128 lines
4.0 KiB
Makefile
128 lines
4.0 KiB
Makefile
##
|
|
## Copyright (C) 2017 Facebook Inc.
|
|
## Copyright (C) 2018 9elements Cyber Security
|
|
##
|
|
## SPDX-License-Identifier: GPL-2.0-only
|
|
|
|
SHELL := /bin/bash
|
|
|
|
ARCH-$(CONFIG_LINUXBOOT_X86_64)=x86_64
|
|
ARCH-$(CONFIG_LINUXBOOT_X86)=x86
|
|
ARCH-$(CONFIG_LINUXBOOT_ARM64)=arm64
|
|
|
|
TAG-$(CONFIG_LINUXBOOT_KERNEL_MAINLINE)=mainline
|
|
TAG-$(CONFIG_LINUXBOOT_KERNEL_STABLE)=stable
|
|
TAG-$(CONFIG_LINUXBOOT_KERNEL_LONGTERM)=longterm
|
|
|
|
pwd:=$(shell pwd)
|
|
top:=../../..
|
|
project_dir=linuxboot
|
|
tarball_dir:=$(project_dir)/tarball
|
|
decompress_flag=.done
|
|
|
|
OBJCOPY:=$(LINUXBOOT_CROSS_COMPILE)objcopy
|
|
KERNEL_MAKE_FLAGS = \
|
|
ARCH=$(ARCH-y)
|
|
|
|
ifeq ($(CONFIG_LINUXBOOT_KERNEL_CUSTOM),y)
|
|
kernel_version:=$(CONFIG_LINUXBOOT_KERNEL_CUSTOM_VERSION)
|
|
else
|
|
kernel_version:=$(shell curl -sS -k https://www.kernel.org/feeds/kdist.xml | \
|
|
sed -n -e 's@.*<guid isPermaLink="false">\(.*\)</guid>.*@\1@p' | \
|
|
awk -F ',' '/$(TAG-y)/{ print $$3 }' | \
|
|
head -n 1)
|
|
endif
|
|
|
|
kernel_dir=$(project_dir)/kernel-$(subst .,_,$(kernel_version))
|
|
kernel_tarball=linux-$(kernel_version).tar
|
|
kernel_mirror=https://mirrors.edge.kernel.org/pub/linux/kernel
|
|
|
|
ifeq ($(findstring x2.6.,x$(kernel_version)),x2.6.)
|
|
kernel_mirror_path := $(kernel_mirror)/v2.6
|
|
else ifeq ($(findstring x3.,x$(kernel_version)),x3.)
|
|
kernel_mirror_path := $(kernel_mirror)/v3.x
|
|
else ifeq ($(findstring x4.,x$(kernel_version)),x4.)
|
|
kernel_mirror_path := $(kernel_mirror)/v4.x
|
|
else ifeq ($(findstring x5.,x$(kernel_version)),x5.)
|
|
kernel_mirror_path := $(kernel_mirror)/v5.x
|
|
endif
|
|
|
|
all: kernel
|
|
|
|
lookup:
|
|
ifeq ($(kernel_version),)
|
|
$(error kernel version lookup failed for $(TAG-y) release)
|
|
endif
|
|
@echo " WWW Kernel [$(TAG-y)] $(kernel_version)"
|
|
|
|
fetch:
|
|
ifneq ($(shell [[ -d "$(kernel_dir)" && -f "$(kernel_dir)/$(decompress_flag)" ]];echo $$?),0)
|
|
mkdir -p $(tarball_dir)
|
|
if [[ ! -f $(tarball_dir)/$(kernel_tarball).xz && ! -f $(tarball_dir)/$(kernel_tarball).xz ]]; then \
|
|
echo " WWW $(kernel_tarball).xz"; \
|
|
cd $(tarball_dir); \
|
|
curl -OLSs "$(kernel_mirror_path)/$(kernel_tarball).xz"; \
|
|
cd $(pwd); \
|
|
fi
|
|
endif
|
|
|
|
unpack: fetch
|
|
if [[ -d "$(kernel_dir)" && ! -f "$(kernel_dir)/$(decompress_flag)" ]]; then \
|
|
rm -rf $(kernel_dir); \
|
|
fi
|
|
if [[ ! -d "$(kernel_dir)" ]]; then \
|
|
mkdir $(kernel_dir); \
|
|
echo " XZ $(kernel_tarball).xz"; \
|
|
tar xJf $(tarball_dir)/$(kernel_tarball).xz --strip 1 -C $(kernel_dir); \
|
|
fi
|
|
touch $(kernel_dir)/$(decompress_flag)
|
|
|
|
$(kernel_dir)/.config: unpack
|
|
@echo " CONFIG Linux $(kernel_version)"
|
|
ifeq ($(CONFIG_LINUXBOOT_KERNEL_CUSTOM_CONFIG),y)
|
|
cp $(CONFIG_LINUXBOOT_KERNEL_CONFIGFILE) $(kernel_dir)/.config
|
|
else
|
|
cp $(ARCH-y)/defconfig $(kernel_dir)/.config
|
|
endif
|
|
$(MAKE) -C $(kernel_dir) $(KERNEL_MAKE_FLAGS) olddefconfig
|
|
|
|
build: $(kernel_dir)/.config
|
|
@echo " MAKE Linux $(kernel_version)"
|
|
ifeq ($(CONFIG_LINUXBOOT_KERNEL_BZIMAGE),y)
|
|
$(MAKE) -C $(kernel_dir) $(KERNEL_MAKE_FLAGS) CROSS_COMPILE=$(LINUXBOOT_CROSS_COMPILE) bzImage
|
|
else
|
|
ifeq ($(CONFIG_LINUXBOOT_KERNEL_UIMAGE),y)
|
|
$(MAKE) -C $(kernel_dir) $(KERNEL_MAKE_FLAGS) CROSS_COMPILE=$(LINUXBOOT_CROSS_COMPILE) vmlinux
|
|
endif
|
|
endif
|
|
|
|
ifeq ($(CONFIG_LINUXBOOT_KERNEL_BZIMAGE),y)
|
|
$(top)/$(CONFIG_LINUXBOOT_KERNEL): build
|
|
@echo " CP bzImage"
|
|
cp $(kernel_dir)/arch/x86/boot/bzImage $@
|
|
else
|
|
ifeq ($(CONFIG_LINUXBOOT_KERNEL_UIMAGE),y)
|
|
$(project_dir)/target.dtb: $(top)/$(CONFIG_LINUXBOOT_DTB_FILE)
|
|
cp $< $@
|
|
$(project_dir)/vmlinux.bin: $(kernel_dir)/vmlinux
|
|
$(OBJCOPY) -O binary $< $@
|
|
$(project_dir)/vmlinux.bin.lzma: $(project_dir)/vmlinux.bin
|
|
xz -c -k -f --format=lzma --lzma1=dict=1MiB,lc=3,lp=0,pb=3 $< > $@
|
|
$(top)/$(CONFIG_LINUXBOOT_KERNEL): build $(project_dir)/vmlinux.bin.lzma $(project_dir)/target.dtb
|
|
cp $(project_dir)/../arm64/kernel_fdt_lzma.its $(project_dir)
|
|
cp $(top)/$(CONFIG_LINUXBOOT_INITRAMFS)$(CONFIG_LINUXBOOT_INITRAMFS_SUFFIX) $(project_dir)/initramfs
|
|
mkimage -f $(project_dir)/kernel_fdt_lzma.its $@
|
|
else
|
|
$(error Kernel image format not found)
|
|
exit 1
|
|
endif
|
|
endif
|
|
|
|
ifneq ($(TAG-y),)
|
|
kernel: lookup $(top)/$(CONFIG_LINUXBOOT_KERNEL)
|
|
else
|
|
kernel: $(top)/$(CONFIG_LINUXBOOT_KERNEL)
|
|
endif
|
|
|
|
.PHONY: all kernel build unpack fetch check
|