#!/bin/sh -e
  
  # Script to create header files and links to configure
  # U-Boot for a specific board.
  #

  # Parameters:  Target  Architecture  CPU  Board [VENDOR] [SOC]

  #

  # (C) 2002-2013 DENX Software Engineering, Wolfgang Denk <wd@denx.de>
  #
  # SPDX-License-Identifier:	GPL-2.0+

  #
  
  APPEND=no	# Default: Create new config file

  BOARD_NAME=""	# Name to print in make output

  TARGETS=""

  arch=""
  cpu=""
  board=""
  vendor=""
  soc=""

  options=""

  
  if [ \( $# -eq 2 \) -a \( "$1" = "-A" \) ] ; then
  	# Automatic mode

  	line=`awk '($0 !~ /^#/ && $7 ~ /^'"$2"'$/) { print $1, $2, $3, $4, $5, $6, $7, $8 }' $srctree/boards.cfg`

  	if [ -z "$line" ] ; then

  		echo "make: *** No rule to make target \`$2_config'.  Stop." >&2
  		exit 1

  	fi

  
  	set ${line}
  	# add default board name if needed
  	[ $# = 3 ] && set ${line} ${1}
  fi

  while [ $# -gt 0 ] ; do
  	case "$1" in
  	--) shift ; break ;;
  	-a) shift ; APPEND=yes ;;

  	-n) shift ; BOARD_NAME="${7%_config}" ; shift ;;

  	-t) shift ; TARGETS="`echo $1 | sed 's:_: :g'` ${TARGETS}" ; shift ;;

  	*)  break ;;
  	esac
  done

  [ $# -lt 7 ] && exit 1
  [ $# -gt 8 ] && exit 1

  # Strip all options and/or _config suffixes

  CONFIG_NAME="${7%_config}"

  [ "${BOARD_NAME}" ] || BOARD_NAME="${7%_config}"

  
  arch="$2"

  cpu=`echo $3 | awk 'BEGIN {FS = ":"} ; {print $1}'`
  spl_cpu=`echo $3 | awk 'BEGIN {FS = ":"} ; {print $2}'`

  if [ "$6" = "-" ] ; then

  	board=${BOARD_NAME}
  else

  	board="$6"

  fi

  [ "$5" != "-" ] && vendor="$5"
  [ "$4" != "-" ] && soc="$4"
  [ $# -gt 7 ] && [ "$8" != "-" ] && {

  	# check if we have a board config name in the options field
  	# the options field mave have a board config name and a list
  	# of options, both separated by a colon (':'); the options are
  	# separated by commas (',').
  	#
  	# Check for board name

  	tmp="${8%:*}"

  	if [ "$tmp" ] ; then
  		CONFIG_NAME="$tmp"
  	fi
  	# Check if we only have a colon...

  	if [ "${tmp}" != "$8" ] ; then
  		options=${8#*:}

  		TARGETS="`echo ${options} | sed 's:,: :g'` ${TARGETS}"
  	fi
  }

  
  if [ "${ARCH}" -a "${ARCH}" != "${arch}" ]; then
  	echo "Failed: \$ARCH=${ARCH}, should be '${arch}' for ${BOARD_NAME}" 1>&2

  	exit 1
  fi

  #
  # Test above needed aarch64, now we need arm
  #
  if [ "${arch}" = "aarch64" ]; then
  	arch="arm"
  fi

  if [ "$options" ] ; then
  	echo "Configuring for ${BOARD_NAME} - Board: ${CONFIG_NAME}, Options: ${options}"
  else
  	echo "Configuring for ${BOARD_NAME} board..."
  fi

  #
  # Create link to architecture specific headers
  #

  if [ "$SRCTREE" != "$OBJTREE" ] ; then
  	mkdir -p ${OBJTREE}/include

  	LNPREFIX=${SRCTREE}/arch/${arch}/include/asm/

  	cd ${OBJTREE}/include

  	mkdir -p asm

  else

  	cd arch/${arch}/include

  fi

  rm -f asm/arch

  if [ -z "${soc}" ] ; then
  	ln -s ${LNPREFIX}arch-${cpu} asm/arch

  else

  	ln -s ${LNPREFIX}arch-${soc} asm/arch

  fi

  if [ "${arch}" = "arm" ] ; then

  	rm -f asm/proc
  	ln -s ${LNPREFIX}proc-armv asm/proc

  fi

  if [ "$SRCTREE" = "$OBJTREE" ] ; then
  	cd ${SRCTREE}/include
  fi

  #
  # Create include file for Make
  #

  ( echo "ARCH   = ${arch}"
      if [ ! -z "$spl_cpu" ] ; then
  	echo 'ifeq ($(CONFIG_SPL_BUILD),y)'
  	echo "CPU    = ${spl_cpu}"
  	echo "else"
  	echo "CPU    = ${cpu}"
  	echo "endif"
      else
  	echo "CPU    = ${cpu}"
      fi
      echo "BOARD  = ${board}"
  
      [ "${vendor}" ] && echo "VENDOR = ${vendor}"
      [ "${soc}"    ] && echo "SOC    = ${soc}"
      exit 0 ) > config.mk

  # Assign board directory to BOARDIR variable

  if [ -z "${vendor}" ] ; then
      BOARDDIR=${board}

  else

      BOARDDIR=${vendor}/${board}

  fi

  #
  # Create board specific header file
  #
  if [ "$APPEND" = "yes" ]	# Append to existing config file
  then
  	echo >> config.h
  else
  	> config.h		# Create new config file
  fi
  echo "/* Automatically generated - do not edit */" >>config.h

  
  for i in ${TARGETS} ; do

  	i="`echo ${i} | sed '/=/ {s/=/	/;q; } ; { s/$/	1/; }'`"

  	echo "#define CONFIG_${i}" >>config.h ;

  done

  echo "#define CONFIG_SYS_ARCH  \"${arch}\""  >> config.h
  echo "#define CONFIG_SYS_CPU   \"${cpu}\""   >> config.h
  echo "#define CONFIG_SYS_BOARD \"${board}\"" >> config.h
  
  [ "${vendor}" ] && echo "#define CONFIG_SYS_VENDOR \"${vendor}\"" >> config.h
  
  [ "${soc}"    ] && echo "#define CONFIG_SYS_SOC    \"${soc}\""    >> config.h

  cat << EOF >> config.h
  #define CONFIG_BOARDDIR board/$BOARDDIR

  #include <config_cmd_defaults.h>

  #include <config_defaults.h>

  #include <configs/${CONFIG_NAME}.h>

  #include <asm/config.h>

  #include <config_fallbacks.h>

  #include <config_uncmd_spl.h>

  EOF

  
  exit 0