arm核：arm920t 2410
uboot版本：u-boot1.1.6
通过readme可以知道配置执行make smdk2410_config命令。
顶层Makefile :
1 smdk2410_config : unconfig 2 @$(MKCONFIG) $(@:_config=) arm arm920t smdk2410 NULL s3c24x0
上面将smdk2410 arm arm920t smdk2410 null s3c2x0 六个参数穿个mkconfig.下面看顶层mkconfig文件：
1 #!/bin/sh -e 2 3 # Script to create header files and links to configure 4 # U-Boot for a specific board. 5 # 6 # Parameters: Target Architecture CPU Board [VENDOR] [SOC] 7 # 8 # (C) 2002-2006 DENX Software Engineering, Wolfgang Denk <wd@denx.de> 9 # 10 11 APPEND=no # Default: Create new config file 12 BOARD_NAME="" # Name to print in make output 13 14 while [ $# -gt 0 ] ; do @@$(MKCONFIG) $(@:_config=) arm arm920t smdk2410 NULL s3c24x0 15 case "$1" in @因为上面的$(@:_config=)把smdk2410_config的_config替换为空，所以不存在_ 16 --) shift ; break ;; @所以这个循环不动作 17 -a) shift ; APPEND=yes ;; 18 -n) shift ; BOARD_NAME="${1%%_config}" ; shift ;; 19 *) break ;; 20 esac 21 done 22 23 [ "${BOARD_NAME}" ] || BOARD_NAME="$1" @BOARD_NAME=smdk2410 24 25 [ $# -lt 4 ] && exit 1 26 [ $# -gt 6 ] && exit 1 27 28 echo "Configuring for ${BOARD_NAME} board..." 29 30 # 31 # Create link to architecture specific headers 32 # 33 if [ "$SRCTREE" != "$OBJTREE" ] ; then 34 mkdir -p ${OBJTREE}/include 35 mkdir -p ${OBJTREE}/include2 36 cd ${OBJTREE}/include2 37 rm -f asm 38 ln -s ${SRCTREE}/include/asm-$2 asm 39 LNPREFIX="../../include2/asm/" 40 cd ../include 41 rm -rf asm-$2 42 rm -f asm 43 mkdir asm-$2 44 ln -s asm-$2 asm 45 else 46 cd ./include 47 rm -f asm 48 ln -s asm-$2 asm 49 fi @@上面是建立或者删除一些目录 50 51 rm -f asm-$2/arch @rm -f asm-arm/arch 52 53 if [ -z "$6" -o "$6" = "NULL" ] ; then @$6=s3c24x0 不为空 所以执行else 54 ln -s ${LNPREFIX}arch-$3 asm-$2/arch 55 else 56 ln -s ${LNPREFIX}arch-$6 asm-$2/arch @LNPREFIX为空 所以相当于ln -s arch-s3c24x0 asm-arm/arch 57 fi 58 59 if [ "$2" = "arm" ] ; then 60 rm -f asm-$2/proc 61 ln -s ${LNPREFIX}proc-armv asm-$2/proc 62 fi 63 64 # 65 # Create include file for Make 66 # 67 echo "ARCH = $2" > config.mk 68 echo "CPU = $3" >> config.mk 69 echo "BOARD = $4" >> config.mk 70 71 [ "$5" ] && [ "$5" != "NULL" ] && echo "VENDOR = $5" >> config.mk 72 73 [ "$6" ] && [ "$6" != "NULL" ] && echo "SOC = $6" >> config.mk 74 75 # 76 # Create board specific header file 77 # 78 if [ "$APPEND" = "yes" ] # Append to existing config file 79 then @APPEND维持原值，所以config.h被重建 80 echo >> config.h 81 else 82 > config.h # Create new config file 83 fi 84 echo "/* Automatically generated - do not edit */" >>config.h 85 echo "#include <configs/$1.h>" >>config.h 86 87 exit 0
这样在执行make smdk2410_config后，在include下面主要添改了四个文件（夹）分别是config.h, config.mk, asm-arm/ , asm/
其中config.h全部内容如下：
#include<configs/smdk2410.h>
其中config.mk文件内容如下四行
ARCH =arm
CPU =arm920t
BOARD =smdk2410
SOC =s3c24x0
由此总结执行make smdk2410_config配置的结果：
1》开发板名称BOARD_NAME=$1
2》建立asm-arm/ , asm/和指向到链接
3》创建config.h,定向到开发板smdk2410.h
4》创建config.mk
注意config/下的头文件（包含smdk2410.h）等有两种
1》选项 前缀是CONFIG_
2》参数 前缀是CFG_