linux -- LTIB添加新平台
2.6.32内核整合到LTIB
在LTIB里添加一个新平台是很容易的事情。
首先打包内核源码，由于是修改过后可以正常使用的内核，所以没有补丁，在SPEC文件里
就不用加上补丁的操作了。
进入LTIB的安装目录下
cd <INSTALL_PATH>/config/platform
cp imx27ads imx21ads -rf
cd imx21ads
vim main.lkc
修改平台名,工具链，内核等,这里给出我的例子，工具链没改（因为这个LTIB里有我能用
的工具链），注意修改内核的地方
config CONFIG_TITLE
string
default "LTIB: Freescale IMX21 ADS reference board"
config CPU
string
default "MX21"
config PLATFORM_COMMENT
string
default "Freescale IMX21 ADS reference board"
config VENDOR
string
default "Freescale"
config PLATFORM
string
default "imx21ads"
config GNUTARCH
string
default arm
config LINTARCH
string
default arm
config CFGHOST
string
default arm-linux
source http://www.cnblogs.com/userspace/endian.lkc
source http://www.cnblogs.com/userspace/libc_type.lkc
comment "Choose your toolchain"
choice
prompt "Toolchain"
default TOOLCHAIN1
help
Choose the cross toolchain for building your packages. If you
choose none, you can enter the path to your toolchain by hand.
config TOOLCHAIN1
bool "ARMv5te gcc-4.1.2,Multi-lib,gnueabi/glibc-2.5-nptl-3" if
GLIBC || LIBC_NONE || LIBC_HACKING
config TOOLCHAIN2
bool "ARM926 gcc-4.1.1/glibc-2.4-nptl-1" if GLIBC || LIBC_NONE ||
LIBC_HACKING
config TOOLCHAIN_CUSTOM
bool "custom"
endchoice
config TOOLCHAIN
string
default tc-fsl-x86lnx-armeabi-nptl-4.1.2-3.i386.rpm if TOOLCHAIN1
default tc-fsl-x86lnx-arm-926ejs-nptl-sf-4.1.1-1.i386.rpm if TOOLCHAIN2
config TOOLCHAIN_PATH
string
default "/opt/freescale/usr/local/gcc-4.1.2-glibc-2.5-nptl-3/arm-none-
linux-gnueabi" if TOOLCHAIN1
default "/opt/freescale/usr/local/gcc-4.1.1-glibc-2.4-nptl-sf-1/arm-
926ejs-linux" if TOOLCHAIN2
string "Supply your toolchain path" if TOOLCHAIN_CUSTOM
config CUSTOM_TOOLCHAIN_PREFIX
depends TOOLCHAIN_CUSTOM
string "Enter your cross tools prefix"
config TOOLCHAIN_PREFIX
string
default "arm-none-linux-gnueabi-" if TOOLCHAIN1
default "arm-926ejs-linux-" if TOOLCHAIN2
default CUSTOM_TOOLCHAIN_PREFIX if TOOLCHAIN_CUSTOM
config TOOLCHAIN_CFLAGS
string
default "-O2 -fsigned-char -msoft-float" if TOOLCHAIN1
default "-O2 -fsigned-char" if TOOLCHAIN2
string "Enter any CFLAGS for gcc/g++"
help
This option lets you set flags that will be passed to gcc/g++
These will be injected by the spoofing mechanism, so they
only work if you reference the compiler as gcc/g++ in your
rpm spec files (you cannot say for instance powerpc-linux-gcc)
comment "Choose your Kernel"
choice
prompt "kernel"
default KERNEL2
help
This menu will let you choose the kernel to use with your board.
If you don't want to build a kernel, unselect this option.
config KERNEL1
bool "Linux 2.6.22-mx"
help
This is the kernel for the imx21ads platform
config KERNEL2
bool "linux 2.6.32"
help
This is the kernel for the imx21ads platform
config KERNEL_DIR_BUILD
bool "Local Linux directory build"
help
Build using a local copy of the kernel sources
config KERNEL_NONE
bool "Do not build the Linux kernel"
help
Select this if you dont want to build the kernel
endchoice
config PKG_KERNEL
string
default "kernel-2.6.22-mx" if KERNEL1
default "kernel-2.6.32" if KERNEL2
default "kernel26-dir-build" if KERNEL_DIR_BUILD
source http://www.cnblogs.com/userspace/kernel_dir_build.lkc
config PKG_KERNEL_PRECONFIG
string "kernel preconfig"
default "linux-2.6.22-mx27ads.config" if KERNEL1
default "linux-2.6.32-mx21ads.config" if KERNEL2 //这个文件是默认配置文
件
config PKG_KERNEL_WANT_HEADERS
depends ! KERNEL_NONE
bool "Include kernel headers"
help
Selecting this will copy kernel headers to
rootfs/usr/src/linux/include
config PKG_KERNEL_WANT_CF
depends ! KERNEL_NONE
bool "Configure the kernel"
default n
config PKG_KERNEL_LEAVESRC
depends ! KERNEL_NONE
bool "Leave the sources after building"
default n
help
This is a one shot option that can be used to build the kernel and
leave the build source tree in rpm/BUILD in place
config DEPLOYMENT_ERASE_BLOCK_SIZE
string
default 128
source http://www.cnblogs.com/userspace/distro.lkc
source http://www.cnblogs.com/userspace/packages.lkc
source http://www.cnblogs.com/userspace/sysconfig.lkc
source http://www.cnblogs.com/userspace/deployment.lkc
source http://www.cnblogs.com/userspace/defaults.lkc
修改完成后，将2.6.32默认配置选项文件拷贝到当前目录（imx21ads）下，名字变成
kernel-2.6.32-imx21ads.config(名字可以随便取，但要保证和main.lkc里的文件名相
同)
cp defconfig kernel-2.6.32-imx21ads.config (defconfig是我原来在2.6.32下编译
内核的默认配置文件，一般是内核目录下的.config文件)
接下来到
cd <INSTALL_PATH>/config
vim main.lkc
这里加上平台的相关信息
第一处为
config PLATFORM_imx21ads
bool "Freescale IMX21 ADS reference board"
config PLATFORM_imx27ads
bool "Freescale IMX27 ADS reference board"
第二处为
config PLATFORM_DIR
string
default "config/platform/imx21ads" if PLATFORM_imx21ads （这里的路径名和
创建的文件夹相同）
default "config/platform/imx32ads" if PLATFORM_imx32ads
接下来到
cd <INSTALL_PATH>/dist/lfs-5.1/kernel
cp <任意一个spec.in文件> kernel-2.6.32.spec.in
vim kernel-2.6.32.spec.in
%define pfx /opt/freescale/rootfs/%{_target_cpu}
%define pversion 2.6.32
%define bld_dir_name kernel (注意这个地方名字要改成内核压缩包解压缩后的文
件夹的名字，如果你的kernel.tar.bz2解压缩后文件名为kernel-2.6.32那么这里也要改
成此名称)
%define kernel arch/arm/boot/zImage
%define pkg_name linux
Summary : Linux kernel (core of the Linux operating system)
Name : kernel
Version : 2.6.32
Release : 1
License : GPL
Vendor : Freescale Semiconductor
Packager : Ross Wille
Group : System Environment/Kernel
Source : linux-2.6.32.tar.bz2
BuildRoot : %{_tmppath}/%{name}
Prefix : %{pfx}
%Description
%{summary}
%Prep
%setup -n %{bld_dir_name}
接下来
cp kernel-2.6.32.tar.bz2(内核压缩包) rpm/SOURCE 或者
cp kernel-2.6.32.tar.bz2 /opt/freescale/pkgs/
然后就./ltib -m config ./ltib了
这里最好先做 ./ltib -m prep -p kernel-2.6.32.spec将内核先预先放置在rpm/BUILD
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http://www.cnblogs.com/zym0805/archive/2012/03/29/2424342.html