按照官方手册进行mini2440 linux移植及遇到的问题

一.按部就班

1.安装arm-linux-gcc 4.3.2

2.修改顶层makefile指定交叉编译变量:

原

export KBUILD_BUILDHOST := $(SUBARCH)

ARCH    ?= $(SUBARCH)

CROSS_COMPILE ?= 

改为

export KBUILD_BUILDHOST := $(SUBARCH)

ARCH    ?= arm

CROSS_COMPILE ?= arm-linux-

3.将 linux-2.6.32.2/arch/arm/mach-s3c2440/目录下的 mach-smdk2440.c 复制一份。命名为

mach-mini2440.c ，找到 MACHINE_START(S3C2440, 'SMDK2440') ，修改为

MACHINE_START(MINI2440, 'Cody’s mini2440 DevBoard')。

4. 修改时钟源频率为12MHz(12000000)

5. 替换所有mach-mini2440.c中的smdk2440为mini2440,在 mini2440_machine_init(void)函数中，把

smdk_machine_init()函数调用注释掉.

6. make mini2440_defconfig然后make zImage,成功!

7. 把生成的zImage文件烧到板上运行,出现如下错误:

Copy linux kernel from 0x00060000 to 0x30008000, size = 0x00200000 ... done

zImage magic = 0x016f2818

Setup linux parameters at 0x30000100

linux command line is: 'noinitrd root=/dev/mtdblock3 init=/linuxrc console=ttySA

C0'

MACH_TYPE = 1999

NOW, Booting Linux......

Uncompressing Linux.............................................................

.................................................................... done, booti

ng the kernel.

到这里就不动了,把开关拨到从Nand启动,还是出现上面几行字就不动了.

二.先不管它,按照实战手册后面的说明继续做下去.在mach-mini2440.c中加入如下代码:

/* add flash partion BY Cody */

static struct mtd_partition mini2440_default_nand_part[] = { 

        [0] = { 

                .name   = 'supervivi', /*这里是 bootloader 所在的分区，可以放置 u-boot, supervivi 等内容，对应/dev/mtdblock0*/

                .size   = 0x00040000, 

                .offset = 0, 

        },

        [1] = { 

                .name   = 'param', /*这里是supervivi的参数区，其实也属于bootloader的一部分，如果u-boot 比较大，可以把此区域覆盖掉，不会影响系统启动，对应/dev/mtdblock1 */

                .offset = 0x00040000, 

                .size   = 0x00020000, 

        }, 

        [2] = { 

                .name   = 'Kernel',// ;内核所在的分区，大小为 5M，足够放下大部分自己定制的巨型内核了，比如内核使用了更大的Linux Logo图片等，对应/dev/mtdblock2 

                .offset = 0x00060000, 

                .size   = 0x00500000, 

        }, 

        [3] = { 

                .name   = 'root', //;文件系统分区，友善之臂主要用来存放yaffs2 文件系统内容，对应/dev/mtdblock3

                .offset = 0x00560000, 

                .size   = 1024 * 1024 * 1024, // 

        }, 

        [4] = { 

                .name   = 'nand', //;此区域代表了整片的nand flash，主要是预留使用，比如以后可以通过应用程序访问读取/dev/mtdblock4就能实现备份整片nand flash了。 

                .offset = 0x00000000, 

                .size   = 1024 * 1024 * 1024, // 

        } 

};

//;这里是开发板的nand flash 设置表，因为板子上只有一片，因此也就只有一个表 

static struct s3c2410_nand_set mini2440_nand_sets[] = { 

        [0] = { 

                .name           = 'NAND', 

                .nr_chips       = 1, 

                .nr_partitions  = ARRAY_SIZE(mini2440_default_nand_part), 

                .partitions     = mini2440_default_nand_part, 

        }, 

}; 

//;这里是nand flash本身的一些特性，一般需要对照datasheet填写，大部分情况下按照以下参数填写即可 

static struct s3c2410_platform_nand mini2440_nand_info = { 

        .tacls          = 20, 

        .twrph0         = 60, 

        .twrph1         = 20, 

        .nr_sets        = ARRAY_SIZE(mini2440_nand_sets), 

        .sets           = mini2440_nand_sets, 

        .ignore_unset_ecc = 1, 

}; 

/* End flash Partion*/

再修改如下信息,加入红色那一行

static struct platform_device *mini2440_devices[] __initdata = {

    &s3c_device_usb,

    &s3c_device_lcd,

    &s3c_device_wdt,

    &s3c_device_i2c0,

    &s3c_device_iis,

   &s3c_device_nand, //;把nand flash设备添加到开发板的设备列表结构

};

重新make zImage,这次出现很多错误,看不懂

arch/arm/mach-s3c2440/mach-mini2440.c:178: error: array type has incomplete element type

arch/arm/mach-s3c2440/mach-mini2440.c:179: error: array index in non-array initializer

arch/arm/mach-s3c2440/mach-mini2440.c:179: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:180: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:180: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:181: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:181: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:182: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:182: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:184: error: array index in non-array initializer

arch/arm/mach-s3c2440/mach-mini2440.c:184: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:185: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:185: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:186: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:186: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:187: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:187: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:189: error: array index in non-array initializer

arch/arm/mach-s3c2440/mach-mini2440.c:189: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:190: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:190: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:191: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:191: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:192: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:192: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:194: error: array index in non-array initializer

arch/arm/mach-s3c2440/mach-mini2440.c:194: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:195: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:195: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:196: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:196: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:197: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:197: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:199: error: array index in non-array initializer

arch/arm/mach-s3c2440/mach-mini2440.c:199: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:200: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:200: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:201: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:201: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:202: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:202: error: (near initialization for 'mini2440_default_nand_part')

arch/arm/mach-s3c2440/mach-mini2440.c:206: error: array type has incomplete element type

arch/arm/mach-s3c2440/mach-mini2440.c:207: error: array index in non-array initializer

arch/arm/mach-s3c2440/mach-mini2440.c:207: error: (near initialization for 'mini2440_nand_sets')

arch/arm/mach-s3c2440/mach-mini2440.c:208: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:208: error: (near initialization for 'mini2440_nand_sets')

arch/arm/mach-s3c2440/mach-mini2440.c:209: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:209: error: (near initialization for 'mini2440_nand_sets')

arch/arm/mach-s3c2440/mach-mini2440.c:210: error: field name not in record or union initializer

arch/arm/mach-s3c2440/mach-mini2440.c:210: error: (near initialization for 'mini2440_nand_sets')