[PATCH v7 07/26] spl: Take advantage of bl_len's power-of-twoness

[Sean Anderson]

bl_len must be a power of two, so we can use ALIGN instead of roundup and
similar tricks to avoid divisions.

Signed-off-by: Sean Anderson <seanga2 at gmail.com>
Reviewed-by: Simon Glass <sjg at chromium.org>
---

(no changes since v6)

Changes in v6:
- New

 common/spl/spl_fit.c           | 2 +-
 common/spl/spl_imx_container.c | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/common/spl/spl_fit.c b/common/spl/spl_fit.c
index 70d8d5942d9..6084ead0919 100644
--- a/common/spl/spl_fit.c
+++ b/common/spl/spl_fit.c
@@ -194,7 +194,7 @@ static int get_aligned_image_overhead(struct spl_load_info *info, int offset)
 	if (info->filename)
 		return offset & (ARCH_DMA_MINALIGN - 1);
 
-	return offset % info->bl_len;
+	return offset & (info->bl_len - 1);
 }
 
 static int get_aligned_image_size(struct spl_load_info *info, int data_size,
diff --git a/common/spl/spl_imx_container.c b/common/spl/spl_imx_container.c
index 127802f5cb7..1cc51782766 100644
--- a/common/spl/spl_imx_container.c
+++ b/common/spl/spl_imx_container.c
@@ -33,13 +33,13 @@ static struct boot_img_t *read_auth_image(struct spl_image_info *spl_image,
 	images = (struct boot_img_t *)((u8 *)container +
 				       sizeof(struct container_hdr));
 
-	if (images[image_index].offset % info->bl_len) {
+	if (!IS_ALIGNED(images[image_index].offset, info->bl_len)) {
 		printf("%s: image%d offset not aligned to %u\n",
 		       __func__, image_index, info->bl_len);
 		return NULL;
 	}
 
-	sectors = roundup(images[image_index].size, info->bl_len) /
+	sectors = ALIGN(images[image_index].size, info->bl_len) /
 		info->bl_len;
 	sector = images[image_index].offset / info->bl_len +
 		container_sector;
@@ -69,7 +69,7 @@ static int read_auth_container(struct spl_image_info *spl_image,
 	u32 sectors;
 	int i, size, ret = 0;
 
-	size = roundup(CONTAINER_HDR_ALIGNMENT, info->bl_len);
+	size = ALIGN(CONTAINER_HDR_ALIGNMENT, info->bl_len);
 	sectors = size / info->bl_len;
 
 	/*
@@ -103,7 +103,7 @@ static int read_auth_container(struct spl_image_info *spl_image,
 	debug("Container length %u\n", length);
 
 	if (length > CONTAINER_HDR_ALIGNMENT) {
-		size = roundup(length, info->bl_len);
+		size = ALIGN(length, info->bl_len);
 		sectors = size / info->bl_len;
 
 		free(container);
-- 
2.37.1