1 files changed, 174 insertions, 0 deletions
diff --git a/run_archiso b/run_archiso
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+++ b/run_archiso
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+#!/usr/bin/env bash
+#
+# Copyright (C) 2020 David Runge <dvzrv@archlinux.org>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# A simple script to run an archiso image using qemu. The image can be booted
+# using BIOS or UEFI.
+#
+# Requirements:
+# - qemu
+# - edk2-ovmf (when UEFI booting)
+
+
+set -eu
+
+print_help() {
+    local usagetext
+    IFS='' read -r -d '' usagetext <<EOF || true
+Usage:
+    run_archiso [options]
+
+Options:
+    -a              set accessibility support using brltty
+    -b              set boot type to 'BIOS' (default)
+    -d              set image type to hard disk instead of optical disc
+    -h              print help
+    -i [image]      image to boot into
+    -s              use Secure Boot (only relevant when using UEFI)
+    -u              set boot type to 'UEFI'
+    -v              use VNC display (instead of default SDL)
+    -c [image]      attach an additional optical disc image (e.g. for cloud-init)
+
+Example:
+    Run an image using UEFI:
+    $ run_archiso -u -i archiso-2020.05.23-x86_64.iso
+EOF
+    printf '%s' "${usagetext}"
+}
+
+cleanup_working_dir() {
+    if [[ -d "${working_dir}" ]]; then
+        rm -rf -- "${working_dir}"
+    fi
+}
+
+copy_ovmf_vars() {
+    if [[ ! -f '/usr/share/edk2-ovmf/x64/OVMF_VARS.fd' ]]; then
+        printf 'ERROR: %s\n' "OVMF_VARS.fd not found. Install edk2-ovmf."
+        exit 1
+    fi
+    cp -av -- '/usr/share/edk2-ovmf/x64/OVMF_VARS.fd' "${working_dir}/"
+}
+
+check_image() {
+    if [[ -z "$image" ]]; then
+        printf 'ERROR: %s\n' "Image name can not be empty."
+        exit 1
+    fi
+    if [[ ! -f "$image" ]]; then
+        printf 'ERROR: %s\n' "Image file (${image}) does not exist."
+        exit 1
+    fi
+}
+
+run_image() {
+    if [[ "$boot_type" == 'uefi' ]]; then
+        copy_ovmf_vars
+        if [[ "${secure_boot}" == 'on' ]]; then
+            printf '%s\n' 'Using Secure Boot'
+            local ovmf_code='/usr/share/edk2-ovmf/x64/OVMF_CODE.secboot.fd'
+        else
+            local ovmf_code='/usr/share/edk2-ovmf/x64/OVMF_CODE.fd'
+        fi
+        qemu_options+=(
+            '-drive' "if=pflash,format=raw,unit=0,file=${ovmf_code},readonly"
+            '-drive' "if=pflash,format=raw,unit=1,file=${working_dir}/OVMF_VARS.fd"
+            '-global' "driver=cfi.pflash01,property=secure,value=${secure_boot}"
+        )
+    fi
+
+    if [[ "${accessibility}" == 'on' ]]; then
+        qemu_options+=(
+            '-chardev' 'braille,id=brltty'
+            '-device' 'usb-braille,id=usbbrl,chardev=brltty'
+        )
+    fi
+
+    if [[ -n "${oddimage}" ]]; then
+        qemu_options+=(
+            '-device' 'scsi-cd,bus=scsi0.0,drive=cdrom1'
+            '-drive' "id=cdrom1,if=none,format=raw,media=cdrom,readonly=on,file=${oddimage}"
+        )
+    fi
+
+    qemu-system-x86_64 \
+        -boot order=d,menu=on,reboot-timeout=5000 \
+        -m "size=3072,slots=0,maxmem=$((3072*1024*1024))" \
+        -k en-us \
+        -name archiso,process=archiso_0 \
+        -device virtio-scsi-pci,id=scsi0 \
+        -device "scsi-${mediatype%rom},bus=scsi0.0,drive=${mediatype}0" \
+        -drive "id=${mediatype}0,if=none,format=raw,media=${mediatype/hd/disk},readonly=on,file=${image}" \
+        -display "${display}" \
+        -vga virtio \
+        -audiodev pa,id=snd0 \
+        -device ich9-intel-hda \
+        -device hda-output,audiodev=snd0 \
+	-hda main \
+        -device virtio-net-pci,romfile=,netdev=net0 -netdev user,id=net0,hostfwd=tcp::60022-:22 \
+        -machine type=q35,smm=on,accel=kvm,usb=on,pcspk-audiodev=snd0 \
+        -global ICH9-LPC.disable_s3=1 \
+        -enable-kvm \
+        "${qemu_options[@]}" \
+        -serial stdio \
+        -no-reboot
+}
+
+image=''
+oddimage=''
+accessibility=''
+boot_type='bios'
+mediatype='cdrom'
+secure_boot='off'
+display='sdl'
+qemu_options=()
+working_dir="$(mktemp -dt run_archiso.XXXXXXXXXX)"
+trap cleanup_working_dir EXIT
+
+if (( ${#@} > 0 )); then
+    while getopts 'abc:dhi:suv' flag; do
+        case "$flag" in
+            a)
+                accessibility='on'
+                ;;
+            b)
+                boot_type='bios'
+                ;;
+            c)
+                oddimage="$OPTARG"
+                ;;
+            d)
+                mediatype='hd'
+                ;;
+            h)
+                print_help
+                exit 0
+                ;;
+            i)
+                image="$OPTARG"
+                ;;
+            u)
+                boot_type='uefi'
+                ;;
+            s)
+                secure_boot='on'
+                ;;
+            v)
+                display='none'
+                qemu_options+=(-vnc 'vnc=0.0.0.0:0,vnc=[::]:0')
+                ;;
+            *)
+                printf '%s\n' "Error: Wrong option. Try 'run_archiso -h'."
+                exit 1
+                ;;
+        esac
+    done
+else
+    print_help
+    exit 1
+fi
+
+check_image
+run_image