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Add GRUB2 payload to build system

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Since a long time GRUB 2 is a viable payload alternative to SeaBIOS and
FILO. So make it easy for coreboot users to use GRUB 2 as a payload by
integrating it into coreboot’s build system, so it can be selected in
Kconfig.

As the last GRUB 2 release 2.00 is too old and has several bugs when
used as a coreboot payload only allow to build GRUB 2 master until a new
GRUB release is done. The downside is, that accidental breakage in
GRUB’s upstream does not affect coreboot users.

Currently the GRUB 2 payload is built with the default modules which
results in an uncompressed size of around 730 kB. Compressed it has a
size of 340 kB, so it should be useable with 512 kB flash ROMs.

Tested with QEMU.

Change-Id: Ie75d5a2cb230390cd5a063d5f6a5d5e3fab6b354
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4058
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Vladimir Serbinenko
2013-11-14 12:10:08 +01:00
committed by Stefan Reinauer
parent c37b05c413
commit 113a366848
4 changed files with 85 additions and 1 deletions
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43
payloads/external/GRUB2/Makefile.inc vendored Normal file
View File

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TAG-$(CONFIG_GRUB2_MASTER)=
NAME-$(CONFIG_GRUB2_MASTER)=HEAD
unexport KCONFIG_AUTOCONFIG
all: grub2
checkout:
echo " GIT GRUB2 $(NAME-y)"
test -d grub2 || \
git clone git://git.sv.gnu.org/grub.git grub2
cd grub2 && \
git checkout master && \
git pull; \
test -n "$(TAG-y)" && \
git branch -f $(NAME-y) $(TAG-y) && \
git checkout $(NAME-y) || true
config: checkout
echo " CONFIG GRUB2 $(NAME-y)"
rm -rf grub2/build
mkdir grub2/build
cd grub2 && ./autogen.sh
cd grub2/build && ../configure BUILD_CC="$(HOSTCC)" CC="$(HOSTCC)" \
TARGET_CC="$(CC)" \
TARGET_OBJCOPY="$(OBJCOPY)" TARGET_STRIP="$(STRIP)" CFLAGS=-O2 TARGET_CFLAGS=-Os --with-platform=coreboot
grub2: config
echo " MAKE GRUB2 $(NAME-y)"
$(MAKE) -C grub2/build BUILD_CC="$(HOSTCC)" CC="$(HOSTCC)" \
TARGET_CC="$(CC)" TARGET_OBJCOPY="$(OBJCOPY)" \
TARGET_STRIP="$(STRIP)" CFLAGS=-O2 TARGET_CFLAGS=-Os \
&& $(MAKE) -C grub2/build BUILD_CC="$(HOSTCC)" CC="$(HOSTCC)" \
TARGET_CC="$(CC)" TARGET_OBJCOPY="$(OBJCOPY)" TARGET_STRIP="$(STRIP)" \
CFLAGS=-O2 TARGET_CFLAGS=-Os default_payload.elf
clean:
test -d grub2 && $(MAKE) -C grub2 clean || exit 0
distclean:
rm -rf grub2
.PHONY: checkout config grub2 clean distclean