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| author | Philip Rakity <prakity@marvell.com> | 2011-03-19 14:10:33 -0400 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-05-24 20:59:13 -0400 |
| commit | 41e2a4893566ced3c46af15df5b727326881e47d (patch) | |
| tree | 62263d47bf1f034857e8138095af724aa61c53bb | |
| parent | 7c21738efd0b5e8c2a9ac2440e7ffbf432d6f239 (diff) | |
| download | linux-3.10-41e2a4893566ced3c46af15df5b727326881e47d.tar.gz linux-3.10-41e2a4893566ced3c46af15df5b727326881e47d.tar.bz2 linux-3.10-41e2a4893566ced3c46af15df5b727326881e47d.zip | |
mmc: Ensure linux starts in eMMC user partition
uBoot sometimes leaves eMMC pointing to the private boot partition.
Ensure we always start looking at the user partition.
Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Bruce Clemens <bpclemens@marvell.com>
Signed-off-by: Mark F. Brown <markb@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
| -rw-r--r-- | drivers/mmc/core/mmc.c | 10 | ||||
| -rw-r--r-- | include/linux/mmc/card.h | 1 | ||||
| -rw-r--r-- | include/linux/mmc/mmc.h | 1 |
3 files changed, 12 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 772d0d0a541..5c611a6e008 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -288,6 +288,7 @@ static int mmc_read_ext_csd(struct mmc_card *card) if (card->ext_csd.rev >= 3) { u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; + card->ext_csd.bootconfig = ext_csd[EXT_CSD_BOOT_CONFIG]; /* Sleep / awake timeout in 100ns units */ if (sa_shift > 0 && sa_shift <= 0x17) @@ -568,6 +569,15 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, } /* + * Ensure eMMC user default partition is enabled + */ + if (card->ext_csd.bootconfig & 0x7) { + card->ext_csd.bootconfig &= ~0x7; + mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_CONFIG, + card->ext_csd.bootconfig); + } + + /* * Activate high speed (if supported) */ if ((card->ext_csd.hs_max_dtr != 0) && diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index adb4888248b..557b7326339 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -45,6 +45,7 @@ struct mmc_ext_csd { u8 rev; u8 erase_group_def; u8 sec_feature_support; + u8 bootconfig; unsigned int sa_timeout; /* Units: 100ns */ unsigned int hs_max_dtr; unsigned int sectors; diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 264ba5451e3..b5ec88fd135 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -256,6 +256,7 @@ struct _mmc_csd { #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ #define EXT_CSD_PARTITION_SUPPORT 160 /* RO */ #define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */ +#define EXT_CSD_BOOT_CONFIG 179 /* R/W */ #define EXT_CSD_ERASED_MEM_CONT 181 /* RO */ #define EXT_CSD_BUS_WIDTH 183 /* R/W */ #define EXT_CSD_HS_TIMING 185 /* R/W */ |