1 /* 2 * Copyright (C) 2007-2011 Freescale Semiconductor, Inc. 3 * 4 * Dave Liu <daveliu@freescale.com> 5 * based on the contribution of Marian Balakowicz <m8@semihalf.com> 6 * 7 * SPDX-License-Identifier: GPL-2.0+ 8 */ 9 10 #include <common.h> 11 #include <mpc83xx.h> 12 #include <command.h> 13 14 #if defined(CONFIG_DDR_ECC) && defined(CONFIG_DDR_ECC_CMD) 15 void ecc_print_status(void) 16 { 17 immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; 18 #ifdef CONFIG_SYS_FSL_DDR2 19 struct ccsr_ddr __iomem *ddr = &immap->ddr; 20 #else 21 ddr83xx_t *ddr = &immap->ddr; 22 #endif 23 24 printf("\nECC mode: %s\n\n", 25 (ddr->sdram_cfg & SDRAM_CFG_ECC_EN) ? "ON" : "OFF"); 26 27 /* Interrupts */ 28 printf("Memory Error Interrupt Enable:\n"); 29 printf(" Multiple-Bit Error Interrupt Enable: %d\n", 30 (ddr->err_int_en & ECC_ERR_INT_EN_MBEE) ? 1 : 0); 31 printf(" Single-Bit Error Interrupt Enable: %d\n", 32 (ddr->err_int_en & ECC_ERR_INT_EN_SBEE) ? 1 : 0); 33 printf(" Memory Select Error Interrupt Enable: %d\n\n", 34 (ddr->err_int_en & ECC_ERR_INT_EN_MSEE) ? 1 : 0); 35 36 /* Error disable */ 37 printf("Memory Error Disable:\n"); 38 printf(" Multiple-Bit Error Disable: %d\n", 39 (ddr->err_disable & ECC_ERROR_DISABLE_MBED) ? 1 : 0); 40 printf(" Single-Bit Error Disable: %d\n", 41 (ddr->err_disable & ECC_ERROR_DISABLE_SBED) ? 1 : 0); 42 printf(" Memory Select Error Disable: %d\n\n", 43 (ddr->err_disable & ECC_ERROR_DISABLE_MSED) ? 1 : 0); 44 45 /* Error injection */ 46 printf("Memory Data Path Error Injection Mask High/Low: %08x %08x\n", 47 ddr->data_err_inject_hi, ddr->data_err_inject_lo); 48 49 printf("Memory Data Path Error Injection Mask ECC:\n"); 50 printf(" ECC Mirror Byte: %d\n", 51 (ddr->ecc_err_inject & ECC_ERR_INJECT_EMB) ? 1 : 0); 52 printf(" ECC Injection Enable: %d\n", 53 (ddr->ecc_err_inject & ECC_ERR_INJECT_EIEN) ? 1 : 0); 54 printf(" ECC Error Injection Mask: 0x%02x\n\n", 55 ddr->ecc_err_inject & ECC_ERR_INJECT_EEIM); 56 57 /* SBE counter/threshold */ 58 printf("Memory Single-Bit Error Management (0..255):\n"); 59 printf(" Single-Bit Error Threshold: %d\n", 60 (ddr->err_sbe & ECC_ERROR_MAN_SBET) >> ECC_ERROR_MAN_SBET_SHIFT); 61 printf(" Single-Bit Error Counter: %d\n\n", 62 (ddr->err_sbe & ECC_ERROR_MAN_SBEC) >> ECC_ERROR_MAN_SBEC_SHIFT); 63 64 /* Error detect */ 65 printf("Memory Error Detect:\n"); 66 printf(" Multiple Memory Errors: %d\n", 67 (ddr->err_detect & ECC_ERROR_DETECT_MME) ? 1 : 0); 68 printf(" Multiple-Bit Error: %d\n", 69 (ddr->err_detect & ECC_ERROR_DETECT_MBE) ? 1 : 0); 70 printf(" Single-Bit Error: %d\n", 71 (ddr->err_detect & ECC_ERROR_DETECT_SBE) ? 1 : 0); 72 printf(" Memory Select Error: %d\n\n", 73 (ddr->err_detect & ECC_ERROR_DETECT_MSE) ? 1 : 0); 74 75 /* Capture data */ 76 printf("Memory Error Address Capture: 0x%08x\n", ddr->capture_address); 77 printf("Memory Data Path Read Capture High/Low: %08x %08x\n", 78 ddr->capture_data_hi, ddr->capture_data_lo); 79 printf("Memory Data Path Read Capture ECC: 0x%02x\n\n", 80 ddr->capture_ecc & CAPTURE_ECC_ECE); 81 82 printf("Memory Error Attributes Capture:\n"); 83 printf(" Data Beat Number: %d\n", 84 (ddr->capture_attributes & ECC_CAPT_ATTR_BNUM) >> 85 ECC_CAPT_ATTR_BNUM_SHIFT); 86 printf(" Transaction Size: %d\n", 87 (ddr->capture_attributes & ECC_CAPT_ATTR_TSIZ) >> 88 ECC_CAPT_ATTR_TSIZ_SHIFT); 89 printf(" Transaction Source: %d\n", 90 (ddr->capture_attributes & ECC_CAPT_ATTR_TSRC) >> 91 ECC_CAPT_ATTR_TSRC_SHIFT); 92 printf(" Transaction Type: %d\n", 93 (ddr->capture_attributes & ECC_CAPT_ATTR_TTYP) >> 94 ECC_CAPT_ATTR_TTYP_SHIFT); 95 printf(" Error Information Valid: %d\n\n", 96 ddr->capture_attributes & ECC_CAPT_ATTR_VLD); 97 } 98 99 int do_ecc(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) 100 { 101 immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; 102 #ifdef CONFIG_SYS_FSL_DDR2 103 struct ccsr_ddr __iomem *ddr = &immap->ddr; 104 #else 105 ddr83xx_t *ddr = &immap->ddr; 106 #endif 107 volatile u32 val; 108 u64 *addr; 109 u32 count; 110 register u64 *i; 111 u32 ret[2]; 112 u32 pattern[2]; 113 u32 writeback[2]; 114 115 /* The pattern is written into memory to generate error */ 116 pattern[0] = 0xfedcba98UL; 117 pattern[1] = 0x76543210UL; 118 119 /* After injecting error, re-initialize the memory with the value */ 120 writeback[0] = 0x01234567UL; 121 writeback[1] = 0x89abcdefUL; 122 123 if (argc > 4) 124 return cmd_usage(cmdtp); 125 126 if (argc == 2) { 127 if (strcmp(argv[1], "status") == 0) { 128 ecc_print_status(); 129 return 0; 130 } else if (strcmp(argv[1], "captureclear") == 0) { 131 ddr->capture_address = 0; 132 ddr->capture_data_hi = 0; 133 ddr->capture_data_lo = 0; 134 ddr->capture_ecc = 0; 135 ddr->capture_attributes = 0; 136 return 0; 137 } 138 } 139 if (argc == 3) { 140 if (strcmp(argv[1], "sbecnt") == 0) { 141 val = simple_strtoul(argv[2], NULL, 10); 142 if (val > 255) { 143 printf("Incorrect Counter value, " 144 "should be 0..255\n"); 145 return 1; 146 } 147 148 val = (val << ECC_ERROR_MAN_SBEC_SHIFT); 149 val |= (ddr->err_sbe & ECC_ERROR_MAN_SBET); 150 151 ddr->err_sbe = val; 152 return 0; 153 } else if (strcmp(argv[1], "sbethr") == 0) { 154 val = simple_strtoul(argv[2], NULL, 10); 155 if (val > 255) { 156 printf("Incorrect Counter value, " 157 "should be 0..255\n"); 158 return 1; 159 } 160 161 val = (val << ECC_ERROR_MAN_SBET_SHIFT); 162 val |= (ddr->err_sbe & ECC_ERROR_MAN_SBEC); 163 164 ddr->err_sbe = val; 165 return 0; 166 } else if (strcmp(argv[1], "errdisable") == 0) { 167 val = ddr->err_disable; 168 169 if (strcmp(argv[2], "+sbe") == 0) { 170 val |= ECC_ERROR_DISABLE_SBED; 171 } else if (strcmp(argv[2], "+mbe") == 0) { 172 val |= ECC_ERROR_DISABLE_MBED; 173 } else if (strcmp(argv[2], "+mse") == 0) { 174 val |= ECC_ERROR_DISABLE_MSED; 175 } else if (strcmp(argv[2], "+all") == 0) { 176 val |= (ECC_ERROR_DISABLE_SBED | 177 ECC_ERROR_DISABLE_MBED | 178 ECC_ERROR_DISABLE_MSED); 179 } else if (strcmp(argv[2], "-sbe") == 0) { 180 val &= ~ECC_ERROR_DISABLE_SBED; 181 } else if (strcmp(argv[2], "-mbe") == 0) { 182 val &= ~ECC_ERROR_DISABLE_MBED; 183 } else if (strcmp(argv[2], "-mse") == 0) { 184 val &= ~ECC_ERROR_DISABLE_MSED; 185 } else if (strcmp(argv[2], "-all") == 0) { 186 val &= ~(ECC_ERROR_DISABLE_SBED | 187 ECC_ERROR_DISABLE_MBED | 188 ECC_ERROR_DISABLE_MSED); 189 } else { 190 printf("Incorrect err_disable field\n"); 191 return 1; 192 } 193 194 ddr->err_disable = val; 195 __asm__ __volatile__("sync"); 196 __asm__ __volatile__("isync"); 197 return 0; 198 } else if (strcmp(argv[1], "errdetectclr") == 0) { 199 val = ddr->err_detect; 200 201 if (strcmp(argv[2], "mme") == 0) { 202 val |= ECC_ERROR_DETECT_MME; 203 } else if (strcmp(argv[2], "sbe") == 0) { 204 val |= ECC_ERROR_DETECT_SBE; 205 } else if (strcmp(argv[2], "mbe") == 0) { 206 val |= ECC_ERROR_DETECT_MBE; 207 } else if (strcmp(argv[2], "mse") == 0) { 208 val |= ECC_ERROR_DETECT_MSE; 209 } else if (strcmp(argv[2], "all") == 0) { 210 val |= (ECC_ERROR_DETECT_MME | 211 ECC_ERROR_DETECT_MBE | 212 ECC_ERROR_DETECT_SBE | 213 ECC_ERROR_DETECT_MSE); 214 } else { 215 printf("Incorrect err_detect field\n"); 216 return 1; 217 } 218 219 ddr->err_detect = val; 220 return 0; 221 } else if (strcmp(argv[1], "injectdatahi") == 0) { 222 val = simple_strtoul(argv[2], NULL, 16); 223 224 ddr->data_err_inject_hi = val; 225 return 0; 226 } else if (strcmp(argv[1], "injectdatalo") == 0) { 227 val = simple_strtoul(argv[2], NULL, 16); 228 229 ddr->data_err_inject_lo = val; 230 return 0; 231 } else if (strcmp(argv[1], "injectecc") == 0) { 232 val = simple_strtoul(argv[2], NULL, 16); 233 if (val > 0xff) { 234 printf("Incorrect ECC inject mask, " 235 "should be 0x00..0xff\n"); 236 return 1; 237 } 238 val |= (ddr->ecc_err_inject & ~ECC_ERR_INJECT_EEIM); 239 240 ddr->ecc_err_inject = val; 241 return 0; 242 } else if (strcmp(argv[1], "inject") == 0) { 243 val = ddr->ecc_err_inject; 244 245 if (strcmp(argv[2], "en") == 0) 246 val |= ECC_ERR_INJECT_EIEN; 247 else if (strcmp(argv[2], "dis") == 0) 248 val &= ~ECC_ERR_INJECT_EIEN; 249 else 250 printf("Incorrect command\n"); 251 252 ddr->ecc_err_inject = val; 253 __asm__ __volatile__("sync"); 254 __asm__ __volatile__("isync"); 255 return 0; 256 } else if (strcmp(argv[1], "mirror") == 0) { 257 val = ddr->ecc_err_inject; 258 259 if (strcmp(argv[2], "en") == 0) 260 val |= ECC_ERR_INJECT_EMB; 261 else if (strcmp(argv[2], "dis") == 0) 262 val &= ~ECC_ERR_INJECT_EMB; 263 else 264 printf("Incorrect command\n"); 265 266 ddr->ecc_err_inject = val; 267 return 0; 268 } 269 } 270 if (argc == 4) { 271 if (strcmp(argv[1], "testdw") == 0) { 272 addr = (u64 *) simple_strtoul(argv[2], NULL, 16); 273 count = simple_strtoul(argv[3], NULL, 16); 274 275 if ((u32) addr % 8) { 276 printf("Address not aligned on " 277 "double word boundary\n"); 278 return 1; 279 } 280 disable_interrupts(); 281 282 for (i = addr; i < addr + count; i++) { 283 284 /* enable injects */ 285 ddr->ecc_err_inject |= ECC_ERR_INJECT_EIEN; 286 __asm__ __volatile__("sync"); 287 __asm__ __volatile__("isync"); 288 289 /* write memory location injecting errors */ 290 ppcDWstore((u32 *) i, pattern); 291 __asm__ __volatile__("sync"); 292 293 /* disable injects */ 294 ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN; 295 __asm__ __volatile__("sync"); 296 __asm__ __volatile__("isync"); 297 298 /* read data, this generates ECC error */ 299 ppcDWload((u32 *) i, ret); 300 __asm__ __volatile__("sync"); 301 302 /* re-initialize memory, double word write the location again, 303 * generates new ECC code this time */ 304 ppcDWstore((u32 *) i, writeback); 305 __asm__ __volatile__("sync"); 306 } 307 enable_interrupts(); 308 return 0; 309 } 310 if (strcmp(argv[1], "testword") == 0) { 311 addr = (u64 *) simple_strtoul(argv[2], NULL, 16); 312 count = simple_strtoul(argv[3], NULL, 16); 313 314 if ((u32) addr % 8) { 315 printf("Address not aligned on " 316 "double word boundary\n"); 317 return 1; 318 } 319 disable_interrupts(); 320 321 for (i = addr; i < addr + count; i++) { 322 323 /* enable injects */ 324 ddr->ecc_err_inject |= ECC_ERR_INJECT_EIEN; 325 __asm__ __volatile__("sync"); 326 __asm__ __volatile__("isync"); 327 328 /* write memory location injecting errors */ 329 *(u32 *) i = 0xfedcba98UL; 330 __asm__ __volatile__("sync"); 331 332 /* sub double word write, 333 * bus will read-modify-write, 334 * generates ECC error */ 335 *((u32 *) i + 1) = 0x76543210UL; 336 __asm__ __volatile__("sync"); 337 338 /* disable injects */ 339 ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN; 340 __asm__ __volatile__("sync"); 341 __asm__ __volatile__("isync"); 342 343 /* re-initialize memory, 344 * double word write the location again, 345 * generates new ECC code this time */ 346 ppcDWstore((u32 *) i, writeback); 347 __asm__ __volatile__("sync"); 348 } 349 enable_interrupts(); 350 return 0; 351 } 352 } 353 return cmd_usage(cmdtp); 354 } 355 356 U_BOOT_CMD(ecc, 4, 0, do_ecc, 357 "support for DDR ECC features", 358 "status - print out status info\n" 359 "ecc captureclear - clear capture regs data\n" 360 "ecc sbecnt <val> - set Single-Bit Error counter\n" 361 "ecc sbethr <val> - set Single-Bit Threshold\n" 362 "ecc errdisable <flag> - clear/set disable Memory Error Disable, flag:\n" 363 " [-|+]sbe - Single-Bit Error\n" 364 " [-|+]mbe - Multiple-Bit Error\n" 365 " [-|+]mse - Memory Select Error\n" 366 " [-|+]all - all errors\n" 367 "ecc errdetectclr <flag> - clear Memory Error Detect, flag:\n" 368 " mme - Multiple Memory Errors\n" 369 " sbe - Single-Bit Error\n" 370 " mbe - Multiple-Bit Error\n" 371 " mse - Memory Select Error\n" 372 " all - all errors\n" 373 "ecc injectdatahi <hi> - set Memory Data Path Error Injection Mask High\n" 374 "ecc injectdatalo <lo> - set Memory Data Path Error Injection Mask Low\n" 375 "ecc injectecc <ecc> - set ECC Error Injection Mask\n" 376 "ecc inject <en|dis> - enable/disable error injection\n" 377 "ecc mirror <en|dis> - enable/disable mirror byte\n" 378 "ecc testdw <addr> <cnt> - test mem region with double word access:\n" 379 " - enables injects\n" 380 " - writes pattern injecting errors with double word access\n" 381 " - disables injects\n" 382 " - reads pattern back with double word access, generates error\n" 383 " - re-inits memory\n" 384 "ecc testword <addr> <cnt> - test mem region with word access:\n" 385 " - enables injects\n" 386 " - writes pattern injecting errors with word access\n" 387 " - writes pattern with word access, generates error\n" 388 " - disables injects\n" " - re-inits memory"); 389 #endif 390