compile_rk_u-boot

#!/bin/sh

# Usage function
function usage() {
  cat >&2 <<EOF
${SH_FILE} is used to compile official U-Boot binary for Rockchip SoC based board

Usage: ${SH_FILE} -b board [-h] [-u dir]

Where:
  -b	name of the board to configure (for example: roc-rk3328-cc) 
  -h    this help page
  -u	U-Boot source directory
EOF
  exit 0
}

# Error function
function error() {
  echo -e "$@" >&2
  exit 1
}

# Variable(s)
typeset -r SH_FILE=${0##*/}
typeset -r TMPFS=/dev/shm/u-boot-tmp
typeset -rx ARCH=arm
typeset -rx CROSS_COMPILE=aarch64-elf-
typeset -x U_BOOT_DIR=~/git/github/u-boot
typeset -x PATH=~/cross-compile/aarch64/gcc-linaro-7.2.1-2017.11-x86_64_aarch64-elf/bin:$PATH
typeset BOARD

# Get options
while getopts "b:hu:" ARG; do
  case ${ARG} in
    b) BOARD=${OPTARG}
       ;;
    u) U_BOOT_DIR=${OPTARG}
       ;;
    h|*) usage
       ;;
  esac
done
shift $((OPTIND-1))

# Board model must be filled!
[[ -z "${BOARD}" ]] \
  && error "Board model must be filled!\n"

# Remove old TMPFS and re-create it
echo "- Cleaning/Creating ${TMPFS} directory..."
rm -rf ${TMPFS} \
  || error "Cannot clean temporary directory ${TMPFS}!"
mkdir -p ${TMPFS} \
  || error "Cannot create temporary directory ${TMPFS}!"

# Copy u-boot source in the tmpfs directory
rsync -aq ${U_BOOT_DIR}/ ${TMPFS} \
  || error "Cannot copy ${U_BOOT_DIR}/* in ${TMPFS}!"

# Cleanup U-Boot build
echo "- Cleaning U-Boot build directory..."
cd ${TMPFS}
make clean && make mrproper && make distclean

# Configure U-Boot
echo "- Configure U-Boot for ${BOARD} board..."
make ${BOARD}_defconfig

# Compile U-Boot
echo "- Compiling U-Boot..."
make || error "Failed to compile U-Boot!"

# We need to go back into original directory
cd ${OLDPWD}

# Clean exit
exit 0