Hi Marek, > Subject: [PATCH] cmd: mmc: Add mmc reg read command for reading card > registers
This patch breaks ci build. +u-boot.imx exceeds file size limit: + limit: 0x5fc00 bytes + actual: 0x60c00 bytes + excess: 0x1000 bytes +make[1]: *** [Makefile:1204: u-boot.imx] Error 1 +make[1]: *** Deleting file 'u-boot.imx' +make: *** [Makefile:167: sub-make] Error 2 Regards, Peng. > > Add extension to the 'mmc' command to read out the card registers. > Currently, only the eMMC OCR/CID/CSD/EXTCSD/RCA/DSR register are > supported. A register value can either be displayed or read into an > environment variable. > > Signed-off-by: Marek Vasut <ma...@denx.de> > --- > cmd/Kconfig | 8 +++++ > cmd/mmc.c | 94 > +++++++++++++++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 102 insertions(+) > > diff --git a/cmd/Kconfig b/cmd/Kconfig > index 192b3b262f..a0cf03c911 100644 > --- a/cmd/Kconfig > +++ b/cmd/Kconfig > @@ -1104,6 +1104,14 @@ config CMD_BKOPS_ENABLE > on a eMMC device. The feature is optionally available on eMMC > devices > conforming to standard >= 4.41. > > +config CMD_MMC_REG > + bool "Enable support for reading card registers in the mmc command" > + depends on CMD_MMC > + default y > + help > + Enable the commands for reading card registers. This is useful > + mostly for debugging or extracting details from the card. > + > config CMD_MMC_RPMB > bool "Enable support for RPMB in the mmc command" > depends on SUPPORT_EMMC_RPMB > diff --git a/cmd/mmc.c b/cmd/mmc.c > index 1529a3e05d..55fbfe822e 100644 > --- a/cmd/mmc.c > +++ b/cmd/mmc.c > @@ -912,6 +912,93 @@ static int do_mmc_bkops_enable(struct cmd_tbl > *cmdtp, int flag, } #endif > > +#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; > + } else { > + off = simple_strtoul(argv[3], NULL, 10); > + if (!strcmp(argv[2], "cid")) { > + if (off > 1) > + 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 ret; > + 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 int do_mmc_boot_wp(struct cmd_tbl *cmdtp, int flag, > int argc, char * const argv[]) > { > @@ -963,6 +1050,9 @@ static struct cmd_tbl cmd_mmc[] = { #ifdef > CONFIG_CMD_BKOPS_ENABLE > U_BOOT_CMD_MKENT(bkops-enable, 2, 0, do_mmc_bkops_enable, "", > ""), #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, @@ -1037,6 > +1127,10 @@ U_BOOT_CMD( #ifdef CONFIG_CMD_BKOPS_ENABLE > "mmc bkops-enable <dev> - enable background operations handshake > on device\n" > " WARNING: This is a write-once setting.\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" > #endif > ); > > -- > 2.27.0