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vboot: use cbfstool truncate 

Instead of a shell based parser for cbfstool print -k output.

BUG=b:65853903
BRANCH=none
TEST=`abuild -x -t GOOGLE_KEVIN -p none` creates a valid-looking image.

Change-Id: I33b7e1c483a69e66e82541c09582be2a71356a10
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/21609
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
Patrick Georgi 2017-09-20 12:01:28 +02:00
parent 12631a4d1d
commit bf375e3943
1 changed files with 4 additions and 10 deletions
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14
src/vboot/Makefile.inc
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@ -239,17 +239,11 @@ endif
# in the keyblock, and coreboot's vboot code clips the region_device to match,
# which prevents any potential extension attacks.
$(obj)/FW_MAIN_%.bin: $(obj)/coreboot.rom
$(CBFSTOOL) $< truncate -r $(basename $(notdir $@)) > $@.tmp.size
$(CBFSTOOL) $< read -r $(basename $(notdir $@)) -f $@.tmp
$(CBFSTOOL) $(obj)/coreboot.rom print -k -r $(basename $(notdir $@)) | \
tail -1 | \
sed "s,^(empty)[[:space:]]\(0x[0-9a-f]*\)\tnull\t.*$$,\1," \
> $@.tmp.size
if [ -n "$$(cat $@.tmp.size)" ] && [ $$( printf "%d" $$(cat $@.tmp.size)) -gt 0 ]; then \
head -c $$( printf "%d" $$(cat $@.tmp.size)) $@.tmp > $@.tmp2 && \
mv $@.tmp2 $@; \
else \
mv $@.tmp $@; \
fi
head -c $$( printf "%d" $$(cat $@.tmp.size)) $@.tmp > $@.tmp2
mv $@.tmp2 $@
rm -f $@.tmp $@.tmp.size
$(obj)/VBLOCK_%.bin: $(obj)/FW_MAIN_%.bin $(FUTILITY)
$(FUTILITY) vbutil_firmware \