mmc: boot partition ro lock support
Enable boot partitions to be read-only locked until next power on via
a sysfs entry. There will be one sysfs entry for each boot partition:
/sys/block/mmcblkXbootY/ro_lock_until_next_power_on
Each boot partition is locked by writing 1 to its file.
Signed-off-by: Johan Rudholm <johan.rudholm@stericsson.com>
Signed-off-by: John Beckett <john.beckett@stericsson.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 6402d92..9478a6b 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -71,6 +71,8 @@
bool hpi_en; /* HPI enablebit */
bool hpi; /* HPI support bit */
unsigned int hpi_cmd; /* cmd used as HPI */
+ unsigned int boot_ro_lock; /* ro lock support */
+ bool boot_ro_lockable;
u8 raw_partition_support; /* 160 */
u8 raw_erased_mem_count; /* 181 */
u8 raw_ext_csd_structure; /* 194 */
@@ -187,6 +189,10 @@
unsigned int part_cfg; /* partition type */
char name[MAX_MMC_PART_NAME_LEN];
bool force_ro; /* to make boot parts RO by default */
+ unsigned int area_type;
+#define MMC_BLK_DATA_AREA_MAIN (1<<0)
+#define MMC_BLK_DATA_AREA_BOOT (1<<1)
+#define MMC_BLK_DATA_AREA_GP (1<<2)
};
/*
@@ -265,12 +271,14 @@
* This function fill contents in mmc_part.
*/
static inline void mmc_part_add(struct mmc_card *card, unsigned int size,
- unsigned int part_cfg, char *name, int idx, bool ro)
+ unsigned int part_cfg, char *name, int idx, bool ro,
+ int area_type)
{
card->part[card->nr_parts].size = size;
card->part[card->nr_parts].part_cfg = part_cfg;
sprintf(card->part[card->nr_parts].name, name, idx);
card->part[card->nr_parts].force_ro = ro;
+ card->part[card->nr_parts].area_type = area_type;
card->nr_parts++;
}