Add support for reading PARTITION_CONFIG from console
parent
6330a3ee65
commit
06abb466fe
35
cmd/mmc.c
35
cmd/mmc.c
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@ -697,6 +697,24 @@ static int do_mmc_boot_resize(cmd_tbl_t *cmdtp, int flag,
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printf("EMMC RPMB partition Size %d MB\n", rpmbsize);
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return CMD_RET_SUCCESS;
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}
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static int do_mmc_partconf_read(struct mmc *mmc)
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{
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int err;
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u8 ack, part_num, access;
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err = mmc_get_part_conf(mmc, &ack, &part_num, &access);
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if (err)
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return CMD_RET_FAILURE;
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printf("EXT_CSD[179], PARTITION_CONFIG register:\n"
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"BOOT_ACK: %d\n"
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"BOOT_PARTITION_ENABLE: %d\n"
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"PARTITION_ACCESS: %d\n", ack, part_num, access);
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return CMD_RET_SUCCESS;
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}
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static int do_mmc_partconf(cmd_tbl_t *cmdtp, int flag,
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int argc, char * const argv[])
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{
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@ -704,13 +722,10 @@ static int do_mmc_partconf(cmd_tbl_t *cmdtp, int flag,
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struct mmc *mmc;
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u8 ack, part_num, access;
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if (argc != 5)
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if (argc != 2 && argc != 5)
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return CMD_RET_USAGE;
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dev = simple_strtoul(argv[1], NULL, 10);
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ack = simple_strtoul(argv[2], NULL, 10);
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part_num = simple_strtoul(argv[3], NULL, 10);
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access = simple_strtoul(argv[4], NULL, 10);
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mmc = init_mmc_device(dev, false);
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if (!mmc)
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@ -721,9 +736,17 @@ static int do_mmc_partconf(cmd_tbl_t *cmdtp, int flag,
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return CMD_RET_FAILURE;
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}
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if (argc == 2)
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return do_mmc_partconf_read(mmc);
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ack = simple_strtoul(argv[2], NULL, 10);
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part_num = simple_strtoul(argv[3], NULL, 10);
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access = simple_strtoul(argv[4], NULL, 10);
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/* acknowledge to be sent during boot operation */
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return mmc_set_part_conf(mmc, ack, part_num, access);
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}
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static int do_mmc_rst_func(cmd_tbl_t *cmdtp, int flag,
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int argc, char * const argv[])
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{
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@ -858,8 +881,8 @@ U_BOOT_CMD(
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" - Set the BOOT_BUS_WIDTH field of the specified device\n"
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"mmc bootpart-resize <dev> <boot part size MB> <RPMB part size MB>\n"
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" - Change sizes of boot and RPMB partitions of specified device\n"
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"mmc partconf dev boot_ack boot_partition partition_access\n"
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" - Change the bits of the PARTITION_CONFIG field of the specified device\n"
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"mmc partconf dev [boot_ack boot_partition partition_access]\n"
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" - Show or change the bits of the PARTITION_CONFIG field of the specified device\n"
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"mmc rst-function dev value\n"
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" - Change the RST_n_FUNCTION field of the specified device\n"
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" WARNING: This is a write-once field and 0 / 1 / 2 are the only valid values.\n"
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@ -1953,6 +1953,37 @@ int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
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return 0;
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}
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/*
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* Read EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
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* and returning the extracted fields BOOT_ACK, BOOT_PARTITION_ENABLE and
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* PARTITION_ACCESS.
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*/
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int mmc_get_part_conf(struct mmc *mmc, u8 *ack, u8 *part_num, u8 *access)
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{
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int err;
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u8 part_conf;
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ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
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mmc->erase_grp_size = 1;
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mmc->part_config = MMCPART_NOAVAILABLE;
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if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4))
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return CMD_RET_FAILURE;
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err = mmc_send_ext_csd(mmc, ext_csd);
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if (err)
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return err;
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part_conf = ext_csd[EXT_CSD_PART_CONF];
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*ack = EXT_CSD_EXTRACT_BOOT_ACK(part_conf);
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*part_num = EXT_CSD_EXTRACT_BOOT_PART(part_conf);
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*access = EXT_CSD_EXTRACT_PARTITION_ACCESS(part_conf);
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return CMD_RET_SUCCESS;
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}
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/*
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* Modify EXT_CSD[162] which is RST_n_FUNCTION based on the given value
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* for enable. Note that this is a write-once field for non-zero values.
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@ -222,6 +222,10 @@
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#define EXT_CSD_BOOT_PART_NUM(x) (x << 3)
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#define EXT_CSD_PARTITION_ACCESS(x) (x << 0)
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#define EXT_CSD_EXTRACT_BOOT_ACK(x) (((x) >> 6) & 1)
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#define EXT_CSD_EXTRACT_BOOT_PART(x) (((x) >> 3) & 0x7)
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#define EXT_CSD_EXTRACT_PARTITION_ACCESS(x) ((x) & 0x7)
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#define EXT_CSD_BOOT_BUS_WIDTH_MODE(x) (x << 3)
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#define EXT_CSD_BOOT_BUS_WIDTH_RESET(x) (x << 2)
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#define EXT_CSD_BOOT_BUS_WIDTH_WIDTH(x) (x)
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@ -428,6 +432,8 @@ int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
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unsigned long rpmbsize);
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/* Function to modify the PARTITION_CONFIG field of EXT_CSD */
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int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access);
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/* Function to read back the PARTITION_CONFIG field of EXT_CSD */
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int mmc_get_part_conf(struct mmc *mmc, u8 *ack, u8 *part_num, u8 *access);
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/* Function to modify the BOOT_BUS_WIDTH field of EXT_CSD */
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int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode);
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/* Function to modify the RST_n_FUNCTION field of EXT_CSD */
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