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vendorcode/google/chromeos: zero out SHARED_DATA region

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BUG=chromium:595715
BRANCH=none
TEST=/build/$board/firmware/coreboot.rom has a zeroed out SHARED_DATA
region if it exists.

Change-Id: I0b59f1f0e2f8645000f83cb3ca7f49e4da726341
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://chromium-review.googlesource.com/417821
Commit-Ready: Patrick Georgi <pgeorgi@chromium.org>
Tested-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
This commit is contained in:
Patrick Georgi 2016-12-07 12:12:59 +01:00 • committed by chrome-bot
parent d2e3be81fa
commit e8a88bf744
1 changed files with 6 additions and 0 deletions
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6
src/vendorcode/google/chromeos/Makefile.inc
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@ -107,6 +107,12 @@ build_complete:: $(obj)/gbb.region $(obj)/fwid.region
$(CBFSTOOL) $(obj)/coreboot.rom write -u -r RW_FWID_A -i 0 -f $(obj)/fwid.region
$(CBFSTOOL) $(obj)/coreboot.rom write -u -r RW_FWID_B -i 0 -f $(obj)/fwid.region
ifneq ($(shell grep "SHARED_DATA" "$(CONFIG_FMDFILE)"),)
build_complete::
printf "\0" > $(obj)/shared_data.region
$(CBFSTOOL) $(obj)/coreboot.rom write -u -r SHARED_DATA -i 0 -f $(obj)/shared_data.region
endif
# Extract FW_MAIN_? region and minimize it if the last file is empty, so it
# doesn't contain this empty file (that can have a significant size),
# improving a lot on hash times due to a smaller amount of data loaded from