嵌入式Linux2.6.32系统移植–DM9000

嵌入式Linux2.6.32系统移植–DM9000

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

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

##添加头文件

#include

##添加函数

/* DM9000 */
static struct resource s3c_dm9k_resource[] = {
        [0] = {
                .start = S3C2410_CS4, /* ADDR2=0 ，发送地址时使用这个地址 */
                .end = S3C2410_CS4 + 3,
                .flags = IORESOURCE_MEM,
        },

        [1] = {
                .start = S3C2410_CS4 + 4, /* ADDR2=1 ，传输数据时使用这个地址 */
                .end = S3C2410_CS4 + 4 + 3,
                .flags = IORESOURCE_MEM,
        },

        [2] = {
                .start = IRQ_EINT7, /* 中断号 */
                .end = IRQ_EINT7,
                .flags = IORESOURCE_IRQ|IRQF_TRIGGER_RISING,
        }

};


/* for the moment we limit ourselves to 16bit IO until some
 *
 * * better IO routines can be written and tested
 *
 * */

static struct dm9000_plat_data s3c_dm9k_platdata = {
        .flags = DM9000_PLATF_16BITONLY,
};

static struct platform_device s3c_device_dm9k = {
        .name = "dm9000",
        .id = 0,
        .num_resources = ARRAY_SIZE(s3c_dm9k_resource),
        .resource = s3c_dm9k_resource,
        .dev = {
                .platform_data = &s3c_dm9k_platdata,
        }
};

##注册设备

&s3c_device_nand,
+        &s3c_device_dm9k,

修改dm9000.c源码

##添加头文件

#ifdef CONFIG_ARCH_S3C2440
#include <mach/regs-mem.h>
#endif

##添加初始化部分

dm9000_init(void)
{
+#ifdef CONFIG_ARCH_S3C2440
+        unsigned int oldval_bwscon = *(volatile unsigned int *)S3C2410_BWSCON;
+        unsigned int oldval_bankcon4 = *(volatile unsigned int *)S3C2410_BANKCON4;
+        *((volatile unsigned int *)S3C2410_BWSCON) =
+                        (oldval_bwscon & ~(3<<16)) | S3C2410_BWSCON_DW4_16 |
+                        S3C2410_BWSCON_WS4 | S3C2410_BWSCON_ST4;
+        *((volatile unsigned int *)S3C2410_BANKCON4) = 0x1f7c;
+#endif
        printk(KERN_INFO "%s Ethernet Driver, V%s\n", CARDNAME, DRV_VERSION);
        return platform_driver_register(&dm9000_driver);
}

##添加软MAC地址

+        //使用软MAC地址,10:23:45:67:89:ab
+        memcpy(ndev->dev_addr, "\x10\x23\x45\x67\x89\xab", 6);
        if (!is_valid_ether_addr(ndev->dev_addr))
                dev_warn(db->dev, "%s: Invalid ethernet MAC address. Please "
                         "set using ifconfig\n", ndev->name);

##指定中断方式

##不然会出现:dm9000 dm9000.0: WARNING: no IRQ resource flags set.

##在dm9000_open函数中

+#ifdef CONFIG_ARCH_S3C2440
+        if (request_irq(dev->irq, &dm9000_interrupt, IRQF_SHARED|IRQF_TRIGGER_RISING, dev->name, dev))
+#else
        if (request_irq(dev->irq, &dm9000_interrupt, irqflags, dev->name, dev))
+#endif
                return -EAGAIN;

 至此,DM9000的移植完成。

##附RTC的实现

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

在smdk2440_devices[] __initdata添加一行:

&s3c_device_rtc,