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|
## This file is part of the coreboot project.
##
## Copyright (C) 2017 Facebook Inc.
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; version 2 of the License.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
kernel_tarball=https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-$(CONFIG_LINUXBOOT_KERNEL_VERSION).tar.xz
project_dir=linuxboot
kernel_dir=$(project_dir)/kernel
unexport $(COREBOOT_EXPORTS)
unexport MAKEFLAGS
XGCCPATH?=$(PWD)/util/crossgcc/xgcc/bin
ifeq ($(CONFIG_LINUXBOOT_ARCH),386)
LINUXBOOT_COMPILE?=$(XGCCPATH)/i386-linux-
ARCH?=x86
else ifeq ($(CONFIG_LINUXBOOT_ARCH),amd64)
LINUXBOOT_COMPILE?=$(XGCCPATH)/x86_64-linux-
ARCH?=x86_64
else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
LINUXBOOT_COMPILE?=$(XGCCPATH)/aarch64-linux-
ARCH?=arm64
endif
OBJCOPY:=$(LINUXBOOT_COMPILE)objcopy
all: payload
toolchain:
if [[ ! -x "$(LINUXBOOT_COMPILE)gcc" ]]; then \
echo "Toolchain '$(LINUXBOOT_COMPILE)*' is missing."; \
exit 1; \
fi
$(kernel_dir)/.config:
echo " WWW Download Linux $(CONFIG_LINUXBOOT_KERNEL_VERSION)"
mkdir -p $(kernel_dir)
ifeq ("$(wildcard $(kernel_dir)/README)","")
wget -qO- $(kernel_tarball) | tar xJ -C $(kernel_dir) --strip 1
endif
config: $(kernel_dir)/.config
echo " CONFIG Linux $(CONFIG_LINUXBOOT_KERNEL_VERSION)"
ifneq ($(CONFIG_LINUXBOOT_KERNEL_CONFIGFILE),)
cp $(CONFIG_LINUXBOOT_KERNEL_CONFIGFILE) $(kernel_dir)/.config
endif
ifeq ($(CONFIG_LINUXBOOT_ARCH),386)
cp x86/defconfig $(kernel_dir)/.config
else ifeq ($(CONFIG_LINUXBOOT_ARCH),amd64)
cp x86_64/defconfig $(kernel_dir)/.config
else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
cp arm64/defconfig $(kernel_dir)/.config
endif
ifneq (,$(filter $(CONFIG_LINUXBOOT_ARCH),386 amd64))
$(kernel_dir)/arch/x86/boot/bzImage: config toolchain
else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
$(kernel_dir)/vmlinux: config toolchain
endif
echo " MAKE Kernel $(CONFIG_LINUXBOOT_KERNEL_VERSION)"
$(MAKE) -C $(kernel_dir) olddefconfig CROSS_COMPILE=$(LINUXBOOT_COMPILE) ARCH=$(ARCH)
$(MAKE) -C $(kernel_dir) -j $(CPUS) CROSS_COMPILE=$(LINUXBOOT_COMPILE) ARCH=$(ARCH)
ifneq (,$(filter $(CONFIG_LINUXBOOT_ARCH),386 amd64))
$(project_dir)/kernel-image: $(kernel_dir)/arch/x86/boot/bzImage
cp $< $@
else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
$(project_dir)/vmlinux.bin: $(kernel_dir)/vmlinux
$(OBJCOPY) -O binary $< $@
$(project_dir)/target.dtb: $(CONFIG_LINUXBOOT_DTB_FILE)
cp $< $@
$(project_dir)/vmlinux.bin.lzma: $(project_dir)/vmlinux.bin
xz -c -k -f --format=lzma --lzma1=dict=1MiB,lc=3,lp=0,pb=3 $< > $@
$(project_dir)/kernel-image: $(project_dir)/vmlinux.bin.lzma $(project_dir)/../arm64/kernel_fdt_lzma.its $(project_dir)/target.dtb $(project_dir)/initramfs.cpio.xz
cp $(project_dir)/../arm64/kernel_fdt_lzma.its $(project_dir)
mkimage -f $(project_dir)/kernel_fdt_lzma.its $@
endif
ifeq ($(CONFIG_LINUXBOOT_UROOT),y)
$(project_dir)/initramfs.cpio.xz:
$(MAKE) -f targets/u-root.mk
else
$(project_dir)/initramfs.cpio.xz:
echo "Building without u-root support"
endif
payload: $(project_dir)/kernel-image $(project_dir)/initramfs.cpio.xz
clean:
if [ -d "$(kernel_dir)" ]; then rm -rf $(kernel_dir); fi
rm -f $(project_dir)/initramfs.cpio.xz
distclean:
rm -rf $(project_dir)
.PHONY: config patch payload clean distclean clone fetch all toolchain
|
