diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/dfu/dfu_mmc.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c index 5e10ea7..63cc876 100644 --- a/drivers/dfu/dfu_mmc.c +++ b/drivers/dfu/dfu_mmc.c @@ -18,11 +18,29 @@ static unsigned char __aligned(CONFIG_SYS_CACHELINE_SIZE) dfu_file_buf[CONFIG_SYS_DFU_MAX_FILE_SIZE]; static long dfu_file_buf_len; +static int mmc_access_part(struct dfu_entity *dfu, struct mmc *mmc, int part) +{ + int ret; + + if (part == mmc->part_num) + return 0; + + ret = mmc_switch_part(dfu->dev_num, part); + if (ret) { + error("Cannot switch to partition %d\n", part); + return ret; + } + mmc->part_num = part; + + return 0; +} + static int mmc_block_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, long *len) { struct mmc *mmc = find_mmc_device(dfu->dev_num); u32 blk_start, blk_count, n = 0; + int ret, part_num_bkp = 0; /* * We must ensure that we work in lba_blk_size chunks, so ALIGN @@ -39,6 +57,13 @@ static int mmc_block_op(enum dfu_op op, struct dfu_entity *dfu, return -EINVAL; } + if (dfu->data.mmc.hw_partition >= 0) { + part_num_bkp = mmc->part_num; + ret = mmc_access_part(dfu, mmc, dfu->data.mmc.hw_partition); + if (ret) + return ret; + } + debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__, op == DFU_OP_READ ? "MMC READ" : "MMC WRITE", dfu->dev_num, blk_start, blk_count, buf); @@ -57,9 +82,17 @@ static int mmc_block_op(enum dfu_op op, struct dfu_entity *dfu, if (n != blk_count) { error("MMC operation failed"); + if (dfu->data.mmc.hw_partition >= 0) + mmc_access_part(dfu, mmc, part_num_bkp); return -EIO; } + if (dfu->data.mmc.hw_partition >= 0) { + ret = mmc_access_part(dfu, mmc, part_num_bkp); + if (ret) + return ret; + } + return 0; } @@ -194,6 +227,8 @@ int dfu_read_medium_mmc(struct dfu_entity *dfu, u64 offset, void *buf, * 2nd and 3rd: * lba_start and lba_size, for raw write * mmc_dev and mmc_part, for filesystems and part + * 4th (optional): + * mmcpart <num> (access to HW eMMC partitions) */ int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *s) { @@ -233,11 +268,22 @@ int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *s) return -ENODEV; } + dfu->data.mmc.hw_partition = -EINVAL; if (!strcmp(entity_type, "raw")) { dfu->layout = DFU_RAW_ADDR; dfu->data.mmc.lba_start = second_arg; dfu->data.mmc.lba_size = third_arg; dfu->data.mmc.lba_blk_size = mmc->read_bl_len; + + /* + * Check for an extra entry at dfu_alt_info env variable + * specifying the mmc HW defined partition number + */ + if (s) + if (!strcmp(strsep(&s, " "), "mmcpart")) + dfu->data.mmc.hw_partition = + simple_strtoul(s, NULL, 0); + } else if (!strcmp(entity_type, "part")) { disk_partition_t partinfo; block_dev_desc_t *blk_dev = &mmc->block_dev; |