【转载】 linux-2.6.38到tiny6410的移植手册（连载2）__网卡&NFS

原文作者：prettybxp 原文链接：http://www.arm9home.net/read.php?tid-14211.html

上次的nand flash移植 linux-2.6.38到tiny6410的移植手册（连载1）见

http://www.arm9home.net/read.php?tid-14196.html

今天做的是dm9000网卡移植，和nfs文件系统的搭建

1、vi include/linux/dm9000.h

28行增加

unsigned char param_addr[6];

2、vi arch/arm/mach-s3c64xx/mach-mini6410.c

为方便起见，将他的网卡结构体注释掉

#if 0

static struct resource mini6410_dm9k_resource[] = {

[0] = {

.start = S3C64XX_PA_XM0CSN1,

.end = S3C64XX_PA_XM0CSN1 + 1,

.flags = IORESOURCE_MEM

},

[1] = {

.start = S3C64XX_PA_XM0CSN1 + 4,

.end = S3C64XX_PA_XM0CSN1 + 5,

.flags = IORESOURCE_MEM

},

[2] = {

.start = S3C_EINT(7),

.end = S3C_EINT(7),

.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL

}

};

static struct dm9000_plat_data mini6410_dm9k_pdata = {

.flags = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),

};

static struct platform_device mini6410_device_eth = {

.name = "dm9000",

.id = -1,

.num_resources = ARRAY_SIZE(mini6410_dm9k_resource),

.resource = mini6410_dm9k_resource,

.dev = {

.platform_data = &mini6410_dm9k_pdata,

},

};

#endif

增加

#define S3C64XX_PA_DM9000 (0x18000000)

#define S3C64XX_SZ_DM9000 SZ_1M

#define S3C64XX_VA_DM9000 S3C_ADDR(0x03b00300)

static struct resource dm9000_resources[] = {

[0] = {

.start = S3C64XX_PA_DM9000,

.end = S3C64XX_PA_DM9000 + 3,

.flags = IORESOURCE_MEM,

},

[1] = {

.start = S3C64XX_PA_DM9000 + 4,

.end = S3C64XX_PA_DM9000 + S3C64XX_SZ_DM9000 - 1,

.flags = IORESOURCE_MEM,

},

[2] = {

.start = IRQ_EINT(7),

.end = IRQ_EINT(7),

.flags = IORESOURCE_IRQ | IRQF_TRIGGER_HIGH,

},

};

static struct dm9000_plat_data dm9000_setup = {

.flags = DM9000_PLATF_16BITONLY,

.dev_addr = { 0x08, 0x90, 0x00, 0xa0, 0x90, 0x90 },

};

static struct platform_device s3c_device_dm9000 = {

.name = "dm9000",

.id = 0,

.num_resources = ARRAY_SIZE(dm9000_resources),

.resource = dm9000_resources,

.dev = {

.platform_data = &dm9000_setup,

}

};

如果不嫌麻烦，也可以直接在原代码上改，S3C64XX_PA_XM0CSN1的值也为0x18000000的。

增加mac地址设置函数

static int __init dm9000_set_mac(char *str) {

unsigned char addr[6];

unsigned int val;

int idx = 0;

char *p = str, *end;

while (*p && idx < 6) {

val = simple_strtoul(p, &end, 16);

if (end <= p) {

/* convert failed */

break;

} else {

addr[idx++] = val;

p = end;

if (*p == ':'|| *p == '-') {

p++;

} else {

break;

}

}

}

if (idx == 6) {

printk("Setup ethernet address to %pM\n", addr);

memcpy(dm9000_setup.param_addr, addr, 6);

}

return 1;

}

__setup("ethmac=", dm9000_set_mac);

增加IO映射

增加映射结构体

static struct map_desc mini6410_iodesc[] = {

#ifdef CONFIG_DM9000

{

.virtual = (u32)S3C64XX_VA_DM9000,

.pfn = __phys_to_pfn(S3C64XX_PA_DM9000),

.length = S3C64XX_SZ_DM9000,

.type = MT_DEVICE,

},

#endif

};

然后在static void __init mini6410_map_io(void)函数中

将s3c64xx_init_io(NULL, 0);改成

s3c64xx_init_io(mini6410_iodesc, ARRAY_SIZE(mini6410_iodesc));

最后在static struct platform_device *mini6410_devices[] __initdata 的初始化设备中

将 &mini6410_device_eth,

改成 &s3c_device_dm9000,

3、vi drivers/net/dm9000.c

大概1586行

将mac_src = "platform data";

memcpy(ndev->dev_addr, pdata->dev_addr, 6);

改成

mac_src = "param data";

memcpy(ndev->dev_addr, pdata->param_addr, 6);

大概1598行

增加

if (!is_valid_ether_addr(ndev->dev_addr) && pdata != NULL) {

mac_src = "platform data";

memcpy(ndev->dev_addr, pdata->dev_addr, 6);

}

4、make menuconfig

[*] Networking support --->

Networking options --->

<*> Packet socket

<*> Unix domain sockets

[*] TCP/IP networking

[*] IP: kernel level autoconfiguration

[*] IP: DHCP support

[*] IP: BOOTP support

[*] IP: RARP support

Device Drivers --->

[*] Network device support --->

[*] Ethernet (10 or 100Mbit) --->

<*> DM9000 support

[ ] Ethernet (1000 Mbit) ---> 去掉

其他的默认

编译出来，在引导信息中就能看到dm9000网卡信息了。



dm9000 Ethernet Driver, V1.31

eth0: dm9000a at d0930000,d0e00004 IRQ 108 MAC: 08:90:90:90:。。。。

5、增加NFS挂载功能

make menuconfig

File systems --->

Network File Systems --->

<*> NFS client support

[*] Root file system on NFS 这个一点要选

<*> NFS server support

之后编译出来的内核就能挂载nfs文件系统了

我的是setenv bootargs console=ttySAC0 root=/dev/nfs nfsroot=58.154.51.164:/root/my_root ip=58.154.51.199:58.154.51.164:58.154.51.199:255.255.255.0 :kiss:eth0:off

如

mmc1: mmc_rescan_try_freq: trying to init card at 100000 Hz

eth0: link down

eth0: link up, 100Mbps, full-duplex, lpa 0xC1E1

IP-Config: Complete:

device=eth0, addr=58.154.51.199, mask=255.255.255.0, gw=58.154.51.199,

host=58.154.51.199, domain=, nis-domain=(none),

bootserver=58.154.51.164, rootserver=58.154.51.164, rootpath=

VFS: Mounted root (nfs filesystem) on device 0:11.

Freeing init memory: 120K

Please press Enter to activate this console. [root@kissBaofish /]#

[root@kissBaofish /]#

[root@kissBaofish /]#

[root@kissBaofish /]# [*] Touchscreens --->

<*> S3C touchscreen driver for Mini6410

<*> Mini6410 1-Wire host and Touch Screen Driver

lcd好用了，开机出现了那只小企鹅，挂NFS后触摸屏也能用了。