This extends the mmcinfo command's output to show which eMMC partitions have the enhanced attribute set. Note that the eMMC spec says that if the enhanced attribute is supported then the boot and RPMB partitions are of the enhanced type.
The output of mmcinfo becomes: Device: OMAP SD/MMC Manufacturer ID: fe OEM: 14e Name: MMC16 Tran Speed: 52000000 Rd Block Len: 512 MMC version 4.41 High Capacity: Yes Capacity: 13.8 GiB Bus Width: 4-bit User Capacity: 13.8 GiB ENH Boot Capacity: 16 MiB ENH RPMB Capacity: 128 KiB ENH GP1 Capacity: 64 MiB ENH GP2 Capacity: 64 MiB ENH --- common/cmd_mmc.c | 14 ++++++++++---- drivers/mmc/mmc.c | 3 +++ include/mmc.h | 6 ++++++ 3 files changed, 19 insertions(+), 4 deletions(-)
diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c index 1a23b28..56c8680 100644 --- a/common/cmd_mmc.c +++ b/common/cmd_mmc.c @@ -95,16 +95,22 @@ static void print_mmcinfo(struct mmc *mmc) printf("Bus Width: %d-bit\n", mmc->bus_width);
if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) { + bool has_enh = (mmc->part_support & ENHNCD_SUPPORT) != 0; puts("User Capacity: "); - print_size(mmc->capacity_user, "\n"); + print_size(mmc->capacity_user, + has_enh && (mmc->part_attr & EXT_CSD_ENH_USR) ? + " ENH\n" : "\n"); puts("Boot Capacity: "); - print_size(mmc->capacity_boot, "\n"); + print_size(mmc->capacity_boot, has_enh ? " ENH\n" : "\n"); puts("RPMB Capacity: "); - print_size(mmc->capacity_rpmb, "\n"); + print_size(mmc->capacity_rpmb, has_enh ? " ENH\n" : "\n"); for (i = 0; i < ARRAY_SIZE(mmc->capacity_gp); i++) { + bool is_enh = has_enh && + (mmc->part_attr & EXT_CSD_ENH_GP(i)); if (mmc->capacity_gp[i]) { printf("GP%i Capacity: ", i); - print_size(mmc->capacity_gp[i], "\n"); + print_size(mmc->capacity_gp[i], + is_enh ? " ENH\n" : "\n"); } } } diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 44a4feb..89f33da 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -1032,9 +1032,12 @@ static int mmc_startup(struct mmc *mmc) }
/* store the partition info of emmc */ + mmc->part_support = ext_csd[EXT_CSD_PARTITIONING_SUPPORT]; if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) || ext_csd[EXT_CSD_BOOT_MULT]) mmc->part_config = ext_csd[EXT_CSD_PART_CONF]; + if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & ENHNCD_SUPPORT) + mmc->part_attr = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE];
mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
diff --git a/include/mmc.h b/include/mmc.h index d74a190..739845f 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -197,6 +197,9 @@ #define EXT_CSD_BOOT_BUS_WIDTH_RESET(x) (x << 2) #define EXT_CSD_BOOT_BUS_WIDTH_WIDTH(x) (x)
+#define EXT_CSD_ENH_USR (1 << 0) /* user data area is enhanced */ +#define EXT_CSD_ENH_GP(x) (1 << ((x)+1)) /* GP part (x+1) is enhanced */ + #define R1_ILLEGAL_COMMAND (1 << 22) #define R1_APP_CMD (1 << 5)
@@ -220,6 +223,7 @@ #define MMCPART_NOAVAILABLE (0xff) #define PART_ACCESS_MASK (0x7) #define PART_SUPPORT (0x1) +#define ENHNCD_SUPPORT (0x2) #define PART_ENH_ATTRIB (0x1f)
/* Maximum block size for MMC */ @@ -298,6 +302,8 @@ struct mmc { uint csd[4]; uint cid[4]; ushort rca; + u8 part_support; + u8 part_attr; char part_config; char part_num; uint tran_speed;