Dave Liu | 5f82043 | 2006-11-03 19:33:44 -0600 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2006 Freescale Semiconductor, Inc. |
| 3 | * |
| 4 | * Dave Liu <daveliu@freescale.com> |
| 5 | * based on board/mpc8349emds/mpc8349emds.c |
| 6 | * |
| 7 | * See file CREDITS for list of people who contributed to this |
| 8 | * project. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public License as |
| 12 | * published by the Free Software Foundation; either version 2 of |
| 13 | * the License, or (at your option) any later version. |
| 14 | */ |
| 15 | |
| 16 | #include <common.h> |
| 17 | #include <ioports.h> |
| 18 | #include <mpc83xx.h> |
| 19 | #include <i2c.h> |
| 20 | #include <spd.h> |
| 21 | #include <miiphy.h> |
| 22 | #include <command.h> |
| 23 | #if defined(CONFIG_PCI) |
| 24 | #include <pci.h> |
| 25 | #endif |
| 26 | #if defined(CONFIG_SPD_EEPROM) |
| 27 | #include <spd_sdram.h> |
| 28 | #else |
| 29 | #include <asm/mmu.h> |
| 30 | #endif |
| 31 | |
| 32 | int board_early_init_f(void) |
| 33 | { |
| 34 | volatile u8 *bcsr = (volatile u8 *)CFG_BCSR; |
| 35 | |
| 36 | /* Enable flash write */ |
| 37 | bcsr[0xa] &= ~0x04; |
| 38 | |
| 39 | return 0; |
| 40 | } |
| 41 | |
| 42 | #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRC) |
| 43 | extern void ddr_enable_ecc(unsigned int dram_size); |
| 44 | #endif |
| 45 | int fixed_sdram(void); |
| 46 | void sdram_init(void); |
| 47 | |
| 48 | long int initdram(int board_type) |
| 49 | { |
| 50 | volatile immap_t *im = (immap_t *) CFG_IMMRBAR; |
| 51 | u32 msize = 0; |
| 52 | |
| 53 | if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im) |
| 54 | return -1; |
| 55 | |
| 56 | /* DDR SDRAM - Main SODIMM */ |
| 57 | im->sysconf.ddrlaw[0].bar = CFG_DDR_BASE & LAWBAR_BAR; |
| 58 | #if defined(CONFIG_SPD_EEPROM) |
| 59 | msize = spd_sdram(); |
| 60 | #else |
| 61 | msize = fixed_sdram(); |
| 62 | #endif |
| 63 | |
| 64 | #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRC) |
| 65 | /* |
| 66 | * Initialize DDR ECC byte |
| 67 | */ |
| 68 | ddr_enable_ecc(msize * 1024 * 1024); |
| 69 | #endif |
| 70 | /* |
| 71 | * Initialize SDRAM if it is on local bus. |
| 72 | */ |
| 73 | sdram_init(); |
| 74 | puts(" DDR RAM: "); |
| 75 | /* return total bus SDRAM size(bytes) -- DDR */ |
| 76 | return (msize * 1024 * 1024); |
| 77 | } |
| 78 | |
| 79 | #if !defined(CONFIG_SPD_EEPROM) |
| 80 | /************************************************************************* |
| 81 | * fixed sdram init -- doesn't use serial presence detect. |
| 82 | ************************************************************************/ |
| 83 | int fixed_sdram(void) |
| 84 | { |
| 85 | volatile immap_t *im = (immap_t *) CFG_IMMRBAR; |
| 86 | u32 msize = 0; |
| 87 | u32 ddr_size; |
| 88 | u32 ddr_size_log2; |
| 89 | |
| 90 | msize = CFG_DDR_SIZE; |
| 91 | for (ddr_size = msize << 20, ddr_size_log2 = 0; |
| 92 | (ddr_size > 1); ddr_size = ddr_size >> 1, ddr_size_log2++) { |
| 93 | if (ddr_size & 1) { |
| 94 | return -1; |
| 95 | } |
| 96 | } |
| 97 | im->sysconf.ddrlaw[0].ar = |
| 98 | LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE); |
| 99 | #if (CFG_DDR_SIZE != 256) |
| 100 | #warning Currenly any ddr size other than 256 is not supported |
| 101 | #endif |
| 102 | im->ddr.csbnds[0].csbnds = 0x00000007; |
| 103 | im->ddr.csbnds[1].csbnds = 0x0008000f; |
| 104 | |
| 105 | im->ddr.cs_config[0] = CFG_DDR_CONFIG; |
| 106 | im->ddr.cs_config[1] = CFG_DDR_CONFIG; |
| 107 | |
| 108 | im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1; |
| 109 | im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2; |
| 110 | im->ddr.sdram_cfg = CFG_DDR_CONTROL; |
| 111 | |
| 112 | im->ddr.sdram_mode = CFG_DDR_MODE; |
| 113 | im->ddr.sdram_interval = CFG_DDR_INTERVAL; |
| 114 | udelay(200); |
| 115 | im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN; |
| 116 | |
| 117 | return msize; |
| 118 | } |
| 119 | #endif /*!CFG_SPD_EEPROM */ |
| 120 | |
| 121 | int checkboard(void) |
| 122 | { |
| 123 | puts("Board: Freescale MPC8360EMDS\n"); |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * if MPC8360EMDS is soldered with SDRAM |
| 129 | */ |
| 130 | #if defined(CFG_BR2_PRELIM) \ |
| 131 | && defined(CFG_OR2_PRELIM) \ |
| 132 | && defined(CFG_LBLAWBAR2_PRELIM) \ |
| 133 | && defined(CFG_LBLAWAR2_PRELIM) |
| 134 | /* |
| 135 | * Initialize SDRAM memory on the Local Bus. |
| 136 | */ |
| 137 | |
| 138 | void sdram_init(void) |
| 139 | { |
| 140 | volatile immap_t *immap = (immap_t *) CFG_IMMRBAR; |
| 141 | volatile lbus83xx_t *lbc = &immap->lbus; |
| 142 | uint *sdram_addr = (uint *) CFG_LBC_SDRAM_BASE; |
| 143 | |
| 144 | puts("\n SDRAM on Local Bus: "); |
| 145 | print_size(CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n"); |
| 146 | /* |
| 147 | * Setup SDRAM Base and Option Registers, already done in cpu_init.c |
| 148 | */ |
| 149 | /*setup mtrpt, lsrt and lbcr for LB bus */ |
| 150 | lbc->lbcr = CFG_LBC_LBCR; |
| 151 | lbc->mrtpr = CFG_LBC_MRTPR; |
| 152 | lbc->lsrt = CFG_LBC_LSRT; |
| 153 | asm("sync"); |
| 154 | |
| 155 | /* |
| 156 | * Configure the SDRAM controller Machine Mode Register. |
| 157 | */ |
| 158 | lbc->lsdmr = CFG_LBC_LSDMR_5; /* Normal Operation */ |
| 159 | lbc->lsdmr = CFG_LBC_LSDMR_1; /* Precharge All Banks */ |
| 160 | asm("sync"); |
| 161 | *sdram_addr = 0xff; |
| 162 | udelay(100); |
| 163 | |
| 164 | /* |
| 165 | * We need do 8 times auto refresh operation. |
| 166 | */ |
| 167 | lbc->lsdmr = CFG_LBC_LSDMR_2; |
| 168 | asm("sync"); |
| 169 | *sdram_addr = 0xff; /* 1 times */ |
| 170 | udelay(100); |
| 171 | *sdram_addr = 0xff; /* 2 times */ |
| 172 | udelay(100); |
| 173 | *sdram_addr = 0xff; /* 3 times */ |
| 174 | udelay(100); |
| 175 | *sdram_addr = 0xff; /* 4 times */ |
| 176 | udelay(100); |
| 177 | *sdram_addr = 0xff; /* 5 times */ |
| 178 | udelay(100); |
| 179 | *sdram_addr = 0xff; /* 6 times */ |
| 180 | udelay(100); |
| 181 | *sdram_addr = 0xff; /* 7 times */ |
| 182 | udelay(100); |
| 183 | *sdram_addr = 0xff; /* 8 times */ |
| 184 | udelay(100); |
| 185 | |
| 186 | /* Mode register write operation */ |
| 187 | lbc->lsdmr = CFG_LBC_LSDMR_4; |
| 188 | asm("sync"); |
| 189 | *(sdram_addr + 0xcc) = 0xff; |
| 190 | udelay(100); |
| 191 | |
| 192 | /* Normal operation */ |
| 193 | lbc->lsdmr = CFG_LBC_LSDMR_5 | 0x40000000; |
| 194 | asm("sync"); |
| 195 | *sdram_addr = 0xff; |
| 196 | udelay(100); |
| 197 | } |
| 198 | #else |
| 199 | void sdram_init(void) |
| 200 | { |
| 201 | puts("SDRAM on Local Bus is NOT available!\n"); |
| 202 | } |
| 203 | #endif |
| 204 | |
| 205 | #if defined(CONFIG_DDR_ECC) && defined(CONFIG_DDR_ECC_CMD) |
| 206 | /* |
| 207 | * ECC user commands |
| 208 | */ |
| 209 | void ecc_print_status(void) |
| 210 | { |
| 211 | volatile immap_t *immap = (immap_t *) CFG_IMMRBAR; |
| 212 | volatile ddr83xx_t *ddr = &immap->ddr; |
| 213 | |
| 214 | printf("\nECC mode: %s\n\n", |
| 215 | (ddr->sdram_cfg & SDRAM_CFG_ECC_EN) ? "ON" : "OFF"); |
| 216 | |
| 217 | /* Interrupts */ |
| 218 | printf("Memory Error Interrupt Enable:\n"); |
| 219 | printf(" Multiple-Bit Error Interrupt Enable: %d\n", |
| 220 | (ddr->err_int_en & ECC_ERR_INT_EN_MBEE) ? 1 : 0); |
| 221 | printf(" Single-Bit Error Interrupt Enable: %d\n", |
| 222 | (ddr->err_int_en & ECC_ERR_INT_EN_SBEE) ? 1 : 0); |
| 223 | printf(" Memory Select Error Interrupt Enable: %d\n\n", |
| 224 | (ddr->err_int_en & ECC_ERR_INT_EN_MSEE) ? 1 : 0); |
| 225 | |
| 226 | /* Error disable */ |
| 227 | printf("Memory Error Disable:\n"); |
| 228 | printf(" Multiple-Bit Error Disable: %d\n", |
| 229 | (ddr->err_disable & ECC_ERROR_DISABLE_MBED) ? 1 : 0); |
| 230 | printf(" Sinle-Bit Error Disable: %d\n", |
| 231 | (ddr->err_disable & ECC_ERROR_DISABLE_SBED) ? 1 : 0); |
| 232 | printf(" Memory Select Error Disable: %d\n\n", |
| 233 | (ddr->err_disable & ECC_ERROR_DISABLE_MSED) ? 1 : 0); |
| 234 | |
| 235 | /* Error injection */ |
| 236 | printf("Memory Data Path Error Injection Mask High/Low: %08lx %08lx\n", |
| 237 | ddr->data_err_inject_hi, ddr->data_err_inject_lo); |
| 238 | |
| 239 | printf("Memory Data Path Error Injection Mask ECC:\n"); |
| 240 | printf(" ECC Mirror Byte: %d\n", |
| 241 | (ddr->ecc_err_inject & ECC_ERR_INJECT_EMB) ? 1 : 0); |
| 242 | printf(" ECC Injection Enable: %d\n", |
| 243 | (ddr->ecc_err_inject & ECC_ERR_INJECT_EIEN) ? 1 : 0); |
| 244 | printf(" ECC Error Injection Mask: 0x%02x\n\n", |
| 245 | ddr->ecc_err_inject & ECC_ERR_INJECT_EEIM); |
| 246 | |
| 247 | /* SBE counter/threshold */ |
| 248 | printf("Memory Single-Bit Error Management (0..255):\n"); |
| 249 | printf(" Single-Bit Error Threshold: %d\n", |
| 250 | (ddr->err_sbe & ECC_ERROR_MAN_SBET) >> ECC_ERROR_MAN_SBET_SHIFT); |
| 251 | printf(" Single-Bit Error Counter: %d\n\n", |
| 252 | (ddr->err_sbe & ECC_ERROR_MAN_SBEC) >> ECC_ERROR_MAN_SBEC_SHIFT); |
| 253 | |
| 254 | /* Error detect */ |
| 255 | printf("Memory Error Detect:\n"); |
| 256 | printf(" Multiple Memory Errors: %d\n", |
| 257 | (ddr->err_detect & ECC_ERROR_DETECT_MME) ? 1 : 0); |
| 258 | printf(" Multiple-Bit Error: %d\n", |
| 259 | (ddr->err_detect & ECC_ERROR_DETECT_MBE) ? 1 : 0); |
| 260 | printf(" Single-Bit Error: %d\n", |
| 261 | (ddr->err_detect & ECC_ERROR_DETECT_SBE) ? 1 : 0); |
| 262 | printf(" Memory Select Error: %d\n\n", |
| 263 | (ddr->err_detect & ECC_ERROR_DETECT_MSE) ? 1 : 0); |
| 264 | |
| 265 | /* Capture data */ |
| 266 | printf("Memory Error Address Capture: 0x%08lx\n", ddr->capture_address); |
| 267 | printf("Memory Data Path Read Capture High/Low: %08lx %08lx\n", |
| 268 | ddr->capture_data_hi, ddr->capture_data_lo); |
| 269 | printf("Memory Data Path Read Capture ECC: 0x%02x\n\n", |
| 270 | ddr->capture_ecc & CAPTURE_ECC_ECE); |
| 271 | |
| 272 | printf("Memory Error Attributes Capture:\n"); |
| 273 | printf(" Data Beat Number: %d\n", |
| 274 | (ddr->capture_attributes & ECC_CAPT_ATTR_BNUM) >> |
| 275 | ECC_CAPT_ATTR_BNUM_SHIFT); |
| 276 | printf(" Transaction Size: %d\n", |
| 277 | (ddr->capture_attributes & ECC_CAPT_ATTR_TSIZ) >> |
| 278 | ECC_CAPT_ATTR_TSIZ_SHIFT); |
| 279 | printf(" Transaction Source: %d\n", |
| 280 | (ddr->capture_attributes & ECC_CAPT_ATTR_TSRC) >> |
| 281 | ECC_CAPT_ATTR_TSRC_SHIFT); |
| 282 | printf(" Transaction Type: %d\n", |
| 283 | (ddr->capture_attributes & ECC_CAPT_ATTR_TTYP) >> |
| 284 | ECC_CAPT_ATTR_TTYP_SHIFT); |
| 285 | printf(" Error Information Valid: %d\n\n", |
| 286 | ddr->capture_attributes & ECC_CAPT_ATTR_VLD); |
| 287 | } |
| 288 | |
| 289 | int do_ecc(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) |
| 290 | { |
| 291 | volatile immap_t *immap = (immap_t *) CFG_IMMRBAR; |
| 292 | volatile ddr83xx_t *ddr = &immap->ddr; |
| 293 | volatile u32 val; |
| 294 | u64 *addr; |
| 295 | u32 count; |
| 296 | register u64 *i; |
| 297 | u32 ret[2]; |
| 298 | u32 pattern[2]; |
| 299 | u32 writeback[2]; |
| 300 | |
| 301 | /* The pattern is written into memory to generate error */ |
| 302 | pattern[0] = 0xfedcba98UL; |
| 303 | pattern[1] = 0x76543210UL; |
| 304 | |
| 305 | /* After injecting error, re-initialize the memory with the value */ |
| 306 | writeback[0] = 0x01234567UL; |
| 307 | writeback[1] = 0x89abcdefUL; |
| 308 | |
| 309 | if (argc > 4) { |
| 310 | printf("Usage:\n%s\n", cmdtp->usage); |
| 311 | return 1; |
| 312 | } |
| 313 | |
| 314 | if (argc == 2) { |
| 315 | if (strcmp(argv[1], "status") == 0) { |
| 316 | ecc_print_status(); |
| 317 | return 0; |
| 318 | } else if (strcmp(argv[1], "captureclear") == 0) { |
| 319 | ddr->capture_address = 0; |
| 320 | ddr->capture_data_hi = 0; |
| 321 | ddr->capture_data_lo = 0; |
| 322 | ddr->capture_ecc = 0; |
| 323 | ddr->capture_attributes = 0; |
| 324 | return 0; |
| 325 | } |
| 326 | } |
| 327 | if (argc == 3) { |
| 328 | if (strcmp(argv[1], "sbecnt") == 0) { |
| 329 | val = simple_strtoul(argv[2], NULL, 10); |
| 330 | if (val > 255) { |
| 331 | printf("Incorrect Counter value, " |
| 332 | "should be 0..255\n"); |
| 333 | return 1; |
| 334 | } |
| 335 | |
| 336 | val = (val << ECC_ERROR_MAN_SBEC_SHIFT); |
| 337 | val |= (ddr->err_sbe & ECC_ERROR_MAN_SBET); |
| 338 | |
| 339 | ddr->err_sbe = val; |
| 340 | return 0; |
| 341 | } else if (strcmp(argv[1], "sbethr") == 0) { |
| 342 | val = simple_strtoul(argv[2], NULL, 10); |
| 343 | if (val > 255) { |
| 344 | printf("Incorrect Counter value, " |
| 345 | "should be 0..255\n"); |
| 346 | return 1; |
| 347 | } |
| 348 | |
| 349 | val = (val << ECC_ERROR_MAN_SBET_SHIFT); |
| 350 | val |= (ddr->err_sbe & ECC_ERROR_MAN_SBEC); |
| 351 | |
| 352 | ddr->err_sbe = val; |
| 353 | return 0; |
| 354 | } else if (strcmp(argv[1], "errdisable") == 0) { |
| 355 | val = ddr->err_disable; |
| 356 | |
| 357 | if (strcmp(argv[2], "+sbe") == 0) { |
| 358 | val |= ECC_ERROR_DISABLE_SBED; |
| 359 | } else if (strcmp(argv[2], "+mbe") == 0) { |
| 360 | val |= ECC_ERROR_DISABLE_MBED; |
| 361 | } else if (strcmp(argv[2], "+mse") == 0) { |
| 362 | val |= ECC_ERROR_DISABLE_MSED; |
| 363 | } else if (strcmp(argv[2], "+all") == 0) { |
| 364 | val |= (ECC_ERROR_DISABLE_SBED | |
| 365 | ECC_ERROR_DISABLE_MBED | |
| 366 | ECC_ERROR_DISABLE_MSED); |
| 367 | } else if (strcmp(argv[2], "-sbe") == 0) { |
| 368 | val &= ~ECC_ERROR_DISABLE_SBED; |
| 369 | } else if (strcmp(argv[2], "-mbe") == 0) { |
| 370 | val &= ~ECC_ERROR_DISABLE_MBED; |
| 371 | } else if (strcmp(argv[2], "-mse") == 0) { |
| 372 | val &= ~ECC_ERROR_DISABLE_MSED; |
| 373 | } else if (strcmp(argv[2], "-all") == 0) { |
| 374 | val &= ~(ECC_ERROR_DISABLE_SBED | |
| 375 | ECC_ERROR_DISABLE_MBED | |
| 376 | ECC_ERROR_DISABLE_MSED); |
| 377 | } else { |
| 378 | printf("Incorrect err_disable field\n"); |
| 379 | return 1; |
| 380 | } |
| 381 | |
| 382 | ddr->err_disable = val; |
| 383 | __asm__ __volatile__("sync"); |
| 384 | __asm__ __volatile__("isync"); |
| 385 | return 0; |
| 386 | } else if (strcmp(argv[1], "errdetectclr") == 0) { |
| 387 | val = ddr->err_detect; |
| 388 | |
| 389 | if (strcmp(argv[2], "mme") == 0) { |
| 390 | val |= ECC_ERROR_DETECT_MME; |
| 391 | } else if (strcmp(argv[2], "sbe") == 0) { |
| 392 | val |= ECC_ERROR_DETECT_SBE; |
| 393 | } else if (strcmp(argv[2], "mbe") == 0) { |
| 394 | val |= ECC_ERROR_DETECT_MBE; |
| 395 | } else if (strcmp(argv[2], "mse") == 0) { |
| 396 | val |= ECC_ERROR_DETECT_MSE; |
| 397 | } else if (strcmp(argv[2], "all") == 0) { |
| 398 | val |= (ECC_ERROR_DETECT_MME | |
| 399 | ECC_ERROR_DETECT_MBE | |
| 400 | ECC_ERROR_DETECT_SBE | |
| 401 | ECC_ERROR_DETECT_MSE); |
| 402 | } else { |
| 403 | printf("Incorrect err_detect field\n"); |
| 404 | return 1; |
| 405 | } |
| 406 | |
| 407 | ddr->err_detect = val; |
| 408 | return 0; |
| 409 | } else if (strcmp(argv[1], "injectdatahi") == 0) { |
| 410 | val = simple_strtoul(argv[2], NULL, 16); |
| 411 | |
| 412 | ddr->data_err_inject_hi = val; |
| 413 | return 0; |
| 414 | } else if (strcmp(argv[1], "injectdatalo") == 0) { |
| 415 | val = simple_strtoul(argv[2], NULL, 16); |
| 416 | |
| 417 | ddr->data_err_inject_lo = val; |
| 418 | return 0; |
| 419 | } else if (strcmp(argv[1], "injectecc") == 0) { |
| 420 | val = simple_strtoul(argv[2], NULL, 16); |
| 421 | if (val > 0xff) { |
| 422 | printf("Incorrect ECC inject mask, " |
| 423 | "should be 0x00..0xff\n"); |
| 424 | return 1; |
| 425 | } |
| 426 | val |= (ddr->ecc_err_inject & ~ECC_ERR_INJECT_EEIM); |
| 427 | |
| 428 | ddr->ecc_err_inject = val; |
| 429 | return 0; |
| 430 | } else if (strcmp(argv[1], "inject") == 0) { |
| 431 | val = ddr->ecc_err_inject; |
| 432 | |
| 433 | if (strcmp(argv[2], "en") == 0) |
| 434 | val |= ECC_ERR_INJECT_EIEN; |
| 435 | else if (strcmp(argv[2], "dis") == 0) |
| 436 | val &= ~ECC_ERR_INJECT_EIEN; |
| 437 | else |
| 438 | printf("Incorrect command\n"); |
| 439 | |
| 440 | ddr->ecc_err_inject = val; |
| 441 | __asm__ __volatile__("sync"); |
| 442 | __asm__ __volatile__("isync"); |
| 443 | return 0; |
| 444 | } else if (strcmp(argv[1], "mirror") == 0) { |
| 445 | val = ddr->ecc_err_inject; |
| 446 | |
| 447 | if (strcmp(argv[2], "en") == 0) |
| 448 | val |= ECC_ERR_INJECT_EMB; |
| 449 | else if (strcmp(argv[2], "dis") == 0) |
| 450 | val &= ~ECC_ERR_INJECT_EMB; |
| 451 | else |
| 452 | printf("Incorrect command\n"); |
| 453 | |
| 454 | ddr->ecc_err_inject = val; |
| 455 | return 0; |
| 456 | } |
| 457 | } |
| 458 | if (argc == 4) { |
| 459 | if (strcmp(argv[1], "testdw") == 0) { |
| 460 | addr = (u64 *) simple_strtoul(argv[2], NULL, 16); |
| 461 | count = simple_strtoul(argv[3], NULL, 16); |
| 462 | |
| 463 | if ((u32) addr % 8) { |
| 464 | printf("Address not alligned on " |
| 465 | "double word boundary\n"); |
| 466 | return 1; |
| 467 | } |
| 468 | disable_interrupts(); |
| 469 | |
| 470 | for (i = addr; i < addr + count; i++) { |
| 471 | |
| 472 | /* enable injects */ |
| 473 | ddr->ecc_err_inject |= ECC_ERR_INJECT_EIEN; |
| 474 | __asm__ __volatile__("sync"); |
| 475 | __asm__ __volatile__("isync"); |
| 476 | |
| 477 | /* write memory location injecting errors */ |
| 478 | ppcDWstore((u32 *) i, pattern); |
| 479 | |
| 480 | /* disable injects */ |
| 481 | ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN; |
| 482 | __asm__ __volatile__("sync"); |
| 483 | __asm__ __volatile__("isync"); |
| 484 | |
| 485 | /* read data, this generates ECC error */ |
| 486 | ppcDWload((u32 *) i, ret); |
| 487 | |
| 488 | /* re-initialize memory, double word write the location again, |
| 489 | * generates new ECC code this time */ |
| 490 | ppcDWstore((u32 *) i, writeback); |
| 491 | } |
| 492 | enable_interrupts(); |
| 493 | return 0; |
| 494 | } |
| 495 | if (strcmp(argv[1], "testword") == 0) { |
| 496 | addr = (u64 *) simple_strtoul(argv[2], NULL, 16); |
| 497 | count = simple_strtoul(argv[3], NULL, 16); |
| 498 | |
| 499 | if ((u32) addr % 8) { |
| 500 | printf("Address not alligned on " |
| 501 | "double word boundary\n"); |
| 502 | return 1; |
| 503 | } |
| 504 | disable_interrupts(); |
| 505 | |
| 506 | for (i = addr; i < addr + count; i++) { |
| 507 | |
| 508 | /* enable injects */ |
| 509 | ddr->ecc_err_inject |= ECC_ERR_INJECT_EIEN; |
| 510 | __asm__ __volatile__("sync"); |
| 511 | __asm__ __volatile__("isync"); |
| 512 | |
| 513 | /* write memory location injecting errors */ |
| 514 | *(u32 *) i = 0xfedcba98UL; |
| 515 | __asm__ __volatile__("sync"); |
| 516 | |
| 517 | /* sub double word write, |
| 518 | * bus will read-modify-write, |
| 519 | * generates ECC error */ |
| 520 | *((u32 *) i + 1) = 0x76543210UL; |
| 521 | __asm__ __volatile__("sync"); |
| 522 | |
| 523 | /* disable injects */ |
| 524 | ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN; |
| 525 | __asm__ __volatile__("sync"); |
| 526 | __asm__ __volatile__("isync"); |
| 527 | |
| 528 | /* re-initialize memory, |
| 529 | * double word write the location again, |
| 530 | * generates new ECC code this time */ |
| 531 | ppcDWstore((u32 *) i, writeback); |
| 532 | } |
| 533 | enable_interrupts(); |
| 534 | return 0; |
| 535 | } |
| 536 | } |
| 537 | printf("Usage:\n%s\n", cmdtp->usage); |
| 538 | return 1; |
| 539 | } |
| 540 | |
| 541 | U_BOOT_CMD(ecc, 4, 0, do_ecc, |
| 542 | "ecc - support for DDR ECC features\n", |
| 543 | "status - print out status info\n" |
| 544 | "ecc captureclear - clear capture regs data\n" |
| 545 | "ecc sbecnt <val> - set Single-Bit Error counter\n" |
| 546 | "ecc sbethr <val> - set Single-Bit Threshold\n" |
| 547 | "ecc errdisable <flag> - clear/set disable Memory Error Disable, flag:\n" |
| 548 | " [-|+]sbe - Single-Bit Error\n" |
| 549 | " [-|+]mbe - Multiple-Bit Error\n" |
| 550 | " [-|+]mse - Memory Select Error\n" |
| 551 | " [-|+]all - all errors\n" |
| 552 | "ecc errdetectclr <flag> - clear Memory Error Detect, flag:\n" |
| 553 | " mme - Multiple Memory Errors\n" |
| 554 | " sbe - Single-Bit Error\n" |
| 555 | " mbe - Multiple-Bit Error\n" |
| 556 | " mse - Memory Select Error\n" |
| 557 | " all - all errors\n" |
| 558 | "ecc injectdatahi <hi> - set Memory Data Path Error Injection Mask High\n" |
| 559 | "ecc injectdatalo <lo> - set Memory Data Path Error Injection Mask Low\n" |
| 560 | "ecc injectecc <ecc> - set ECC Error Injection Mask\n" |
| 561 | "ecc inject <en|dis> - enable/disable error injection\n" |
| 562 | "ecc mirror <en|dis> - enable/disable mirror byte\n" |
| 563 | "ecc testdw <addr> <cnt> - test mem region with double word access:\n" |
| 564 | " - enables injects\n" |
| 565 | " - writes pattern injecting errors with double word access\n" |
| 566 | " - disables injects\n" |
| 567 | " - reads pattern back with double word access, generates error\n" |
| 568 | " - re-inits memory\n" |
| 569 | "ecc testword <addr> <cnt> - test mem region with word access:\n" |
| 570 | " - enables injects\n" |
| 571 | " - writes pattern injecting errors with word access\n" |
| 572 | " - writes pattern with word access, generates error\n" |
| 573 | " - disables injects\n" " - re-inits memory"); |
| 574 | #endif /* if defined(CONFIG_DDR_ECC) && defined(CONFIG_DDR_ECC_CMD) */ |