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eMMC: add support for operations in RPMB partition

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This patch adds functions for read, write and authentication
key programming for the Replay Protected Memory Block partition
in the eMMC.

Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Signed-off-by: Pierre Aubert <p.aubert@staubli.com>
This commit is contained in:
Pierre Aubert
2014-04-24 10:30:06 +02:00
committed by Pantelis Antoniou
parent 6b2221b008
commit 91fdabc67a
4 changed files with 334 additions and 1 deletions
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10
include/mmc.h
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@@ -71,6 +71,7 @@
#define MMC_CMD_SET_BLOCKLEN 16
#define MMC_CMD_READ_SINGLE_BLOCK 17
#define MMC_CMD_READ_MULTIPLE_BLOCK 18
#define MMC_CMD_SET_BLOCK_COUNT 23
#define MMC_CMD_WRITE_SINGLE_BLOCK 24
#define MMC_CMD_WRITE_MULTIPLE_BLOCK 25
#define MMC_CMD_ERASE_GROUP_START 35
@@ -227,6 +228,7 @@
* boot partitions (2), general purpose partitions (4) in MMC v4.4.
*/
#define MMC_NUM_BOOT_PARTITION 2
#define MMC_PART_RPMB 3 /* RPMB partition number */
struct mmc_cid {
unsigned long psn;
@@ -338,7 +340,13 @@ int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access);
int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode);
/* Function to modify the RST_n_FUNCTION field of EXT_CSD */
int mmc_set_rst_n_function(struct mmc *mmc, u8 enable);
/* Functions to read / write the RPMB partition */
int mmc_rpmb_set_key(struct mmc *mmc, void *key);
int mmc_rpmb_get_counter(struct mmc *mmc, unsigned long *counter);
int mmc_rpmb_read(struct mmc *mmc, void *addr, unsigned short blk,
unsigned short cnt, unsigned char *key);
int mmc_rpmb_write(struct mmc *mmc, void *addr, unsigned short blk,
unsigned short cnt, unsigned char *key);
/**
* Start device initialization and return immediately; it does not block on
* polling OCR (operation condition register) status. Then you should call