我照着技创的极品arm做了一块板子，s3c2440的，网片为dm9000ae，cpu可以识别读出DM9000的id，但是与pc相连时出现：
U-Boot 1.1.2 (Jan 2 2008 - 10:49:23)
U-Boot code: 33C00000 -> 33C2B19C BSS: -> 33C64BCC
RAM Configuration:
Bank #0: 30000000 64 MB
Get flash bank 0 size @ 0x0
Total Flash bank's sizes: 0x200000
protect monitor 2b19c bytes @ address 0
Flash: 2 MB
NAND:Flash chip found:
Manufacturer ID: 0xEC, Chip ID: 0x76 (Samsung unknown 64Mb)
1 flash chips found. Total nand_chip size: 64 MB
64 MB
*** Warning - bad CRC, using default environment
Silicon Motion 501 not detected
In: serial
Out: serial
Err: serial
Found DM9000 ID:90000a46 at address 10000000, ethaddr = 08:00:3e:26:0a:5b!
DM9000 work in 16 bus width
Not link of ethernet
SD Initialize fail..
Hit any key to stop autoboot: 0
MDS522C@Xlongtech # set ipaddr 192.168.3.15
MDS522C@Xlongtech # set serverip 192.168.3.96
MDS522C@Xlongtech # t 30038000 eboot.nb0
DM9000 work in 16 bus width
Not link of ethernet
TFTP from server 192.168.3.96; our IP address is 192.168.3.15
Filename 'eboot.nb0'.
Load address: 0x30038000
Loading: T T T T T T T T T T
Retry count exceeded; starting again
TFTP from server 192.168.3.96; our IP address is 192.168.3.15
Filename 'eboot.nb0'.
Load address: 0x30038000
Loading: T T T T
一直重复，感觉与pc没有连接上，拔掉网线的现象与这个一摸一样，驱动程序如下：
#include <common.h>
#include <command.h>
#include <net.h>
#ifdef CONFIG_DRIVER_DM9000
#if (CONFIG_COMMANDS & CFG_CMD_NET)
#define DM9000_VID_L 0x28
#define DM9000_VID_H 0x29
#define DM9000_PID_L 0x2A
#define DM9000_PID_H 0x2B
#define DM9000_ID 0x90000A46
#define DM9000_INT_MII 0x00
#define DM9000_PPTR *(volatile u16 *)(DM9000_BASE)
#define DM9000_PDATA *(volatile u16 *)(DM9000_BASE + 4)
static unsigned char ior(int reg);
static int polling_times;
/* edit by davicom */
static void eth_mem_test (void)
{
u8 i;
u16 j , k ;
iow(0x00, 3);
udelay(50); /* delay 100us */
iow(0x00, 2);
iow(0xff , 0x00);
printf("\n <DM9000A> REG R/W TEST ");
for(i = 0; i < 7; i++)
{
iow(0x16 + i, (0x5a + i));
if(ior(0x16 + i) != (0x5a + i)) break;
iow(0x16 + i, 0x00);
}
if(i != 7)
printf("===> REG R/W FALSE ");
else
printf("===> REG R/W PASS ");
for(i = 0 ; i < 0x4 ; i++)
{
//if((i * 0x1000) != ((ior(0xf4)<<8)+ior(0xf5)))
//{
// printf("\n io mode error or data jump error");
// break;
//}
k = 0xaa55;
printf("\n <DM9000A> FIFO TEST R: %02x%02x W: %02x%02x ",
ior(0xf5) , ior(0xf4) , ior(0xfa) , ior(0xfb));
DM9000_PPTR = 0xf8;
for(j = 0 ; j < 0x1000 ; j += 2)
{
k -= 0x0303;
DM9000_PDATA = k;
}
DM9000_PPTR = 0xf0;
k = DM9000_PDATA;
k = DM9000_PDATA;
k = 0xaa55;
DM9000_PPTR = 0xf2;
for(j = 0 ; j < 0x1000 ; j += 2)
{
k -= 0x0303;
if (DM9000_PDATA != k)break;
}
if(j != 0x1000)
{
printf("===> FIFO TEST R/W FALSE ");
break;
}
else
printf("===> FIFO TEST R/W PASS ");
}
}
/* edit by davicom */
/* packet page register access functions */
static u32 GetDM9000ID(void)
{
u32 id_val;
DM9000_PPTR = DM9000_PID_H;
id_val = (DM9000_PDATA & 0xff) << 8;
DM9000_PPTR = DM9000_PID_L;
id_val+= (DM9000_PDATA & 0xff);
id_val = id_val << 16;
DM9000_PPTR = DM9000_VID_H;
id_val += (DM9000_PDATA & 0xff) << 8;
DM9000_PPTR = DM9000_VID_L;
id_val += (DM9000_PDATA & 0xff);
return id_val;
}
static unsigned short get_reg (int regno)
{
DM9000_PPTR = regno;
return (unsigned short) DM9000_PDATA;
}
static void put_reg (int regno, unsigned short val)
{
DM9000_PPTR = regno;
DM9000_PDATA = val;
}
static void iow(int reg, u8 value)
{
DM9000_PPTR = reg;
DM9000_PDATA = value & 0xff;
}
static unsigned char ior(int reg)
{
DM9000_PPTR = reg;
return DM9000_PDATA & 0xff;
}
static void eth_reset (void)
{
int IoMode;
u8 tmp;
//printf("---->eth_reset \n");
iow(0x1f, 0x00);/* Enable PHY , Let GPIO0 output value = 0*/
udelay(50);
iow(0, 3);/* register 0 set 1 in order to reset, auto clean after 10us*/
udelay(50);/* delay 100us */
iow(0, 3);/* register 0 set 1 in order to reset, auto clean after 10us*/
udelay(50);/* delay 100us */
IoMode = ior(0xfe) >> 6; /* ISR bit7:6 keeps I/O mode */
if(!IoMode)
printf("DM9000 work in 16 bus width\n");
else if(IoMode == 2)
printf("DM9000 work in 8 bus width\n");
else if(IoMode == 1)
printf("DM9000 work in 32 bus width\n");
else
printf("DM9000 work in wrong bus width, error\n");
iow(0, 0);
iow(0x8, 0x3f);/*Back Pressure Threshold Register*/
iow(0x2f, 0);/*Special Mode*/
iow(0x1, 0x2c);/*Clear Wakeup, TX1 and TX2 complete status*/
//iow(0xfe, 0x0f);
iow(0x5, 0x31);/* enable rx fuction */
iow(0xff, 0x80);
//iow(0x1e, 0x01); /* Let GPIO0 output */
//iow(0xff, 0x80); /* disable interrupt and sram read/write point auto return*/
//iow(0x01, 0xc); /* clear TX status */
//iow(0x5, 0x33); /* enable rx fuction, note: must set promiscuous mode */
//iow(0x5, 0x31); /* enable rx fuction */
//ior(0x6);
//iow(0x2, 1); /* enable tx fuction */
IoMode = ior(0x01);
if(IoMode & 0x40)
printf("Link on ethernet at:%d Mbps\n", (IoMode & 0x80) ? 10:100);
else
printf("Not link of ethernet\n");
//printf("<---- eth_reset \n");
}
void DM9000_get_enetaddr (uchar * addr)
{
int i, oft;
unsigned char env_enetaddr[6];
char *tmp = getenv ("ethaddr");
char *tmp1 = tmp;
char *end;
u32 ID;
for (i=0; i<6; i++) {
env_enetaddr = tmp ? simple_strtoul(tmp, &end, 16) : 0;
if (tmp)
tmp = (*end) ? end+1 : end;
}
memcpy (addr, env_enetaddr, 6);
ID = GetDM9000ID();
if ( ID != DM9000_ID){
printf("not found the dm9000\n");
return;}
printf("Found DM9000 ID:%x at address %x, ethaddr = %s!\n", ID, DM9000_BASE, tmp1);
eth_reset ();
for (i = 0, oft = 0x10; i < 6; i++, oft++)
iow(oft, addr);
iow(0x1d, 0x80);/*receive broadcast packets*/
return;
}
void eth_halt (void)
{
GetDM9000ID();
}
int eth_init (bd_t * bd)
{
//eth_mem_test();
eth_reset();
polling_times=0;
return 0;
}
/* Get a data block via Ethernet */
extern int eth_rx (void)
{
int i;
unsigned short rxlen;
unsigned short *addr;
unsigned short status;
u8 RxRead;
u8 *tmp;
polling_times++;
//printf("Read address=0x%04x %04x\n",ior(0xf4), ior(0xf5));
ior(0xf4); ior(0xf5);
RxRead = ior(0xf0);
RxRead = (DM9000_PDATA) & 0xff;
RxRead = (DM9000_PDATA) & 0xff;
RxRead = (DM9000_PDATA) & 0xff;
RxRead = (DM9000_PDATA) & 0xff;
RxRead = (DM9000_PDATA) & 0xff;
RxRead = (DM9000_PDATA) & 0xff;
//printf("Read address=0x%04x %04x\n",ior(0xfa), ior(0xfb));
//udelay(1000);
if (RxRead != 1) /* no data */
return 0;
DM9000_PPTR = 0xf2; /* set read ptr ++ */
status = DM9000_PDATA; /* get stat */
rxlen = DM9000_PDATA; /* get len */
//printf("rxlen = %d\n", rxlen);
if (rxlen > PKTSIZE_ALIGN + PKTALIGN)
printf ("packet too big! %d %d\n", rxlen, PKTSIZE_ALIGN + PKTALIGN);
for (addr = (unsigned short *) NetRxPackets[0], i = rxlen >> 1; i > 0; i--)
*addr++ = DM9000_PDATA;
if (rxlen & 1)
*addr = DM9000_PDATA;
/* Pass the packet up to the protocol layers. */
NetReceive (NetRxPackets[0], rxlen);
return rxlen;
}
/* Send a data block via Ethernet. */
extern int eth_send (volatile void *packet, int length)
{
volatile unsigned short *addr;
int tmo;
u8 TxStatus;
int length1 = length;
int IoMode;
retry:
TxStatus = ior(0x01);
TxStatus = TxStatus & 0xc;
#if 0
/* Test to see if the chip has allocated memory for the packet */
if (!TxStatus) {
printf ("unable to send packet; retrying... %d\n", TxStatus);
for (tmo = get_timer (0) + CFG_HZ; get_timer (0) < tmo;);
/*NOP*/;
IoMode = ior(0x01);
if(IoMode & 0x40)
eth_reset ();
goto retry;
}
#endif
//printf("polling times = %d\n",polling_times);
DM9000_PPTR = 0xf8; /* data copy ready set */
/* copy data */
for (addr = packet; length > 0; length -= 2)
{
//printf("[%02x][%02x]", *(u8 *)addr, *((u8 *)addr + 1));
DM9000_PDATA = *addr++;
}
//printf("\n");
iow(0xfd, (length1 >> 8) & 0xff); /*set transmit leng */
iow(0xfc, length1 & 0xff);
/* start transmit */
iow(0x02, 1);
polling_times=0;
return 0;
}
#endif /* COMMANDS & CFG_NET */
#endif /* CONFIG_DRIVER_DM9000 */
电路检查没有发现问题！！
希望各位大虾帮看看啊！！！
谢谢了！！！ |
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