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本帖最后由 yians 于 2010-06-10 11:18 编辑
由于一些原因选用了u-boot-1.1.6移植到mini2440，现在在dm9000网卡驱动这卡住了。
问题是这样的：
我将dm9000的一些宏定义添加完后在编译烧写，启动u-boot，串口会出现“Net：No ethernet found.”。我发现它是在net/eth.c中的eth_initialize()里打印的：
00255: if (!eth_devices) {
00256: puts ("No ethernet found.\n" );
而eth_initialize()是在lib-arm/board.c中start_armboot()中调用。
于是我去找给eth_devices赋值的地方，可是在eth_initialize()中除了在初始的地方给eth_devices=NULL以外，并没有更改，也就是这种错误是应该的？那dm9000的初始化应该在哪做的呢？
还有我发现eth.c中和dm9000x.c中都定义eth_init()，eth_halt()等函数，这不会导致冲突吗？其实这个问题对于cs8900也是一样的。到底如何解释呢？
这在最新版的u-boot里没有问题，最新版中dm9000x.c已经改为dm9000_init()，dm9000_halt(),初始化过程与1.1.6也不一样，所以希望能从1.1.6给出解释。
真的谢谢了，我实在是自己解决不了了。
1.1.6版本的u-boot可以在 http://www.icdev.com.cn/batch.viewlink.php?itemid=1694 里下。期待好心人啊。
eth_initialize()的代码如下：
int eth_initialize(bd_t *bis)
{
char enetvar[32], env_enetaddr[6];
int i, eth_number = 0;
char *tmp, *end;
eth_devices = NULL;
eth_current = NULL;
#if defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)
miiphy_init();
#endif
#ifdef CONFIG_DB64360
mv6436x_eth_initialize(bis);
#endif
#ifdef CONFIG_CPCI750
mv6436x_eth_initialize(bis);
#endif
#ifdef CONFIG_DB64460
mv6446x_eth_initialize(bis);
#endif
#if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) && !defined(CONFIG_AP1000)
ppc_4xx_eth_initialize(bis);
#endif
#ifdef CONFIG_INCA_IP_SWITCH
inca_switch_initialize(bis);
#endif
#ifdef CONFIG_PLB2800_ETHER
plb2800_eth_initialize(bis);
#endif
#ifdef SCC_ENET
scc_initialize(bis);
#endif
#if defined(CONFIG_MPC5xxx_FEC)
mpc5xxx_fec_initialize(bis);
#endif
#if defined(CONFIG_MPC8220_FEC)
mpc8220_fec_initialize(bis);
#endif
#if defined(CONFIG_SK98 )
skge_initialize(bis);
#endif
#if defined(CONFIG_MPC85XX_TSEC1)
tsec_initialize(bis, 0, CONFIG_MPC85XX_TSEC1_NAME);
#elif defined(CONFIG_MPC83XX_TSEC1)
tsec_initialize(bis, 0, CONFIG_MPC83XX_TSEC1_NAME);
#endif
#if defined(CONFIG_MPC85XX_TSEC2)
tsec_initialize(bis, 1, CONFIG_MPC85XX_TSEC2_NAME);
#elif defined(CONFIG_MPC83XX_TSEC2)
tsec_initialize(bis, 1, CONFIG_MPC83XX_TSEC2_NAME);
#endif
#if defined(CONFIG_MPC85XX_FEC)
tsec_initialize(bis, 2, CONFIG_MPC85XX_FEC_NAME);
#else
# if defined(CONFIG_MPC85XX_TSEC3)
tsec_initialize(bis, 2, CONFIG_MPC85XX_TSEC3_NAME);
# elif defined(CONFIG_MPC83XX_TSEC3)
tsec_initialize(bis, 2, CONFIG_MPC83XX_TSEC3_NAME);
# endif
# if defined(CONFIG_MPC85XX_TSEC4)
tsec_initialize(bis, 3, CONFIG_MPC85XX_TSEC4_NAME);
# elif defined(CONFIG_MPC83XX_TSEC4)
tsec_initialize(bis, 3, CONFIG_MPC83XX_TSEC4_NAME);
# endif
#endif
#if defined(CONFIG_MPC86XX_TSEC1)
tsec_initialize(bis, 0, CONFIG_MPC86XX_TSEC1_NAME);
#endif
#if defined(CONFIG_MPC86XX_TSEC2)
tsec_initialize(bis, 1, CONFIG_MPC86XX_TSEC2_NAME);
#endif
#if defined(CONFIG_MPC86XX_TSEC3)
tsec_initialize(bis, 2, CONFIG_MPC86XX_TSEC3_NAME);
#endif
#if defined(CONFIG_MPC86XX_TSEC4)
tsec_initialize(bis, 3, CONFIG_MPC86XX_TSEC4_NAME);
#endif
#if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
fec_initialize(bis);
#endif
#if defined(CONFIG_AU1X00)
au1x00_enet_initialize(bis);
#endif
#if defined(CONFIG_IXP4XX_NPE)
npe_initialize(bis);
#endif
#ifdef CONFIG_E1000
e1000_initialize(bis);
#endif
#ifdef CONFIG_EEPRO100
eepro100_initialize(bis);
#endif
#ifdef CONFIG_TULIP
dc21x4x_initialize(bis);
#endif
#ifdef CONFIG_3COM
eth_3com_initialize(bis);
#endif
#ifdef CONFIG_PCNET
pcnet_initialize(bis);
#endif
#ifdef CFG_GT_6426x
gt6426x_eth_initialize(bis);
#endif
#ifdef CONFIG_NATSEMI
natsemi_initialize(bis);
#endif
#ifdef CONFIG_NS8382X
ns8382x_initialize(bis);
#endif
#if defined(CONFIG_RTL8139)
rtl8139_initialize(bis);
#endif
#if defined(CONFIG_RTL8169)
rtl8169_initialize(bis);
#endif
if (!eth_devices) {
puts ("No ethernet found.\n" );
} else {
struct eth_device *dev = eth_devices;
char *ethprime = getenv ("ethprime" );
do {
if (eth_number)
puts (", " );
printf("%s", dev->name);
if (ethprime && strcmp (dev->name, ethprime) == 0) {
eth_current = dev;
puts (" [PRIME]" );
}
sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
tmp = getenv (enetvar);
for (i=0; i<6; i++) {
env_enetaddr = tmp ? simple_strtoul(tmp, &end, 16) : 0;
if (tmp)
tmp = (*end) ? end+1 : end;
}
if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
memcmp(dev->enetaddr, env_enetaddr, 6))
{
printf ("\nWarning: %s MAC addresses don't match:\n",
dev->name);
printf ("Address in SROM is "
"%02X:%02X:%02X:%02X:%02X:%02X\n",
dev->enetaddr[0], dev->enetaddr[1],
dev->enetaddr[2], dev->enetaddr[3],
dev->enetaddr[4], dev->enetaddr[5]);
printf ("Address in environment is "
"%02X:%02X:%02X:%02X:%02X:%02X\n",
env_enetaddr[0], env_enetaddr[1],
env_enetaddr[2], env_enetaddr[3],
env_enetaddr[4], env_enetaddr[5]);
}
memcpy(dev->enetaddr, env_enetaddr, 6);
}
eth_number++;
dev = dev->next;
} while(dev != eth_devices);
#ifdef CONFIG_NET_MULTI
/* update current ethernet name */
if (eth_current) {
char *act = getenv("ethact" );
if (act == NULL || strcmp(act, eth_current->name) != 0)
setenv("ethact", eth_current->name);
} else
setenv("ethact", NULL);
#endif
putc ('\n');
}
return eth_number;
} |
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发表于 2010-06-10 11:14
