Install Linux Kernel - AT91SAM9260EK
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二、AT91SAM9260EK
2.1 下载
介绍页:
http://www.at91.com/linux4sam/bin/view/Linux4SAM/LegacyLinuxKernel
下载页:
a)ftp://www.at91.com/pub/linux/2.6.30-at91/
b)http://maxim.org.za/at91_26.html
(1)Kernel
V2.6.30
(2) maintainer – patch
V2.6.30(23/06/2009)
(3) experimental -- patch
V2.6.30
(4) board – cfg
At91sam9260ek_defconfig(V2.6.30)
2.2 部署
解压缩并打补丁
拷贝所有补丁到linux-2.6.30(执行完kernel步,后有此文件夹)目录下。
(1) kernel
$tarjxvf linux-2.6.30.tar.bz2
(2) SoC - patch
$zcat 2.6.30-at91.patch.gz | patch -p1
(3) board - patch
$tar zxvf 2.6.30-at91-exp.5.tar.gz
$for p in 2.6.30-at91-exp.5/*; do patch -p1 < $p ; done
(4) board - cfg
$cp ../at91sam9260ek_defconfig .config
2.3 修改file
2.3.1 Makefile
请参照《1.1 – 修改Makefile》
2.3.2 NAND分区
NAND分1个区,
修改board-sam9260ek.c中“NAND flash”部分,详见附录“nandpartition”
2.4 配置驱动
$make oldconfig
$make menuconfig
关于make oldconfig 1、如果.config不存在,运行make config/menuconfig时的缺省设置由固化在各个Kconfig文件中各项目的缺省值决定。2. 如果.config存在,运行make config/menuconfig时的缺省设置即是当前.config的设置,若对设置进行了修改,.config将被更新。3. arch/arm/defconfig是一个缺省的配置文件,make defconfig时会根据这个文件生成当前的.config。4. arch/arm/configs文件夹中有许多命名为xxx_defconfig的配置文件,如果运行make xxx_defconfig,当前.config文件会由xxx_defconfig文件生成。5. make oldconfig的作用是备份当前.config文件为.config.old,如若make config/menuconfig设置不当可用于恢复先前的.config
2.5. 生成uImage
$make uImage
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参考文章《4-Install Linux Kernel》
nand partition
(linux-2.6.30/arch/arm/mach-at91/board-sam9260ek.c)由
/* * NAND flash */static struct mtd_partition __initdata ek_nand_partition[] = {{.name= "Partition 1",.offset= 0,.size= SZ_256K,},{.name= "Partition 2",.offset= MTDPART_OFS_NXTBLK,.size= MTDPART_SIZ_FULL,},};
修改为:
/* * NAND flash */static struct mtd_partition __initdata ek_nand_partition[] = {/*{.name= "Partition 1",.offset= 0,.size= SZ_256K,},{.name= "Partition 2",.offset= MTDPART_OFS_NXTBLK,.size= MTDPART_SIZ_FULL,},*/{.name = "AT91 NAND my_P1",.offset = 0,.size = MTDPART_SIZ_FULL,//2*SZ_1M,}};
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