UT4418Linux和U-boot编译脚本解析
编译器目录：output/host/usr
#！/bin/bash
#
# Description : Android Build Script.
# Authors :jianjun jiang - jerryjianjun@gmail.com
# Version :2.00
# Notes :None
#
#
# JAVA PATH
#
exportPATH=/usr/lib/jvm/java-7-oracle/bin:$PATH
#
# Some Directories
#
BS_DIR_TOP=$(cd `dirname $0` ; pwd)
BS_DIR_RELEASE=${BS_DIR_TOP}/out/release
BS_DIR_TARGET=${BS_DIR_TOP}/out/target/product/x6818/
BS_DIR_UBOOT=${BS_DIR_TOP}/uboot
BS_DIR_KERNEL=${BS_DIR_TOP}/kernel
BS_DIR_BUILDROOT=${BS_DIR_TOP}/buildroot
#
# Cross Toolchain Path
#
BS_CROSS_TOOLCHAIN_BOOTLOADER=${BS_DIR_TOP}/prebuilts/gcc/linux-x86/arm/arm-eabi-4.8/bin/arm-eabi-
BS_CROSS_TOOLCHAIN_KERNEL=${BS_DIR_TOP}/prebuilts/gcc/linux-x86/arm/arm-eabi-4.8/bin/arm-eabi-
#
# Target Config
#
BS_CONFIG_BOOTLOADER_UBOOT=x6818_config
BS_CONFIG_KERNEL=x6818_defconfig
BS_CONFIG_FILESYSTEM=PRODUCT-x6818-userdebug
BS_CONFIT_BUILDROOT=x6818_defconfig
setup_environment()
{
LANG=C
cd${BS_DIR_TOP};
mkdir-p out/host/linux-x86/bin || return 1;
mkdir-p ${BS_DIR_TARGET}/boot;
[-f "${BS_DIR_TOP}/out/host/linux-x86/bin/mkuserimg.sh" ] ||{ echo"tar generate boot.img tools"; tar xvf tools/generate_boot.tar.gz -C${BS_DIR_TOP}/out/host/linux-x86/bin;}
[-f "${BS_DIR_TARGET}/boot/root.img.gz" ] ||{ echo "tarboot.tar.gz"; tar xvf tools/boot.tar.gz -C ${BS_DIR_TARGET};}
PATH=${BS_DIR_TOP}/out/host/linux-x86/bin:$PATH;
mkdir-p ${BS_DIR_RELEASE} || return 1
}
build_bootloader_uboot()
{
#Compiler uboot
cd${BS_DIR_UBOOT} || return 1
makedistclean CROSS_COMPILE=${BS_CROSS_TOOLCHAIN_BOOTLOADER} || return 1
cp${BS_DIR_UBOOT}/board/s5p6818/x6818/x6818_lcd.mk${BS_DIR_UBOOT}/board/s5p6818/x6818/fastboot_lcd.o
cp${BS_DIR_UBOOT}/arch/arm/cpu/slsiap/devices/x6818_pmic.mk${BS_DIR_UBOOT}/arch/arm/cpu/slsiap/devices/axp228_mfd.o
make${BS_CONFIG_BOOTLOADER_UBOOT} CROSS_COMPILE=${BS_CROSS_TOOLCHAIN_BOOTLOADER} ||return 1
make-j${threads} CROSS_COMPILE=${BS_CROSS_TOOLCHAIN_BOOTLOADER} || return 1
#Copy bootloader to release directory
cp-v ${BS_DIR_UBOOT}/ubootpak.bin ${BS_DIR_RELEASE}
cp-v ${BS_DIR_UBOOT}/readme.txt ${BS_DIR_RELEASE}
cp-v ${BS_DIR_UBOOT}/env.txt ${BS_DIR_RELEASE}
cp-v ${BS_DIR_UBOOT}/x6818-sdmmc.sh ${BS_DIR_RELEASE}
echo"^_^ uboot path: ${BS_DIR_RELEASE}/ubootpak.bin"
return0
}
build_kernel()
{
exportPATH=${BS_DIR_UBOOT}/tools:$PATH
#Compiler kernel
cd${BS_DIR_KERNEL} || return 1
make${BS_CONFIG_KERNEL} ARCH=arm CROSS_COMPILE=${BS_CROSS_TOOLCHAIN_KERNEL} ||return 1
make-j${threads} ARCH=arm CROSS_COMPILE=${BS_CROSS_TOOLCHAIN_KERNEL} || return 1
make-j${threads} ARCH=arm CROSS_COMPILE=${BS_CROSS_TOOLCHAIN_KERNEL} uImage ||return 1
#Copy uImage to release directory
cp-v ${BS_DIR_KERNEL}/arch/arm/boot/uImage ${BS_DIR_RELEASE}
echo"^_^ kernel path: ${BS_DIR_RELEASE}/uImage"
#generate boot.img
cd${BS_DIR_TOP} || return 1
echo'boot.img ->' ${BS_DIR_RELEASE}
#Make boot.img with ext4 format, 64MB
cp-v ${BS_DIR_RELEASE}/uImage ${BS_DIR_TARGET}/boot
mkuserimg.sh-s ${BS_DIR_TARGET}/boot ${BS_DIR_TARGET}/boot.img ext4 boot 67108864
cp-av ${BS_DIR_TARGET}/boot.img ${BS_DIR_RELEASE} || return 1;
return0
}
build_system()
{
cd${BS_DIR_TOP} || return 1
sourcebuild/envsetup.sh || return 1
make-j${threads} ${BS_CONFIG_FILESYSTEM} || return 1
#Make boot.img
#Create boot directory
mkdir-p ${BS_DIR_TARGET}/boot || return 1
#Copy some images to boot directory
if[ -f ${BS_DIR_RELEASE}/uImage ]; then
cp-v ${BS_DIR_RELEASE}/uImage ${BS_DIR_TARGET}/boot
fi
if[ -f ${BS_DIR_TARGET}/ramdisk.img ]; then
cp-v ${BS_DIR_TARGET}/ramdisk.img ${BS_DIR_TARGET}/boot/root.img.gz
fi
if[ -f ${BS_DIR_TARGET}/ramdisk-recovery.img ]; then
cp-v ${BS_DIR_TARGET}/ramdisk-recovery.img ${BS_DIR_TARGET}/boot
fi
#Make boot.img with ext4 format, 64MB
mkuserimg.sh-s ${BS_DIR_TARGET}/boot ${BS_DIR_TARGET}/boot.img ext4 boot 67108864
#Copy to release directory
cp-av ${BS_DIR_TARGET}/boot.img ${BS_DIR_RELEASE} || return 1;
cp-av ${BS_DIR_TARGET}/system.img ${BS_DIR_RELEASE} || return 1;
cp-av ${BS_DIR_TARGET}/cache.img ${BS_DIR_RELEASE} || return 1;
cp-av ${BS_DIR_TARGET}/recovery.img ${BS_DIR_RELEASE} || return 1;
cp-av ${BS_DIR_TARGET}/userdata.img ${BS_DIR_RELEASE} || return 1;
return0
}
build_buildroot()
{
#Compiler buildroot
cd${BS_DIR_BUILDROOT} || return 1
make${BS_CONFIT_BUILDROOT} || return 1
make|| return 1
#Copy image to release directory
cp-v ${BS_DIR_BUILDROOT}/output/images/rootfs.ext4 ${BS_DIR_RELEASE}/qt-rootfs.img
cp-v ${BS_DIR_BUILDROOT}/qt-documents.txt ${BS_DIR_RELEASE}
}
threads=1
uboot=no
kernel=no
system=no
buildroot=no
if [ -z $1 ]; then
uboot=yes
kernel=yes
system=yes
buildroot=yes
fi
while [ "$1" ]; do
case "$1" in
-j=*)
x=$1
threads=${x#-j=}
;;
-u|--uboot)
uboot=yes
;;
-k|--kernel)
kernel=yes
;;
-s|--system)
system=yes
;;
-b|--buildroot)
buildroot=yes
;;
-a|--all)
uboot=yes
kernel=yes
system=yes
buildroot=yes
;;
-h|--help)
cat >&2 <<EOF
Usage: build.sh [OPTION]
Build script for compile the source oftelechips project.
-j=n using nthreads when building source project (example: -j=16)
-u,--uboot build bootloader ubootfrom source
-k,--kernel build kernel from source
-s,--system build android filesystem from source
-b,--buildroot build buildroot filesystem for QT platform
-a,--all build all, includeanything
-h,--help display this help andexit
EOF
exit 0
;;
*)
echo "build.sh: Unrecognised option$1" >&2
exit 1
;;
esac
shift
done
setup_environment || exit 1
if [ "${uboot}" = yes ]; then
build_bootloader_uboot|| exit 1
fi
if [ "${kernel}" = yes ]; then
build_kernel|| exit 1
fi
if [ "${system}" = yes ]; then
build_system|| exit 1
fi
if [ "${buildroot}" = yes ]; then
build_buildroot|| exit 1
fi
exit 0
总结出单独的编译步骤
cp arch/arm/configs/x6818_defconfig .config
make menuconfig ARCH=armCROSS_COMPILE=arm-none-linux-gnueabi-
make ARCH=armCROSS_COMPILE=arm-none-linux-gnueabi- uImage –j4
只看到脚本，没看到分析啊！