Add general image builder

build-pine64-image.sh

@@ -0,0 +1,86 @@
+#!/bin/sh
+#
+# This scripts takes a simpleimage and a kernel tarball, resizes the
+# secondary partition and creates a rootfs inside it. Then extracts the
+# Kernel tarball on top of it, resulting in a full Pine64 disk image.
+#
+# Latest stuff can be found at the following locations:
+# -  https://www.stdin.xyz/downloads/people/longsleep/pine64-images/simpleimage-pine64-latest.img.xz
+# -  https://www.stdin.xyz/downloads/people/longsleep/pine64-images/linux/linux-pine64-latest.tar.xz"
+
+SIMPLEIMAGE="$1"
+KERNELTAR="$2"
+DISTRO="$3"
+COUNT="$4"
+
+if [ -z "$SIMPLEIMAGE" -o -z "$KERNELTAR" ]; then
+	echo "Usage: $0 <simpleimage.img.xz> <kernel.tar.xz> [distro] [count]"
+	exit 1
+fi
+
+if [ "$(id -u)" -ne "0" ]; then
+	echo "This script requires root."
+	exit 1
+fi
+
+if [ -z "$DISTRO" ]; then
+	DISTRO="xenial"
+fi
+
+if [ -z "$COUNT" ]; then
+	COUNT=1
+fi
+
+SIMPLEIMAGE=$(readlink -f "$SIMPLEIMAGE")
+KERNELTAR=$(readlink -f "$KERNELTAR")
+
+SIZE=3650 # MiB
+DATE=$(date +%Y%m%H)
+
+PWD=$(readlink -f .)
+TEMP=$(mktemp -p $PWD -d -t "pine64-build-XXXXXXXXXX")
+IMAGE="$DISTRO-pine64-bspkernel-$DATE-$COUNT.img"
+echo "> Building in $TEMP ..."
+
+cleanup() {
+    local arg=$?
+    echo "> Cleaning up ..."
+    umount "$TEMP/boot" || true
+    umount "$TEMP/rootfs" || true
+    kpartx -sd "$TEMP/$IMAGE" || true
+    rmdir "$TEMP/boot"
+    rmdir "$TEMP/rootfs"
+    rm "$TEMP/*" || true
+    rmdir "$TEMP"
+    exit $arg
+}
+trap cleanup EXIT
+
+set -x
+
+# Unpack
+unxz -k --stdout "$SIMPLEIMAGE" > "$TEMP/$IMAGE"
+# Enlarge
+dd if=/dev/zero bs=1M count=$SIZE >> "$TEMP/$IMAGE"
+# Resize
+echo ", +" | sfdisk -N 2 "$TEMP/$IMAGE"
+
+# Device
+mkdir "$TEMP/boot"
+mkdir "$TEMP/rootfs"
+DEVICE=$(losetup --show --find "$TEMP/$IMAGE")
+DEVICENAME=$(basename $DEVICE)
+echo "> Device is $DEVICE ..."
+kpartx -avs $DEVICE
+
+# Resize filesystem
+resize2fs /dev/mapper/${DEVICENAME}p2 || true
+
+# Mount
+mount /dev/mapper/${DEVICENAME}p1 "$TEMP/boot"
+mount /dev/mapper/${DEVICENAME}p2 "$TEMP/rootfs"
+
+sleep 2
+(cd simpleimage && ./make_rootfs.sh "$TEMP/rootfs" "$KERNELTAR" "$DISTRO" "$TEMP/boot")
+
+mv -v "$TEMP/$IMAGE" .