#!/bin/bash
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# Description: This shell script used to build linux system SDK. You can
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# use command line argument to specify build target, or select
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# it by hand if no argument given by command line. More detail
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# information can refer to the help message.
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#
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# Author: guowenxue <guowenxue@gmail.com>
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# Version: 1.0.0
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PROJ_PATH=`pwd`
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CROSSTOOL=/opt/buildroot/cortex-a5/bin/arm-linux-
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BOARD=sama5d4
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PACK_PATH=${PROJ_PATH}/tarballs
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PATCH_PATH=${PROJ_PATH}/patches
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PATCH_SUFIX=${BOARD}.patch
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ROOTFS_SRC=rootfs
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ROOTFS_IMG=rootfs-sama5d4.ubi
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TFTP_PATH=/tftp
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IMGS_PATH=images
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target=
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set -e
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function show_help()
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{
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printf "Usage: $1 [system/bootloader/kernel/rootfs/clean]\n\n"
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echo "system : build all source code "
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echo "bootloader: build bootstrap and u-boot "
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echo "kernel : build linux kernel "
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echo "rootfs : build ubifs rootfs images"
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printf "clean : clean the source code\n\n"
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printf "distclean : remove all the source code\n\n"
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exit 0;
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}
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function show_banner()
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{
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echo "+---------------------------------------------+"
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printf "$1\n"
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echo "+---------------------------------------------+"
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}
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function select_target()
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{
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targets=("" "system" "bootloader" "kernel" "rootfs" "clean" "distclean")
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echo "Please select a build target:"
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echo "1 <system> , build all source code "
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echo "2 <bootloader>, build bootstrap and u-boot "
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echo "3 <kernel> , build linux kernel "
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echo "4 <rootfs> , build ubifs rootfs image"
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echo "5 <clean> , clean the source code"
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echo "6 <distclean> , remove all the source code"
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echo ""
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stty erase '^H'
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read -p "Enter your choise [1-6] : " choice
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if [ $choice -gt 6 ] ; then
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echo "ERROR: Invalid input choice, exit now..."
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exit 1;
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fi
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target=${targets[$choice]}
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}
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# Usage: start_build [SRCDIR: linux-at91/at91bootstrap/u-boot-at91 ]
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function start_build()
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{
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SRC_DIR=$1
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if [ ! -d ${SRC_DIR} ] ; then
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show_banner "| start decmpress $SRC_DIR packet |"
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tar -xJf ${PACK_PATH}/${SRC_DIR}.tar.xz
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cd ${SRC_DIR}
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if [ -f ${PATCH_PATH}/${SRC_DIR}-${PATCH_SUFIX} ] ; then
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show_banner "| patch for ${SRC_DIR} |"
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# update cross compiler
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sed -i -e "s|^+CROSSTOOL=.*|+CROSSTOOL=${CROSSTOOL}|g" ${PATCH_PATH}/${SRC_DIR}-${PATCH_SUFIX}
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patch -p1 < ${PATCH_PATH}/${SRC_DIR}-${PATCH_SUFIX}
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fi
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else
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cd ${SRC_DIR}
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fi
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show_banner "| start $SRC_DIR build task... |"
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chmod a+x build.sh
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bash build.sh
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show_banner "| $SRC_DIR build task over! |"
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cd -
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}
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function build_ubifs()
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{
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ubinize_cfg=ubinize.cfg
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ubimg_tmp=ubi.img
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# Rootfs partition size
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partition_size=200 # MiB
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# MT29F4G08: 1 block=64 pages, 1 page = 4096B
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BLOCK_PAGES=64
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PAGE_SIZE=4096
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# Logic Erase Block Size: UBI requires 2 minimum I/O units out of each Physical Erase Block (PEB) for overhead:
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# 1 for maintaining erase count information, and 1 for maintaining the Volume ID information.
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PEB_SIZE=`expr $PAGE_SIZE \* $BLOCK_PAGES`
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LEB_SIZE=`expr $PEB_SIZE - 2 \* $PAGE_SIZE `
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#UBI reserves 4 blocks space for management and bad PEB handling operations
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# 2 PEBs are used to store the UBI volume table
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# 1 PEB is reserved for wear-leveling purposes;
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# 1 PEB is reserved for the atomic LEB change operation;
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# a% of PEBs is reserved for handling bad EBs. The default for NAND is 1%
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PEB_CNT=`expr $partition_size \* 1024 \* 1024 / ${PEB_SIZE}`
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LEB_CNT=`expr $PEB_CNT - 4 - $PEB_CNT \/ 100 `
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#echo "Parition size ${partition_size}MiB and LEB=$LEB_CNT"
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set -x
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printf "\nWARNNING: generete rootfs image need root privilege, please input sudo passwd!\n\n"
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sudo mkfs.ubifs -F -d ${ROOTFS_SRC} -m ${PAGE_SIZE} -e ${LEB_SIZE} -c $LEB_CNT -o ${ubimg_tmp}
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set +x
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# vol_size smaller than the actual size of the partition to leave room for Ubifs internal data.
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# With "vol_type=dynamic", Ubifs will end up using the whole space automatically
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vol_size=`expr ${partition_size} \- 10`
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printf "[ubifs] \nmode=ubi \nimage=${ubimg_tmp} \nvol_id=0 \nvol_size=${vol_size}MiB\n" > $ubinize_cfg
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printf "vol_type=dynamic \nvol_name=rootfs \nvol_flags=autoresize\n" >> $ubinize_cfg
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#cat $ubinize_cfg
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set -x
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ubinize -o ${ROOTFS_IMG} -m ${PAGE_SIZE} -p ${PEB_SIZE} $ubinize_cfg
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set +x
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rm -f $ubimg_tmp $ubinize_cfg
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chmod a+x ${ROOTFS_IMG}
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}
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function build_rootfs()
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{
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if [ ! -d ${ROOTFS_SRC} ] ; then
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printf "\nWARNNING: decompress rootfs need root privilege, please input sudo passwd!\n\n"
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sudo tar -xJf ${PACK_PATH}/${ROOTFS_SRC}.tar.xz
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fi
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show_banner "| start build rootfs image... |"
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build_ubifs
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show_banner "| rootfs image build over! |"
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if [ -d ${IMGS_PATH} ] ; then
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cp -f ${ROOTFS_IMG} ${IMGS_PATH}
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fi
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if [ -d ${TFTP_PATH} ] ; then
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cp -f ${ROOTFS_IMG} ${TFTP_PATH}
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fi
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rm -f ${ROOTFS_IMG}
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ls ${IMGS_PATH}
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}
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function do_clean()
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{
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SRCS="linux-at91 at91bootstrap u-boot-at91"
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show_banner "| clean project source code |"
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for dir in $SRCS
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do
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if [ -d $dir ] ; then
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cd $dir
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bash build.sh clean
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cd -
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fi
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done
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}
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function do_distclean()
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{
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if [ `id -u` != 0 ] ; then
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printf "\nERROR: distclean need root privilege, please use sudo!\n\n"
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exit ;
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fi
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printf "\nWARNNING: Start remove all the source code and images\n\n"
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rm -rf linux-at91 at91bootstrap u-boot-at91 rootfs ${IMGS_PATH}
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}
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function do_build()
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{
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if [ "$target" = "system" ] ; then
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start_build at91bootstrap
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start_build u-boot-at91
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start_build linux-at91
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build_rootfs
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elif [ "$target" = "bootloader" ] ; then
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start_build at91bootstrap
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start_build u-boot-at91
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elif [ "$target" = "kernel" ] ; then
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start_build linux-at91
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elif [ "$target" = "rootfs" ] ; then
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build_rootfs
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elif [ "$target" = "clean" ] ; then
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do_clean
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elif [ "$target" = "distclean" ] ; then
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do_distclean
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else
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show_help
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fi
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}
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mkdir -p ${IMGS_PATH}
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# check input arguments for build target
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if [ $# -ge 1 ] ; then
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target=$1
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else
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select_target
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fi
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show_banner "| choose build target [$target] |"
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do_build
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