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u-boot/arch/powerpc/cpu/mpc83xx/ecc.c
Robert P. J. Day d7b4ca2b6f powerpc: Various typo fixes under arch/powerpc/cpu/mpc83xx 
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
2016-01-08 10:15:43 -05:00

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/*
* Copyright (C) 2007-2011 Freescale Semiconductor, Inc.
*
* Dave Liu <daveliu@freescale.com>
* based on the contribution of Marian Balakowicz <m8@semihalf.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <mpc83xx.h>
#include <command.h>
#if defined(CONFIG_DDR_ECC) && defined(CONFIG_DDR_ECC_CMD)
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(cmd_tbl_t * 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 = 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 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;
__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 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;
__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;
}
}
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 <val> - set Single-Bit Error counter\n"
"ecc sbethr <val> - set Single-Bit Threshold\n"
"ecc errdisable <flag> - 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 <flag> - 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 <hi> - set Memory Data Path Error Injection Mask High\n"
"ecc injectdatalo <lo> - set Memory Data Path Error Injection Mask Low\n"
"ecc injectecc <ecc> - set ECC Error Injection Mask\n"
"ecc inject <en|dis> - enable/disable error injection\n"
"ecc mirror <en|dis> - enable/disable mirror byte\n"
"ecc testdw <addr> <cnt> - 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 <addr> <cnt> - 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");
#endif
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