2 * (C) Copyright 2001-2004
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 #if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
31 static char *act = NULL;
32 static int env_changed_id = 0;
35 * CPU and board-specific Ethernet initializations. Aliased function
36 * signals caller to move on
38 static int __def_eth_init(bd_t *bis)
42 int cpu_eth_init(bd_t *bis) __attribute((weak, alias("__def_eth_init")));
43 int board_eth_init(bd_t *bis) __attribute((weak, alias("__def_eth_init")));
45 extern int mv6436x_eth_initialize(bd_t *);
46 extern int mv6446x_eth_initialize(bd_t *);
49 extern void (*push_packet)(volatile void *, int);
54 } eth_rcv_bufs[PKTBUFSRX];
56 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
59 static struct eth_device *eth_devices, *eth_current;
61 struct eth_device *eth_get_dev(void)
66 struct eth_device *eth_get_dev_by_name(char *devname)
68 struct eth_device *dev, *target_dev;
76 if (strcmp(devname, dev->name) == 0) {
81 } while (dev != eth_devices);
86 struct eth_device *eth_get_dev_by_index(int index)
88 struct eth_device *dev, *target_dev;
103 } while (dev != eth_devices);
108 int eth_get_dev_index (void)
110 struct eth_device *dev;
117 for (dev = eth_devices; dev; dev = dev->next) {
118 if (dev == eth_current)
130 int eth_register(struct eth_device* dev)
132 struct eth_device *d;
135 eth_current = eth_devices = dev;
136 #ifdef CONFIG_NET_MULTI
137 /* update current ethernet name */
139 char *act = getenv("ethact");
140 if (act == NULL || strcmp(act, eth_current->name) != 0)
141 setenv("ethact", eth_current->name);
145 for (d=eth_devices; d->next!=eth_devices; d=d->next);
149 dev->state = ETH_STATE_INIT;
150 dev->next = eth_devices;
155 int eth_initialize(bd_t *bis)
158 unsigned char env_enetaddr[6];
159 int i, eth_number = 0;
165 show_boot_progress (64);
166 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
169 /* Try board-specific initialization first. If it fails or isn't
170 * present, try the cpu-specific initialization */
171 if (board_eth_init(bis) < 0)
174 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
175 mv6436x_eth_initialize(bis);
177 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
178 mv6446x_eth_initialize(bis);
181 puts ("No ethernet found.\n");
182 show_boot_progress (-64);
184 struct eth_device *dev = eth_devices;
185 char *ethprime = getenv ("ethprime");
187 show_boot_progress (65);
192 printf("%s", dev->name);
194 if (ethprime && strcmp (dev->name, ethprime) == 0) {
199 sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
200 tmp = getenv (enetvar);
202 for (i=0; i<6; i++) {
203 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
205 tmp = (*end) ? end+1 : end;
208 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
209 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
210 memcmp(dev->enetaddr, env_enetaddr, 6))
212 printf ("\nWarning: %s MAC addresses don't match:\n",
214 printf ("Address in SROM is "
215 "%02X:%02X:%02X:%02X:%02X:%02X\n",
216 dev->enetaddr[0], dev->enetaddr[1],
217 dev->enetaddr[2], dev->enetaddr[3],
218 dev->enetaddr[4], dev->enetaddr[5]);
219 printf ("Address in environment is "
220 "%02X:%02X:%02X:%02X:%02X:%02X\n",
221 env_enetaddr[0], env_enetaddr[1],
222 env_enetaddr[2], env_enetaddr[3],
223 env_enetaddr[4], env_enetaddr[5]);
226 memcpy(dev->enetaddr, env_enetaddr, 6);
231 } while(dev != eth_devices);
233 #ifdef CONFIG_NET_MULTI
234 /* update current ethernet name */
236 char *act = getenv("ethact");
237 if (act == NULL || strcmp(act, eth_current->name) != 0)
238 setenv("ethact", eth_current->name);
240 setenv("ethact", NULL);
249 void eth_set_enetaddr(int num, char *addr) {
250 struct eth_device *dev;
251 unsigned char enetaddr[6];
255 debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
260 for (i=0; i<6; i++) {
261 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
263 addr = (*end) ? end+1 : end;
270 if (dev == eth_devices)
274 debug ( "Setting new HW address on %s\n"
275 "New Address is %02X:%02X:%02X:%02X:%02X:%02X\n",
277 enetaddr[0], enetaddr[1],
278 enetaddr[2], enetaddr[3],
279 enetaddr[4], enetaddr[5]);
281 memcpy(dev->enetaddr, enetaddr, 6);
283 #ifdef CONFIG_MCAST_TFTP
285 * mcast_addr: multicast ipaddr from which multicast Mac is made
286 * join: 1=join, 0=leave.
288 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
291 if (!eth_current || !eth_current->mcast)
293 mcast_mac[5] = htonl(mcast_ip) & 0xff;
294 mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
295 mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
299 return eth_current->mcast(eth_current, mcast_mac, join);
302 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
303 * and this is the ethernet-crc method needed for TSEC -- and perhaps
304 * some other adapter -- hash tables
306 #define CRCPOLY_LE 0xedb88320
307 u32 ether_crc (size_t len, unsigned char const *p)
314 for (i = 0; i < 8; i++)
315 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
317 /* an reverse the bits, cuz of way they arrive -- last-first */
318 crc = (crc >> 16) | (crc << 16);
319 crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
320 crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
321 crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
322 crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
329 int eth_init(bd_t *bis)
331 struct eth_device* old_current;
334 puts ("No ethernet found.\n");
338 old_current = eth_current;
340 debug ("Trying %s\n", eth_current->name);
342 if (eth_current->init(eth_current,bis) >= 0) {
343 eth_current->state = ETH_STATE_ACTIVE;
350 } while (old_current != eth_current);
360 eth_current->halt(eth_current);
362 eth_current->state = ETH_STATE_PASSIVE;
365 int eth_send(volatile void *packet, int length)
370 return eth_current->send(eth_current, packet, length);
378 return eth_current->recv(eth_current);
382 static void eth_save_packet(volatile void *packet, int length)
384 volatile char *p = packet;
387 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
390 if (PKTSIZE < length)
393 for (i = 0; i < length; i++)
394 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
396 eth_rcv_bufs[eth_rcv_last].length = length;
397 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
400 int eth_receive(volatile void *packet, int length)
402 volatile char *p = packet;
403 void *pp = push_packet;
406 if (eth_rcv_current == eth_rcv_last) {
407 push_packet = eth_save_packet;
411 if (eth_rcv_current == eth_rcv_last)
415 if (length < eth_rcv_bufs[eth_rcv_current].length)
418 length = eth_rcv_bufs[eth_rcv_current].length;
420 for (i = 0; i < length; i++)
421 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
423 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
426 #endif /* CONFIG_API */
428 void eth_try_another(int first_restart)
430 static struct eth_device *first_failed = NULL;
434 * Do not rotate between network interfaces when
435 * 'ethrotate' variable is set to 'no'.
437 if (((ethrotate = getenv ("ethrotate")) != NULL) &&
438 (strcmp(ethrotate, "no") == 0))
445 first_failed = eth_current;
448 eth_current = eth_current->next;
450 #ifdef CONFIG_NET_MULTI
451 /* update current ethernet name */
453 char *act = getenv("ethact");
454 if (act == NULL || strcmp(act, eth_current->name) != 0)
455 setenv("ethact", eth_current->name);
459 if (first_failed == eth_current) {
464 #ifdef CONFIG_NET_MULTI
465 void eth_set_current(void)
467 struct eth_device* old_current;
470 if (!eth_current) /* XXX no current */
473 env_id = get_env_id();
474 if ((act == NULL) || (env_changed_id != env_id)) {
475 act = getenv("ethact");
476 env_changed_id = env_id;
479 old_current = eth_current;
481 if (strcmp(eth_current->name, act) == 0)
483 eth_current = eth_current->next;
484 } while (old_current != eth_current);
487 setenv("ethact", eth_current->name);
491 char *eth_get_name (void)
493 return (eth_current ? eth_current->name : "unknown");
495 #elif defined(CONFIG_CMD_NET) && !defined(CONFIG_NET_MULTI)
497 extern int at91rm9200_miiphy_initialize(bd_t *bis);
498 extern int emac4xx_miiphy_initialize(bd_t *bis);
499 extern int mcf52x2_miiphy_initialize(bd_t *bis);
500 extern int ns7520_miiphy_initialize(bd_t *bis);
501 extern int davinci_eth_miiphy_initialize(bd_t *bis);
504 int eth_initialize(bd_t *bis)
506 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
510 #if defined(CONFIG_AT91RM9200)
511 at91rm9200_miiphy_initialize(bis);
513 #if defined(CONFIG_PPC4xx_EMAC)
514 emac4xx_miiphy_initialize(bis);
516 #if defined(CONFIG_MCF52x2)
517 mcf52x2_miiphy_initialize(bis);
519 #if defined(CONFIG_DRIVER_NS7520_ETHERNET)
520 ns7520_miiphy_initialize(bis);
522 #if defined(CONFIG_DRIVER_TI_EMAC)
523 davinci_eth_miiphy_initialize(bis);