96 lines
3.3 KiB
Makefile
96 lines
3.3 KiB
Makefile
## This file is part of the coreboot project.
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##
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## Copyright (C) 2017 Facebook Inc.
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## Copyright (C) 2018 9elements Cyber Security
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##
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## This program is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation; version 2 of the License.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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kernel_tarball=https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-$(CONFIG_LINUXBOOT_KERNEL_VERSION).tar.xz
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project_dir=linuxboot
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kernel_dir=$(project_dir)/kernel
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XGCCPATH?=$(PWD)/util/crossgcc/xgcc/bin
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ifeq ($(CONFIG_LINUXBOOT_ARCH),i386)
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LINUXBOOT_COMPILE?=$(XGCCPATH)/i386-linux-
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ARCH?=x86
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else ifeq ($(CONFIG_LINUXBOOT_ARCH),amd64)
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LINUXBOOT_COMPILE?=$(XGCCPATH)/x86_64-linux-
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ARCH?=x86_64
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else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
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LINUXBOOT_COMPILE?=$(XGCCPATH)/aarch64-linux-
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ARCH?=arm64
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endif
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OBJCOPY:=$(LINUXBOOT_COMPILE)objcopy
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all: kernel
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toolchain:
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if [[ ! -x "$(LINUXBOOT_COMPILE)gcc" ]]; then \
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echo "Toolchain '$(LINUXBOOT_COMPILE)*' is missing."; \
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exit 1; \
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fi
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$(kernel_dir)/.config:
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echo " WWW Download Linux $(CONFIG_LINUXBOOT_KERNEL_VERSION)"
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mkdir -p $(kernel_dir)
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ifeq ("$(wildcard $(kernel_dir)/README)","")
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curl -s $(kernel_tarball) | tar xJ -C $(kernel_dir) --strip 1
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endif
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config: $(kernel_dir)/.config
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echo " CONFIG Linux $(CONFIG_LINUXBOOT_KERNEL_VERSION)"
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ifneq ($(CONFIG_LINUXBOOT_KERNEL_CONFIGFILE),)
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cp $(CONFIG_LINUXBOOT_KERNEL_CONFIGFILE) $(kernel_dir)/.config
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else ifeq ($(CONFIG_LINUXBOOT_ARCH),i386)
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cp x86/defconfig $(kernel_dir)/.config
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else ifeq ($(CONFIG_LINUXBOOT_ARCH),amd64)
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cp x86_64/defconfig $(kernel_dir)/.config
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else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
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cp arm64/defconfig $(kernel_dir)/.config
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endif
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ifneq (,$(filter $(CONFIG_LINUXBOOT_ARCH),i386 amd64))
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$(kernel_dir)/arch/x86/boot/bzImage: config toolchain
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else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
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$(kernel_dir)/vmlinux: config toolchain
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endif
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echo " MAKE Kernel $(CONFIG_LINUXBOOT_KERNEL_VERSION)"
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$(MAKE) -C $(kernel_dir) olddefconfig CROSS_COMPILE=$(LINUXBOOT_COMPILE) ARCH=$(ARCH)
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$(MAKE) -C $(kernel_dir) -j $(CPUS) CROSS_COMPILE=$(LINUXBOOT_COMPILE) ARCH=$(ARCH)
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ifneq (,$(filter $(CONFIG_LINUXBOOT_ARCH),i386 amd64))
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$(project_dir)/bzImage: $(kernel_dir)/arch/x86/boot/bzImage
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cp $< $@
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else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
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$(project_dir)/vmlinux.bin: $(kernel_dir)/vmlinux
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$(OBJCOPY) -O binary $< $@
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$(project_dir)/target.dtb: $(PWD)/$(CONFIG_LINUXBOOT_DTB_FILE)
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cp $< $@
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$(project_dir)/vmlinux.bin.lzma: $(project_dir)/vmlinux.bin
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xz -c -k -f --format=lzma --lzma1=dict=1MiB,lc=3,lp=0,pb=3 $< > $@
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$(project_dir)/uImage: $(project_dir)/vmlinux.bin.lzma $(project_dir)/../arm64/kernel_fdt_lzma.its $(project_dir)/target.dtb
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cp $(project_dir)/../arm64/kernel_fdt_lzma.its $(project_dir)
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cp $(PWD)/$(CONFIG_LINUXBOOT_INITRAMFS) $(project_dir)/u-initramfs
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mkimage -f $(project_dir)/kernel_fdt_lzma.its $@
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endif
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ifneq (,$(filter $(CONFIG_LINUXBOOT_ARCH),i386 amd64))
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kernel: $(project_dir)/bzImage
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else ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
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kernel: $(project_dir)/uImage
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endif
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.PHONY: kernel config toolchain
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