From: Bin Meng <bmeng@tinylab.org>
Date: Tue, 26 Sep 2023 08:43:39 +0000 (+0800)
Subject: blk: blkmap: Support mapping to device of any block size
X-Git-Url: http://git.dujemihanovic.xyz/img/static/git-favicon.png?a=commitdiff_plain;h=cf83ff3452ac76ebe882136a7722bf73ea737d3d;p=u-boot.git

blk: blkmap: Support mapping to device of any block size

At present if a device to map has a block size other than 512,
the blkmap map process just fails. There is no reason why we
can't just use the block size of the mapped device.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
---

diff --git a/drivers/block/blkmap.c b/drivers/block/blkmap.c
index f6acfa8927..149a4cac3e 100644
--- a/drivers/block/blkmap.c
+++ b/drivers/block/blkmap.c
@@ -171,11 +171,11 @@ int blkmap_map_linear(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
 
 	bd = dev_get_uclass_plat(bm->blk);
 	lbd = dev_get_uclass_plat(lblk);
-	if (lbd->blksz != bd->blksz)
-		/* We could support block size translation, but we
-		 * don't yet.
-		 */
-		return -EINVAL;
+	if (lbd->blksz != bd->blksz) {
+		/* update to match the mapped device */
+		bd->blksz = lbd->blksz;
+		bd->log2blksz = LOG2(bd->blksz);
+	}
 
 	linear = malloc(sizeof(*linear));
 	if (!linear)