Add possibility to define a part of partition as a separate DFU entity. This allows to have more than one items on the given partiton.
The real use case for this option is TM2 board. It can use u-boot stored as Linux kernel on the defined partiton (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 --- drivers/dfu/dfu_mmc.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c index b45e6dc54c..826e70ffec 100644 --- a/drivers/dfu/dfu_mmc.c +++ b/drivers/dfu/dfu_mmc.c @@ -357,6 +357,7 @@ 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", @@ -364,9 +365,17 @@ 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;