From 21c9a9f81467a79b6a06b5286e2c7c7bd8bffbab Mon Sep 17 00:00:00 2001 From: Ross Burton Date: Fri, 22 Mar 2024 16:50:09 +0000 Subject: genericarm64: add qemuboot configuration A basic SystemReady IR system can be provided by qemu-system-aarch64 and u-boot, so tell u-boot to build the qemu_arm64 machine and configure qemuboot to start that u-boot and search the virtio-attached wic image for the EFI boot partition. Currently this machine support emulated (Cortex-A76) and virtualised (KVM) execution, and virtio storage/network/console. Display support will be added shortly. Note that this machine still doesn't build U-Boot by default, as a u-boot binary for qemu in deploy would potentially confuse users who want to boot on real hardware and think this u-boot is needed. If you wish to use genericarm64 with runqemu, you'll need to manually bitbake u-boot. (From meta-yocto rev: cd40f405844c1ccfabcbe64ad6be5d98d0221f72) Signed-off-by: Ross Burton Signed-off-by: Richard Purdie --- meta-yocto-bsp/conf/machine/genericarm64.conf | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/meta-yocto-bsp/conf/machine/genericarm64.conf b/meta-yocto-bsp/conf/machine/genericarm64.conf index 7c4c76ffe0..4afd6c3a87 100644 --- a/meta-yocto-bsp/conf/machine/genericarm64.conf +++ b/meta-yocto-bsp/conf/machine/genericarm64.conf @@ -29,3 +29,30 @@ EFI_PROVIDER ?= "${@bb.utils.contains("DISTRO_FEATURES", "systemd", "systemd-boo # Try to bring up one physical serial console, or a virtualized serial console SERIAL_CONSOLES ?= "115200;ttyAMA0 115200;hvc0" + +# Allow u-boot to be built for use with qemu-system-aarch64. +# This u-boot is _not_ suitable for use with real hardware, and the expectation +# of this machine is that real hardware comes with the firmware pre-loaded. +UBOOT_MACHINE = "qemu_arm64_defconfig" + +# runqemu configuration to run a genericarm64 image inside a qemu-system-aarch64. You will need +# to build u-boot explicitly. +IMAGE_CLASSES += "qemuboot" +QB_SYSTEM_NAME = "qemu-system-aarch64" +# Boot the virtual machine with either an emulated Cortex-A76, or the host if using KVM +QB_MACHINE = "-machine virt" +QB_CPU = "-cpu cortex-a76" +QB_CPU_KVM = "-cpu host -machine gic-version=3" +QB_SMP = "-smp 4" +# Boot into U-Boot and let that scan the disk for the next step, don't pass any kernel or filesystem hints +QB_DEFAULT_BIOS = "u-boot.bin" +QB_DEFAULT_KERNEL = "none" +QB_DEFAULT_FSTYPE = "wic" +QB_FSINFO = "wic:no-kernel-in-fs" +# Mount the wic rootfs as a virtio block device +QB_ROOTFS_OPT = "-drive id=root,file=@ROOTFS@,if=none,format=raw -device virtio-blk-pci,drive=root" +# Virtio serial consoles +QB_SERIAL_OPT = "-device virtio-serial-pci -chardev null,id=virtcon -device virtconsole,chardev=virtcon" +QB_TCPSERIAL_OPT = "-device virtio-serial-pci -chardev socket,id=virtcon,port=@PORT@,host=127.0.0.1,nodelay=on -device virtconsole,chardev=virtcon" +# Virtio networking +QB_TAP_OPT = "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no" -- cgit v1.2.3-54-g00ecf