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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)
all: payload
$(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
endif
$(project_dir)/kernel-image: config
echo " MAKE Kernel $(CONFIG_LINUXBOOT_KERNEL_VERSION)"
$(MAKE) -C $(kernel_dir) olddefconfig
$(MAKE) -C $(kernel_dir) -j $(CPUS)
ifeq ($(CONFIG_LINUXBOOT_ARCH),386)
cp $(kernel_dir)/arch/x86/boot/bzImage $(project_dir)/kernel-image
else ifeq ($(CONFIG_LINUXBOOT_ARCH),amd64)
cp $(kernel_dir)/arch/x86/boot/bzImage $(project_dir)/kernel-image
endif
payload: $(project_dir)/kernel-image
ifeq ($(CONFIG_LINUXBOOT_UROOT),y)
$(MAKE) -f targets/u-root.mk
endif
clean:
if [ -d "$(kernel_dir)" ]; then make -C $(kernel_dir) clean; fi
rm -f $(project_dir)/initramfs.cpio.xz
distclean:
rm -rf $(project_dir)
.PHONY: config patch payload clean distclean clone fetch all
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