From: Lukasz Majewski <l.majewski@samsung.com>
Date: Thu, 12 May 2016 11:21:39 +0000 (+0200)
Subject: TPL: TM2: dfu: Add support for in-partition offset in dfu_alt_info specifiers
X-Git-Tag: submit/tizen/20170414.042831~33
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ddc4fe1ba9b180b95d4efb593f0d39f65126980c;p=platform%2Fkernel%2Fu-boot.git

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 926ccbd2ef..64cce7fdd4 100644
--- a/drivers/dfu/dfu_mmc.c
+++ b/drivers/dfu/dfu_mmc.c
@@ -358,6 +358,7 @@ 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) {
 			error("Couldn't find part #%d on mmc device #%d\n",
@@ -365,9 +366,17 @@ 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;