u-boot-2012.04.01移植到mini2440③
配置DM9000
搜索drivers/net/Makefile，发现COBJS-$(CONFIG_DRIVER_DM9000) += dm9000x.o
在mini2440.h中用的是cs8900，去掉cs8900的宏，添加上我们的
#define CONFIG_DM9000_BASE 0x20000000
#define DM9000_IO CONFIG_DM9000_BASE
#define DM9000_DATA (CONFIG_DM9000_BASE + 4)
在source insight中搜索“No ethernet found.”找出原因
eth_initialize (board.c)
board_eth_init (mini2440/smdk2410.c)
cs8900_initialize此处不合适，添加DM9000的函数
#ifdef CONFIG_CS8900
rc = cs8900_initialize(0, CONFIG_CS8900_BASE);
#endif
#ifdef CONFIG_DRIVER_DM9000
rc = dm9000_initialize(bis);
#endif
set ipaddr 192.168.124.4 (连上网线同自己要ping的机器在一个网段)
set serverip 192.168.124.3
set gatewayip 255.255.0.0 (同自己要ping的机器一致)
set ethaddr 08:00:27:71:89:bb
ping 192.168.124.3
出现一个错误could not establish link
解决错误并加快速度
修改drivers\net\dm9000x.c
#if 0
i = 0;
while (!(dm9000_phy_read(1) & 0x20)) { /* autonegation complete bit */
udelay(1000);
i++;
if (i == 10000) {
printf("could not establish link\n");
return 0;
}
}
/* see what we've got */
lnk = dm9000_phy_read(17) >> 12;
printf("operating at ");
switch (lnk) {
case 1:
printf("10M half duplex ");
break;
case 2:
printf("10M full duplex ");
break;
case 4:
printf("100M half duplex ");
break;
case 8:
printf("100M full duplex ");
break;
default:
printf("unknown: %d ", lnk);
break;
}
printf("mode\n");
#endif
如果出现not alive
打开drivers/net/dm9000x.c ，定位到456行附近，屏蔽掉dm9000_halt函数中的内容：
/*
Stop the interface.
The interface is stopped when it is brought.
*/
static void dm9000_halt(struct eth_device *netdev)
{
#if 0
DM9000_DBG("%s\n", __func__);
/* 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 */
#endif
}
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修改环境变量
在mini2440.h中加上
#define CONFIG_BOOTARGS "console=ttySAC0 root=/dev/mtdblock3"
#define CONFIG_BOOTCOMMAND "nand read 30000000 0x60000 0x500000;bootm 30000000"
修改
#define CONFIG_NETMASK 255.255.0.0
#define CONFIG_IPADDR 169.254.252.201
#define CONFIG_SERVERIP 169.254.252.200
加上
#define CONFIG_ETHADDR 08:00:27:71:89:bb
