example: add script to generate bios mbr raw disks

Signed-off-by: mudler <mudler@kairos.io>

tools-image/bios-raw-image.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+# Generates raw bootable images with qemu
+set -ex
+CLOUD_INIT=${1:-cloud_init.yaml}
+QEMU=${QEMU:-qemu-system-x86_64}
+ISO=${2:-iso.iso}
+
+mkdir -p build
+pushd build
+touch meta-data
+cp -rfv $CLOUD_INIT user-data
+
+mkisofs -output ci.iso -volid cidata -joliet -rock user-data meta-data
+truncate -s "+$((20000*1024*1024))" disk.raw
+
+${QEMU} -m 8096 -smp cores=2 \
+        -nographic -cpu host \
+        -serial mon:stdio \
+        -rtc base=utc,clock=rt \
+        -chardev socket,path=qga.sock,server,nowait,id=qga0 \
+        -device virtio-serial \
+        -device virtserialport,chardev=qga0,name=org.qemu.guest_agent.0 \
+        -drive if=virtio,media=disk,file=disk.raw \
+        -drive format=raw,media=cdrom,readonly=on,file=$ISO \
+        -drive format=raw,media=cdrom,readonly=on,file=ci.iso \
+        -boot d \
+        -enable-kvm