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authorYousong Zhou <yszhou4tech@gmail.com>2016-12-08 23:21:30 +0800
committerJohn Crispin <john@phrozen.org>2016-12-16 07:56:35 +0100
commit44ecfc26eb22ca23668a5fd0c706d75f274e410a (patch)
treeb4b3df9deb3c5f8e62296723b0937694ecdb5c25 /target/linux/armvirt/README
parentfb237477fd1e7801e4877f9fe1ea7bc1ec16dd99 (diff)
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armvirt: new target
An ARM Cortex-A15 machine provided by QEMU. Kernel drivers enabled: - pl011, uart - pl031, rtc - pl061, gpio - pci-host-generic - virtio_{mmio,pci,net,blk,scsi,9p,console,balloon} - smp with NR_CPUS=4 - cpu-hotplug - ext4 - neon, vfp extensions support (otherwise userland will fail with illegal instruction signal (code 0x00000004)) - DEBUG_BUGVERBOSE for debug purposes Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
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+This is intended to be used with LEDE project to provide image for use with
+QEMU arm-softmmu virt machine.
+
+Run with qemu-system-arm
+
+ # boot with initramfs embedded in
+ qemu-system-arm -nographic -M virt -m 64 -kernel lede-armvirt-zImage-initramfs
+
+ # boot with accel=kvm
+ qemu-system-arm -nographic -M virt,accel=kvm -cpu host -m 64 -kernel lede-armvirt-zImage-initramfs
+
+ # boot with a separate rootfs
+ qemu-system-arm -nographic -M virt -m 64 -kernel lede-armvirt-zImage \
+ -drive file=lede-armvirt-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 lede-armvirt-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 lede-armvirt-zImage -i lede-armvirt-rootfs.cpio --name armvirt0
+
+ # start with virtio-9p rootfs
+ lkvm run -k lede-armvirt-zImage -d root-armvirt/
+
+ # stop "armvirt0"
+ lkvm stop --name armvirt0
+
+ # stop all
+ lkvm stop --all