重编译Linux内核的步骤

资源说明：
         宿主机操作系统：Ubuntu10.04 , 虚拟机为VMware10.0
         交叉编译器版本：arm-arago-linux-gnueabi-gcc，gcc version 4.3.3
                         (源于TI：dvsdk_omapl138- evm_04_03_00_06_setuplinux.bin)
         开发板     平台：Omap-L138EVM （LOGIC PD）
         Linux内核  版本：Linux-2.6.37
         Linux内核源码包：linux-2.6.37-psp03.21.00.04.sdk（源于TI：dvsdk_omapl138-evm_04_03_00_06_setuplinux.bin）
        
1. 首先进入linux-2.6.37-psp03.21.00.04.sdk目录，执行如下命令清楚上次编译生成文件。
axz@ubuntu:~/ti-dvsdk_omapl138-evm_04_03_00_06/psp/linux-2.6.37-psp03.21.00.04.sdk$ make distclean CROSS_COMPILE=/home/axz/ti-dvsdk_omapl138-evm_04_03_00_06/linux-devkit/bin/arm-arago-linux-gnueabi-

2. 针对Omap-L138EVM开发板使用arch/arm/config/da850_omapl138_defconfig配置文件来配置内核，执行如下命令：
axz@ubuntu:~/ti-dvsdk_omapl138-evm_04_03_00_06/psp/linux-2.6.37-psp03.21.00.04.sdk$ make da850_omapl138_defconfig ARCH=arm CROSS_COMPILE=/home/axz/ti-dvsdk_omapl138-evm_04_03_00_06/linux-devkit/bin/arm-arago-linux-gnueabi-
#
# configuration written to .config
#

3. 编译内核，编译成功后在arch/arm/boot/目录下生成uImage文件。
axz@ubuntu:~/ti-dvsdk_omapl138-evm_04_03_00_06/psp/linux-2.6.37-psp03.21.00.04.sdk$ make uImage ARCH=arm CROSS_COMPILE=/home/axz/ti-dvsdk_omapl138-evm_04_03_00_06/linux-devkit/bin/arm-arago-linux-gnueabi-
.......................................................................................此处省略许多编译输出信息...............................................................................................
  SYSMAP  System.map
  SYSMAP  .tmp_System.map
  OBJCOPY arch/arm/boot/Image
  Kernel: arch/arm/boot/Image is ready
  AS      arch/arm/boot/compressed/head.o
  GZIP    arch/arm/boot/compressed/piggy.gzip
  AS      arch/arm/boot/compressed/piggy.gzip.o
  CC      arch/arm/boot/compressed/misc.o
  CC      arch/arm/boot/compressed/decompress.o
  SHIPPED arch/arm/boot/compressed/lib1funcs.S
  AS      arch/arm/boot/compressed/lib1funcs.o
  LD      arch/arm/boot/compressed/vmlinux
  OBJCOPY arch/arm/boot/zImage
  Kernel: arch/arm/boot/zImage is ready
  UIMAGE  arch/arm/boot/uImage
Image Name:   Linux-2.6.37
Created:      Mon Oct  6 02:48:45 2014
Image Type:   ARM Linux Kernel Image (uncompressed)
Data Size:    2314860 Bytes = 2260.61 kB = 2.21 MB
Load Address: 0xC0008000
Entry Point:  0xC0008000
  Image arch/arm/boot/uImage is ready
axz@ubuntu:~/ti-dvsdk_omapl138-evm_04_03_00_06/psp/linux-2.6.37-psp03.21.00.04.sdk$


注意：如果出现如下类似信息，导致编译失败，请将mkimage拷贝到/usr/bin目录下。mkimage在u-boot-2010.12-psp03.21.00.04.sdk/tools目录下，成功编译u-boot后生成。
"mkimage" command not found - U-Boot images will not be built