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openwrt/target/linux/armvirt
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Christian Lamparter afcb6b1524 armvirt: 64: enable driver for QEMU' supported watchdog 
QEMU can emulate several watchdogs:
aspeed SoC, i6300esb, ib700wdt, imx2, cmsdk-apb and sbsa_gwdt.

Out of these, the ARM SBSA Generic Watchdog (sbsa_gwdt)
makes the most sense for the armvirt' 64 target. Both imx2 and
aspeed are guarded by special vendor specific CONFIG_ in the
upstream kernel.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2022-05-07 14:31:21 +02:00
..
32 armvirt: move common symbols from subtarget to target config 2022-04-09 19:31:46 +02:00
64 armvirt: 64: enable driver for QEMU' supported watchdog 2022-05-07 14:31:21 +02:00
base-files/etc treewide: remove execute bit and shebang from board.d files 2021-03-06 11:30:06 +01:00
image target: use SPDX license identifiers on Makefiles 2021-02-10 15:47:18 +01:00
config-5.10 armvirt: refresh 5.10 config 2022-04-09 19:31:46 +02:00
config-5.15 armvirt: move common symbols from subtarget to target config 2022-04-09 19:31:46 +02:00
Makefile armvirt: add 5.15 as testing kernel 2022-04-09 19:31:46 +02:00
README armvirt: README: rename it from LEDE to OpenWrt 2020-12-14 21:38:10 +00:00

README 

This is intended to be used with OpenWrt project to provide image for use with
QEMU ARM virt machine.

Run with qemu-system-arm

	# boot with initramfs embedded in
	qemu-system-arm -nographic -M virt -m 64 -kernel openwrt-armvirt-32-zImage-initramfs

	# boot with accel=kvm
	qemu-system-arm -nographic -M virt,accel=kvm -cpu host -m 64 -kernel
	openwrt-armvirt-32-zImage-initramfs

	# boot with a separate rootfs
	qemu-system-arm -nographic -M virt -m 64 -kernel openwrt-armvirt-32-zImage \
	  -drive file=openwrt-armvirt-32-root.ext4,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-armvirt-32-zImage \
	  -fsdev local,id=rootdev,path=root-armvirt/,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-armvirt-32-zImage -i openwrt-armvirt-32-rootfs.cpio --name armvirt0

	# start with virtio-9p rootfs
	lkvm run -k openwrt-armvirt-32-zImage -d root-armvirt/

	# stop "armvirt0"
	lkvm stop --name armvirt0

	# 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-armvirt-64-Image-initramfs \