#!/bin/bash

# Copyright (C) 2022-2024 René Rebe, ExactCODE GmbH; Germany.

[ "$QEMUSYS" ] || exit 43

qemuargs=

vmlinux=vmlinux
append="console=ttyS0"
isoboot="-boot d"

lowmem=128	# installer needs a bit more than minird
normmem=768
highmem=2048

intstorage="-device virtio-blk,drive=drv0 -drive if=none,id=drv0,file="
extstorage="-cdrom "

host_arch=$(uname -m)

efidir=/srv

case "$QEMUSYS" in
  *-alpha)
	intstorage="-hda "
	isoboot=
	;;
  *-arm*|*-aarch64*)
	qemuargs="-M virt"
	vmlinux=vmlinuz
	[[ "$QEMUSYS" = *-aarch64* ]] &&
		qemuargs="$qemuargs -cpu max" &&
		isoboot="-bios $efidir/RELEASEAARCH64_QEMU_EFI.fd $isoboot"

	[[ "$QEMUSYS" = *-arm* ]] &&
		isoboot="-bios $efidir/RELEASEARM_QEMU_EFI.fd $isoboot"

	[ "$host_arch"  = aarch64 ] && qemuargs="$qemuargs --enable-kvm"
	append= # "console=ttyAMA0"
	;;
  *-mips*)
  	qemuargs="-M malta"
	intstorage="-hda "
	isoboot=
	;;
  *-m68k)
	qemuargs="-M q800"
	intstorage="-hda "
	lowmem=256
	normmem=512
	isoboot=
	;;
  *-microblaze|*-nios2|*-or1k)
	intstorage="-hda "
	isoboot=
	;;
  *-ppc*)
	if [[ $QEMU = *64le ]]; then
		qemuargs="-M powernv"
		append="console=hvc0"
		lowmem=1024
		normmem=1024
		extstorage="-drive if=virtio,file="
		isoboot=
	elif [[ $QEMUSYS = *64 ]]; then
		intstorage="-hda "
		qemuargs="-M mac99"
		append=
	else
		qemuargs="-M g3beige"
		intstorage="-hda "
		highmem=1024
		append=
	fi
	[ "$host_arch" = ppc64 ] && qemuargs="$qemuargs --enable-kvm"
	;;
  *-*riscv*)
	vmlinux=vmlinuz
	qemuargs="-M virt"
	extstorage="-drive if=virtio,file="
	isoboot=
	;;
  *-sh4)
	append="console=ttySC1,115200"
	qemuargs="-M r2d"
	intstorage="-hda "
	isoboot=
	;;
  *-sparc)
	qemuargs="-M SS-5" # -cpu 'TI SuperSparc II'"
	intstorage="-hda "
	normmem=256 highmem=256
	;;
  *-s390x)
	vmlinux=vmlinuz
	qemuargs=
	isoboot=
	;;
  *-hppa64*)
	qemuargs="$qemuargs -machine C3700 -cpu hppa64"
	intstorage="-hda "
	QEMUSYS=${QEMUSYS%64*}
	;;
  *-*86*)
	vmlinux=vmlinuz
	if [[ "$QEMUSYS" = *386 ]]; then
		lowmem=96
		isoboot="-bios $efidir/RELEASEIa32_OVMF.fd $isoboot"
	else
		isoboot="-bios $efidir/RELEASEX64_OVMF.fd $isoboot"
	fi

	[ "$host_arch"  = x86_64 ] && qemuargs="$qemuargs --enable-kvm"
	;;
esac

[[ "$qemuargs" = *enable-kvm* ]] && qemuargs="$qemuargs -smp 2"

[ -e $SYSROOT/boot/$vmlinux ] || exit 42