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Port MTD structures to use 64-bit byte offsets instead of sectors.

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As per the discussion on issue 221745 we will be using 64-bit byte offsets
for the MTD partition table and converting to/from sectors internally in cgpt.
Existing interfaces do not change, eg sizes are still reported in sectors, only
the on-disk representation is affected.

BRANCH=none
BUG=chromium:221745
TEST=unit tests pass

Change-Id: Id312d42783acfdabe6eb8aea11dcbd298e00a100
Reviewed-on: https://gerrit.chromium.org/gerrit/60919
Commit-Queue: Albert Chaulk <achaulk@chromium.org>
Reviewed-by: Albert Chaulk <achaulk@chromium.org>
Tested-by: Albert Chaulk <achaulk@chromium.org>
This commit is contained in:
Albert Chaulk
2013-06-25 11:30:46 -07:00
committed by ChromeBot
parent 7d401c5cd5
commit 289b604f61
7 changed files with 119 additions and 75 deletions
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21
firmware/lib/cgptlib/include/mtdlib.h
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@@ -63,10 +63,9 @@
typedef struct {
uint32_t starting_lba;
uint32_t ending_lba;
uint64_t starting_offset;
uint64_t ending_offset;
uint32_t flags;
uint32_t reserved;
} __attribute__((packed)) MtdDiskPartition;
typedef struct {
@@ -77,15 +76,15 @@ typedef struct {
*/
uint32_t crc32;
uint32_t size;
uint32_t first_lba;
uint32_t last_lba;
uint64_t first_offset;
uint64_t last_offset;
MtdDiskPartition partitions[MTD_MAX_PARTITIONS];
} __attribute__((packed)) MtdDiskLayout;
#define MTD_DRIVE_V1_SIZE (24 + 16*16)
#define MTD_DRIVE_V1_SIZE (32 + 16*20)
#define MTDENTRY_EXPECTED_SIZE (16)
#define MTDLAYOUT_EXPECTED_SIZE (24 + 16 * MTDENTRY_EXPECTED_SIZE)
#define MTDENTRY_EXPECTED_SIZE (20)
#define MTDLAYOUT_EXPECTED_SIZE (32 + 16 * MTDENTRY_EXPECTED_SIZE)
typedef struct {
@@ -135,6 +134,12 @@ void MtdSetEntryPriority(MtdDiskPartition *e, int priority);
void MtdSetEntryTries(MtdDiskPartition *e, int tries);
void MtdSetEntryType(MtdDiskPartition *e, int type);
void MtdGetPartitionSize(const MtdDiskPartition *e,
uint64_t *start, uint64_t *end, uint64_t *size);
void MtdGetPartitionSizeInSectors(const MtdDiskPartition *e, uint64_t *start,
uint64_t *end, uint64_t *size);
void MtdModified(MtdData *mtd);
int MtdGptInit(MtdData *mtd);
int MtdIsPartitionValid(const MtdDiskPartition *part);