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Support external build directory 

When running inside a QEMU microvm with the source directory shared
via 9pfs, the kernel build process fails

> Error: Could not mmap file: vmlinux

Thus, we need to run the build in a path on a local filesystem.  To
support this, the Makefile now supports an `O` option, and all the build
scripts have been adjusted to make use of it as needed.

Since building in a local filesystem would ultimately discard the final
artifacts when the VM terminates, we need yet a different location for
the files we want to keep.  The `IMAGESDIR` option can be used to
specify this path.  This path can be on a shared filesystem, thus
saving the artifacts outside the microvm.
gentoo
Dustin 2023-03-03 12:22:20 -06:00
parent 8e556ca5a9
commit 4900085a1c
10 changed files with 101 additions and 79 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

94
Makefile
View File

@ -1,6 +1,9 @@
update.tar: output/update.tar.zstd O ?= .
IMAGESDIR ?= $(O)/images
.prepared: \ update.tar: $(IMAGESDIR)/update.tar.zstd
$(O)/.prepared: \
prepare.sh \ prepare.sh \
config-portage.sh \ config-portage.sh \
setup-local-repo.sh \ setup-local-repo.sh \
@ -9,86 +12,87 @@ update.tar: output/update.tar.zstd
./prepare.sh ./prepare.sh
./config-portage.sh ./config-portage.sh
./setup-local-repo.sh ./setup-local-repo.sh
touch .prepared mkdir -p $(O)
touch $(O)/.prepared
prepare: .prepared prepare: $(O)/.prepared
.host-tools: \ $(O)/.host-tools: \
build-host-tools.sh \ build-host-tools.sh \
.prepared $(O)/.prepared
./build-host-tools.sh ./build-host-tools.sh
touch .host-tools touch $(O)/.host-tools
host-tools: .host-tools host-tools: $(O)/.host-tools
.built: \ $(O)/.built: \
build.sh \ build.sh \
build-rootfs.sh \ build-rootfs.sh \
linux/arch/arm64/boot/Image.gz \ $(O)/linux/arch/arm64/boot/Image.gz \
.host-tools \ $(O)/.host-tools \
.prepared $(O)/.prepared
./build.sh ./build.sh
./build-rootfs.sh ./build-rootfs.sh
touch .built touch $(O)/.built
images/rootfs.squashfs: \ $(IMAGESDIR)/rootfs.squashfs: \
build-squashfs.sh \ build-squashfs.sh \
squashfs.exclude \ squashfs.exclude \
.built $(O)/.built
./build-squashfs.sh ./build-squashfs.sh "$(IMAGESDIR)"
squashfs: images/rootfs.squashfs squashfs: $(IMAGESDIR)/rootfs.squashfs
linux/arch/arm64/boot/Image.gz: \ $(O)/linux/arch/arm64/boot/Image.gz: \
build-kernel.sh \ build-kernel.sh \
linux.config \ linux.config \
.host-tools \ $(O)/.host-tools \
.prepared $(O)/.prepared
./build-kernel.sh ./build-kernel.sh "$(O)"
kernel: linux/arch/arm64/boot/Image.gz kernel: $(O)/linux/arch/arm64/boot/Image.gz
output/efi-part/EFI/BOOT/BOOTAA64.efi: \ $(O)/efi-part/EFI/BOOT/BOOTAA64.efi: \
build-grub.sh \ build-grub.sh \
grub.cfg \ grub.cfg \
.host-tools \ $(O)/.host-tools \
.prepared $(O)/.prepared
./build-grub.sh ./build-grub.sh "$(O)"
grub: output/efi-part/EFI/BOOT/BOOTAA64.efi grub: $(O)/efi-part/EFI/BOOT/BOOTAA64.efi
output/efi-part/u-boot.bin: \ $(O)/efi-part/u-boot.bin: \
build-uboot.sh \ build-uboot.sh \
u-boot.config u-boot.config
./build-uboot.sh ./build-uboot.sh "$(O)"
uboot: output/efi-part/u-boot.bin uboot: $(O)/efi-part/u-boot.bin
images/sdcard.img: \ $(IMAGESDIR)/sdcard.img: \
genimage.cfg \ genimage.cfg \
genimage.sh \ genimage.sh \
post-build.sh \ post-build.sh \
output/efi-part/u-boot.bin \ $(O)/efi-part/u-boot.bin \
output/efi-part/EFI/BOOT/BOOTAA64.efi $(O)/efi-part/EFI/BOOT/BOOTAA64.efi
./post-build.sh ./post-build.sh "$(O)"
./genimage.sh ./genimage.sh "$(O)" "$(IMAGESDIR)"
sdcard.img: images/sdcard.img sdcard.img: $(IMAGESDIR)/sdcard.img
images/firmware.img: images/sdcard.img $(IMAGESDIR)/firmware.img: $(IMAGESDIR)/sdcard.img
output/update.tar.zstd: \ $(IMAGESDIR)/update.tar.zstd: \
images/rootfs.squashfs \ $(IMAGESDIR)/rootfs.squashfs \
images/firmware.img \ $(IMAGESDIR)/firmware.img \
install-update.sh \ install-update.sh \
.host-tools \ $(O)/.host-tools \
.prepared $(O)/.prepared
./build-update.sh ./build-update.sh "$(IMAGESDIR)"
clean: clean:
git -C u-boot clean -fdx && git -C u-boot checkout -- . git -C u-boot clean -fdx && git -C u-boot checkout -- .
rm -rf linux output images tmp rm -rf $(O)/linux $(O)/output $(IMAGESDIR) $(O)/tmp
rm -f .prepared .host-tools rm -f $(O)/.prepared $(O)/.host-tools
.PHONY: \ .PHONY: \
grub \ grub \

16
build-grub.sh
View File

@ -5,6 +5,8 @@ set -e
. ./config . ./config
O="${1}"
GRUB_MODULES=' GRUB_MODULES='
boot boot
echo echo
@ -26,17 +28,17 @@ zstd
' '
echo 'Creating GRUB image ...' echo 'Creating GRUB image ...'
mkdir -p output/efi-part/EFI/BOOT mkdir -p "${O}"/efi-part/EFI/BOOT
grub-mkimage \ grub-mkimage \
-O arm64-efi \ -O arm64-efi \
-o output/efi-part/EFI/BOOT/BOOTAA64.efi \ -o "${O}"/efi-part/EFI/BOOT/BOOTAA64.efi \
-d /usr/${target}/usr/lib/grub/arm64-efi \ -d /usr/${target}/usr/lib/grub/arm64-efi \
-p /EFI/gentoo \ -p /EFI/gentoo \
${GRUB_MODULES} ${GRUB_MODULES}
echo 'Generating GRUB configuration file ...' echo 'Generating GRUB configuration file ...'
mkdir -p output/efi-part/EFI/gentoo mkdir -p "${O}"/efi-part/EFI/gentoo
cp -uv grub.cfg output/efi-part/EFI/gentoo cp -uv grub.cfg "${O}"/efi-part/EFI/gentoo
grub-editenv output/efi-part/EFI/gentoo/grubenv set rootflags='ro' grub-editenv "${O}"/efi-part/EFI/gentoo/grubenv set rootflags='ro'
grub-editenv output/efi-part/EFI/gentoo/grubenv set default=0 grub-editenv "${O}"/efi-part/EFI/gentoo/grubenv set default=0
grub-editenv output/efi-part/EFI/gentoo/grubenv set timeout=5 grub-editenv "${O}"/efi-part/EFI/gentoo/grubenv set timeout=5

28
build-kernel.sh
View File

@ -3,16 +3,20 @@
set -e set -e
O="${1}"
. ./config . ./config
emerge -vnj ${kernel_pkg} emerge -vnj ${kernel_pkg}
export ARCH=arm64 CROSS_COMPILE=${target}- export ARCH=arm64 CROSS_COMPILE=${target}-
mkdir -p linux unset MAKEFLAGS MAKEOVERRIDES MAKELEVEL
cd linux mkdir -p "${O}"/linux
/usr/src/linux/scripts/kconfig/merge_config.sh -m \ /usr/src/linux/scripts/kconfig/merge_config.sh -m \
-O "${O}"/linux \
/usr/src/linux/arch/*/configs/${kernel_defconfig}_defconfig \ /usr/src/linux/arch/*/configs/${kernel_defconfig}_defconfig \
../linux.config linux.config
cd "${O}"/linux
make -C /usr/src/linux O=${PWD} olddefconfig make -C /usr/src/linux O=${PWD} olddefconfig
make -j$(nproc) make -j$(nproc)
touch arch/arm64/boot/Image.gz touch arch/arm64/boot/Image.gz
@ -22,14 +26,14 @@ cd -
printf 'Installing Kernel %s ...\n' "${kver}" printf 'Installing Kernel %s ...\n' "${kver}"
mkdir -p /mnt/gentoo/boot mkdir -p /mnt/gentoo/boot
cp -au linux/arch/arm64/boot/Image.gz /mnt/gentoo/boot/vmlinuz-${kver} cp -au "${O}"/linux/arch/arm64/boot/Image.gz /mnt/gentoo/boot/vmlinuz-${kver}
cp -au linux/.config /mnt/gentoo/boot/config-${kver} cp -au "${O}"/linux/.config /mnt/gentoo/boot/config-${kver}
cp -au linux/System.map /mnt/gentoo/boot/System.map-${kver} cp -au "${O}"/linux/System.map /mnt/gentoo/boot/System.map-${kver}
printf 'Installing device tree binaries ...\n' printf 'Installing device tree binaries ...\n'
mkdir -p output/efi-part/overlays mkdir -p "${O}"/efi-part/overlays
cp -au linux/arch/arm64/boot/dts/${device_tree} output/efi-part/ cp -u "${O}"/linux/arch/arm64/boot/dts/${device_tree} "${O}"/efi-part/
cp -au \ cp -u \
linux/arch/arm64/boot/dts/overlays/*.dtb \ "${O}"/linux/arch/arm64/boot/dts/overlays/*.dtb \
linux/arch/arm64/boot/dts/overlays/*.dtbo \ "${O}"/linux/arch/arm64/boot/dts/overlays/*.dtbo \
output/efi-part/overlays/ "${O}"/efi-part/overlays/

6
build-squashfs.sh
View File

@ -5,10 +5,12 @@ set -e
. ./config . ./config
mkdir -p images IMAGESDIR="${1}"
mkdir -p "${IMAGESDIR}"
mksquashfs \ mksquashfs \
/mnt/gentoo \ /mnt/gentoo \
images/rootfs.squashfs \ "${IMAGESDIR}"/rootfs.squashfs \
-comp gzip \ -comp gzip \
-ef squashfs.exclude \ -ef squashfs.exclude \
-no-exports \ -no-exports \

10
build-uboot.sh
View File

@ -5,12 +5,14 @@ set -e
. ./config . ./config
O="${1}"
./patch-uboot.sh ./patch-uboot.sh
cd u-boot cd u-boot
cat configs/rpi_4_defconfig ../u-boot.config > configs/yellow_defconfig cat configs/rpi_4_defconfig ../u-boot.config > configs/yellow_defconfig
make yellow_defconfig make O="${O}"/u-boot yellow_defconfig
CROSS_COMPILE=${target}- make CROSS_COMPILE=${target}- make O="${O}"/u-boot -j$(nproc)
cd .. cd ..
mkdir -p output/efi-part mkdir -p "${O}"/efi-part
cp -au u-boot/u-boot.bin output/efi-part cp -u "${O}"/u-boot/u-boot.bin "${O}"/efi-part

8
build-update.sh
View File

@ -5,11 +5,13 @@ set -e
. ./config . ./config
cd images IMAGESDIR="$1"
cd "${IMAGESDIR}"
sha256sum firmware.img > digests sha256sum firmware.img > digests
sha256sum rootfs.squashfs >> digests sha256sum rootfs.squashfs >> digests
ln ../install-update.sh install cp -u "${OLDPWD}"/install-update.sh install
tar -c --zstd -f ../output/update.tar.zstd \ tar -c --zstd -f update.tar.zstd \
digests \ digests \
firmware.img \ firmware.img \
rootfs.squashfs \ rootfs.squashfs \

2
build.sh
View File

@ -5,6 +5,8 @@ set -e
. ./config . ./config
unset MAKEFLAGS MAKEOVERRIDES MAKELEVEL
${target}-emerge -vuUDj sys-apps/util-linux ${target}-emerge -vuUDj sys-apps/util-linux
${target}-emerge -vnuUDj \ ${target}-emerge -vnuUDj \

2
genimage.cfg
View File

@ -4,7 +4,7 @@ image firmware.img {
vfat { vfat {
} }
srcpath = "output/efi-part" srcpath = "efi-part"
size = 32M size = 32M
} }

10
genimage.sh
View File

@ -14,14 +14,18 @@ cleanup() {
. ./config . ./config
O="${1}"
IMAGESDIR="${2}"
trap cleanup INT TERM QUIT EXIT trap cleanup INT TERM QUIT EXIT
tmproot=$(mktemp -d) tmproot=$(mktemp -d)
tmppath=$(mktemp -d) tmppath=$(mktemp -d)
cd "${O}"
genimage \ genimage \
--rootpath "${tmproot}" \ --rootpath "${tmproot}" \
--tmppath "${tmppath}" \ --tmppath "${tmppath}" \
--inputpath images/ \ --inputpath "${IMAGESDIR}" \
--outputpath images/ \ --outputpath "${IMAGESDIR}" \
--mkdosfs mkfs.vfat \ --mkdosfs mkfs.vfat \
--config genimage.cfg --config "${OLDPWD}"/genimage.cfg

4
post-build.sh
View File

@ -5,9 +5,9 @@ set -e
. ./config . ./config
cp -auv \ cp -uv \
/usr/${target}/boot/*.bin \ /usr/${target}/boot/*.bin \
/usr/${target}/boot/*.dat \ /usr/${target}/boot/*.dat \
/usr/${target}/boot/*.elf \ /usr/${target}/boot/*.elf \
config.txt \ config.txt \
output/efi-part/ "$1"/efi-part/