From 5847084f6bbd0778afb29f0574085d4210ea8cff Mon Sep 17 00:00:00 2001 From: Vagrant Cascadian Date: Thu, 16 Jun 2016 12:28:40 -0700 Subject: Respect SOURCE_DATE_EPOCH when building FIT images. Embedding timestamps in FIT images results in unreproducible builds for targets that generate a fit image, such as dra7xx_evm. This patch uses the SOURCE_DATE_EPOCH environment variable, when set, to use specified value for the date. Thanks to HW42 for debugging the issue and providing the patch: https://lists.alioth.debian.org/pipermail/reproducible-builds/Week-of-Mon-20160606/005722.html For more information about reproducible builds and the SOURCE_DATE_EPOCH specification: https://reproducible-builds.org/specs/source-date-epoch/ https://reproducible-builds.org/ Signed-off-by: Vagrant Cascadian Reviewed-by: Simon Glass --- tools/imagetool.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'tools/imagetool.h') diff --git a/tools/imagetool.h b/tools/imagetool.h index 1f2161c..6c1a9d3 100644 --- a/tools/imagetool.h +++ b/tools/imagetool.h @@ -206,6 +206,22 @@ int imagetool_save_subimage( */ int imagetool_get_filesize(struct image_tool_params *params, const char *fname); +/** + * imagetool_get_source_date() - Get timestamp for build output. + * + * Gets a timestamp for embedding it in a build output. If set + * SOURCE_DATE_EPOCH is used. Else the given fallback value is returned. Prints + * an error message if SOURCE_DATE_EPOCH contains an invalid value and returns + * 0. + * + * @params: mkimage parameters + * @fallback: timestamp to use if SOURCE_DATE_EPOCH isn't set + * @return timestamp based on SOURCE_DATE_EPOCH + */ +time_t imagetool_get_source_date( + struct image_tool_params *params, + time_t fallback); + /* * There is a c file associated with supported image type low level code * for ex. default_image.c, fit_image.c -- cgit v1.1