diff options
| author | Loic Pallardy <loic.pallardy-ext@stericsson.com> | 2012-11-18 03:08:24 +0400 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-12-06 22:54:46 +0400 |
| commit | 090d25fe224c0933d2b261aad91532e725c1d889 (patch) | |
| tree | ac1ad802de5be2f7acc6d7552c04885ee158d80e /drivers/mmc/core | |
| parent | ed9dbb6effc3516a1211a936be9bd67c03fdf858 (diff) | |
| download | linux-090d25fe224c0933d2b261aad91532e725c1d889.tar.xz | |
mmc: core: Expose access to RPMB partition
Following JEDEC standard, if the mmc supports RPMB partition,
a new interface is created and exposed via /dev/block.
Users will be able to access RPMB partition using standard
mmc IOCTL commands.
Signed-off-by: Alex Macro <alex.macro@stericsson.com>
Signed-off-by: Loic Pallardy <loic.pallardy@stericsson.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Johan Rudholm <johan.rudholm@stericsson.com>
Acked-by: Krishna Konda <kkonda@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 8c2fa8002abb..6c5576628ef1 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -491,6 +491,17 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; + + /* + * RPMB regions are defined in multiples of 128K. + */ + card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; + if (ext_csd[EXT_CSD_RPMB_MULT]) { + mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, + EXT_CSD_PART_CONFIG_ACC_RPMB, + "rpmb", 0, false, + MMC_BLK_DATA_AREA_RPMB); + } } card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |