src: add disk create script, grub config

src/create_disk.sh

@@ -0,0 +1,66 @@
+#!/bin/sh
+set -euo pipefail
+
+if [ "$#" -ne 6 ]; then
+	echo 'create_disk <device> <ostree-repo> <ostree-ref> <grub-script> <os-name> <space separated kargs>'
+	exit 1
+fi
+
+export PATH=$PATH:/sbin:/usr/sbin
+
+disk="$1" && shift
+ostree="$1" && shift
+ref="$1" && shift
+grub_script="$1" && shift
+os_name="$1" && shift
+extrakargs="$1" && shift
+
+# partition and create fs
+sgdisk -Z $disk \
+	-n 1:0:+128M -c 1:boot \
+	-n 2:0:+128M -c 2:EFI-SYSTEM -t 2:C12A7328-F81F-11D2-BA4B-00A0C93EC93B \
+	-n 3:0:+128M -c 3:BIOS-BOOT  -t 3:21686148-6449-6E6F-744E-656564454649 \
+	-n 4:0:0     -c 4:root       -t 4:4F68BCE3-E8CD-4DB1-96E7-FBCAF984B709
+sgdisk -p "$disk"
+
+# HACK ALERT - wait for partition rescans
+sleep 2
+
+mkfs.ext4 "${disk}1" -L boot
+mkfs.fat "${disk}2" -n EFI-SYSTEM
+# partition 3 has no FS, its for bios grub
+mkfs.xfs "${disk}4"  -L root
+
+# mount the partitions
+rm -rf rootfs
+mkdir rootfs
+mount "${disk}4" rootfs
+mkdir rootfs/boot
+mount "${disk}1" rootfs/boot
+mkdir rootfs/boot/efi
+mount "${disk}2" rootfs/boot/efi
+
+# init the ostree
+ostree admin init-fs rootfs
+ostree pull-local "$ostree" --repo rootfs/ostree/repo
+ostree admin os-init "$os_name" --sysroot rootfs
+allkargs='root=/dev/disk/by-label/root rootflags=defaults,prjquota rw $ignition_firstboot'
+allkargs="$allkargs $extrakargs"
+kargsargs=""
+for karg in $allkargs
+do
+	kargsargs+="--karg-append=$karg "
+done
+ostree admin deploy "$ref" --sysroot rootfs --os fedora-coreos $kargsargs
+
+# install bios grub
+grub2-install \
+	--target i386-pc \
+	--boot-directory rootfs/boot \
+	$disk
+
+# copy the grub config and any other files we might need
+cp $grub_script rootfs/boot/grub2/grub.cfg
+touch rootfs/boot/ignition.firstboot
+
+umount -R rootfs

src/grub.cfg

@@ -0,0 +1,49 @@
+set pager=1
+
+if [ -f ${config_directory}/grubenv ]; then
+  load_env -f ${config_directory}/grubenv
+elif [ -s $prefix/grubenv ]; then
+  load_env
+fi
+
+if [ x"${feature_menuentry_id}" = xy ]; then
+  menuentry_id_option="--id"
+else
+  menuentry_id_option=""
+fi
+
+function load_video {
+  if [ x$feature_all_video_module = xy ]; then
+    insmod all_video
+  else
+    insmod efi_gop
+    insmod efi_uga
+    insmod ieee1275_fb
+    insmod vbe
+    insmod vga
+    insmod video_bochs
+    insmod video_cirrus
+  fi
+}
+
+serial --speed=115200
+terminal_input serial console
+terminal_output serial console
+if [ x$feature_timeout_style = xy ] ; then
+  set timeout_style=menu
+  set timeout=1
+# Fallback normal timeout code in case the timeout_style feature is
+# unavailable.
+else
+  set timeout=1
+fi
+
+set ignition_firstboot=""
+# Determine if this is a first boot.
+if [ -f "/ignition.firstboot" ]; then
+    set ignition_firstboot="ignition.firstboot"
+fi
+
+set root='hd0,gpt1'
+set boot='hd0,gpt1'
+blscfg