From: Oliver Metz Date: Tue, 1 Oct 2013 18:32:07 +0000 (+0200) Subject: mmc: Fix erase_grp_size for partitioned card X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=1937e5aa3b0ec0767a36580db654ef8918c09b84;p=u-boot.git mmc: Fix erase_grp_size for partitioned card EXT_CSD_ERASE_GROUP_DEF is lost every time after a reset or power off. Set it if device has enhanced partitions. Signed-off-by: Oliver Metz Acked-by: Pantelis Antoniou --- diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 84dae4d8bd..e1461a98dd 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -960,15 +960,24 @@ static int mmc_startup(struct mmc *mmc) } /* - * Check whether GROUP_DEF is set, if yes, read out - * group size from ext_csd directly, or calculate - * the group size from the csd value. + * Host needs to enable ERASE_GRP_DEF bit if device is + * partitioned. This bit will be lost every time after a reset + * or power off. This will affect erase size. */ - if (ext_csd[EXT_CSD_ERASE_GROUP_DEF]) { + if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) && + (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) { + err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_ERASE_GROUP_DEF, 1); + + if (err) + return err; + + /* Read out group size from ext_csd */ mmc->erase_grp_size = ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * MMC_MAX_BLOCK_LEN * 1024; } else { + /* Calculate the group size from the csd value. */ int erase_gsz, erase_gmul; erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10; erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5; diff --git a/include/mmc.h b/include/mmc.h index 214b9edc8d..cb558da63d 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -148,6 +148,7 @@ * EXT_CSD fields */ #define EXT_CSD_GP_SIZE_MULT 143 /* R/W */ +#define EXT_CSD_PARTITIONS_ATTRIBUTE 156 /* R/W */ #define EXT_CSD_PARTITIONING_SUPPORT 160 /* RO */ #define EXT_CSD_RPMB_MULT 168 /* RO */ #define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */ @@ -210,6 +211,7 @@ #define MMCPART_NOAVAILABLE (0xff) #define PART_ACCESS_MASK (0x7) #define PART_SUPPORT (0x1) +#define PART_ENH_ATTRIB (0x1f) /* Maximum block size for MMC */ #define MMC_MAX_BLOCK_LEN 512