假设现在我们在u-1.1.6-mini2440下执行make mini2440_config
进入Makefile文件后可以看到：
MKCONFIG := $(SRCTREE)/mkconfig
export MKCONFIG
mini2440_config :unconfig
@$(MKCONFIG) $(@:_config=) arm arm920t mini2440 NULL s3c24x0
则上述命令为：./mkconfig mini2440 arm arm920t mini2440 NULL s3c24x0
$1 $2 S3 S4 $5 $6
进入mkconfig
#!/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]>
#
APPEND=no # Default: Create new config file
BOARD_NAME="" # Name to print in make output
#命令中没有"--、-a、-n"信息，跳过此段
while [ $# -gt 0 ] ; do
case "$1" in
--) shift ; break ;;
-a) shift ; APPEND=yes ;;
-n) shift ; BOARD_NAME="${1%%_config}" ; shift ;;
*) break ;;
done
#在前面(BOARD_NAME="" )，所以在这里BOARD_NAME=mini2440
[ "${BOARD_NAME}" ] || BOARD_NAME="$1"
[ $# -lt 4 ] && exit 1
[ $# -gt 6 ] && exit 1
echo "Configuring for ${BOARD_NAME} board..."
#
# Create link to architecture specific headers
#在Makefile中有，所以执行else部分
#OBJTREE:= $(if $(BUILD_DIR),$(BUILD_DIR),$(CURDIR))
#SRCTREE:= $(CURDIR)
if [ "$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 #在include下asm连接asm-arm
fi
rm -f asm-$2/arch
#$6 = s3c24x0
if [ -z "$6" -o "$6" = "NULL" ] ; then
ln -s ${LNPREFIX}arch-$3 asm-$2/arch
else
ln -s ${LNPREFIX}arch-$6 asm-$2/arch #在asm-arm/下 arch连接向arch-s3c24x0
fi
if [ "$2" = "arm" ] ; then
rm -f asm-$2/proc
ln -s ${LNPREFIX}proc-armv asm-$2/proc
fi
#
# Create include file for Make
#
# > 创建 >> 追加
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
echo "#include <configs/$1.h>" >>config.h
exit 0
