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authorPatrick Georgi <pgeorgi@google.com>2017-09-19 14:39:58 +0200
committerPatrick Georgi <pgeorgi@google.com>2017-09-20 13:45:00 +0000
commit5d982d72be849a15f98bb0583b25bbcd6eb7d315 (patch)
tree5b0bc89e9b444d5fc295a9f6e275cdcf7618bffc /util/cbfstool/cbfs_image.h
parentbea2d75f3174a8fbd24be2010977f975e7a16720 (diff)
downloadcoreboot-5d982d72be849a15f98bb0583b25bbcd6eb7d315.tar.xz
util/cbfstool: Add "expand" command to make CBFS span an fmap region
vboot images come with multiple regions carrying CBFS file systems. To expedite hashing (from slow flash memory), the FW_MAIN_* regions are truncated since they typically have pretty large unused space at the end that is of no interest. For test purposes it can be useful to re-engage that space, so add a command that creates a new empty file entry covering that area (except for the last 4 bytes for the master header pointer, as usual). BUG=b:65853903 BRANCH=none TEST=`cbfstool test.bin expand -r FW_MAIN_A` creates a new empty file of the expected size on a Chrome OS firmware image. Change-Id: I160c8529ce4bfcc28685166b6d9035ade4f6f1d1 Signed-off-by: Patrick Georgi <pgeorgi@google.com> Reviewed-on: https://review.coreboot.org/21598 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'util/cbfstool/cbfs_image.h')
-rw-r--r--util/cbfstool/cbfs_image.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/util/cbfstool/cbfs_image.h b/util/cbfstool/cbfs_image.h
index 0d7877a7cc..1bd74cedd1 100644
--- a/util/cbfstool/cbfs_image.h
+++ b/util/cbfstool/cbfs_image.h
@@ -80,6 +80,10 @@ int cbfs_copy_instance(struct cbfs_image *image, struct buffer *dst);
* beginning of the image. Returns 0 on success, otherwise non-zero. */
int cbfs_compact_instance(struct cbfs_image *image);
+/* Expand a CBFS image inside an fmap region to the entire region's space.
+ Returns 0 on success, otherwise non-zero. */
+int cbfs_expand_to_region(struct buffer *region);
+
/* Releases the CBFS image. Returns 0 on success, otherwise non-zero. */
int cbfs_image_delete(struct cbfs_image *image);