2 * (C) Copyright 2001-2010
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 void eth_parse_enetaddr(const char *addr, uchar *enetaddr)
34 for (i = 0; i < 6; ++i) {
35 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
37 addr = (*end) ? end + 1 : end;
41 int eth_getenv_enetaddr(char *name, uchar *enetaddr)
43 eth_parse_enetaddr(getenv(name), enetaddr);
44 return is_valid_ether_addr(enetaddr);
47 int eth_setenv_enetaddr(char *name, const uchar *enetaddr)
51 sprintf(buf, "%pM", enetaddr);
53 return setenv(name, buf);
56 int eth_getenv_enetaddr_by_index(int index, uchar *enetaddr)
59 sprintf(enetvar, index ? "eth%daddr" : "ethaddr", index);
60 return eth_getenv_enetaddr(enetvar, enetaddr);
63 #ifdef CONFIG_NET_MULTI
65 static int eth_mac_skip(int index)
69 sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
70 return ((skip_state = getenv(enetvar)) != NULL);
74 * CPU and board-specific Ethernet initializations. Aliased function
75 * signals caller to move on
77 static int __def_eth_init(bd_t *bis)
81 int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
82 int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
84 extern int mv6436x_eth_initialize(bd_t *);
85 extern int mv6446x_eth_initialize(bd_t *);
88 extern void (*push_packet)(volatile void *, int);
93 } eth_rcv_bufs[PKTBUFSRX];
95 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
98 static struct eth_device *eth_devices, *eth_current;
100 struct eth_device *eth_get_dev(void)
105 struct eth_device *eth_get_dev_by_name(const char *devname)
107 struct eth_device *dev, *target_dev;
115 if (strcmp(devname, dev->name) == 0) {
120 } while (dev != eth_devices);
125 struct eth_device *eth_get_dev_by_index(int index)
127 struct eth_device *dev, *target_dev;
142 } while (dev != eth_devices);
147 int eth_get_dev_index (void)
149 struct eth_device *dev;
156 for (dev = eth_devices; dev; dev = dev->next) {
157 if (dev == eth_current)
169 static void eth_current_changed(void)
171 #ifdef CONFIG_NET_MULTI
173 char *act = getenv("ethact");
174 /* update current ethernet name */
177 if (act == NULL || strcmp(act, eth_current->name) != 0)
178 setenv("ethact", eth_current->name);
181 * remove the variable completely if there is no active
184 else if (act != NULL)
185 setenv("ethact", NULL);
190 int eth_register(struct eth_device *dev)
192 struct eth_device *d;
194 eth_current = eth_devices = dev;
195 eth_current_changed();
197 for (d=eth_devices; d->next!=eth_devices; d=d->next)
202 dev->state = ETH_STATE_INIT;
203 dev->next = eth_devices;
208 int eth_initialize(bd_t *bis)
210 unsigned char env_enetaddr[6];
216 show_boot_progress (64);
217 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
221 * If board-specific initialization exists, call it.
222 * If not, call a CPU-specific one
224 if (board_eth_init != __def_eth_init) {
225 if (board_eth_init(bis) < 0)
226 printf("Board Net Initialization Failed\n");
227 } else if (cpu_eth_init != __def_eth_init) {
228 if (cpu_eth_init(bis) < 0)
229 printf("CPU Net Initialization Failed\n");
231 printf("Net Initialization Skipped\n");
233 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
234 mv6436x_eth_initialize(bis);
236 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
237 mv6446x_eth_initialize(bis);
240 puts ("No ethernet found.\n");
241 show_boot_progress (-64);
243 struct eth_device *dev = eth_devices;
244 char *ethprime = getenv ("ethprime");
246 show_boot_progress (65);
251 printf("%s", dev->name);
253 if (ethprime && strcmp (dev->name, ethprime) == 0) {
258 if (strchr(dev->name, ' '))
259 puts("\nWarning: eth device name has a space!\n");
261 eth_getenv_enetaddr_by_index(eth_number, env_enetaddr);
263 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
264 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
265 memcmp(dev->enetaddr, env_enetaddr, 6))
267 printf ("\nWarning: %s MAC addresses don't match:\n",
269 printf ("Address in SROM is %pM\n",
271 printf ("Address in environment is %pM\n",
275 memcpy(dev->enetaddr, env_enetaddr, 6);
277 if (dev->write_hwaddr &&
278 !eth_mac_skip(eth_number) &&
279 is_valid_ether_addr(dev->enetaddr)) {
280 dev->write_hwaddr(dev);
285 } while(dev != eth_devices);
287 eth_current_changed();
294 #ifdef CONFIG_MCAST_TFTP
296 * mcast_addr: multicast ipaddr from which multicast Mac is made
297 * join: 1=join, 0=leave.
299 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
302 if (!eth_current || !eth_current->mcast)
304 mcast_mac[5] = htonl(mcast_ip) & 0xff;
305 mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
306 mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
310 return eth_current->mcast(eth_current, mcast_mac, join);
313 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
314 * and this is the ethernet-crc method needed for TSEC -- and perhaps
315 * some other adapter -- hash tables
317 #define CRCPOLY_LE 0xedb88320
318 u32 ether_crc (size_t len, unsigned char const *p)
325 for (i = 0; i < 8; i++)
326 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
328 /* an reverse the bits, cuz of way they arrive -- last-first */
329 crc = (crc >> 16) | (crc << 16);
330 crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
331 crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
332 crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
333 crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
340 int eth_init(bd_t *bis)
343 struct eth_device *old_current, *dev;
346 puts ("No ethernet found.\n");
350 /* Sync environment with network devices */
354 uchar env_enetaddr[6];
356 if (eth_getenv_enetaddr_by_index(eth_number, env_enetaddr))
357 memcpy(dev->enetaddr, env_enetaddr, 6);
361 } while (dev != eth_devices);
363 old_current = eth_current;
365 debug("Trying %s\n", eth_current->name);
367 if (eth_current->init(eth_current,bis) >= 0) {
368 eth_current->state = ETH_STATE_ACTIVE;
375 } while (old_current != eth_current);
385 eth_current->halt(eth_current);
387 eth_current->state = ETH_STATE_PASSIVE;
390 int eth_send(volatile void *packet, int length)
395 return eth_current->send(eth_current, packet, length);
403 return eth_current->recv(eth_current);
407 static void eth_save_packet(volatile void *packet, int length)
409 volatile char *p = packet;
412 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
415 if (PKTSIZE < length)
418 for (i = 0; i < length; i++)
419 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
421 eth_rcv_bufs[eth_rcv_last].length = length;
422 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
425 int eth_receive(volatile void *packet, int length)
427 volatile char *p = packet;
428 void *pp = push_packet;
431 if (eth_rcv_current == eth_rcv_last) {
432 push_packet = eth_save_packet;
436 if (eth_rcv_current == eth_rcv_last)
440 if (length < eth_rcv_bufs[eth_rcv_current].length)
443 length = eth_rcv_bufs[eth_rcv_current].length;
445 for (i = 0; i < length; i++)
446 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
448 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
451 #endif /* CONFIG_API */
453 void eth_try_another(int first_restart)
455 static struct eth_device *first_failed = NULL;
459 * Do not rotate between network interfaces when
460 * 'ethrotate' variable is set to 'no'.
462 if (((ethrotate = getenv ("ethrotate")) != NULL) &&
463 (strcmp(ethrotate, "no") == 0))
470 first_failed = eth_current;
473 eth_current = eth_current->next;
475 eth_current_changed();
477 if (first_failed == eth_current) {
482 void eth_set_current(void)
484 static char *act = NULL;
485 static int env_changed_id = 0;
486 struct eth_device* old_current;
489 if (!eth_current) /* XXX no current */
492 env_id = get_env_id();
493 if ((act == NULL) || (env_changed_id != env_id)) {
494 act = getenv("ethact");
495 env_changed_id = env_id;
498 old_current = eth_current;
500 if (strcmp(eth_current->name, act) == 0)
502 eth_current = eth_current->next;
503 } while (old_current != eth_current);
506 eth_current_changed();
509 char *eth_get_name (void)
511 return (eth_current ? eth_current->name : "unknown");
514 #else /* !CONFIG_NET_MULTI */
516 #warning Ethernet driver is deprecated. Please update to use CONFIG_NET_MULTI
518 extern int at91rm9200_miiphy_initialize(bd_t *bis);
519 extern int mcf52x2_miiphy_initialize(bd_t *bis);
520 extern int ns7520_miiphy_initialize(bd_t *bis);
523 int eth_initialize(bd_t *bis)
525 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
529 #if defined(CONFIG_AT91RM9200)
530 at91rm9200_miiphy_initialize(bis);
532 #if defined(CONFIG_MCF52x2)
533 mcf52x2_miiphy_initialize(bis);
535 #if defined(CONFIG_DRIVER_NS7520_ETHERNET)
536 ns7520_miiphy_initialize(bis);