嵌入式LINUX2.6.32移植-yaffs2文件系统

嵌入式LINUX2.6.32移植-yaffs2文件系统

主机：RHEL6.0(2.6.32-220.2.1.el6.i686)

开发板：FL2440

编译器:arm-unknown-linux-gnueabi-gcc-4.4.6

1.修改Makefile

ARCH ?= arm

CROSS_COMPILE ?= arm-unknown-linux-gnueabi-

2.修改晶振频率

@163@ arch/arm/mach-s3c2440/mach-smdk2440.c

--        s3c24xx_init_clocks(16934400);
++        s3c24xx_init_clocks(12000000);

3.修改MTD分区( mtd_partition smdk_default_nand_part)

@@ arch/arm/plat-s3c24xx/common-smdk.c

static struct mtd_partition smdk_default_nand_part[] = {

[0] = {
                .name   = "Boot",
                .size   = 0x00100000,
                .offset = 0
        },

        [1] = {
                .name   = "MyApp",
                .size   = 0x003c0000,
                .offset = 0x00140000,
        },

        [2] = {
                .name   = "Kernel",
                .size   = 0x00300000,
                .offset = 0x00500000,
        },

        [3] = {
                .name   = "fs_yaffs",
                .size   = 0x03c00000,    //30M
                .offset = 0x00800000,
        },

        [4] = {
                .name   = "WINCE",
                .size   = 0x03c00000,
                .offset = 0x04400000,
        }

};

##修改NAND_ECC方式

@@822@@drivers/mtd/nand/s3c2410.c

chip->ecc.mode = NAND_ECC_NONE;//NAND_ECC_SOFT;

##支持yaffs2文件系统

git clone git://

cd yaffs2

./patch-ker.sh c m /work/rhel/linux-2.6.32.59/

make s3c2410_defconfig

make menuconfig进行内核裁剪

##编译mkyaffsimage和mkyaffs2image

cd yaffs3/utils

make

##yaffs_guts.h编译出错

yaffs_guts.h:136: error: expected specifier-qualifier-list before ‘u8’

yaffs_guts.h:155: error: expected specifier-qualifier-list before ‘u8’

yaffs_guts.h:211: error: expected specifier-qualifier-list before ‘u8’

yaffs_guts.h:293: error: expected specifier-qualifier-list before ‘u32’

yaffs_guts.h:315: error: expected specifier-qualifier-list before ‘u16’

yaffs_guts.h:388: error: expected specifier-qualifier-list before ‘u32’

yaffs_guts.h:399: error: expected specifier-qualifier-list before ‘u8’

yaffs_guts.h:488: error: expected specifier-qualifier-list before ‘u32’

yaffs_guts.h:509: error: expected specifier-qualifier-list before ‘u8’

yaffs_guts.h:525: error: expected specifier-qualifier-list before ‘u32’

yaffs_guts.h:629: error: expected specifier-qualifier-list before ‘u16’

yaffs_guts.h:792: error: expected specifier-qualifier-list before ‘u32’

yaffs_guts.h:807: error: expected specifier-qualifier-list before ‘u32’

##解决办法

vim ../direct/yportenv.h

去掉#ifdef CONFIG_YAFFS_DEFINES_TYPES宏定义

##注：不知道为什么yaffs2源码编译出来的mkyaffs2image打包的文件系统不能识别，只能用飞凌光盘自带的mkyaffs2image