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)
32 * CPU and board-specific Ethernet initializations. Aliased function
33 * signals caller to move on
35 static int __def_eth_init(bd_t *bis)
39 int cpu_eth_init(bd_t *bis) __attribute((weak, alias("__def_eth_init")));
40 int board_eth_init(bd_t *bis) __attribute((weak, alias("__def_eth_init")));
42 extern int mv6436x_eth_initialize(bd_t *);
43 extern int mv6446x_eth_initialize(bd_t *);
46 extern void (*push_packet)(volatile void *, int);
51 } eth_rcv_bufs[PKTBUFSRX];
53 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
56 static struct eth_device *eth_devices, *eth_current;
58 struct eth_device *eth_get_dev(void)
63 struct eth_device *eth_get_dev_by_name(char *devname)
65 struct eth_device *dev, *target_dev;
73 if (strcmp(devname, dev->name) == 0) {
78 } while (dev != eth_devices);
83 struct eth_device *eth_get_dev_by_index(int index)
85 struct eth_device *dev, *target_dev;
100 } while (dev != eth_devices);
105 int eth_get_dev_index (void)
107 struct eth_device *dev;
114 for (dev = eth_devices; dev; dev = dev->next) {
115 if (dev == eth_current)
127 int eth_register(struct eth_device* dev)
129 struct eth_device *d;
132 eth_current = eth_devices = dev;
133 #ifdef CONFIG_NET_MULTI
134 /* update current ethernet name */
136 char *act = getenv("ethact");
137 if (act == NULL || strcmp(act, eth_current->name) != 0)
138 setenv("ethact", eth_current->name);
142 for (d=eth_devices; d->next!=eth_devices; d=d->next);
146 dev->state = ETH_STATE_INIT;
147 dev->next = eth_devices;
152 int eth_initialize(bd_t *bis)
155 unsigned char env_enetaddr[6];
156 int i, eth_number = 0;
162 show_boot_progress (64);
163 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
166 /* Try board-specific initialization first. If it fails or isn't
167 * present, try the cpu-specific initialization */
168 if (board_eth_init(bis) < 0)
171 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
172 mv6436x_eth_initialize(bis);
174 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
175 mv6446x_eth_initialize(bis);
178 puts ("No ethernet found.\n");
179 show_boot_progress (-64);
181 struct eth_device *dev = eth_devices;
182 char *ethprime = getenv ("ethprime");
184 show_boot_progress (65);
189 printf("%s", dev->name);
191 if (ethprime && strcmp (dev->name, ethprime) == 0) {
196 sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
197 tmp = getenv (enetvar);
199 for (i=0; i<6; i++) {
200 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
202 tmp = (*end) ? end+1 : end;
205 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
206 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
207 memcmp(dev->enetaddr, env_enetaddr, 6))
209 printf ("\nWarning: %s MAC addresses don't match:\n",
211 printf ("Address in SROM is "
212 "%02X:%02X:%02X:%02X:%02X:%02X\n",
213 dev->enetaddr[0], dev->enetaddr[1],
214 dev->enetaddr[2], dev->enetaddr[3],
215 dev->enetaddr[4], dev->enetaddr[5]);
216 printf ("Address in environment is "
217 "%02X:%02X:%02X:%02X:%02X:%02X\n",
218 env_enetaddr[0], env_enetaddr[1],
219 env_enetaddr[2], env_enetaddr[3],
220 env_enetaddr[4], env_enetaddr[5]);
223 memcpy(dev->enetaddr, env_enetaddr, 6);
228 } while(dev != eth_devices);
230 #ifdef CONFIG_NET_MULTI
231 /* update current ethernet name */
233 char *act = getenv("ethact");
234 if (act == NULL || strcmp(act, eth_current->name) != 0)
235 setenv("ethact", eth_current->name);
237 setenv("ethact", NULL);
246 void eth_set_enetaddr(int num, char *addr) {
247 struct eth_device *dev;
248 unsigned char enetaddr[6];
252 debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
257 for (i=0; i<6; i++) {
258 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
260 addr = (*end) ? end+1 : end;
267 if (dev == eth_devices)
271 debug ( "Setting new HW address on %s\n"
272 "New Address is %02X:%02X:%02X:%02X:%02X:%02X\n",
274 enetaddr[0], enetaddr[1],
275 enetaddr[2], enetaddr[3],
276 enetaddr[4], enetaddr[5]);
278 memcpy(dev->enetaddr, enetaddr, 6);
280 #ifdef CONFIG_MCAST_TFTP
282 * mcast_addr: multicast ipaddr from which multicast Mac is made
283 * join: 1=join, 0=leave.
285 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
288 if (!eth_current || !eth_current->mcast)
290 mcast_mac[5] = htonl(mcast_ip) & 0xff;
291 mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
292 mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
296 return eth_current->mcast(eth_current, mcast_mac, join);
299 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
300 * and this is the ethernet-crc method needed for TSEC -- and perhaps
301 * some other adapter -- hash tables
303 #define CRCPOLY_LE 0xedb88320
304 u32 ether_crc (size_t len, unsigned char const *p)
311 for (i = 0; i < 8; i++)
312 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
314 /* an reverse the bits, cuz of way they arrive -- last-first */
315 crc = (crc >> 16) | (crc << 16);
316 crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
317 crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
318 crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
319 crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
326 int eth_init(bd_t *bis)
328 struct eth_device* old_current;
331 puts ("No ethernet found.\n");
335 old_current = eth_current;
337 debug ("Trying %s\n", eth_current->name);
339 if (eth_current->init(eth_current,bis) >= 0) {
340 eth_current->state = ETH_STATE_ACTIVE;
347 } while (old_current != eth_current);
357 eth_current->halt(eth_current);
359 eth_current->state = ETH_STATE_PASSIVE;
362 int eth_send(volatile void *packet, int length)
367 return eth_current->send(eth_current, packet, length);
375 return eth_current->recv(eth_current);
379 static void eth_save_packet(volatile void *packet, int length)
381 volatile char *p = packet;
384 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
387 if (PKTSIZE < length)
390 for (i = 0; i < length; i++)
391 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
393 eth_rcv_bufs[eth_rcv_last].length = length;
394 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
397 int eth_receive(volatile void *packet, int length)
399 volatile char *p = packet;
400 void *pp = push_packet;
403 if (eth_rcv_current == eth_rcv_last) {
404 push_packet = eth_save_packet;
408 if (eth_rcv_current == eth_rcv_last)
412 if (length < eth_rcv_bufs[eth_rcv_current].length)
415 length = eth_rcv_bufs[eth_rcv_current].length;
417 for (i = 0; i < length; i++)
418 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
420 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
423 #endif /* CONFIG_API */
425 void eth_try_another(int first_restart)
427 static struct eth_device *first_failed = NULL;
431 * Do not rotate between network interfaces when
432 * 'ethrotate' variable is set to 'no'.
434 if (((ethrotate = getenv ("ethrotate")) != NULL) &&
435 (strcmp(ethrotate, "no") == 0))
442 first_failed = eth_current;
445 eth_current = eth_current->next;
447 #ifdef CONFIG_NET_MULTI
448 /* update current ethernet name */
450 char *act = getenv("ethact");
451 if (act == NULL || strcmp(act, eth_current->name) != 0)
452 setenv("ethact", eth_current->name);
456 if (first_failed == eth_current) {
461 #ifdef CONFIG_NET_MULTI
462 void eth_set_current(void)
465 struct eth_device* old_current;
467 if (!eth_current) /* XXX no current */
470 act = getenv("ethact");
472 old_current = eth_current;
474 if (strcmp(eth_current->name, act) == 0)
476 eth_current = eth_current->next;
477 } while (old_current != eth_current);
480 setenv("ethact", eth_current->name);
484 char *eth_get_name (void)
486 return (eth_current ? eth_current->name : "unknown");
488 #elif defined(CONFIG_CMD_NET) && !defined(CONFIG_NET_MULTI)
490 extern int at91rm9200_miiphy_initialize(bd_t *bis);
491 extern int emac4xx_miiphy_initialize(bd_t *bis);
492 extern int mcf52x2_miiphy_initialize(bd_t *bis);
493 extern int ns7520_miiphy_initialize(bd_t *bis);
494 extern int davinci_eth_miiphy_initialize(bd_t *bis);
497 int eth_initialize(bd_t *bis)
499 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
503 #if defined(CONFIG_AT91RM9200)
504 at91rm9200_miiphy_initialize(bis);
506 #if defined(CONFIG_PPC4xx_EMAC)
507 emac4xx_miiphy_initialize(bis);
509 #if defined(CONFIG_MCF52x2)
510 mcf52x2_miiphy_initialize(bis);
512 #if defined(CONFIG_DRIVER_NS7520_ETHERNET)
513 ns7520_miiphy_initialize(bis);
515 #if defined(CONFIG_DRIVER_TI_EMAC)
516 davinci_eth_miiphy_initialize(bis);