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Subject[PATCH 1/3] mmc: Support FFU for eMMC v5.0
Date

Add eMMC5.0 ffu ext_csd fields

Signed-off-by: Avi Shchislowski <avi.shchislowski@sandisk.com>
Signed-off-by: Alex Lemberg <alex.lemberg@sandisk.com>


diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 1eda8dd..3b86ed3 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -603,6 +603,15 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
card->ext_csd.data_sector_size = 512;
}

+ /* eMMC v5 or later */
+ if (card->ext_csd.rev >= 7) {
+ card->ext_csd.ffu_capable =
+ ((ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) == 0x1) &&
+ ((ext_csd[EXT_CSD_FW_CONFIG] & 0x1) == 0x0);
+ card->ext_csd.ffu_mode_op = ext_csd[EXT_CSD_FFU_FEATURES];
+ } else {
+ card->ext_csd.ffu_capable = false;
+ }
out:
return err;
}
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index d424b9d..dd01efe 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -81,6 +81,8 @@ struct mmc_ext_csd {
bool hpi_en; /* HPI enablebit */
bool hpi; /* HPI support bit */
unsigned int hpi_cmd; /* cmd used as HPI */
+ bool ffu_capable; /* FFU support */
+ bool ffu_mode_op; /* FFU mode operation */
bool bkops; /* background support bit */
bool bkops_en; /* background enable bit */
unsigned int data_sector_size; /* 512 bytes or 4KB */
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index 64ec963..787787b 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -272,6 +272,9 @@ struct _mmc_csd {
* EXT_CSD fields
*/

+#define EXT_CSD_FFU_STATUS 26 /* R */
+#define EXT_CSD_MODE_OPERATION_CODES 29 /* W */
+#define EXT_CSD_MODE_CONFIG 30 /* R/W */
#define EXT_CSD_FLUSH_CACHE 32 /* W */
#define EXT_CSD_CACHE_CTRL 33 /* R/W */
#define EXT_CSD_POWER_OFF_NOTIFICATION 34 /* R/W */
@@ -290,6 +293,7 @@ struct _mmc_csd {
#define EXT_CSD_SANITIZE_START 165 /* W */
#define EXT_CSD_WR_REL_PARAM 166 /* RO */
#define EXT_CSD_RPMB_MULT 168 /* RO */
+#define EXT_CSD_FW_CONFIG 169 /* R/W */
#define EXT_CSD_BOOT_WP 173 /* R/W */
#define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */
#define EXT_CSD_PART_CONFIG 179 /* R/W */
@@ -326,6 +330,11 @@ struct _mmc_csd {
#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
#define EXT_CSD_CACHE_SIZE 249 /* RO, 4 bytes */
#define EXT_CSD_PWR_CL_DDR_200_360 253 /* RO */
+#define EXT_CSD_NUM_OF_FW_SEC_PROG 302 /* RO, 4 bytes */
+#define EXT_CSD_FFU_ARG 487 /* RO, 4 bytes */
+#define EXT_CSD_OPERATION_CODE_TIMEOUT 491 /* RO */
+#define EXT_CSD_FFU_FEATURES 492 /* RO */
+#define EXT_CSD_SUPPORTED_MODE 493 /* RO */
#define EXT_CSD_TAG_UNIT_SIZE 498 /* RO */
#define EXT_CSD_DATA_TAG_SUPPORT 499 /* RO */
#define EXT_CSD_MAX_PACKED_WRITES 500 /* RO */
--
1.7.9.5


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