389 lines
12 KiB
C
389 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2007-2011 Freescale Semiconductor, Inc.
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*
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* Dave Liu <daveliu@freescale.com>
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* based on the contribution of Marian Balakowicz <m8@semihalf.com>
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*/
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#include <common.h>
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#include <mpc83xx.h>
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#include <command.h>
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#if defined(CONFIG_DDR_ECC) && defined(CONFIG_DDR_ECC_CMD)
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void ecc_print_status(void)
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{
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immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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#ifdef CONFIG_SYS_FSL_DDR2
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struct ccsr_ddr __iomem *ddr = &immap->ddr;
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#else
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ddr83xx_t *ddr = &immap->ddr;
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#endif
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printf("\nECC mode: %s\n\n",
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(ddr->sdram_cfg & SDRAM_CFG_ECC_EN) ? "ON" : "OFF");
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/* Interrupts */
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printf("Memory Error Interrupt Enable:\n");
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printf(" Multiple-Bit Error Interrupt Enable: %d\n",
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(ddr->err_int_en & ECC_ERR_INT_EN_MBEE) ? 1 : 0);
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printf(" Single-Bit Error Interrupt Enable: %d\n",
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(ddr->err_int_en & ECC_ERR_INT_EN_SBEE) ? 1 : 0);
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printf(" Memory Select Error Interrupt Enable: %d\n\n",
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(ddr->err_int_en & ECC_ERR_INT_EN_MSEE) ? 1 : 0);
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/* Error disable */
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printf("Memory Error Disable:\n");
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printf(" Multiple-Bit Error Disable: %d\n",
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(ddr->err_disable & ECC_ERROR_DISABLE_MBED) ? 1 : 0);
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printf(" Single-Bit Error Disable: %d\n",
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(ddr->err_disable & ECC_ERROR_DISABLE_SBED) ? 1 : 0);
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printf(" Memory Select Error Disable: %d\n\n",
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(ddr->err_disable & ECC_ERROR_DISABLE_MSED) ? 1 : 0);
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/* Error injection */
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printf("Memory Data Path Error Injection Mask High/Low: %08x %08x\n",
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ddr->data_err_inject_hi, ddr->data_err_inject_lo);
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printf("Memory Data Path Error Injection Mask ECC:\n");
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printf(" ECC Mirror Byte: %d\n",
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(ddr->ecc_err_inject & ECC_ERR_INJECT_EMB) ? 1 : 0);
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printf(" ECC Injection Enable: %d\n",
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(ddr->ecc_err_inject & ECC_ERR_INJECT_EIEN) ? 1 : 0);
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printf(" ECC Error Injection Mask: 0x%02x\n\n",
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ddr->ecc_err_inject & ECC_ERR_INJECT_EEIM);
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/* SBE counter/threshold */
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printf("Memory Single-Bit Error Management (0..255):\n");
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printf(" Single-Bit Error Threshold: %d\n",
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(ddr->err_sbe & ECC_ERROR_MAN_SBET) >> ECC_ERROR_MAN_SBET_SHIFT);
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printf(" Single-Bit Error Counter: %d\n\n",
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(ddr->err_sbe & ECC_ERROR_MAN_SBEC) >> ECC_ERROR_MAN_SBEC_SHIFT);
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/* Error detect */
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printf("Memory Error Detect:\n");
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printf(" Multiple Memory Errors: %d\n",
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(ddr->err_detect & ECC_ERROR_DETECT_MME) ? 1 : 0);
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printf(" Multiple-Bit Error: %d\n",
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(ddr->err_detect & ECC_ERROR_DETECT_MBE) ? 1 : 0);
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printf(" Single-Bit Error: %d\n",
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(ddr->err_detect & ECC_ERROR_DETECT_SBE) ? 1 : 0);
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printf(" Memory Select Error: %d\n\n",
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(ddr->err_detect & ECC_ERROR_DETECT_MSE) ? 1 : 0);
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/* Capture data */
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printf("Memory Error Address Capture: 0x%08x\n", ddr->capture_address);
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printf("Memory Data Path Read Capture High/Low: %08x %08x\n",
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ddr->capture_data_hi, ddr->capture_data_lo);
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printf("Memory Data Path Read Capture ECC: 0x%02x\n\n",
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ddr->capture_ecc & CAPTURE_ECC_ECE);
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printf("Memory Error Attributes Capture:\n");
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printf(" Data Beat Number: %d\n",
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(ddr->capture_attributes & ECC_CAPT_ATTR_BNUM) >>
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ECC_CAPT_ATTR_BNUM_SHIFT);
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printf(" Transaction Size: %d\n",
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(ddr->capture_attributes & ECC_CAPT_ATTR_TSIZ) >>
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ECC_CAPT_ATTR_TSIZ_SHIFT);
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printf(" Transaction Source: %d\n",
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(ddr->capture_attributes & ECC_CAPT_ATTR_TSRC) >>
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ECC_CAPT_ATTR_TSRC_SHIFT);
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printf(" Transaction Type: %d\n",
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(ddr->capture_attributes & ECC_CAPT_ATTR_TTYP) >>
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ECC_CAPT_ATTR_TTYP_SHIFT);
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printf(" Error Information Valid: %d\n\n",
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ddr->capture_attributes & ECC_CAPT_ATTR_VLD);
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}
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int do_ecc(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
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{
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immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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#ifdef CONFIG_SYS_FSL_DDR2
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struct ccsr_ddr __iomem *ddr = &immap->ddr;
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#else
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ddr83xx_t *ddr = &immap->ddr;
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#endif
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volatile u32 val;
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u64 *addr;
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u32 count;
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register u64 *i;
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u32 ret[2];
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u32 pattern[2];
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u32 writeback[2];
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/* The pattern is written into memory to generate error */
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pattern[0] = 0xfedcba98UL;
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pattern[1] = 0x76543210UL;
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/* After injecting error, re-initialize the memory with the value */
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writeback[0] = 0x01234567UL;
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writeback[1] = 0x89abcdefUL;
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if (argc > 4)
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return cmd_usage(cmdtp);
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if (argc == 2) {
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if (strcmp(argv[1], "status") == 0) {
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ecc_print_status();
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return 0;
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} else if (strcmp(argv[1], "captureclear") == 0) {
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ddr->capture_address = 0;
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ddr->capture_data_hi = 0;
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ddr->capture_data_lo = 0;
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ddr->capture_ecc = 0;
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ddr->capture_attributes = 0;
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return 0;
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}
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}
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if (argc == 3) {
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if (strcmp(argv[1], "sbecnt") == 0) {
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val = simple_strtoul(argv[2], NULL, 10);
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if (val > 255) {
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printf("Incorrect Counter value, "
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"should be 0..255\n");
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return 1;
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}
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val = (val << ECC_ERROR_MAN_SBEC_SHIFT);
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val |= (ddr->err_sbe & ECC_ERROR_MAN_SBET);
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ddr->err_sbe = val;
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return 0;
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} else if (strcmp(argv[1], "sbethr") == 0) {
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val = simple_strtoul(argv[2], NULL, 10);
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if (val > 255) {
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printf("Incorrect Counter value, "
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"should be 0..255\n");
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return 1;
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}
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val = (val << ECC_ERROR_MAN_SBET_SHIFT);
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val |= (ddr->err_sbe & ECC_ERROR_MAN_SBEC);
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ddr->err_sbe = val;
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return 0;
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} else if (strcmp(argv[1], "errdisable") == 0) {
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val = ddr->err_disable;
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if (strcmp(argv[2], "+sbe") == 0) {
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val |= ECC_ERROR_DISABLE_SBED;
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} else if (strcmp(argv[2], "+mbe") == 0) {
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val |= ECC_ERROR_DISABLE_MBED;
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} else if (strcmp(argv[2], "+mse") == 0) {
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val |= ECC_ERROR_DISABLE_MSED;
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} else if (strcmp(argv[2], "+all") == 0) {
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val |= (ECC_ERROR_DISABLE_SBED |
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ECC_ERROR_DISABLE_MBED |
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ECC_ERROR_DISABLE_MSED);
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} else if (strcmp(argv[2], "-sbe") == 0) {
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val &= ~ECC_ERROR_DISABLE_SBED;
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} else if (strcmp(argv[2], "-mbe") == 0) {
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val &= ~ECC_ERROR_DISABLE_MBED;
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} else if (strcmp(argv[2], "-mse") == 0) {
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val &= ~ECC_ERROR_DISABLE_MSED;
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} else if (strcmp(argv[2], "-all") == 0) {
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val &= ~(ECC_ERROR_DISABLE_SBED |
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ECC_ERROR_DISABLE_MBED |
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ECC_ERROR_DISABLE_MSED);
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} else {
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printf("Incorrect err_disable field\n");
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return 1;
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}
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ddr->err_disable = val;
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__asm__ __volatile__("sync");
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__asm__ __volatile__("isync");
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return 0;
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} else if (strcmp(argv[1], "errdetectclr") == 0) {
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val = ddr->err_detect;
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if (strcmp(argv[2], "mme") == 0) {
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val |= ECC_ERROR_DETECT_MME;
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} else if (strcmp(argv[2], "sbe") == 0) {
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val |= ECC_ERROR_DETECT_SBE;
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} else if (strcmp(argv[2], "mbe") == 0) {
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val |= ECC_ERROR_DETECT_MBE;
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} else if (strcmp(argv[2], "mse") == 0) {
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val |= ECC_ERROR_DETECT_MSE;
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} else if (strcmp(argv[2], "all") == 0) {
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val |= (ECC_ERROR_DETECT_MME |
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ECC_ERROR_DETECT_MBE |
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ECC_ERROR_DETECT_SBE |
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ECC_ERROR_DETECT_MSE);
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} else {
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printf("Incorrect err_detect field\n");
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return 1;
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}
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ddr->err_detect = val;
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return 0;
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} else if (strcmp(argv[1], "injectdatahi") == 0) {
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val = simple_strtoul(argv[2], NULL, 16);
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ddr->data_err_inject_hi = val;
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return 0;
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} else if (strcmp(argv[1], "injectdatalo") == 0) {
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val = simple_strtoul(argv[2], NULL, 16);
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ddr->data_err_inject_lo = val;
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return 0;
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} else if (strcmp(argv[1], "injectecc") == 0) {
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val = simple_strtoul(argv[2], NULL, 16);
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if (val > 0xff) {
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printf("Incorrect ECC inject mask, "
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"should be 0x00..0xff\n");
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return 1;
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}
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val |= (ddr->ecc_err_inject & ~ECC_ERR_INJECT_EEIM);
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ddr->ecc_err_inject = val;
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return 0;
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} else if (strcmp(argv[1], "inject") == 0) {
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val = ddr->ecc_err_inject;
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if (strcmp(argv[2], "en") == 0)
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val |= ECC_ERR_INJECT_EIEN;
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else if (strcmp(argv[2], "dis") == 0)
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val &= ~ECC_ERR_INJECT_EIEN;
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else
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printf("Incorrect command\n");
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ddr->ecc_err_inject = val;
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__asm__ __volatile__("sync");
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__asm__ __volatile__("isync");
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return 0;
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} else if (strcmp(argv[1], "mirror") == 0) {
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val = ddr->ecc_err_inject;
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if (strcmp(argv[2], "en") == 0)
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val |= ECC_ERR_INJECT_EMB;
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else if (strcmp(argv[2], "dis") == 0)
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val &= ~ECC_ERR_INJECT_EMB;
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else
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printf("Incorrect command\n");
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ddr->ecc_err_inject = val;
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return 0;
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}
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}
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if (argc == 4) {
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if (strcmp(argv[1], "testdw") == 0) {
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addr = (u64 *) simple_strtoul(argv[2], NULL, 16);
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count = simple_strtoul(argv[3], NULL, 16);
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if ((u32) addr % 8) {
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printf("Address not aligned on "
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"double word boundary\n");
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return 1;
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}
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disable_interrupts();
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for (i = addr; i < addr + count; i++) {
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/* enable injects */
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ddr->ecc_err_inject |= ECC_ERR_INJECT_EIEN;
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__asm__ __volatile__("sync");
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__asm__ __volatile__("isync");
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/* write memory location injecting errors */
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ppcDWstore((u32 *) i, pattern);
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__asm__ __volatile__("sync");
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/* disable injects */
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ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN;
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__asm__ __volatile__("sync");
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__asm__ __volatile__("isync");
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/* read data, this generates ECC error */
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ppcDWload((u32 *) i, ret);
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__asm__ __volatile__("sync");
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/* re-initialize memory, double word write the location again,
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* generates new ECC code this time */
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ppcDWstore((u32 *) i, writeback);
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__asm__ __volatile__("sync");
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}
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enable_interrupts();
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return 0;
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}
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if (strcmp(argv[1], "testword") == 0) {
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addr = (u64 *) simple_strtoul(argv[2], NULL, 16);
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count = simple_strtoul(argv[3], NULL, 16);
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if ((u32) addr % 8) {
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printf("Address not aligned on "
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"double word boundary\n");
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return 1;
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}
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disable_interrupts();
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for (i = addr; i < addr + count; i++) {
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/* enable injects */
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ddr->ecc_err_inject |= ECC_ERR_INJECT_EIEN;
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__asm__ __volatile__("sync");
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__asm__ __volatile__("isync");
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/* write memory location injecting errors */
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*(u32 *) i = 0xfedcba98UL;
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__asm__ __volatile__("sync");
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/* sub double word write,
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* bus will read-modify-write,
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* generates ECC error */
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*((u32 *) i + 1) = 0x76543210UL;
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__asm__ __volatile__("sync");
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/* disable injects */
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ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN;
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__asm__ __volatile__("sync");
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__asm__ __volatile__("isync");
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/* re-initialize memory,
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* double word write the location again,
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* generates new ECC code this time */
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ppcDWstore((u32 *) i, writeback);
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__asm__ __volatile__("sync");
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}
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enable_interrupts();
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return 0;
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}
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}
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return cmd_usage(cmdtp);
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}
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U_BOOT_CMD(ecc, 4, 0, do_ecc,
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"support for DDR ECC features",
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"status - print out status info\n"
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"ecc captureclear - clear capture regs data\n"
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"ecc sbecnt <val> - set Single-Bit Error counter\n"
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"ecc sbethr <val> - set Single-Bit Threshold\n"
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"ecc errdisable <flag> - clear/set disable Memory Error Disable, flag:\n"
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" [-|+]sbe - Single-Bit Error\n"
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" [-|+]mbe - Multiple-Bit Error\n"
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" [-|+]mse - Memory Select Error\n"
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" [-|+]all - all errors\n"
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"ecc errdetectclr <flag> - clear Memory Error Detect, flag:\n"
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" mme - Multiple Memory Errors\n"
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" sbe - Single-Bit Error\n"
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" mbe - Multiple-Bit Error\n"
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" mse - Memory Select Error\n"
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" all - all errors\n"
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"ecc injectdatahi <hi> - set Memory Data Path Error Injection Mask High\n"
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"ecc injectdatalo <lo> - set Memory Data Path Error Injection Mask Low\n"
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"ecc injectecc <ecc> - set ECC Error Injection Mask\n"
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"ecc inject <en|dis> - enable/disable error injection\n"
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"ecc mirror <en|dis> - enable/disable mirror byte\n"
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"ecc testdw <addr> <cnt> - test mem region with double word access:\n"
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" - enables injects\n"
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" - writes pattern injecting errors with double word access\n"
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" - disables injects\n"
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" - reads pattern back with double word access, generates error\n"
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" - re-inits memory\n"
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"ecc testword <addr> <cnt> - test mem region with word access:\n"
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" - enables injects\n"
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" - writes pattern injecting errors with word access\n"
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" - writes pattern with word access, generates error\n"
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" - disables injects\n" " - re-inits memory");
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#endif
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