Comment 9 for bug 2036730

"autopkgtest-buildvm-ubuntu-cloud -v --arch armhf --release mantic" on amd64 launches QEMU as

qemu-system-arm -machine virt -m 512 -smp 1 -nographic -net nic,model=virtio -net user,hostfwd=tcp:127.0.0.1:10022-:22 -object rng-random,filename=/dev/urandom,id=rng0 -device virtio-rng-pci,rng=rng0,id=rng-device0 -monitor unix:/tmp/autopkgtest-qemu.n4bb59zs/monitor,server=on,wait=off -virtfs local,id=autopkgtest,path=/tmp/autopkgtest-qemu.n4bb59zs/shared,security_model=none,mount_tag=autopkgtest -device virtio-serial -chardev socket,path=/tmp/autopkgtest-qemu.n4bb59zs/hvc0,server=on,wait=off,id=hvc0 -device virtconsole,chardev=hvc0 -chardev socket,path=/tmp/autopkgtest-qemu.n4bb59zs/hvc1,server=on,wait=off,id=hvc1 -device virtconsole,chardev=hvc1 -serial unix:/tmp/autopkgtest-qemu.n4bb59zs/ttyS0,server=on,wait=off -drive index=0,file=/tmp/autopkgtest-buildvm-ubuntu-cloud1bu3xpgi/mantic-server-cloudimg-armhf.img,format=qcow2,if=virtio,discard=unmap -drive index=1,file=/tmp/autopkgtest-buildvm-ubuntu-cloud1bu3xpgi/autopkgtest.seed,format=raw,if=virtio,discard=unmap,readonly -drive if=pflash,format=raw,unit=0,read-only=on,file=/usr/share/AAVMF/AAVMF32_CODE.fd -drive if=pflash,format=raw,unit=1,file=/tmp/autopkgtest-qemu.n4bb59zs/efivars.fd

So here the QEMU architecture looks right.

When I run this command I see no issue except for missing feedback to the user for many minutes:

BdsDxe: loading Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x5,0x0)
BdsDxe: starting Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x5,0x0)
EFI stub: Booting Linux Kernel...
EFI stub: Entering in SVC mode with MMU enabled
EFI stub: Loaded initrd from LINUX_EFI_INITRD_MEDIA_GUID device path
EFI stub: Using DTB from configuration table
EFI stub: Exiting boot services...
Moving image into final destination ./autopkgtest-mantic-armhf.img

The problem here seems to be using console=/dev/ttyS0 instead of console=/dev/ttyAMA0 on the kernel command line.

So we have two separate issues to resolve:

- serial console on the command line for armhf images
- setting --qemu-architecture=arm for the 'autopkgtest -a armhf' command.