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authorPatrick Georgi <pgeorgi@google.com>2015-04-17 14:32:34 +0200
committerPatrick Georgi <pgeorgi@google.com>2015-04-20 19:49:36 +0200
commitf21b657f27965beacd2a3134aafbf66d4db60930 (patch)
tree9031b419907b2659bd0e2eff3434b4a9df1541bf /Makefile.inc
parent01368ed5edca94582185b603350f8e70f9b16f45 (diff)
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build system: improve portability by not relying on extraordinary dd options
Change-Id: Ibc7fe38ae11e9d477f85fdcf760b27abc6013f94 Signed-off-by: Patrick Georgi <pgeorgi@google.com> Reviewed-on: http://review.coreboot.org/9791 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'Makefile.inc')
-rw-r--r--Makefile.inc2
1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile.inc b/Makefile.inc
index 204e5185a7af..9ef29d6c0f4d 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -560,7 +560,7 @@ $(obj)/coreboot.rom: $(obj)/coreboot.pre $(objcbfs)/ramstage.elf $(CBFSTOOL) $(c
@printf " CBFS $(subst $(obj)/,,$(@))\n"
# The full ROM may be larger than the CBFS part, so create an empty
# file (filled with \377 = 0xff) and copy the CBFS image over it.
- tr '\000' '\377' < /dev/zero 2> /dev/null | dd of=$@.tmp bs=8192 iflag=fullblock count=$$(($(CONFIG_ROM_SIZE) / 8192)) 2> /dev/null
+ dd if=/dev/zero bs=$(CONFIG_ROM_SIZE) count=1 | tr '\000' '\377' > $@.tmp
dd if=$(obj)/coreboot.pre of=$@.tmp bs=8192 conv=notrunc 2> /dev/null
$(CBFSTOOL) $@.tmp add-stage -f $(objcbfs)/ramstage.elf -n $(CONFIG_CBFS_PREFIX)/ramstage -c $(CBFS_COMPRESS_FLAG)
ifeq ($(CONFIG_PAYLOAD_NONE),y)