内核linux-3.4.2支持dm9000

当前烧写：
   fs：
   nfs 30000000 192.168.1.17:/work/nfs_root/first_fs_mdev.yaffs2    //这里不能使用nfs挂载，只能直接烧写
   nand erase.part root                         //原因是：内核还不支持dm9000c
   nand write.yaffs 30000000 260000 $filesize

    kernel:
   nfs 30000000 192.168.1.17:/work/nfs_root/uImage_new     //使用uboot对dm9000的支持，这里可以使用uboot的nfs斧王
   bootm 30000000


移植内核linux-3.4.2对dm9000c的支持，目的是用nfs挂载根文件系统

1. 编译
2. 解决错误
2.1 头文件不对：去掉或者改名
2.2 宏不对：改名或者使用新宏
2.3 有些函数不用了：改名或者使用新函数

当前内核里面有dm9000，启动内核和根文件系统后

1、设置ip
#ifconfig eth0 192.168.1.3
#ping 192.168.1.17

ping通服务器后，挂机文件系统的方法是：
mount -t nfs -o nolock,vers=2 192.168.1.17:/work/nfs_root/fs_mini_mdev_new /mnt

mini2440已经支持了自带的dm9000

其入口函数是：
platform_driver_register(&dm9000_driver);
   platform_driver dm9000_driver = {
       dm9000_probe
           platform_device mini2440_device_eth
                   platform_device *mini2440_devices[]
                       platform_add_devices(mini2440_devices, ARRAY_SIZE(mini2440_devices));
                       数组mini2440_devices[]被注册到内核里面了

我们使用的mach-smdk2440里面没有


   /* DM9000AEP 10/100 ethernet controller */

   static struct resource mini2440_dm9k_resource[] = {
       [0] = {
           .start = MACH_MINI2440_DM9K_BASE,
           .end   = MACH_MINI2440_DM9K_BASE + 3,
           .flags = IORESOURCE_MEM
       },
       [1] = {
           .start = MACH_MINI2440_DM9K_BASE + 4,
           .end   = MACH_MINI2440_DM9K_BASE + 7,
           .flags = IORESOURCE_MEM
       },
       [2] = {
           .start = IRQ_EINT7,
           .end   = IRQ_EINT7,
           .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
       }
   };

   /*
   * The DM9000 has no eeprom, and it's MAC address is set by
   * the bootloader before starting the kernel.
   */
   static struct dm9000_plat_data mini2440_dm9k_pdata = {
       .flags       = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
   };

   static struct platform_device mini2440_device_eth = {
       .name       = "dm9000",
       .id       = -1,
       .num_resources   = ARRAY_SIZE(mini2440_dm9k_resource),
       .resource   = mini2440_dm9k_resource,
       .dev       = {
           .platform_data   = &mini2440_dm9k_pdata,
       },
   };

所以在mach-smdk2440.c里面添加：

//add by Flinn for dm9000

#define MACH_smdk2440_DM9K_BASE (S3C2410_CS4 + 0x300)

/* DM9000AEP 10/100 ethernet controller */

static struct resource smdk2440_dm9k_resource[] = {
   [0] = {
       .start = MACH_smdk2440_DM9K_BASE,
       .end   = MACH_smdk2440_DM9K_BASE + 3,
       .flags = IORESOURCE_MEM
   },
   [1] = {
       .start = MACH_smdk2440_DM9K_BASE + 4,
       .end   = MACH_smdk2440_DM9K_BASE + 7,
       .flags = IORESOURCE_MEM
   },
   [2] = {
       .start = IRQ_EINT7,
       .end   = IRQ_EINT7,
       .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
   }
};

/*
* The DM9000 has no eeprom, and it's MAC address is set by
* the bootloader before starting the kernel.
*/
static struct dm9000_plat_data smdk2440_dm9k_pdata = {
.flags = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
};

static struct platform_device smdk2440_device_eth = {
   .name       = "dm9000",
   .id       = -1,
   .num_resources   = ARRAY_SIZE(smdk2440_dm9k_resource),
   .resource   = smdk2440_dm9k_resource,
   .dev       = {
       .platform_data   = &smdk2440_dm9k_pdata,
   },
};

编译出错：
arch/arm/mach-s3c24xx/mach-smdk2440.c:186: error: variable 'smdk2440_dm9k_pdata' has initializer but incomplete type

因为缺少头文件
#include <linux/dm9000.h>

巴特西

内核linux-3.4.2支持dm9000

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