#!/bin/bash
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# this project absolute path
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PRJ_PATH=$(cd $(dirname "${BASH_SOURCE[0]}") && pwd)
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# top project absolute path
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TOP_PATH=$(realpath $PRJ_PATH/..)
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# binaries build prefix install path
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PRFX_PATH=$PRJ_PATH/install
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# binaries finally install path if needed
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#INST_PATH=/tftp
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# config file path
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CONF_FILE=$TOP_PATH/config.json
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# shell script will exit once get command error
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set -e
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#+-------------------------+
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#| Shell script functions |
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#+-------------------------+
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function pr_error() {
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echo -e "\033[40;31m $1 \033[0m"
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}
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function pr_warn() {
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echo -e "\033[40;33m $1 \033[0m"
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}
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function pr_info() {
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echo -e "\033[40;32m $1 \033[0m"
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}
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# parser configure file and export environment variable
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function export_env()
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{
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export BOARD=`jq -r ".bsp.board" $CONF_FILE | tr 'A-Z' 'a-z'`
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export BSP_VER=`jq -r ".bsp.version" $CONF_FILE | tr 'A-Z' 'a-z'`
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export GIT_URL=`jq -r ".bsp.giturl" $CONF_FILE | tr 'A-Z' 'a-z'`
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export CROSS_COMPILE=`jq -r ".bsp.cortexAtool" $CONF_FILE | tr 'A-Z' 'a-z'`
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export SRCS="linux-imx"
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export BRANCH=$BSP_VER
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export KER_PATH=$PRJ_PATH/linux-imx
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export JOBS=`cat /proc/cpuinfo | grep processor | wc -l`
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if [[ $BOARD =~ mx6ull ]] ; then
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export ARCH=arm
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else
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export ARCH=arm64
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fi
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}
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function build_kernel()
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{
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defconfig=${BOARD}_defconfig
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patch_file=$PRJ_PATH/patches/$BOARD/linux-imx-$BSP_VER.patch
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cd $PRJ_PATH
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if [ -d $KER_PATH ] ; then
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pr_info "linux kernel source code fetched already"
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else
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pr_info "start fetch linux kernel source code"
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git clone $GIT_URL/linux-imx.git -b $BRANCH --depth=1
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fi
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pr_info "Start build linux kernel source code"
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cd $KER_PATH
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if [ ! -s arch/$ARCH/configs/$defconfig -a -s $patch_file ] ; then
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pr_warn "do patch for $KER_PATH now..."
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patch -p1 < $patch_file
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fi
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if [ ! -s .config ] ; then
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make ${defconfig}
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fi
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make -j ${JOBS}
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}
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function do_install()
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{
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pr_info "start install linux kernel images"
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cd $KER_PATH
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if [ -d $PRFX_PATH ] ; then
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rm -rf $PRFX_PATH/*
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fi
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mkdir -p $PRFX_PATH/overlays
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# Install system image and device tree binaries
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if [[ $BOARD =~ 6ull ]] ; then
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set -x
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cp -f arch/${ARCH}/boot/zImage $PRFX_PATH
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cp -f arch/${ARCH}/boot/dts/${BOARD}.dtb $PRFX_PATH
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cp -f arch/${ARCH}/boot/dts/${BOARD}/*.dtbo $PRFX_PATH/overlays
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set +x
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else
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set -x
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cp -f arch/${ARCH}/boot/Image $PRFX_PATH
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cp -f arch/${ARCH}/boot/dts/freescale/${BOARD}.dtb $PRFX_PATH
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cp -f arch/${ARCH}/boot/dts/freescale/${BOARD}/*.dtbo $PRFX_PATH/overlays
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set +x
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fi
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# Install kernel modules
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make modules_install INSTALL_MOD_PATH=$PRFX_PATH INSTALL_MOD_STRIP=1
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echo ""
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pr_info "linux kernel installed to '$PRFX_PATH'"
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ls $PRFX_PATH && echo ""
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if [[ -n "$INST_PATH" && -w $INST_PATH ]] ; then
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pr_info "install linux kernel to '$INST_PATH'"
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cp -f $PRFX_PATH/*Image $INST_PATH
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cp -f $PRFX_PATH/${BOARD}.dtb $INST_PATH
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fi
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}
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function do_build()
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{
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cd $PRJ_PATH
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build_kernel
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do_install
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}
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function do_clean()
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{
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cd $PRJ_PATH
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for d in $SRCS
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do
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rm -rf $PRJ_PATH/$d
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done
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rm -rf $PRFX_PATH
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}
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#+-------------------------+
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#| Shell script body entry |
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#+-------------------------+
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export_env
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if [[ $# == 1 && $1 == -c ]] ;then
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pr_warn "start clean linux kernel"
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do_clean
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exit;
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fi
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pr_warn "start build linux kernel for ${BOARD}"
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do_build
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