int do_ecc ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { volatile immap_t *immap = (immap_t *)CFG_IMMR; volatile ddr83xx_t *ddr = &immap->ddr; volatile u32 val; u64 *addr, count, val64; register u64 *i; if (argc > 4) { printf ("Usage:\n%s\n", cmdtp->usage); return 1; } if (argc == 2) { if (strcmp(argv[1], "status") == 0) { ecc_print_status(); return 0; } else if (strcmp(argv[1], "captureclear") == 0) { ddr->capture_address = 0; ddr->capture_data_hi = 0; ddr->capture_data_lo = 0; ddr->capture_ecc = 0; ddr->capture_attributes = 0; return 0; } } if (argc == 3) { if (strcmp(argv[1], "sbecnt") == 0) { val = simple_strtoul(argv[2], NULL, 10); if (val > 255) { printf("Incorrect Counter value, should be 0..255\n"); return 1; } val = (val << ECC_ERROR_MAN_SBEC_SHIFT); val |= (ddr->err_sbe & ECC_ERROR_MAN_SBET); ddr->err_sbe = val; return 0; } else if (strcmp(argv[1], "sbethr") == 0) { val = simple_strtoul(argv[2], NULL, 10); if (val > 255) { printf("Incorrect Counter value, should be 0..255\n"); return 1; } val = (val << ECC_ERROR_MAN_SBET_SHIFT); val |= (ddr->err_sbe & ECC_ERROR_MAN_SBEC); ddr->err_sbe = val; return 0; } else if (strcmp(argv[1], "errdisable") == 0) { val = ddr->err_disable; if (strcmp(argv[2], "+sbe") == 0) { val |= ECC_ERROR_DISABLE_SBED; } else if (strcmp(argv[2], "+mbe") == 0) { val |= ECC_ERROR_DISABLE_MBED; } else if (strcmp(argv[2], "+mse") == 0) { val |= ECC_ERROR_DISABLE_MSED; } else if (strcmp(argv[2], "+all") == 0) { val |= (ECC_ERROR_DISABLE_SBED | ECC_ERROR_DISABLE_MBED | ECC_ERROR_DISABLE_MSED); } else if (strcmp(argv[2], "-sbe") == 0) { val &= ~ECC_ERROR_DISABLE_SBED; } else if (strcmp(argv[2], "-mbe") == 0) { val &= ~ECC_ERROR_DISABLE_MBED; } else if (strcmp(argv[2], "-mse") == 0) { val &= ~ECC_ERROR_DISABLE_MSED; } else if (strcmp(argv[2], "-all") == 0) { val &= ~(ECC_ERROR_DISABLE_SBED | ECC_ERROR_DISABLE_MBED | ECC_ERROR_DISABLE_MSED); } else { printf("Incorrect err_disable field\n"); return 1; } ddr->err_disable = val; __asm__ __volatile__ ("sync"); __asm__ __volatile__ ("isync"); return 0; } else if (strcmp(argv[1], "errdetectclr") == 0) { val = ddr->err_detect; if (strcmp(argv[2], "mme") == 0) { val |= ECC_ERROR_DETECT_MME; } else if (strcmp(argv[2], "sbe") == 0) { val |= ECC_ERROR_DETECT_SBE; } else if (strcmp(argv[2], "mbe") == 0) { val |= ECC_ERROR_DETECT_MBE; } else if (strcmp(argv[2], "mse") == 0) { val |= ECC_ERROR_DETECT_MSE; } else if (strcmp(argv[2], "all") == 0) { val |= (ECC_ERROR_DETECT_MME | ECC_ERROR_DETECT_MBE | ECC_ERROR_DETECT_SBE | ECC_ERROR_DETECT_MSE); } else { printf("Incorrect err_detect field\n"); return 1; } ddr->err_detect = val; return 0; } else if (strcmp(argv[1], "injectdatahi") == 0) { val = simple_strtoul(argv[2], NULL, 16); ddr->data_err_inject_hi = val; return 0; } else if (strcmp(argv[1], "injectdatalo") == 0) { val = simple_strtoul(argv[2], NULL, 16); ddr->data_err_inject_lo = val; return 0; } else if (strcmp(argv[1], "injectecc") == 0) { val = simple_strtoul(argv[2], NULL, 16); if (val > 0xff) { printf("Incorrect ECC inject mask, should be 0x00..0xff\n"); return 1; } val |= (ddr->ecc_err_inject & ~ECC_ERR_INJECT_EEIM); ddr->ecc_err_inject = val; return 0; } else if (strcmp(argv[1], "inject") == 0) { val = ddr->ecc_err_inject; if (strcmp(argv[2], "en") == 0) val |= ECC_ERR_INJECT_EIEN; else if (strcmp(argv[2], "dis") == 0) val &= ~ECC_ERR_INJECT_EIEN; else printf("Incorrect command\n"); ddr->ecc_err_inject = val; __asm__ __volatile__ ("sync"); __asm__ __volatile__ ("isync"); return 0; } else if (strcmp(argv[1], "mirror") == 0) { val = ddr->ecc_err_inject; if (strcmp(argv[2], "en") == 0) val |= ECC_ERR_INJECT_EMB; else if (strcmp(argv[2], "dis") == 0) val &= ~ECC_ERR_INJECT_EMB; else printf("Incorrect command\n"); ddr->ecc_err_inject = val; return 0; } } if (argc == 4) { if (strcmp(argv[1], "test") == 0) { addr = (u64 *)simple_strtoul(argv[2], NULL, 16); count = simple_strtoul(argv[3], NULL, 16); if ((u32)addr % 8) { printf("Address not alligned on double word boundary\n"); return 1; } disable_interrupts(); icache_disable(); for (i = addr; i < addr + count; i++) { /* enable injects */ ddr->ecc_err_inject |= ECC_ERR_INJECT_EIEN; __asm__ __volatile__ ("sync"); __asm__ __volatile__ ("isync"); /* write memory location injecting errors */ *i = 0x1122334455667788ULL; __asm__ __volatile__ ("sync"); /* disable injects */ ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN; __asm__ __volatile__ ("sync"); __asm__ __volatile__ ("isync"); /* read data, this generates ECC error */ val64 = *i; __asm__ __volatile__ ("sync"); /* disable errors for ECC */ ddr->err_disable |= ~ECC_ERROR_ENABLE; __asm__ __volatile__ ("sync"); __asm__ __volatile__ ("isync"); /* re-initialize memory, write the location again * NOT injecting errors this time */ *i = 0xcafecafecafecafeULL; __asm__ __volatile__ ("sync"); /* enable errors for ECC */ ddr->err_disable &= ECC_ERROR_ENABLE; __asm__ __volatile__ ("sync"); __asm__ __volatile__ ("isync"); } icache_enable(); enable_interrupts(); return 0; } } printf ("Usage:\n%s\n", cmdtp->usage); return 1; }
int do_ecc(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) { volatile immap_t *immap = (immap_t *) CFG_IMMR; volatile ddr83xx_t *ddr = &immap->ddr; volatile u32 val; u64 *addr; u32 count; register u64 *i; u32 ret[2]; u32 pattern[2]; u32 writeback[2]; /* The pattern is written into memory to generate error */ pattern[0] = 0xfedcba98UL; pattern[1] = 0x76543210UL; /* After injecting error, re-initialize the memory with the value */ writeback[0] = 0x01234567UL; writeback[1] = 0x89abcdefUL; if (argc > 4) { printf("Usage:\n%s\n", cmdtp->usage); return 1; } if (argc == 2) { if (strcmp(argv[1], "status") == 0) { ecc_print_status(); return 0; } else if (strcmp(argv[1], "captureclear") == 0) { ddr->capture_address = 0; ddr->capture_data_hi = 0; ddr->capture_data_lo = 0; ddr->capture_ecc = 0; ddr->capture_attributes = 0; return 0; } } if (argc == 3) { if (strcmp(argv[1], "sbecnt") == 0) { val = simple_strtoul(argv[2], NULL, 10); if (val > 255) { printf("Incorrect Counter value, " "should be 0..255\n"); return 1; } val = (val << ECC_ERROR_MAN_SBEC_SHIFT); val |= (ddr->err_sbe & ECC_ERROR_MAN_SBET); ddr->err_sbe = val; return 0; } else if (strcmp(argv[1], "sbethr") == 0) { val = simple_strtoul(argv[2], NULL, 10); if (val > 255) { printf("Incorrect Counter value, " "should be 0..255\n"); return 1; } val = (val << ECC_ERROR_MAN_SBET_SHIFT); val |= (ddr->err_sbe & ECC_ERROR_MAN_SBEC); ddr->err_sbe = val; return 0; } else if (strcmp(argv[1], "errdisable") == 0) { val = ddr->err_disable; if (strcmp(argv[2], "+sbe") == 0) { val |= ECC_ERROR_DISABLE_SBED; } else if (strcmp(argv[2], "+mbe") == 0) { val |= ECC_ERROR_DISABLE_MBED; } else if (strcmp(argv[2], "+mse") == 0) { val |= ECC_ERROR_DISABLE_MSED; } else if (strcmp(argv[2], "+all") == 0) { val |= (ECC_ERROR_DISABLE_SBED | ECC_ERROR_DISABLE_MBED | ECC_ERROR_DISABLE_MSED); } else if (strcmp(argv[2], "-sbe") == 0) { val &= ~ECC_ERROR_DISABLE_SBED; } else if (strcmp(argv[2], "-mbe") == 0) { val &= ~ECC_ERROR_DISABLE_MBED; } else if (strcmp(argv[2], "-mse") == 0) { val &= ~ECC_ERROR_DISABLE_MSED; } else if (strcmp(argv[2], "-all") == 0) { val &= ~(ECC_ERROR_DISABLE_SBED | ECC_ERROR_DISABLE_MBED | ECC_ERROR_DISABLE_MSED); } else { printf("Incorrect err_disable field\n"); return 1; } ddr->err_disable = val; __asm__ __volatile__("sync"); __asm__ __volatile__("isync"); return 0; } else if (strcmp(argv[1], "errdetectclr") == 0) { val = ddr->err_detect; if (strcmp(argv[2], "mme") == 0) { val |= ECC_ERROR_DETECT_MME; } else if (strcmp(argv[2], "sbe") == 0) { val |= ECC_ERROR_DETECT_SBE; } else if (strcmp(argv[2], "mbe") == 0) { val |= ECC_ERROR_DETECT_MBE; } else if (strcmp(argv[2], "mse") == 0) { val |= ECC_ERROR_DETECT_MSE; } else if (strcmp(argv[2], "all") == 0) { val |= (ECC_ERROR_DETECT_MME | ECC_ERROR_DETECT_MBE | ECC_ERROR_DETECT_SBE | ECC_ERROR_DETECT_MSE); } else { printf("Incorrect err_detect field\n"); return 1; } ddr->err_detect = val; return 0; } else if (strcmp(argv[1], "injectdatahi") == 0) { val = simple_strtoul(argv[2], NULL, 16); ddr->data_err_inject_hi = val; return 0; } else if (strcmp(argv[1], "injectdatalo") == 0) { val = simple_strtoul(argv[2], NULL, 16); ddr->data_err_inject_lo = val; return 0; } else if (strcmp(argv[1], "injectecc") == 0) { val = simple_strtoul(argv[2], NULL, 16); if (val > 0xff) { printf("Incorrect ECC inject mask, " "should be 0x00..0xff\n"); return 1; } val |= (ddr->ecc_err_inject & ~ECC_ERR_INJECT_EEIM); ddr->ecc_err_inject = val; return 0; } else if (strcmp(argv[1], "inject") == 0) { val = ddr->ecc_err_inject; if (strcmp(argv[2], "en") == 0) val |= ECC_ERR_INJECT_EIEN; else if (strcmp(argv[2], "dis") == 0) val &= ~ECC_ERR_INJECT_EIEN; else printf("Incorrect command\n"); ddr->ecc_err_inject = val; __asm__ __volatile__("sync"); __asm__ __volatile__("isync"); return 0; } else if (strcmp(argv[1], "mirror") == 0) { val = ddr->ecc_err_inject; if (strcmp(argv[2], "en") == 0) val |= ECC_ERR_INJECT_EMB; else if (strcmp(argv[2], "dis") == 0) val &= ~ECC_ERR_INJECT_EMB; else printf("Incorrect command\n"); ddr->ecc_err_inject = val; return 0; } } if (argc == 4) { if (strcmp(argv[1], "testdw") == 0) { addr = (u64 *) simple_strtoul(argv[2], NULL, 16); count = simple_strtoul(argv[3], NULL, 16); if ((u32) addr % 8) { printf("Address not alligned on " "double word boundary\n"); return 1; } disable_interrupts(); for (i = addr; i < addr + count; i++) { /* enable injects */ ddr->ecc_err_inject |= ECC_ERR_INJECT_EIEN; __asm__ __volatile__("sync"); __asm__ __volatile__("isync"); /* write memory location injecting errors */ ppcDWstore((u32 *) i, pattern); __asm__ __volatile__("sync"); /* disable injects */ ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN; __asm__ __volatile__("sync"); __asm__ __volatile__("isync"); /* read data, this generates ECC error */ ppcDWload((u32 *) i, ret); __asm__ __volatile__("sync"); /* re-initialize memory, double word write the location again, * generates new ECC code this time */ ppcDWstore((u32 *) i, writeback); __asm__ __volatile__("sync"); } enable_interrupts(); return 0; } if (strcmp(argv[1], "testword") == 0) { addr = (u64 *) simple_strtoul(argv[2], NULL, 16); count = simple_strtoul(argv[3], NULL, 16); if ((u32) addr % 8) { printf("Address not alligned on " "double word boundary\n"); return 1; } disable_interrupts(); for (i = addr; i < addr + count; i++) { /* enable injects */ ddr->ecc_err_inject |= ECC_ERR_INJECT_EIEN; __asm__ __volatile__("sync"); __asm__ __volatile__("isync"); /* write memory location injecting errors */ *(u32 *) i = 0xfedcba98UL; __asm__ __volatile__("sync"); /* sub double word write, * bus will read-modify-write, * generates ECC error */ *((u32 *) i + 1) = 0x76543210UL; __asm__ __volatile__("sync"); /* disable injects */ ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN; __asm__ __volatile__("sync"); __asm__ __volatile__("isync"); /* re-initialize memory, * double word write the location again, * generates new ECC code this time */ ppcDWstore((u32 *) i, writeback); __asm__ __volatile__("sync"); } enable_interrupts(); return 0; } } printf("Usage:\n%s\n", cmdtp->usage); return 1; }