RP-PX30平台uboot编译脚本分析一：概览

#!/bin/sh
set -e
BOARD=$1
SUBCMD=$1
FUNCADDR=$1
JOB=`sed -n "N;/processor/p" /proc/cpuinfo|wc -l`
echo JOB= $JOB
SUPPORT_LIST=`ls configs/*[r,p][x,v,k][0-9][0-9]*_defconfig`
echo SUPPORT_LIST= $SUPPORT

########################################### User can modify #############################################
# User's rkbin tool relative path
RKBIN_TOOLS=../rkbin/tools

# User's GCC toolchain and relative path
ADDR2LINE_ARM32=arm-linux-gnueabihf-addr2line
ADDR2LINE_ARM64=aarch64-linux-gnu-addr2line
OBJ_ARM32=arm-linux-gnueabihf-objdump
OBJ_ARM64=aarch64-linux-gnu-objdump
GCC_ARM32=arm-linux-gnueabihf-
GCC_ARM64=aarch64-linux-gnu-
TOOLCHAIN_ARM32=../prebuilts/gcc/linux-x86/arm/gcc-linaro-6.3.1-2017.05-x86_64_arm-linux-gnueabihf/bin
TOOLCHAIN_ARM64=../prebuilts/gcc/linux-x86/aarch64/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin



########################################### User not touch #############################################
# Declare global INI file searching index name for every chip, update in fixup_platform_configure()
RKCHIP=

# Declare global rkbin RKTOOLS and rkbin repository path, updated in prepare()
RKTOOLS=
RKBIN=

# Declare global toolchain path for CROSS_COMPILE, updated in select_toolchain()
TOOLCHAIN_GCC=
TOOLCHAIN_OBJDUMP=
TOOLCHAIN_ADDR2LINE=

# Declare global default output dir and cmd, update in prepare()
OUTDIR=$2
OUTOPT=

# Declare global plaform configure, updated in fixup_platform_configure()
PLATFORM_RSA=
PLATFORM_SHA=
PLATFORM_UBOOT_IMG_SIZE=
PLATFORM_TRUST_IMG_SIZE=
PLATFORM_AARCH32=
##########################################################################################################以上都是变量宏和一些编译器目录，编译操作在最下面


help()
{
    echo
    echo "Usage: ./make.sh [board|subcmd] [O=]"
    echo
    echo "Example:"
    echo
    echo "1. Build:"
    echo "    ./make.sh evb-rk3399         ---- build for evb-rk3399_defconfig"
    echo "    ./make.sh evb-rk3399 O=rockdev  ---- build for evb-rk3399_defconfig with output dir "./rockdev""
    echo "    ./make.sh firefly-rk3288     ---- build for firefly-rk3288_defconfig"
    echo "    ./make.sh            ---- build with exist .config"
    echo
    echo "    After build, images of uboot, loader and trust are all generated."
    echo
    echo "2. Subcmd helper:"
    echo "    ./make.sh trust        --- pack trust.img without rebuild project"
    echo "    ./make.sh loader    --- pack loader bin without rebuild project"
    echo "    ./make.sh uboot        --- pack uboot.img without rebuild project"
    echo
    echo "3. Debug helper:"
    echo "    ./make.sh elf        --- dump elf file with -D(default)"
    echo "    ./make.sh elf-S        --- dump elf file with -S"
    echo "    ./make.sh     --- dump function name and code position of address"
    echo "    ./make.sh map        --- cat u-boot.map"
    echo "    ./make.sh sym        --- cat u-boot.sym"
}

prepare()
{
    local absolute_path cmd dir count

    # Parse output directory 'O='
    cmd=${OUTDIR%=*}
    if [ "${cmd}" = 'O' ]; then
        OUTDIR=${OUTDIR#*=}
        OUTOPT=O=${OUTDIR}
    else
        case $BOARD in
            #Help
            --help|-help|help|--h|-h)
            echo "HELP--" 
            help
            exit 0
            ;;

            # Parse from exit .config
            ''|elf*|trust|loader|uboot|map|sym)
            count=`find -name .config | wc -l`
            dir=`find -name .config`
            echo "BOARD = "  $BOARD

            # Good, find only one .config
            if [ $count -eq 1 ]; then
                dir=${dir%/*}
                OUTDIR=${dir#*/}
                echo "dir = "  $dir
                echo OUTDIR= $OUTDIR

                # Set OUTOPT if not current directory
                if [ $OUTDIR != '.' ]; then
                    OUTOPT=O=${OUTDIR}
                fi
                echo "OUTOPT = " $OUTOPT

            elif [ $count -eq 0 ]; then
                echo
                echo "Build failed, Can't find .config"
                help
                exit 1
            else
                echo
                echo "Build failed, find $count '.config': "
                echo "$dir"
                echo "Please leave only one of them"
                exit 1
            fi
            ;;

            *)
            OUTDIR=.
            ;;
        esac
    fi

    # Parse help and make defconfig
    case $BOARD in
        #Help
        --help|-help|help|--h|-h)
        help
        exit 0
        ;;

        #Subcmd
        ''|elf*|trust|loader|uboot|map|sym)
        ;;

        *)
        #Func address is valid ?
        if [ -z $(echo ${FUNCADDR} | sed 's/[0-9,a-f,A-F]//g') ]; then
            return
        elif [ ! -f configs/${BOARD}_defconfig ]; then
            echo
            echo "Can't find: configs/${BOARD}_defconfig"
            echo
            echo "******** Rockchip Support List *************"
            echo "${SUPPORT_LIST}"
            echo "********************************************"
            echo
            exit 1
        else
            echo "make for ${BOARD}_defconfig by -j${JOB}"
            make ${BOARD}_defconfig ${OUTOPT}
        fi
        ;;
    esac

    # Initialize RKBIN and RKTOOLS
    if [ -d ${RKBIN_TOOLS} ]; then
        absolute_path=$(cd `dirname ${RKBIN_TOOLS}`; pwd)
        RKBIN=${absolute_path}
        RKTOOLS=${absolute_path}/tools
    else
        echo
        echo "Can't find '../rkbin/' repository, please download it before pack image!"
        echo "How to obtain? 3 ways:"
        echo "    1. Login your Rockchip gerrit account: \"Projects\" -> \"List\" -> search \"rk/rkbin\" repository"
        echo "    2. Github repository: https://github.com/rockchip-linux/rkbin"
        echo "    3. Download full release SDK repository"
        exit 1
    fi
}

select_toolchain()
{
    local absolute_path

    if grep  -q '^CONFIG_ARM64=y' ${OUTDIR}/.config ; then
        if [ -d ${TOOLCHAIN_ARM64} ]; then
            absolute_path=$(cd `dirname ${TOOLCHAIN_ARM64}`; pwd)
            TOOLCHAIN_GCC=${absolute_path}/bin/${GCC_ARM64}
            TOOLCHAIN_OBJDUMP=${absolute_path}/bin/${OBJ_ARM64}
            TOOLCHAIN_ADDR2LINE=${absolute_path}/bin/${ADDR2LINE_ARM64}
        else
            echo "Can't find toolchain: ${TOOLCHAIN_ARM64}"
            exit 1
        fi
    else
        if [ -d ${TOOLCHAIN_ARM32} ]; then
            absolute_path=$(cd `dirname ${TOOLCHAIN_ARM32}`; pwd)
            TOOLCHAIN_GCC=${absolute_path}/bin/${GCC_ARM32}
            TOOLCHAIN_OBJDUMP=${absolute_path}/bin/${OBJ_ARM32}
            TOOLCHAIN_ADDR2LINE=${absolute_path}/bin/${ADDR2LINE_ARM32}
        else
            echo "Can't find toolchain: ${TOOLCHAIN_ARM32}"
            exit 1
        fi
    fi

    # echo "toolchain: ${TOOLCHAIN_GCC}"
}

sub_commands()
{
    local cmd=${SUBCMD%-*} elfopt=${SUBCMD#*-}

    case $cmd in
        elf)
        if [ ! -f ${OUTDIR}/u-boot ]; then
            echo "Can't find elf file: ${OUTDIR}/u-boot"
            exit 1
        else
            # default 'cmd' without option, use '-D'
            if [ "${cmd}" = 'elf' -a "${elfopt}" = 'elf' ]; then
                elfopt=D
            fi
            ${TOOLCHAIN_OBJDUMP} -${elfopt} ${OUTDIR}/u-boot | less
            exit 0
        fi
        ;;

        map)
        cat ${OUTDIR}/u-boot.map | less
        exit 0
        ;;

        sym)
        cat ${OUTDIR}/u-boot.sym | less
        exit 0
        ;;

        trust)
        pack_trust_image
        exit 0
        ;;

        loader)
        pack_loader_image
        exit 0
        ;;

        uboot)
        pack_uboot_image
        exit 0
        ;;

        *)
        # Search function and code position of address
        if [ -z $(echo ${FUNCADDR} | sed 's/[0-9,a-f,A-F]//g') ] && [ ${FUNCADDR} ]; then
            echo
            sed -n "/${FUNCADDR}/p" ${OUTDIR}/u-boot.sym
            ${TOOLCHAIN_ADDR2LINE} -e ${OUTDIR}/u-boot ${FUNCADDR}
            exit 0
        fi
        ;;
    esac
}

# Support platform special configure
#    1. fixup chip name;
#    2. fixup pack mode;
#    3. fixup image size
#    4. fixup ARM64 cpu boot with AArch32
fixup_platform_configure()
{
    local count plat

# <1> Get RKCHIP for searching trust/loader ini files
    count=`grep -c '^CONFIG_ROCKCHIP_[R,P][X,V,K][0-9][0-9]' ${OUTDIR}/.config`
    RKCHIP=`grep '^CONFIG_ROCKCHIP_[R,P][X,V,K][0-9][0-9]' ${OUTDIR}/.config`

    if [ $count -eq 1 ]; then
        RKCHIP=${RKCHIP%=*}
        RKCHIP=${RKCHIP##*_}
    elif [ $count -gt 1 ]; then
        # Is RK3126 ?
        plat=`grep '^CONFIG_ROCKCHIP_[R,P][X,V,K][0-9][0-9]' ${OUTDIR}/.config | sed -n "/CONFIG_ROCKCHIP_RK3126=y/p"`
        if [ "$plat" = 'CONFIG_ROCKCHIP_RK3126=y' ]; then
            RKCHIP=RK3126
        fi
        # Is RK3326 ?
        plat=`grep '^CONFIG_ROCKCHIP_[R,P][X,V,K][0-9][0-9]' ${OUTDIR}/.config | sed -n "/CONFIG_ROCKCHIP_RK3326=y/p"`
        if [ "$plat" = 'CONFIG_ROCKCHIP_RK3326=y' ]; then
            RKCHIP=RK3326
        fi
    else
        echo "Can't get Rockchip SoC definition in .config"
        exit 1
    fi

# <2> Fixup rsa/sha pack mode for platforms
    # RK3308/PX30/RK3326 use RSA-PKCS1 V2.1, it's pack magic is "3"
    if [ $RKCHIP = "PX30" -o $RKCHIP = "RK3326" -o $RKCHIP = "RK3308" ]; then
        PLATFORM_RSA="--rsa 3"
    # RK3368 use rk big endian SHA256, it's pack magic is "2"
    elif [ $RKCHIP = "RK3368" ]; then
        PLATFORM_SHA="--sha 2"
    # other platforms use default configure
    fi

# <3> Fixup images size pack for platforms
    if [ $RKCHIP = "RK3308" ]; then
        if grep -q '^CONFIG_ARM64_BOOT_AARCH32=y' ${OUTDIR}/.config ; then
            PLATFORM_UBOOT_IMG_SIZE="--size 512 2"
            PLATFORM_TRUST_IMG_SIZE="--size 512 2"
        else
            PLATFORM_UBOOT_IMG_SIZE="--size 1024 2"
            PLATFORM_TRUST_IMG_SIZE="--size 1024 2"
        fi
    fi

# <4> Fixup PLATFORM_AARCH32 for ARM64 cpu platforms
    if [ $RKCHIP = "RK3308" ]; then
        if grep -q '^CONFIG_ARM64_BOOT_AARCH32=y' ${OUTDIR}/.config ; then
            PLATFORM_AARCH32="AARCH32"
        fi
    fi
}

pack_uboot_image()
{
    local UBOOT_LOAD_ADDR

    UBOOT_LOAD_ADDR=`sed -n "/CONFIG_SYS_TEXT_BASE=/s/CONFIG_SYS_TEXT_BASE=//p" ${OUTDIR}/include/autoconf.mk|tr -d '\r'`
    ${RKTOOLS}/loaderimage --pack --uboot ${OUTDIR}/u-boot.bin uboot.img ${UBOOT_LOAD_ADDR} ${PLATFORM_UBOOT_IMG_SIZE}

    # Delete u-boot.img and u-boot-dtb.img, which makes users not be confused with final uboot.img
    if [ -f ${OUTDIR}/u-boot.img ]; then
        rm ${OUTDIR}/u-boot.img
    fi

    if [ -f ${OUTDIR}/u-boot-dtb.img ]; then
        rm ${OUTDIR}/u-boot-dtb.img
    fi

    echo "pack uboot okay! Input: ${OUTDIR}/u-boot.bin"
}

pack_loader_image()
{
    local files ini

    if [ ! -f ${RKBIN}/RKBOOT/${RKCHIP}MINIALL.ini ]; then
        echo "pack loader failed! Can't find: ${RKBIN}/RKBOOT/${RKCHIP}MINIALL.ini"
        return
    fi

    cd ${RKBIN}
    files=`ls ${RKBIN}/RKBOOT/${RKCHIP}MINIALL*.ini`
    for ini in $files
    do
        if [ -f "$ini" ]; then
            ${RKTOOLS}/boot_merger --replace tools/rk_tools/ ./ $ini
            echo "pack loader okay! Input: $ini"
        fi
    done

    cd - && mv ${RKBIN}/*_loader_*.bin ./
}

pack_trust_image()
{
    local TOS TOS_TA DARM_BASE TEE_LOAD_ADDR TEE_OFFSET=0x8400000

    # ARM64 uses trust_merger
    if grep -Eq ''^CONFIG_ARM64=y'|'^CONFIG_ARM64_BOOT_AARCH32=y'' ${OUTDIR}/.config ; then
        if [ ! -f ${RKBIN}/RKTRUST/${RKCHIP}${PLATFORM_AARCH32}TRUST.ini ]; then
            echo "pack trust failed! Can't find: ${RKBIN}/RKTRUST/${RKCHIP}${PLATFORM_AARCH32}TRUST.ini"
            return
        fi

        cd ${RKBIN}
        ${RKTOOLS}/trust_merger ${PLATFORM_SHA} ${PLATFORM_RSA} ${PLATFORM_TRUST_IMG_SIZE} --replace tools/rk_tools/ ./ ${RKBIN}/RKTRUST/${RKCHIP}${PLATFORM_AARCH32}TRUST.ini

        cd - && mv ${RKBIN}/trust.img ./trust.img
        echo "pack trust okay! Input: ${RKBIN}/RKTRUST/${RKCHIP}${PLATFORM_AARCH32}TRUST.ini"
    # ARM uses loaderimage
    else
        if [ ! -f ${RKBIN}/RKTRUST/${RKCHIP}TOS.ini ]; then
            echo "pack trust failed! Can't find: ${RKBIN}/RKTRUST/${RKCHIP}TOS.ini"
            return
        fi

        # OP-TEE is 132M(0x8400000) offset from DRAM base.
        DARM_BASE=`sed -n "/CONFIG_SYS_SDRAM_BASE=/s/CONFIG_SYS_SDRAM_BASE=//p" ${OUTDIR}/include/autoconf.mk|tr -d '\r'`
        TEE_LOAD_ADDR=$((DARM_BASE+TEE_OFFSET))

        # Convert Dec to Hex
        TEE_LOAD_ADDR=$(echo "obase=16;${TEE_LOAD_ADDR}"|bc)

        # Parse orignal path
        TOS=`sed -n "/TOS=/s/TOS=//p" ${RKBIN}/RKTRUST/${RKCHIP}TOS.ini|tr -d '\r'`
        TOS_TA=`sed -n "/TOSTA=/s/TOSTA=//p" ${RKBIN}/RKTRUST/${RKCHIP}TOS.ini|tr -d '\r'`

        # replace "./tools/rk_tools/" with "./" to compatible legacy ini content of rkdevelop branch
        TOS=$(echo ${TOS} | sed "s/tools\/rk_tools\//\.\//g")
        TOS_TA=$(echo ${TOS_TA} | sed "s/tools\/rk_tools\//\.\//g")

        if [ $TOS_TA -a $TOS ]; then
            ${RKTOOLS}/loaderimage --pack --trustos ${RKBIN}/${TOS} ./trust.img ${TEE_LOAD_ADDR} ${PLATFORM_TRUST_IMG_SIZE}
            ${RKTOOLS}/loaderimage --pack --trustos ${RKBIN}/${TOS_TA} ./trust_with_ta.img ${TEE_LOAD_ADDR} ${PLATFORM_TRUST_IMG_SIZE}
            echo "Both trust.img and trust_with_ta.img are ready"
        elif [ $TOS ]; then
            ${RKTOOLS}/loaderimage --pack --trustos ${RKBIN}/${TOS} ./trust.img ${TEE_LOAD_ADDR} ${PLATFORM_TRUST_IMG_SIZE}
            echo "trust.img is ready"
        elif [ $TOS_TA ]; then
            ${RKTOOLS}/loaderimage --pack --trustos ${RKBIN}/${TOS_TA} ./trust.img ${TEE_LOAD_ADDR} ${PLATFORM_TRUST_IMG_SIZE}
            echo "trust.img with ta is ready"
        else
            echo "Can't find any tee bin"
            exit 1
        fi

        echo "pack trust okay! Input: ${RKBIN}/RKTRUST/${RKCHIP}TOS.ini"
    fi
}

finish()
{
    echo
    if [ "$BOARD" = '' ]; then
        echo "Platform ${RKCHIP}${PLATFORM_AARCH32} is build OK, with exist .config"
    else
        echo "Platform ${RKCHIP}${PLATFORM_AARCH32} is build OK, with new .config(make ${BOARD}_defconfig)"
    fi
}
echo "test prepare "
prepare
select_toolchain
fixup_platform_configure
sub_commands
make CROSS_COMPILE=${TOOLCHAIN_GCC}  all --jobs=${JOB} ${OUTOPT}
pack_uboot_image
pack_loader_image
pack_trust_image

finish

 

首先，看起来特别多，那我们就屏蔽一部分慢慢分析。

这里我们知道，这个脚本主要干的活是：
prepare

这个，执行make xxx_defconfig 来生成整个编译过程依赖的配置文件 .config
select_toolchain

这个，根据.config选择工具链的目标，填充脚本的变量

fixup_platform_configure

这个，填充平台配置信息，和CPU相关的信息，也是要依赖于.config

sub_commands

次级命令，用来执行''|elf*|trust|loader|uboot|map|sym

make CROSS_COMPILE=${TOOLCHAIN_GCC}  all --jobs=${JOB} ${OUTOPT}

这里正式编译，调用uboot目录下的Makefile，后续也要分析一下

pack_uboot_image

打包uboot镜像

pack_loader_image

打包loader镜像

pack_trust_image

打包trust镜像

 

finish

打印一下完成信息