[PATCH v2]: imx-image changes

[PATCH v2]: imx-image changes

[Sascha Hauer]

This is the second version of the imx-image changes which keep the
padding for the HABv4 case this time.

Sascha

----------------------------------------------------------------
Sascha Hauer (2):
      scripts: imx-image: Do not pad image
      scripts: imx-image: Make in-place capable

 scripts/imx/imx-image.c | 49 +++++++++++++++++++++++++------------------------
 1 file changed, 25 insertions(+), 24 deletions(-)

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[PATCH 1/2] scripts: imx-image: Do not pad image

[Sascha Hauer]

We have to pad the load size to the next 4k boundary, but only for the
HAB4 case we actually care what data is loaded in the rest of the image.
This lets the padding depend on the prepare_sign option.

Background for this patch is a new yet-to-be-introduced image loading
mechanism for i.MX. This new mechanism only loads the PBL portion of
the image to memory, and not the whole image anymore. This means that
the image in this case changes from:

i.MX header (with loadsize: whole image), PBL, payload, padding

to:

i.MX header (with loadsize: header + PBL + padding), PBL, padding, payload

With the padding between PBL and payload we are no longer able to find
the payload, so we cannot add the padding there.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 scripts/imx/imx-image.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/imx/imx-image.c b/scripts/imx/imx-image.c
index e765c1d..f0e8ca3 100644
--- a/scripts/imx/imx-image.c
+++ b/scripts/imx/imx-image.c
@@ -825,7 +825,7 @@ int main(int argc, char *argv[])
 
 	/* pad until next 4k boundary */
 	now = 4096 - now;
-	if (now) {
+	if (prepare_sign && now) {
 		memset(buf, 0x5a, now);
 
 		ret = xwrite(outfd, buf, now);
-- 
2.1.4


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[PATCH 2/2] scripts: imx-image: Make in-place capable

[Sascha Hauer]

Read in the source image completely before starting to write the output
image. This makes it possible to pass the same file as input and output.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 scripts/imx/imx-image.c | 47 ++++++++++++++++++++++++-----------------------
 1 file changed, 24 insertions(+), 23 deletions(-)

diff --git a/scripts/imx/imx-image.c b/scripts/imx/imx-image.c
index f0e8ca3..e8d9dbf 100644
--- a/scripts/imx/imx-image.c
+++ b/scripts/imx/imx-image.c
@@ -666,7 +666,8 @@ int main(int argc, char *argv[])
 	char *imagename = NULL;
 	char *outfile = NULL;
 	void *buf;
-	size_t image_size = 0, load_size;
+	size_t image_size = 0, load_size, insize;
+	void *infile;
 	struct stat s;
 	int infd, outfd;
 	int dcd_only = 0;
@@ -779,6 +780,24 @@ int main(int argc, char *argv[])
 		exit(1);
 	}
 
+	infd = open(imagename, O_RDONLY);
+	if (infd < 0) {
+		perror("open");
+		exit(1);
+	}
+
+	ret = fstat(infd, &s);
+	if (ret)
+		return ret;
+
+	insize = s.st_size;
+	infile = malloc(insize);
+	if (!infile)
+		exit(1);
+
+	xread(infd, infile, insize);
+	close(infd);
+
 	outfd = open(outfile, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
 	if (outfd < 0) {
 		perror("open");
@@ -799,32 +818,14 @@ int main(int argc, char *argv[])
 		}
 	}
 
-	infd = open(imagename, O_RDONLY);
-	if (infd < 0) {
-		perror("open");
+	ret = xwrite(outfd, infile, insize);
+	if (ret) {
+		perror("write");
 		exit(1);
 	}
 
-	while (image_size) {
-		now = image_size < 4096 ? image_size : 4096;
-
-		ret = xread(infd, buf, now);
-		if (ret) {
-			perror("read");
-			exit(1);
-		}
-
-		ret = xwrite(outfd, buf, now);
-		if (ret) {
-			perror("write");
-			exit(1);
-		}
-
-		image_size -= now;
-	}
-
 	/* pad until next 4k boundary */
-	now = 4096 - now;
+	now = 4096 - (insize % 4096);
 	if (prepare_sign && now) {
 		memset(buf, 0x5a, now);
 
-- 
2.1.4


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