN_LED, 1); |
| 331 | if (cm_fx6_spl_dram_init()) { |
| 332 | puts("!!!ERROR!!! DRAM detection failed!!!\n"); |
| 333 | hang(); |
| 334 | } |
| 335 | |
| 336 | memset(__bss_start, 0, __bss_end - __bss_start); |
| 337 | board_init_r(NULL, 0); |
| 338 | } |
| 339 | |
| 340 | void spl_board_init(void) |
| 341 | { |
| 342 | u32 boot_device = spl_boot_device(); |
| 343 | |
| 344 | if (boot_device == BOOT_DEVICE_SPI) |
| 345 | puts("Booting from SPI flash\n"); |
| 346 | else if (boot_device == BOOT_DEVICE_MMC1) |
| 347 | puts("Booting from MMC\n"); |
| 348 | else |
| 349 | puts("Unknown boot device\n"); |
| 350 | } |
| 351 | |
| 352 | #ifdef CONFIG_SPL_MMC_SUPPORT |
| 353 | static struct fsl_esdhc_cfg usdhc_cfg = { |
| 354 | .esdhc_base = USDHC3_BASE_ADDR, |
| 355 | .max_bus_width = 4, |
| 356 | }; |
| 357 | |
| 358 | int board_mmc_init(bd_t *bis) |
| 359 | { |
| 360 | cm_fx6_set_usdhc_iomux(); |
| 361 | |
| 362 | usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); |
| 363 | |
| 364 | return fsl_esdhc_initialize(bis, &usdhc_cfg); |
| 365 | } |
| 366 | #endif |