uboot配置分析之make100ask24x0_config分析

uboot配置分析之make100ask24x0_config分析

    #!/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) 2002-2006 DENX Software Engineering, Wolfgang Denk <[e-mail]>    #    APPEND=no   # Default: Create new config file    BOARD_NAME=""   # Name to print in make output    #mkconfig 100ask24x0 arm arm920t 100ask24x0 NULL s3c24x0    #判断输入mkconfig的参数有没有--,-a,-n,*    while [ $# -gt 0 ] ; do        case "$1" in        --) shift ; break ;;        -a) shift ; APPEND=yes ;;        -n) shift ; BOARD_NAME="${1%%_config}" ; shift ;;           *)  break ;;        esac    done    #如果BOARD_NAME没有定义，则执行BOARD_NAME=$1    [ "${BOARD_NAME}" ] || BOARD_NAME="$1"    #如果输入的参数小于4个或者大于6个，则退出    [ $# -lt 4 ] && exit 1    [ $# -gt 6 ] && exit 1    #打印到控制台    echo "Configuring for ${BOARD_NAME} board..."    #    # Create link to architecture specific headers    #    #BUILD_DIR没有定义，$SRCTREE" != "$OBJTREE 执行else分支    if [ "$SRCTREE" != "$OBJTREE" ] ; then        mkdir -p ${OBJTREE}/include        mkdir -p ${OBJTREE}/include2        cd ${OBJTREE}/include2        rm -f asm        ln -s ${SRCTREE}/include/asm-$2 asm        LNPREFIX="../../include2/asm/"        cd ../include        rm -rf asm-$2        rm -f asm        mkdir asm-$2        ln -s asm-$2 asm    else    #cd /include && ln -s asm-arm asm        cd ./include        rm -f asm        ln -s asm-$2 asm    fi    rm -f asm-$2/arch    if [ -z "$6" -o "$6" = "NULL" ] ; then #if $6 为空或者NULL,$6不为空或者NULL        ln -s ${LNPREFIX}arch-$3 asm-$2/arch    else        ln -s ${LNPREFIX}arch-$6 asm-$2/arch #LNPREFIX 未定义，ln -s arch-s3c24x0 asm-arm/arch    fi    if [ "$2" = "arm" ] ; then         rm -f asm-$2/proc        ln -s ${LNPREFIX}proc-armv asm-$2/proc #ls -s proc-armv asm-arm/proc    fi    #    # Create include file for Make    #    echo "ARCH   = $2" >  config.mk #creat file /include/config.mk    echo "CPU    = $3" >> config.mk     echo "BOARD  = $4" >> config.mk    [ "$5" ] && [ "$5" != "NULL" ] && echo "VENDOR = $5" >> config.mk #$5 = NUll    [ "$6" ] && [ "$6" != "NULL" ] && echo "SOC    = $6" >> config.mk #echo SOC = s3c24x0 >>config.mk    #    #/include/config.mk 的内容如下    #    #ARCH = arm    #CPU  = arm920t    #BOARD = 100ask24x0    #SOC = s3c24x0     #    # Create board specific header file    #    #APPEND = no    if [ "$APPEND" = "yes" ]   # Append to existing config file     then        echo >> config.h    #creat file /include/config.h    else        > config.h      # Create new config file    fi    echo "/* Automatically generated - do not edit */" >>config.h    echo "#include <configs/$1.h>" >>config.h    exit 0    #    #/include/config.h的内容如下    #    #/* Automatically generated - do not edit */    #include <configs/100ask24x0.h>