diff options
| author | Marek Szyprowski | 2019-10-02 12:34:37 +0200 |
|---|---|---|
| committer | Marek Vasut | 2019-10-31 12:12:31 +0100 |
| commit | d2d8eab42118f8c25e8562495438c903893b83fd (patch) | |
| tree | 4edded55f0e45ef19003c0c83e2a7d511548f249 /drivers/dfu | |
| parent | 909338c345812bf9a57780dc09caafded237a036 (diff) | |
dfu: mmc: add support for in-partition offset
Add possibility to define a part of partition as a separate DFU entity.
This allows to have more than one items on the given partition.
The real use case for this option is TM2 board. It can use u-boot stored
as Linux kernel on the defined partition (as RAW data) and load the real
kernel from the same partition, but stored under the certain offset.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Lukasz Majewski <lukma@denx.de>
Diffstat (limited to 'drivers/dfu')
| -rw-r--r-- | drivers/dfu/dfu_mmc.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c index 403fd5351d7..5b551f6ae11 100644 --- a/drivers/dfu/dfu_mmc.c +++ b/drivers/dfu/dfu_mmc.c @@ -352,6 +352,7 @@ int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s) struct blk_desc *blk_dev = mmc_get_blk_desc(mmc); int mmcdev = second_arg; int mmcpart = third_arg; + int offset = 0; if (part_get_info(blk_dev, mmcpart, &partinfo) != 0) { pr_err("Couldn't find part #%d on mmc device #%d\n", @@ -359,9 +360,17 @@ int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s) return -ENODEV; } + /* + * Check for an extra entry at dfu_alt_info env variable + * specifying the mmc HW defined partition number + */ + if (s) + if (!strcmp(strsep(&s, " "), "offset")) + offset = simple_strtoul(s, NULL, 0); + dfu->layout = DFU_RAW_ADDR; - dfu->data.mmc.lba_start = partinfo.start; - dfu->data.mmc.lba_size = partinfo.size; + dfu->data.mmc.lba_start = partinfo.start + offset; + dfu->data.mmc.lba_size = partinfo.size-offset; dfu->data.mmc.lba_blk_size = partinfo.blksz; } else if (!strcmp(entity_type, "fat")) { dfu->layout = DFU_FS_FAT; |