diff options
Diffstat (limited to 'cmd/mmc.c')
| -rw-r--r-- | cmd/mmc.c | 96 |
1 files changed, 96 insertions, 0 deletions
@@ -1110,6 +1110,93 @@ static int do_mmc_boot_wp(struct cmd_tbl *cmdtp, int flag, return CMD_RET_SUCCESS; } +#if CONFIG_IS_ENABLED(CMD_MMC_REG) +static int do_mmc_reg(struct cmd_tbl *cmdtp, int flag, + int argc, char *const argv[]) +{ + ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); + struct mmc *mmc; + int i, ret; + u32 off; + + if (argc < 3 || argc > 5) + return CMD_RET_USAGE; + + mmc = find_mmc_device(curr_device); + if (!mmc) { + printf("no mmc device at slot %x\n", curr_device); + return CMD_RET_FAILURE; + } + + if (IS_SD(mmc)) { + printf("SD registers are not supported\n"); + return CMD_RET_FAILURE; + } + + off = simple_strtoul(argv[3], NULL, 10); + if (!strcmp(argv[2], "cid")) { + if (off > 3) + return CMD_RET_USAGE; + printf("CID[%i]: 0x%08x\n", off, mmc->cid[off]); + if (argv[4]) + env_set_hex(argv[4], mmc->cid[off]); + return CMD_RET_SUCCESS; + } + if (!strcmp(argv[2], "csd")) { + if (off > 3) + return CMD_RET_USAGE; + printf("CSD[%i]: 0x%08x\n", off, mmc->csd[off]); + if (argv[4]) + env_set_hex(argv[4], mmc->csd[off]); + return CMD_RET_SUCCESS; + } + if (!strcmp(argv[2], "dsr")) { + printf("DSR: 0x%08x\n", mmc->dsr); + if (argv[4]) + env_set_hex(argv[4], mmc->dsr); + return CMD_RET_SUCCESS; + } + if (!strcmp(argv[2], "ocr")) { + printf("OCR: 0x%08x\n", mmc->ocr); + if (argv[4]) + env_set_hex(argv[4], mmc->ocr); + return CMD_RET_SUCCESS; + } + if (!strcmp(argv[2], "rca")) { + printf("RCA: 0x%08x\n", mmc->rca); + if (argv[4]) + env_set_hex(argv[4], mmc->rca); + return CMD_RET_SUCCESS; + } + if (!strcmp(argv[2], "extcsd") && + mmc->version >= MMC_VERSION_4_41) { + ret = mmc_send_ext_csd(mmc, ext_csd); + if (ret) + return CMD_RET_FAILURE; + if (!strcmp(argv[3], "all")) { + /* Dump the entire register */ + printf("EXT_CSD:"); + for (i = 0; i < MMC_MAX_BLOCK_LEN; i++) { + if (!(i % 10)) + printf("\n%03i: ", i); + printf(" %02x", ext_csd[i]); + } + printf("\n"); + return CMD_RET_SUCCESS; + } + off = simple_strtoul(argv[3], NULL, 10); + if (off > 512) + return CMD_RET_USAGE; + printf("EXT_CSD[%i]: 0x%02x\n", off, ext_csd[off]); + if (argv[4]) + env_set_hex(argv[4], ext_csd[off]); + return CMD_RET_SUCCESS; + } + + return CMD_RET_FAILURE; +} +#endif + static struct cmd_tbl cmd_mmc[] = { U_BOOT_CMD_MKENT(info, 1, 0, do_mmcinfo, "", ""), U_BOOT_CMD_MKENT(read, 4, 1, do_mmc_read, "", ""), @@ -1142,6 +1229,9 @@ static struct cmd_tbl cmd_mmc[] = { U_BOOT_CMD_MKENT(bkops-enable, 2, 0, do_mmc_bkops_enable, "", ""), U_BOOT_CMD_MKENT(bkops, 4, 0, do_mmc_bkops, "", ""), #endif +#if CONFIG_IS_ENABLED(CMD_MMC_REG) + U_BOOT_CMD_MKENT(reg, 5, 0, do_mmc_reg, "", ""), +#endif }; static int do_mmcops(struct cmd_tbl *cmdtp, int flag, int argc, @@ -1230,6 +1320,12 @@ U_BOOT_CMD( "mmc bkops <dev> [auto|manual] [enable|disable]\n" " - configure background operations handshake on device\n" #endif +#if CONFIG_IS_ENABLED(CMD_MMC_REG) + "mmc reg read <reg> <offset> [env] - read card register <reg> offset <offset>\n" + " (optionally into [env] variable)\n" + " - reg: cid/csd/dsr/ocr/rca/extcsd\n" + " - offset: for cid/csd [0..3], for extcsd [0..511,all]\n" +#endif ); /* Old command kept for compatibility. Same as 'mmc info' */ |