#!/bin/sh
# Build SD card image

IMAGE="${1}" # For example "boot-bananapi.bin"
DEFCONFIG="${2}" # For example "Bananapi_defconfig"
TUPLE="${3}" # For example "arm-linux-gnueabihf"

set -e

# Create fresh empty directory
TMP=$(mktemp -d tmp.XXXXXX)
cd "${TMP}"

build-image tmp.img
build-u_boot u-boot "${DEFCONFIG}" "${TUPLE}"

# Copy U-Boot to 8192 bytes from start
dd if=u-boot/u-boot-sunxi-with-spl.bin of=tmp.img bs=1K seek=8

truncate -s 32M tmp.img
gzip tmp.img
cp tmp.img.gz "${IMAGE}.bin.gz"