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c4c60e4b19
openwrt/target/linux/armsr
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Mathew McBride c4c60e4b19 armsr: enable ACPI_BUTTON 
A review of the generated OpenWrt kernel .config
vs the Linux arm64 defconfig showed that this
option was not being enabled, as it is disabled
in OpenWrt's generic config.

ACPI_BUTTON is needed to report and respond to
power button events, so it should be enabled.

Signed-off-by: Mathew McBride <matt@traverse.com.au>
2023-08-15 15:55:00 +02:00
..
armv7
armv8 armsr: armv8: sync CPU features, EFI, CMA and scheduler options with Linux defconfig 2023-08-15 15:55:00 +02:00
base-files
image
patches-6.1 kernel: bump 6.1 to 6.1.44 2023-08-09 20:39:20 -04:00
config-6.1 armsr: enable ACPI_BUTTON 2023-08-15 15:55:00 +02:00
Makefile
modules.mk armsr: remove redundant phy-marvell-10g module 2023-08-13 15:01:36 +01:00
README

README 

This target generates images that can be used on ARM machines with EFI
support (e.g EDKII/TianoCore or U-Boot with bootefi).

There are two subtargets:
- armv7 for 32-bit machines
- armv8 for 64-bit machines

The kernel and filesystem images can also be used directly by QEMU:

Run with qemu-system-arm

	# boot with initramfs embedded in
	qemu-system-arm -nographic -M virt -m 64 -kernel openwrt-armsr-armv7-generic-initramfs-kernel.bin

	# boot with accel=kvm
	qemu-system-arm -nographic -M virt,accel=kvm -cpu host -m 64 -kernel
	openwrt-armsr-armv7-generic-initramfs-kernel.bin

	# boot with a separate rootfs
	qemu-system-arm -nographic -M virt -m 64 -kernel openwrt-armsr-armv7-generic-kernel.bin \
	  -drive file=openwrt-armsr-armv7-generic-ext4-rootfs.img,format=raw,if=virtio -append 'root=/dev/vda rootwait'

	# boot with local dir as rootfs
	qemu-system-arm -nographic -M virt -m 64 -kernel openwrt-armsr-armv7-generic-kernel.bin \
	  -fsdev local,id=rootdev,path=root-armsr/,security_model=none \
	  -device virtio-9p-pci,fsdev=rootdev,mount_tag=/dev/root \
	  -append 'rootflags=trans=virtio,version=9p2000.L,cache=loose rootfstype=9p'

Run with kvmtool

	# start a named machine
	lkvm run -k openwrt-armsr-armv7-zImage -i openwrt-armsr-armv7-rootfs.cpio --name armsr0

	# start with virtio-9p rootfs
	lkvm run -k openwrt-armsr-armv7-zImage -d root-armsr/

	# stop "armsr0"
	lkvm stop --name armsr0

	# stop all
	lkvm stop --all

The multi-platform ARMv8 target can be used with QEMU:

	qemu-system-aarch64 -machine virt -cpu cortex-a57 -nographic \
		-kernel openwrt-armsr-armv8-generic-initramfs-kernel.bin \

With a EDKII or U-Boot binary for the QEMU ARM virtual machines, you can use these
images in EFI mode:

32-bit:
gunzip -c bin/targets/armsr/armv7/openwrt-armsr-armv7-generic-ext4-combined.img.gz > openwrt-arm-32.img
qemu-system-arm -nographic \
    -cpu cortex-a15 -machine virt \
    -bios bin/targets/armsr/armv7/u-boot-qemu_armv7/u-boot.bin \
    -smp 1 -m 1024 \
    -device virtio-rng-pci \
    -drive file=openwrt-arm-32.img,format=raw,index=0,media=disk \
    -netdev user,id=testlan -net nic,netdev=testlan \
    -netdev user,id=testwan -net nic,netdev=testwan

64-bit:
gunzip -c bin/targets/armsr/armv8/openwrt-armsr-armv8-generic-ext4-combined.img.gz > openwrt-arm-64.img
qemu-system-aarch64 -nographic \
    -cpu cortex-a53 -machine virt \
    -bios bin/targets/armsr/armv8/u-boot-qemu_armv8/u-boot.bin \
    -smp 1 -m 1024 \
    -device virtio-rng-pci \
    -drive file=openwrt-arm-64.img,format=raw,index=0,media=disk \
    -netdev user,id=testlan -net nic,netdev=testlan \
    -netdev user,id=testwan -net nic,netdev=testwan

One can obtain other EFI/BIOS binaries from:
- Distribution packages (such as qemu-efi-arm and qemu-efi-aarch64 in Debian)
- Community builds, like retrage/edk2-nightly: https://retrage.github.io/edk2-nightly/