修正uboot网络不可用

通过使用uboot的网络功能可以更新ubook,烧写内核,文件系统,如果网络功能不可能,那还不如同变砖了一样.当然如果支持sd卡启动,可能通过sd卡完成这些功能,但是也太过麻烦了.飞凌的6410开发板提供的uboot的网络驱动是cs8900,但是实际上网卡是dm9000ae.

烧入后发无法ping通,tftp不可用,输出:

CS8900 Ethernet chip not found?!

1.修改include/configs/smdk6410.h

#ifdef 	CONFIG_DRIVER_SMC911X	
#undef	CONFIG_DRIVER_CS8900	
#define CONFIG_DRIVER_SMC911X_BASE	0x18800300
#else
//注释掉下面3行
//#define CONFIG_DRIVER_CS8900	0	/* we have a CS8900 on-board */
//#define CS8900_BASE	  	0x18800300
//#define CS8900_BUS16		1 	/* the Linux driver does accesses as shorts */
//增加下面4行
#define CONFIG_DRIVER_DM9000                1
#define CONFIG_DM9000_BASE          0x18000000
#define DM9000_IO                   CONFIG_DM9000_BASE
#define DM9000_DATA                 (CONFIG_DM9000_BASE+4)
#define CONFIG_DM9000_USE_16BIT
//#define CONFIG_DM9000_DEBUG
#endif

char *s, *e;
s = getenv ("ethaddr");
for (i = 0; i < 6; ++i) 
{
	bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
	if (s)
		s = (*e) ? e + 1 : e;
}

for (i = 0, oft = 0x16; i < 8; i++, oft++)
	DM9000_iow(oft,0x00);
	//DM9000_iow(oft, 0xff);

void
eth_halt(void)
{
	DM9000_DBG("eth_halt\n");


	/* RESET devie */
	//phy_write(0, 0x8000);	/* PHY RESET */
	//DM9000_iow(DM9000_GPR, 0x01);	/* Power-Down PHY */
	DM9000_iow(DM9000_IMR, 0x80);	/* Disable all interrupt */
	DM9000_iow(DM9000_RCR, 0x00);	/* Disable RX */
}