kumquat-buildroot/boot/grub2/grub2.mk
Thomas Petazzoni 8decd25477 grub2: prepare and install El Torito image
In order to support ISO9660 bootable images that rely on Grub 2, this
commit modifies thr Grub 2 makefile to generate and install an El
Torito image. Such an image is simply produced by concatenating the
cdboot.img provided by Grub 2, and the Grub 2 image generated by
Buildroot using grub-mkimage.

Since this action is so simple and cost-free, we don't bother adding a
Grub 2 sub-option for that, and simply generate the El Torito image
unconditionally.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-14 23:24:59 +02:00

95 lines
3.0 KiB
Makefile

################################################################################
#
# grub2
#
################################################################################
GRUB2_VERSION = 2.00
GRUB2_SITE = $(BR2_GNU_MIRROR)/grub
GRUB2_SOURCE = grub-$(GRUB2_VERSION).tar.xz
GRUB2_LICENSE = GPLv3+
GRUB2_LICENSE_FILES = COPYING
GRUB2_DEPENDENCIES = host-bison host-flex
GRUB2_BUILTIN_MODULES = $(call qstrip,$(BR2_TARGET_GRUB2_BUILTIN_MODULES))
GRUB2_BUILTIN_CONFIG = $(call qstrip,$(BR2_TARGET_GRUB2_BUILTIN_CONFIG))
GRUB2_BOOT_PARTITION = $(call qstrip,$(BR2_TARGET_GRUB2_BOOT_PARTITION))
ifeq ($(BR2_TARGET_GRUB2_I386_PC),y)
GRUB2_IMAGE = $(BINARIES_DIR)/grub.img
GRUB2_CFG = $(TARGET_DIR)/boot/grub/grub.cfg
GRUB2_PREFIX = ($(GRUB2_BOOT_PARTITION))/boot/grub
GRUB2_TUPLE = i386-pc
GRUB2_TARGET = i386
GRUB2_PLATFORM = pc
else ifeq ($(BR2_TARGET_GRUB2_I386_EFI),y)
GRUB2_IMAGE = $(BINARIES_DIR)/efi-part/EFI/BOOT/bootia32.efi
GRUB2_CFG = $(BINARIES_DIR)/efi-part/EFI/BOOT/grub.cfg
GRUB2_PREFIX = /EFI/BOOT
GRUB2_TUPLE = i386-efi
GRUB2_TARGET = i386
GRUB2_PLATFORM = efi
else ifeq ($(BR2_TARGET_GRUB2_X86_64_EFI),y)
GRUB2_IMAGE = $(BINARIES_DIR)/efi-part/EFI/BOOT/bootx64.efi
GRUB2_CFG = $(BINARIES_DIR)/efi-part/EFI/BOOT/grub.cfg
GRUB2_PREFIX = /EFI/BOOT
GRUB2_TUPLE = x86_64-efi
GRUB2_TARGET = x86_64
GRUB2_PLATFORM = efi
endif
# Grub2 is kind of special: it considers CC, LD and so on to be the
# tools to build the native tools (i.e to be executed on the build
# machine), and uses TARGET_CC, TARGET_CFLAGS, TARGET_CPPFLAGS to
# build the bootloader itself.
GRUB2_CONF_ENV = \
$(HOST_CONFIGURE_OPTS) \
CPP="$(HOSTCC) -E" \
TARGET_CC="$(TARGET_CC)" \
TARGET_CFLAGS="$(TARGET_CFLAGS)" \
TARGET_CPPFLAGS="$(TARGET_CPPFLAGS)"
GRUB2_CONF_OPTS = \
--target=$(GRUB2_TARGET) \
--with-platform=$(GRUB2_PLATFORM) \
--disable-grub-mkfont \
--enable-efiemu=no \
--enable-liblzma=no \
--enable-device-mapper=no \
--enable-libzfs=no \
--disable-werror
# We don't want all the native tools and Grub2 modules to be installed
# in the target. So we in fact install everything into the host
# directory, and the image generation process (below) will use the
# grub-mkimage tool and Grub2 modules from the host directory.
GRUB2_INSTALL_TARGET_OPTS = DESTDIR=$(HOST_DIR) install
define GRUB2_IMAGE_INSTALLATION
mkdir -p $(dir $(GRUB2_IMAGE))
$(HOST_DIR)/usr/bin/grub-mkimage \
-d $(HOST_DIR)/usr/lib/grub/$(GRUB2_TUPLE) \
-O $(GRUB2_TUPLE) \
-o $(GRUB2_IMAGE) \
-p "$(GRUB2_PREFIX)" \
$(if $(GRUB2_BUILTIN_CONFIG),-c $(GRUB2_BUILTIN_CONFIG)) \
$(GRUB2_BUILTIN_MODULES)
cat $(HOST_DIR)/usr/lib/grub/$(GRUB2_TUPLE)/cdboot.img $(GRUB2_IMAGE) > \
$(BINARIES_DIR)/grub-eltorito.img
mkdir -p $(dir $(GRUB2_CFG))
$(INSTALL) -D -m 0644 boot/grub2/grub.cfg $(GRUB2_CFG)
endef
GRUB2_POST_INSTALL_TARGET_HOOKS += GRUB2_IMAGE_INSTALLATION
ifeq ($(GRUB2_PLATFORM),efi)
define GRUB2_EFI_STARTUP_NSH
echo $(notdir $(GRUB2_IMAGE)) > \
$(BINARIES_DIR)/efi-part/startup.nsh
endef
GRUB2_POST_INSTALL_TARGET_HOOKS += GRUB2_EFI_STARTUP_NSH
endif
$(eval $(autotools-package))