uboot mkconfig记录

 

#!/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 <[email protected]>
#

#将开发板参数传入

#表示不在后面添加而是新建一个配置文件config.h
APPEND=no # Default: Create new config file
#开发板的名称默认为空
BOARD_NAME="" # Name to print in make output

#用户传递的配置参数大于0
# $#表示输入进来的参数个数，-gt（great than）表示左边大于右边则返回真
# SHELL常用内部参数：　　
# $# ----传递给程序的总的参数数目
# $? ----上一个代码或者shell程序在shell中退出的情况，如果正常退出则返回0，反之为非0值。
# $* ----传递给程序的所有参数组成的字符串。
# $n ----表示第几个参数，$1 表示第一个参数，$2 表示第二个参数 ...
# $0 ----当前程序的名称
# $@----以"参数1" "参数2" ... 形式保存所有参数
# $$ ----本程序的(进程ID号)PID
# $! ----上一个命令的PID
#shift为$1=$2.。。以此类推

while [ $# -gt 0 ] ; do
 case "$1" in
 --) shift ; break ;;
 -a) shift ; APPEND=yes ;;
 -n) shift ; BOARD_NAME="${1%%_config}" ; shift ;;
 *)  break ;;
 esac
done

#判断开发板的名字是否已经设置 如果没设置的话用第一个参数来设置开发板的名字smdk6410
[ "${BOARD_NAME}" ] || BOARD_NAME="$1"

[ $# -lt 4 ] && exit 1
[ $# -gt 8 ] && exit 1

echo "Configuring for ${BOARD_NAME} board which boot from $7 $8..."

#
# Create link to architecture specific headers
#
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
 rm -f asm
 ln -s asm-$2 asm
fi

rm -f asm-$2/arch

#判断第6个参数为空或者为NULL
if [ -z "$6" -o "$6" = "NULL" ] ; then
 ln -s ${LNPREFIX}arch-$3 asm-$2/arch
else
 ln -s ${LNPREFIX}arch-$6 asm-$2/arch
fi

# create link for s3c24xx SoC
if [ "$3" = "s3c24xx" ] ; then
 rm -f regs.h
 ln -s $6.h regs.h
 rm -f asm-$2/arch
 ln -s arch-$3 asm-$2/arch
fi

# create link for s3c64xx SoC
if [ "$3" = "s3c64xx" ] ; then
 rm -f regs.h
 ln -s $6.h regs.h
 rm -f asm-$2/arch
 ln -s arch-$3 asm-$2/arch
fi

if [ "$2" = "arm" ] ; then
 rm -f asm-$2/proc
 ln -s ${LNPREFIX}proc-armv asm-$2/proc
fi

# create link for s3c64xx-mp SoC
if [ "$3" = "s3c64xx-mp" ] ; then
 rm -f regs.h
 ln -s $6.h regs.h
 rm -f asm-$2/arch
 ln -s arch-$3 asm-$2/arch
fi

#
# Create include file for Make
#
echo "ARCH   = $2" >  config.mk
echo "CPU    = $3" >> config.mk
echo "BOARD  = $4" >> config.mk

[ "$5" ] && [ "$5" != "NULL" ] && echo "VENDOR = $5" >> config.mk

[ "$6" ] && [ "$6" != "NULL" ] && echo "SOC    = $6" >> config.mk

#
# Create board specific header file
#
if [ "$APPEND" = "yes" ] # Append to existing config file
then
 echo >> config.h
else
 > config.h  # Create new config file
fi
echo "/* Automatically generated - do not edit */" >>config.h
case $7 in
SD)
 echo "#define FRIENDLYARM_BOOT_MEDIA_SD"   >> config.h
 ;;
NAND)
 echo "#define FRIENDLYARM_BOOT_MEDIA_NAND" >> config.h
 ;;
*)
 ;;
esac
case $8 in
ram128)
 echo "#define FRIENDLYARM_BOOT_RAM128" >> config.h
 ;;
ram256)
 echo "#define FRIENDLYARM_BOOT_RAM256" >> config.h
 ;;
*)
 ;;
esac
echo "#include <configs/$1.h>" >>config.h

exit 0