2 * (C) Copyright 2001-2004
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
66 * CPU and board-specific Ethernet initializations. Aliased function
67 * signals caller to move on
69 static int __def_eth_init(bd_t *bis)
73 int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
74 int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
76 extern int mv6436x_eth_initialize(bd_t *);
77 extern int mv6446x_eth_initialize(bd_t *);
80 extern void (*push_packet)(volatile void *, int);
85 } eth_rcv_bufs[PKTBUFSRX];
87 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
90 static struct eth_device *eth_devices, *eth_current;
92 struct eth_device *eth_get_dev(void)
97 struct eth_device *eth_get_dev_by_name(char *devname)
99 struct eth_device *dev, *target_dev;
107 if (strcmp(devname, dev->name) == 0) {
112 } while (dev != eth_devices);
117 struct eth_device *eth_get_dev_by_index(int index)
119 struct eth_device *dev, *target_dev;
134 } while (dev != eth_devices);
139 int eth_get_dev_index (void)
141 struct eth_device *dev;
148 for (dev = eth_devices; dev; dev = dev->next) {
149 if (dev == eth_current)
161 int eth_register(struct eth_device* dev)
163 struct eth_device *d;
166 eth_current = eth_devices = dev;
167 #ifdef CONFIG_NET_MULTI
168 /* update current ethernet name */
170 char *act = getenv("ethact");
171 if (act == NULL || strcmp(act, eth_current->name) != 0)
172 setenv("ethact", eth_current->name);
176 for (d=eth_devices; d->next!=eth_devices; d=d->next);
180 dev->state = ETH_STATE_INIT;
181 dev->next = eth_devices;
186 int eth_initialize(bd_t *bis)
188 unsigned char env_enetaddr[6];
194 show_boot_progress (64);
195 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
198 /* Try board-specific initialization first. If it fails or isn't
199 * present, try the cpu-specific initialization */
200 if (board_eth_init(bis) < 0)
203 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
204 mv6436x_eth_initialize(bis);
206 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
207 mv6446x_eth_initialize(bis);
210 puts ("No ethernet found.\n");
211 show_boot_progress (-64);
213 struct eth_device *dev = eth_devices;
214 char *ethprime = getenv ("ethprime");
216 show_boot_progress (65);
221 printf("%s", dev->name);
223 if (ethprime && strcmp (dev->name, ethprime) == 0) {
228 eth_getenv_enetaddr_by_index(eth_number, env_enetaddr);
230 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
231 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
232 memcmp(dev->enetaddr, env_enetaddr, 6))
234 printf ("\nWarning: %s MAC addresses don't match:\n",
236 printf ("Address in SROM is %pM\n",
238 printf ("Address in environment is %pM\n",
242 memcpy(dev->enetaddr, env_enetaddr, 6);
247 } while(dev != eth_devices);
249 #ifdef CONFIG_NET_MULTI
250 /* update current ethernet name */
252 char *act = getenv("ethact");
253 if (act == NULL || strcmp(act, eth_current->name) != 0)
254 setenv("ethact", eth_current->name);
256 setenv("ethact", NULL);
265 #ifdef CONFIG_MCAST_TFTP
267 * mcast_addr: multicast ipaddr from which multicast Mac is made
268 * join: 1=join, 0=leave.
270 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
273 if (!eth_current || !eth_current->mcast)
275 mcast_mac[5] = htonl(mcast_ip) & 0xff;
276 mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
277 mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
281 return eth_current->mcast(eth_current, mcast_mac, join);
284 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
285 * and this is the ethernet-crc method needed for TSEC -- and perhaps
286 * some other adapter -- hash tables
288 #define CRCPOLY_LE 0xedb88320
289 u32 ether_crc (size_t len, unsigned char const *p)
296 for (i = 0; i < 8; i++)
297 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
299 /* an reverse the bits, cuz of way they arrive -- last-first */
300 crc = (crc >> 16) | (crc << 16);
301 crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
302 crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
303 crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
304 crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
311 int eth_init(bd_t *bis)
314 struct eth_device *old_current, *dev;
317 puts ("No ethernet found.\n");
321 /* Sync environment with network devices */
325 uchar env_enetaddr[6];
327 if (eth_getenv_enetaddr_by_index(eth_number, env_enetaddr))
328 memcpy(dev->enetaddr, env_enetaddr, 6);
332 } while (dev != eth_devices);
334 old_current = eth_current;
336 debug("Trying %s\n", eth_current->name);
338 if (eth_current->init(eth_current,bis) >= 0) {
339 eth_current->state = ETH_STATE_ACTIVE;
346 } while (old_current != eth_current);
356 eth_current->halt(eth_current);
358 eth_current->state = ETH_STATE_PASSIVE;
361 int eth_send(volatile void *packet, int length)
366 return eth_current->send(eth_current, packet, length);
374 return eth_current->recv(eth_current);
378 static void eth_save_packet(volatile void *packet, int length)
380 volatile char *p = packet;
383 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
386 if (PKTSIZE < length)
389 for (i = 0; i < length; i++)
390 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
392 eth_rcv_bufs[eth_rcv_last].length = length;
393 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
396 int eth_receive(volatile void *packet, int length)
398 volatile char *p = packet;
399 void *pp = push_packet;
402 if (eth_rcv_current == eth_rcv_last) {
403 push_packet = eth_save_packet;
407 if (eth_rcv_current == eth_rcv_last)
411 if (length < eth_rcv_bufs[eth_rcv_current].length)
414 length = eth_rcv_bufs[eth_rcv_current].length;
416 for (i = 0; i < length; i++)
417 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
419 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
422 #endif /* CONFIG_API */
424 void eth_try_another(int first_restart)
426 static struct eth_device *first_failed = NULL;
430 * Do not rotate between network interfaces when
431 * 'ethrotate' variable is set to 'no'.
433 if (((ethrotate = getenv ("ethrotate")) != NULL) &&
434 (strcmp(ethrotate, "no") == 0))
441 first_failed = eth_current;
444 eth_current = eth_current->next;
446 #ifdef CONFIG_NET_MULTI
447 /* update current ethernet name */
449 char *act = getenv("ethact");
450 if (act == NULL || strcmp(act, eth_current->name) != 0)
451 setenv("ethact", eth_current->name);
455 if (first_failed == eth_current) {
460 #ifdef CONFIG_NET_MULTI
461 void eth_set_current(void)
463 static char *act = NULL;
464 static int env_changed_id = 0;
465 struct eth_device* old_current;
468 if (!eth_current) /* XXX no current */
471 env_id = get_env_id();
472 if ((act == NULL) || (env_changed_id != env_id)) {
473 act = getenv("ethact");
474 env_changed_id = env_id;
477 old_current = eth_current;
479 if (strcmp(eth_current->name, act) == 0)
481 eth_current = eth_current->next;
482 } while (old_current != eth_current);
485 setenv("ethact", eth_current->name);
489 char *eth_get_name (void)
491 return (eth_current ? eth_current->name : "unknown");
494 #else /* !CONFIG_NET_MULTI */
496 #warning Ethernet driver is deprecated. Please update to use CONFIG_NET_MULTI
498 extern int at91rm9200_miiphy_initialize(bd_t *bis);
499 extern int mcf52x2_miiphy_initialize(bd_t *bis);
500 extern int ns7520_miiphy_initialize(bd_t *bis);
503 int eth_initialize(bd_t *bis)
505 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
509 #if defined(CONFIG_AT91RM9200)
510 at91rm9200_miiphy_initialize(bis);
512 #if defined(CONFIG_MCF52x2)
513 mcf52x2_miiphy_initialize(bis);
515 #if defined(CONFIG_DRIVER_NS7520_ETHERNET)
516 ns7520_miiphy_initialize(bis);