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payloads/external/LinuxBoot: Clean up

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There were some issues with the current Linuxboot Makefiles.
- multithreaded compilation didn't work, because some prerequisites
  were missing
- initramfs wasn't added for x86 qemu boot.
- riscv support was incomplete

It began with separate patches, but resulted in a clean up patch, that
is hard to separate. The most important changes are the following:
- Instead of phony targets, actual files are now used as prerequisites
- riscv can now be used as target
- initramfs works now also for x86
- instead of querying the most recent version from the internet, I set a
  known working version (because I tested it) that can be customized
  and/or upgraded in the future. The reasons:
      - querying the version from the internet requires a constant
        connection to the internet even after linux kernel is already
        build (aka subsequent builds).
      - one usually wants to use a known working version, but optionally
        still have the posibillity to choose a custom one. This patch
        introduces this possibility in its most simple form.
- I removed as much ifeq statements as possible and moved that
  responsibility to Kconfig, because they tend to make the
  Makefile less readable.

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I25e757108e0dd473969fe5a192ad0733f1fe6286
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76150
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Maximilian Brune
2023-06-26 20:04:47 +02:00
committed by Lean Sheng Tan
parent 449c6d981c
commit c202be793f
11 changed files with 244 additions and 277 deletions
Download Patch File Download Diff File Expand all files Collapse all files

81
payloads/external/LinuxBoot/Makefile vendored
View File

@@ -1,62 +1,51 @@
## SPDX-License-Identifier: GPL-2.0-only
project_dir=linuxboot
unexport $(COREBOOT_EXPORTS)
all: linuxboot
DTC ?= dtc
u-root:
$(MAKE) -f targets/u-root.mk
LINUX_ARCH-$(CONFIG_LINUXBOOT_X86_64) = x86_64
LINUX_ARCH-$(CONFIG_LINUXBOOT_X86) = i386
LINUX_ARCH-$(CONFIG_LINUXBOOT_ARM64) = arm64
LINUX_ARCH-$(CONFIG_LINUXBOOT_RISCV_RV32) = riscv
LINUX_ARCH-$(CONFIG_LINUXBOOT_RISCV_RV64) = riscv
ifeq ($(CONFIG_LINUXBOOT_BUILD_INITRAMFS),y)
ifeq ($(CONFIG_LINUXBOOT_UROOT),y)
initramfs: u-root
endif
else
ifneq ($(CONFIG_LINUXBOOT_INITRAMFS),)
initramfs:
if [[ ! -f "$(top)/$(CONFIG_LINUXBOOT_INITRAMFS)" ]]; then \
echo "<< Linux initramfs '$(CONFIG_LINUXBOOT_INITRAMFS)' is missing. >>"; \
exit 1; \
fi
endif
endif
build/Image: $(CONFIG_LINUXBOOT_KERNEL_PATH)
ln -s -r $< $@
initramfs_compressed: initramfs
include targets/linux.mk targets/u-root.mk
build/initramfs: $(CONFIG_LINUXBOOT_INITRAMFS_PATH)
ifeq ($(CONFIG_LINUXBOOT_INITRAMFS_COMPRESSION_XZ),y)
xz --keep --force --check=crc32 --lzma2=dict=1MiB $(top)/$(CONFIG_LINUXBOOT_INITRAMFS)
xz --keep --force --check=crc32 --lzma2=dict=1MiB $(CONFIG_LINUXBOOT_INITRAMFS_PATH)
endif
cp $(CONFIG_LINUXBOOT_INITRAMFS_PATH)$(CONFIG_LINUXBOOT_INITRAMFS_SUFFIX) $@
ifeq ($(CONFIG_LINUXBOOT_COMPILE_KERNEL),y)
ifeq ($(CONFIG_LINUXBOOT_ARCH),arm64)
kernel: initramfs
if [[ ! -f "$(top)/$(CONFIG_LINUXBOOT_DTB_FILE)" ]]; then \
echo "<< Linux kernel devicetree is missing. >>"; \
exit 1; \
fi
$(MAKE) -f targets/linux.mk
else
kernel:
$(MAKE) -f targets/linux.mk
endif
else
kernel:
if [[ ! -f "$(top)/$(CONFIG_LINUXBOOT_KERNEL)" ]]; then \
echo "<< Linux kernel '$(CONFIG_LINUXBOOT_KERNEL)' is missing. >>"; \
exit 1; \
fi
endif
ifeq ($(CONFIG_LINUXBOOT_KERNEL_BZIMAGE),y)
linuxboot: kernel initramfs_compressed
build/bzImage: $(kernel_dir)/arch/x86/boot/bzImage | build
cp $< $@
else ifeq ($(CONFIG_LINUXBOOT_KERNEL_UIMAGE),y)
build/target.dtb: $(CONFIG_LINUXBOOT_DTS_FILE)
$(DTC) -o $@ $<
build/uImage: build/vmlinux.bin.lzma build/initramfs build/target.dtb $(LINUX_ARCH-y)/kernel_fdt_lzma.its | build
mkimage -f $(LINUX_ARCH-y)/kernel_fdt_lzma.its $@
endif # CONFIG_LINUXBOOT_KERNEL_BZIMAGE
build:
mkdir build
clean:
rm -rf $(project_dir)/kernel*
rm -f $(project_dir)/u-root
rm -f $(project_dir)/initramfs*
rm -f $(project_dir)/bzImage
rm -rf build/kernel*
rm -f build/u-root
rm -f build/initramfs*
rm -f build/bzImage
distclean:
rm -rf $(project_dir)
rm -rf build
.PHONY: linuxboot kernel initramfs_compressed initramfs u-root clean distclean
.PHONY: linuxboot clean distclean