diff options
| author | Stephen Warren <swarren@nvidia.com> | 2012-07-30 10:55:43 +0000 |
|---|---|---|
| committer | Tom Warren <twarren@nvidia.com> | 2012-09-07 13:54:31 -0700 |
| commit | 29159057a168fce0fb473b7771bb4f0940527213 (patch) | |
| tree | 6d4c53b1557da1fe10709f9681c346ef933656ee /include | |
| parent | 0bc069b2e46ec673daf1c17ee86099fef7252660 (diff) | |
mmc: detect boot sectors using EXT_CSD_BOOT_MULT too
Some eMMC devices contain boot partitions, but do not set the PART_SUPPORT
bit in EXT_CSD_PARTITIONING_SUPPORT. Allow partition selection on such
devices, by enabling partition switching when EXT_CSD_BOOT_MULT is set.
Note that the Linux kernel enables access to boot partitions solely based
on the value of EXT_CSD_BOOT_MULT; EXT_CSD_PARTITIONING_SUPPORT only
influences access to "general" partitions.
eMMC devices affected by this issue exist on various NVIDIA Tegra
platforms (and presumably many others too), such as Harmony (plug-in eMMC),
Seaboard, Springbank, and Whistler (plug-in eMMC).
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/mmc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/mmc.h b/include/mmc.h index 7546b4a6c8..b63b2c32a0 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -160,6 +160,7 @@ #define EXT_CSD_CARD_TYPE 196 /* RO */ #define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */ #define EXT_CSD_HC_ERASE_GRP_SIZE 224 /* RO */ +#define EXT_CSD_BOOT_MULT 226 /* RO */ /* * EXT_CSD field definitions |