[U-Boot] [PATCH] common: image: Remove FIT header update from image post-processing

[Andrew F. Davis]

After an image is selected out of a FIT blob for further processing we
run an optional, platform specific, post-processing function on this
component. This post-processing may modify the position and size of the
image, so after post-processing we update the location and size for this
image in the FIT header. This can cause problems as the position of
subsequent components in the FIT blob are only referenced by relative
position to the end of the last component. When we resize or move a
component the following components position will be calculated
incorrectly. To fix this, we do not update the FIT header but instead
only update our local understanding of the image data. This also allows
us to re-run post-processing steps if needed.

Signed-off-by: Andrew F. Davis <afd at ti.com>
Tested-by: Carlos Hernandez <ceh at ti.com>
---
 common/image-fit.c | 29 ++++++-----------------------
 1 file changed, 6 insertions(+), 23 deletions(-)

diff --git a/common/image-fit.c b/common/image-fit.c
index 77dc011..23b9c54 100644
--- a/common/image-fit.c
+++ b/common/image-fit.c
@@ -1505,12 +1505,6 @@ void fit_conf_print(const void *fit, int noffset, const char *p)
 
 static int fit_image_select(const void *fit, int rd_noffset, int verify)
 {
-#if !defined(USE_HOSTCC) && defined(CONFIG_FIT_IMAGE_POST_PROCESS)
-	const void *data;
-	size_t size;
-	int ret;
-#endif
-
 	fit_image_print(fit, rd_noffset, "   ");
 
 	if (verify) {
@@ -1522,23 +1516,6 @@ static int fit_image_select(const void *fit, int rd_noffset, int verify)
 		puts("OK\n");
 	}
 
-#if !defined(USE_HOSTCC) && defined(CONFIG_FIT_IMAGE_POST_PROCESS)
-	ret = fit_image_get_data(fit, rd_noffset, &data, &size);
-	if (ret)
-		return ret;
-
-	/* perform any post-processing on the image data */
-	board_fit_image_post_process((void **)&data, &size);
-
-	/*
-	 * update U-Boot's understanding of the "data" property start address
-	 * and size according to the performed post-processing
-	 */
-	ret = fdt_setprop((void *)fit, rd_noffset, FIT_DATA_PROP, data, size);
-	if (ret)
-		return ret;
-#endif
-
 	return 0;
 }
 
@@ -1738,6 +1715,12 @@ int fit_image_load(bootm_headers_t *images, ulong addr,
 		bootstage_error(bootstage_id + BOOTSTAGE_SUB_GET_DATA);
 		return -ENOENT;
 	}
+
+#if !defined(USE_HOSTCC) && defined(CONFIG_FIT_IMAGE_POST_PROCESS)
+	/* perform any post-processing on the image data */
+	board_fit_image_post_process((void **)&buf, &size);
+#endif
+
 	len = (ulong)size;
 
 	/* verify that image data is a proper FDT blob */
-- 
2.10.2