initial commit

.gitignore

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+/output
+/chroot

assets/build-image

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+#! /bin/bash
+
+set -ex
+
+out=/output/grub-intel.raw
+
+if [ -e $out ]; then
+    rm $out
+fi
+
+# create the file
+truncate -s2100M $out
+
+# partition it
+sgdisk \
+		--new=0:4096:+2G --typecode=0:EF00 -c 0:boot   \
+		--new=0:0:+2M --typecode=0:EF02 -c 0:BIOS-BOOT \
+		--hybrid=1:2 --print $out
+
+dev=$(losetup --find --show --partscan $out)
+trap "losetup -d $dev" EXIT
+
+devmap=/tmp/devmap
+cat >$devmap <<EOF
+(hd0) $dev
+EOF
+
+# format filesystems
+mkfs.vfat -n BLKBOOT ${dev}p1
+
+# mount
+mkdir -p /mnt
+(
+mount ${dev}p1 /mnt
+trap "umount /mnt" EXIT
+
+mkdir -p /mnt/grub
+cp /assets/grub.cfg /mnt/grub
+
+grub-install --target=i386-pc --boot-directory=/mnt $dev
+grub-install --target=x86_64-efi --removable --boot-directory=/mnt --efi-directory=/mnt
+)

assets/grub.cfg

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+search --no-floppy --set=root --part-label boot --hint $root
+
+insmod all_video
+set timeout=3
+
+set bootdev=PARTNAME=boot
+
+menuentry "Direktil" {
+    linux  /current/vmlinuz direktil.boot=$bootdev
+    initrd /current/initrd
+}

build-chroot

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+#! /bin/bash
+
+set -ex
+
+if ! [ -d chroot ]; then
+    mkdir chroot
+    debootstrap --arch amd64 testing chroot http://http.debian.net/debian/
+fi
+
+if ! [ -e chroot/usr/sbin/grub-mkconfig ]; then
+    chroot chroot <<EOF
+set -ex
+apt-get update
+yes |apt-get install -y grub2 grub-efi-amd64-bin grub-pc-bin gdisk dosfstools
+EOF
+fi
+
+rsync -av --delete assets chroot

enter-chroot

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+#! /bin/bash
+
+cleanup() {
+    umount -R chroot
+}
+
+set -ex
+
+mkdir -p chroot/{dev,proc,sys,output} output
+
+mount --bind chroot chroot
+mount --bind output chroot/output
+mount --bind /dev   chroot/dev
+mount --bind /proc  chroot/proc
+mount --bind /sys   chroot/sys
+
+trap cleanup EXIT
+
+chroot chroot "$@"