#!/bin/bash
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INST_DRIVER=0
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PRJ_PATH=`pwd`
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IMG_PATH=${PRJ_PATH}/../images/bin
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BOARD=imx6ull
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CROSS_TOOL=/opt/buildroot/cortexA7/bin/arm-linux-
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# linux kernel tarball path and branch
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TAR_PATH=${PRJ_PATH}/../tarball
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BSP_BRANCH=lf-5.10.52-2.1.0
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BOOT=emmc
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LINUX_SRC=linux-imx
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PATCH_FILE=${PRJ_PATH}/patch/${LINUX_SRC}-${BOARD}.patch
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CONF_FILE=.cfg-${BOARD}
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JOBS=`cat /proc/cpuinfo | grep processor | wc -l`
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set -u
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set -e
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STAGE=0
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function msg_banner()
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{
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STAGE=`expr $STAGE + 1`
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echo ""
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echo "+---------------------------------------------+"
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printf " Stage $STAGE: $1\n"
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echo "+---------------------------------------------+"
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echo ""
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}
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function do_fetch()
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{
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msg_banner "Fetch ${LINUX_SRC} source code"
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if [ -d ${LINUX_SRC} ] ; then
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printf "\n\n -- ${LINUX_SRC} fetched already -- \n\n"
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return 0;
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fi
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printf "\n -- decompress ${LINUX_SRC}-${BSP_BRANCH}.tar.xz now ... -- \n\n"
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tar -xJf ${TAR_PATH}/${LINUX_SRC}-${BSP_BRANCH}.tar.xz
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}
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function do_patch()
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{
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msg_banner "Patch for ${LINUX_SRC} source code"
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cd ${LINUX_SRC}
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if [ ! -s $CONF_FILE -a -s $PATCH_FILE ] ; then
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patch -p1 < $PATCH_FILE
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fi
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printf "\n\nModify cross compiler in Makefile: $CROSS_TOOL\n\n"
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sed -i -e "s|^CROSS_COMPILE=.*|CROSS_COMPILE=${CROSS_TOOL}|g" Makefile
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cd ${PRJ_PATH}
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}
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function do_build()
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{
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msg_banner "Build for ${LINUX_SRC} source code"
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cd ${LINUX_SRC}
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if [ ! -f .config ] ; then
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cp $CONF_FILE .config
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fi
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make -j ${JOBS}
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cd ${PRJ_PATH}
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}
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function do_install()
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{
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msg_banner "Install linux kernel image"
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cd ${LINUX_SRC}
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mkdir -p ${IMG_PATH}
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cp arch/arm/boot/zImage ${IMG_PATH}
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cp arch/arm/boot/dts/imx6ul-14x14-evk-emmc.dtb ${IMG_PATH}/${BOARD}-${BOOT}.dtb
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cp arch/arm/boot/zImage /tftp
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cp arch/arm/boot/dts/imx6ul-14x14-evk-emmc.dtb /tftp/${BOARD}-${BOOT}.dtb
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if [ $INST_DRIVER != 0 ] ;then
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make modules_install INSTALL_MOD_PATH=${PRJ_PATH}/../rootfs INSTALL_MOD_STRIP=1
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fi
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cd ${PRJ_PATH}
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}
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function do_clean()
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{
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msg_banner "Clean ${LINUX_SRC} source code"
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cd ${LINUX_SRC}
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cp .config $CONF_FILE
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make distclean
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cd ${PRJ_PATH}
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}
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function gen_patch()
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{
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do_clean
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mv ${LINUX_SRC} ${LINUX_SRC}-${BOARD}
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do_fetch
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msg_banner "Generate ${LINUX_SRC} patch file"
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set +e
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diff -Nuar ${LINUX_SRC} ${LINUX_SRC}-${BOARD} > ${LINUX_SRC}-${BOARD}.patch
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rm -rf ${LINUX_SRC}
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mv ${LINUX_SRC}-${BOARD} ${LINUX_SRC}
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}
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if [[ $# == 1 ]] && [[ $1 == "patch" ]] ; then
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gen_patch
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exit 0;
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fi
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do_fetch
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do_patch
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do_build
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do_install
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