Bootloader of NVIDIA Tegra devices linearizes the boot0/boot1/main
partitions into a single virtual space, and thus, all partition addresses
are shifted by the size of boot0 + boot1 partitions. The offset needs to
be known in order to find the EFI entry on eMMC storage of Tegra devices.
Add raw_boot_mult field to mmc_ext_csd which allows to get size of the
boot partitions.
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
---
drivers/mmc/core/mmc.c | 2 ++
include/linux/mmc/card.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 838726b68ff3..29e58ffae379 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -418,6 +418,8 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.raw_hc_erase_grp_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
+ card->ext_csd.raw_boot_mult =
+ ext_csd[EXT_CSD_BOOT_MULT];
if (card->ext_csd.rev >= 3) {
u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG];
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 74e6c0624d27..37f975875102 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -109,6 +109,7 @@ struct mmc_ext_csd {
u8 raw_hc_erase_gap_size; /* 221 */
u8 raw_erase_timeout_mult; /* 223 */
u8 raw_hc_erase_grp_size; /* 224 */
+ u8 raw_boot_mult; /* 226 */
u8 raw_sec_trim_mult; /* 229 */
u8 raw_sec_erase_mult; /* 230 */
u8 raw_sec_feature_support;/* 231 */
--
2.32.0
