硬件设备:
网卡芯片: dm9000
NandFlash: K9F1208U0C 64M
1,
下载并解压缩内核,修改顶层Makefile的编译器选项:
ARCH
?= arm
CROSS_COMPILE
?= arm-softfloat-linux-gnu-
2,
修改arch/arm/plat-s3c24xx/devs.c, 使其支持DM9000网卡:
添加头文件:
#include
添加dm9000网卡设备的支持
EXPORT_SYMBOL(s3c_device_usb);
-
-/* add by guowenxue 2009.05.15 My board use nETH_CS->NGCS3, IRQ_LAN->IRQ_LAN, CMD->A2
*/
-
-static struct resource s3c_dm9000_resource[] =
-{
-
[0] = {
-
.start = S3C2410_CS3 + 0x300,
-
.end
= S3C2410_CS3 + 0x300 + 0x03,
-
.flags = IORESOURCE_MEM
-
},
-
-
[1] = {
-
.start = S3C2410_CS3 + 0x300 + 0x04,
-
.end
= S3C2410_CS3 + 0x300 + 0x04 + 0x3f,
//
It's 0x3f, not 0x3
-
.flags = IORESOURCE_MEM
-
},
-
-
[2] = {
-
.start = IRQ_EINT9,
// My board use EINT9
-
.end
= IRQ_EINT9,
-
.flags = IORESOURCE_IRQ
-
}
-};
-
-static struct dm9000_plat_data s3c_device_dm9000_platdata =
-{
-
.flags= DM9000_PLATF_16BITONLY
-};
-
-struct platform_device s3c_device_dm9000 = {
-
.name= "dm9000",
-
.id= -1,
-
.num_resources= ARRAY_SIZE(s3c_dm9000_resource),
-
.resource= s3c_dm9000_resource,
-
.dev= {
-
.platform_data = &s3c_device_dm9000_platdata,
-
}
-
-};
-
-
-EXPORT_SYMBOL(s3c_device_dm9000);
-// add end
-
3, 修改文件arch/arm/plat-s3c24xx/include/plat/devs.h,导出dm9000设备:
extern struct platform_device s3c_device_sdi;
extern struct platform_device s3c_device_dm9000;
//add by guowenxue,2009.05.15
4, 修改文件arch/arm/mach-s3c2410/mach-smdk2410.c, 添加dm9000
添加头文件：
#include
// add by guowenxue, 2009.05.15
………
static struct platform_device *smdk2410_devices[] __initdata = {
&s3c_device_usb,
&s3c_device_lcd,
&s3c_device_wdt,
&s3c_device_i2c,
&s3c_device_iis,
&s3c_device_dm9000,
// this member add by guowenxue 2009.05.15
};
5，修改文件linux-2.6.28/arch/arm/plat-s3c24xx/common-smdk.c，设置NandFlash的分区情况：
/* NAND parititon from 2.4.18-swl5 */
// modify by guowenxue 2009.05.15
static struct mtd_partition smdk_default_nand_part[] = {
[0] = {
.name
= "mtdblock0 uboot 1M",
.size
= SZ_1M,
.offset = 0,
},
[1] = {
.name
= "mtdblock1 kernel 3M",
.offset = SZ_1M * 1,
.size
= SZ_1M * 3,
},
[2] = {
.name
= "mtdblock2 rootfs 6M",
.offset = SZ_1M * 4,
.size
= SZ_1M * 6,
},
[3] = {
.name
= "mtdblock3 apps 27M",
.offset = SZ_1M * 10,
.size
= SZ_1M * 27,
},
[4] = {
.name
= "mtdblock4 user 27M",
.offset = SZ_1M * 37,
.size
= SZ_1M * 27,
}
};
//modify end
6, 修改dm9000驱动程序文件：migrate-linux-2.6.28/drivers/net/dm9000.c
47行处：
#define CARDNAME
"dm9000"
#define DRV_VERSION
"1.31"
-#define INTMOD
(0x4A000004)
//These two line add by guowenxue 2009.05.15
-static void *intmod;
996行处
dm9000_open(struct net_device *dev)
{
board_info_t *db = dev->priv;
-
db->irq_res->flags |= IRQ_TYPE_EDGE_RISING;
// add by guowenxue,2009.05.15
-
unsigned long irqflags = db->irq_res->flags & IRQF_TRIGGER_MASK;
-
set_irq_type(dev->irq, IRQ_TYPE_EDGE_RISING); // add by guowenxue,2009.05.15
-
if (netif_msg_ifup(db))
dev_dbg(db->dev, "enabling %s\n", dev->name);
……..
1185行处函数static int __devinit dm9000_probe(struct platform_device *pdev)：
int i;
u32 id_val;
-// add by guowenxue,2009.05.15
-
intmod=ioremap_nocache(INTMOD,0x0000004);
-
writel(0x0,intmod);
-// add end
-
/* Init network device */
ndev = alloc_etherdev(sizeof(struct board_info));
if (!ndev) {
........
