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>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 943550dfe9ea..5c69315d60cc 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -85,6 +85,7 @@ struct mmc_ext_csd {
         bool                    boot_ro_lockable;
         u8                      raw_exception_status;   /* 53 */
         u8                      raw_partition_support;  /* 160 */
+        u8                      raw_rpmb_size_mult;     /* 168 */
         u8                      raw_erased_mem_count;   /* 181 */
         u8                      raw_ext_csd_structure;  /* 194 */
         u8                      raw_card_type;          /* 196 */
@@ -206,6 +207,7 @@ struct mmc_part {
 #define MMC_BLK_DATA_AREA_MAIN  (1<<0)
 #define MMC_BLK_DATA_AREA_BOOT  (1<<1)
 #define MMC_BLK_DATA_AREA_GP    (1<<2)
+#define MMC_BLK_DATA_AREA_RPMB  (1<<3)
 };
 
 /*