// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2007-2011 Freescale Semiconductor, Inc. * * Dave Liu * based on the contribution of Marian Balakowicz */ #include #include #include #include void ecc_print_status(void) { immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; #ifdef CONFIG_SYS_FSL_DDR2 struct ccsr_ddr __iomem *ddr = &immap->ddr; #else ddr83xx_t *ddr = &immap->ddr; #endif printf("\nECC mode: %s\n\n", (ddr->sdram_cfg & SDRAM_CFG_ECC_EN) ? "ON" : "OFF"); /* Interrupts */ printf("Memory Error Interrupt Enable:\n"); printf(" Multiple-Bit Error Interrupt Enable: %d\n", (ddr->err_int_en & ECC_ERR_INT_EN_MBEE) ? 1 : 0); printf(" Single-Bit Error Interrupt Enable: %d\n", (ddr->err_int_en & ECC_ERR_INT_EN_SBEE) ? 1 : 0); printf(" Memory Select Error Interrupt Enable: %d\n\n", (ddr->err_int_en & ECC_ERR_INT_EN_MSEE) ? 1 : 0); /* Error disable */ printf("Memory Error Disable:\n"); printf(" Multiple-Bit Error Disable: %d\n", (ddr->err_disable & ECC_ERROR_DISABLE_MBED) ? 1 : 0); printf(" Single-Bit Error Disable: %d\n", (ddr->err_disable & ECC_ERROR_DISABLE_SBED) ? 1 : 0); printf(" Memory Select Error Disable: %d\n\n", (ddr->err_disable & ECC_ERROR_DISABLE_MSED) ? 1 : 0); /* Error injection */ printf("Memory Data Path Error Injection Mask High/Low: %08x %08x\n", ddr->data_err_inject_hi, ddr->data_err_inject_lo); printf("Memory Data Path Error Injection Mask ECC:\n"); printf(" ECC Mirror Byte: %d\n", (ddr->ecc_err_inject & ECC_ERR_INJECT_EMB) ? 1 : 0); printf(" ECC Injection Enable: %d\n", (ddr->ecc_err_inject & ECC_ERR_INJECT_EIEN) ? 1 : 0); printf(" ECC Error Injection Mask: 0x%02x\n\n", ddr->ecc_err_inject & ECC_ERR_INJECT_EEIM); /* SBE counter/threshold */ printf("Memory Single-Bit Error Management (0..255):\n"); printf(" Single-Bit Error Threshold: %d\n", (ddr->err_sbe & ECC_ERROR_MAN_SBET) >> ECC_ERROR_MAN_SBET_SHIFT); printf(" Single-Bit Error Counter: %d\n\n", (ddr->err_sbe & ECC_ERROR_MAN_SBEC) >> ECC_ERROR_MAN_SBEC_SHIFT); /* Error detect */ printf("Memory Error Detect:\n"); printf(" Multiple Memory Errors: %d\n", (ddr->err_detect & ECC_ERROR_DETECT_MME) ? 1 : 0); printf(" Multiple-Bit Error: %d\n", (ddr->err_detect & ECC_ERROR_DETECT_MBE) ? 1 : 0); printf(" Single-Bit Error: %d\n", (ddr->err_detect & ECC_ERROR_DETECT_SBE) ? 1 : 0); printf(" Memory Select Error: %d\n\n", (ddr->err_detect & ECC_ERROR_DETECT_MSE) ? 1 : 0); /* Capture data */ printf("Memory Error Address Capture: 0x%08x\n", ddr->capture_address); printf("Memory Data Path Read Capture High/Low: %08x %08x\n", ddr->capture_data_hi, ddr->capture_data_lo); printf("Memory Data Path Read Capture ECC: 0x%02x\n\n", ddr->capture_ecc & CAPTURE_ECC_ECE); printf("Memory Error Attributes Capture:\n"); printf(" Data Beat Number: %d\n", (ddr->capture_attributes & ECC_CAPT_ATTR_BNUM) >> ECC_CAPT_ATTR_BNUM_SHIFT); printf(" Transaction Size: %d\n", (ddr->capture_attributes & ECC_CAPT_ATTR_TSIZ) >> ECC_CAPT_ATTR_TSIZ_SHIFT); printf(" Transaction Source: %d\n", (ddr->capture_attributes & ECC_CAPT_ATTR_TSRC) >> ECC_CAPT_ATTR_TSRC_SHIFT); printf(" Transaction Type: %d\n", (ddr->capture_attributes & ECC_CAPT_ATTR_TTYP) >> ECC_CAPT_ATTR_TTYP_SHIFT); printf(" Error Information Valid: %d\n\n", ddr->capture_attributes & ECC_CAPT_ATTR_VLD); } int do_ecc(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; #ifdef CONFIG_SYS_FSL_DDR2 struct ccsr_ddr __iomem *ddr = &immap->ddr; #else ddr83xx_t *ddr = &immap->ddr; #endif 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) return cmd_usage(cmdtp); 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 = dectoul(argv[2], NULL); 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 = dectoul(argv[2], NULL); 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; sync(); 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 = hextoul(argv[2], NULL); ddr->data_err_inject_hi = val; return 0; } else if (strcmp(argv[1], "injectdatalo") == 0) { val = hextoul(argv[2], NULL); ddr->data_err_inject_lo = val; return 0; } else if (strcmp(argv[1], "injectecc") == 0) { val = hextoul(argv[2], NULL); 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; sync(); 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 *)hextoul(argv[2], NULL); count = hextoul(argv[3], NULL); if ((u32) addr % 8) { printf("Address not aligned 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; sync(); isync(); /* write memory location injecting errors */ ppcDWstore((u32 *) i, pattern); sync(); /* disable injects */ ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN; sync(); isync(); /* read data, this generates ECC error */ ppcDWload((u32 *) i, ret); sync(); /* re-initialize memory, double word write the location again, * generates new ECC code this time */ ppcDWstore((u32 *) i, writeback); sync(); } enable_interrupts(); return 0; } if (strcmp(argv[1], "testword") == 0) { addr = (u64 *)hextoul(argv[2], NULL); count = hextoul(argv[3], NULL); if ((u32) addr % 8) { printf("Address not aligned 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; sync(); isync(); /* write memory location injecting errors */ *(u32 *) i = 0xfedcba98UL; sync(); /* sub double word write, * bus will read-modify-write, * generates ECC error */ *((u32 *) i + 1) = 0x76543210UL; sync(); /* disable injects */ ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN; sync(); isync(); /* re-initialize memory, * double word write the location again, * generates new ECC code this time */ ppcDWstore((u32 *) i, writeback); sync(); } enable_interrupts(); return 0; } } return cmd_usage(cmdtp); } U_BOOT_CMD(ecc, 4, 0, do_ecc, "support for DDR ECC features", "status - print out status info\n" "ecc captureclear - clear capture regs data\n" "ecc sbecnt - set Single-Bit Error counter\n" "ecc sbethr - set Single-Bit Threshold\n" "ecc errdisable - clear/set disable Memory Error Disable, flag:\n" " [-|+]sbe - Single-Bit Error\n" " [-|+]mbe - Multiple-Bit Error\n" " [-|+]mse - Memory Select Error\n" " [-|+]all - all errors\n" "ecc errdetectclr - clear Memory Error Detect, flag:\n" " mme - Multiple Memory Errors\n" " sbe - Single-Bit Error\n" " mbe - Multiple-Bit Error\n" " mse - Memory Select Error\n" " all - all errors\n" "ecc injectdatahi - set Memory Data Path Error Injection Mask High\n" "ecc injectdatalo - set Memory Data Path Error Injection Mask Low\n" "ecc injectecc - set ECC Error Injection Mask\n" "ecc inject - enable/disable error injection\n" "ecc mirror - enable/disable mirror byte\n" "ecc testdw - test mem region with double word access:\n" " - enables injects\n" " - writes pattern injecting errors with double word access\n" " - disables injects\n" " - reads pattern back with double word access, generates error\n" " - re-inits memory\n" "ecc testword - test mem region with word access:\n" " - enables injects\n" " - writes pattern injecting errors with word access\n" " - writes pattern with word access, generates error\n" " - disables injects\n" " - re-inits memory");