TPL: TM2: dfu: Add support for in-partition offset in dfu_alt_info specifiers

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>

diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c
index 403fd53..93592dd 100644 (file)
--- 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;