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,
30 void eth_parse_enetaddr(const char *addr, uchar *enetaddr)
35 for (i = 0; i < 6; ++i) {
36 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
38 addr = (*end) ? end + 1 : end;
42 int eth_getenv_enetaddr(char *name, uchar *enetaddr)
44 eth_parse_enetaddr(getenv(name), enetaddr);
45 return is_valid_ether_addr(enetaddr);
48 int eth_setenv_enetaddr(char *name, const uchar *enetaddr)
52 sprintf(buf, "%pM", enetaddr);
54 return setenv(name, buf);
57 int eth_getenv_enetaddr_by_index(const char *base_name, int index,
61 sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
62 return eth_getenv_enetaddr(enetvar, enetaddr);
65 #ifdef CONFIG_NET_MULTI
67 static int eth_mac_skip(int index)
71 sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
72 return ((skip_state = getenv(enetvar)) != NULL);
76 * CPU and board-specific Ethernet initializations. Aliased function
77 * signals caller to move on
79 static int __def_eth_init(bd_t *bis)
83 int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
84 int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
86 extern int mv6436x_eth_initialize(bd_t *);
87 extern int mv6446x_eth_initialize(bd_t *);
90 extern void (*push_packet)(volatile void *, int);
95 } eth_rcv_bufs[PKTBUFSRX];
97 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
100 static struct eth_device *eth_devices, *eth_current;
102 struct eth_device *eth_get_dev(void)
107 struct eth_device *eth_get_dev_by_name(const char *devname)
109 struct eth_device *dev, *target_dev;
117 if (strcmp(devname, dev->name) == 0) {
122 } while (dev != eth_devices);
127 struct eth_device *eth_get_dev_by_index(int index)
129 struct eth_device *dev, *target_dev;
144 } while (dev != eth_devices);
149 int eth_get_dev_index (void)
151 struct eth_device *dev;
158 for (dev = eth_devices; dev; dev = dev->next) {
159 if (dev == eth_current)
171 static void eth_current_changed(void)
173 #ifdef CONFIG_NET_MULTI
175 char *act = getenv("ethact");
176 /* update current ethernet name */
179 if (act == NULL || strcmp(act, eth_current->name) != 0)
180 setenv("ethact", eth_current->name);
183 * remove the variable completely if there is no active
186 else if (act != NULL)
187 setenv("ethact", NULL);
192 int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
195 unsigned char env_enetaddr[6];
198 if (!eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr))
201 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
202 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
203 memcmp(dev->enetaddr, env_enetaddr, 6)) {
204 printf("\nWarning: %s MAC addresses don't match:\n",
206 printf("Address in SROM is %pM\n",
208 printf("Address in environment is %pM\n",
212 memcpy(dev->enetaddr, env_enetaddr, 6);
215 if (dev->write_hwaddr &&
216 !eth_mac_skip(eth_number) &&
217 is_valid_ether_addr(dev->enetaddr)) {
218 ret = dev->write_hwaddr(dev);
224 int eth_register(struct eth_device *dev)
226 struct eth_device *d;
228 eth_current = eth_devices = dev;
229 eth_current_changed();
231 for (d=eth_devices; d->next!=eth_devices; d=d->next)
236 dev->state = ETH_STATE_INIT;
237 dev->next = eth_devices;
242 int eth_initialize(bd_t *bis)
249 show_boot_progress (64);
250 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
259 * If board-specific initialization exists, call it.
260 * If not, call a CPU-specific one
262 if (board_eth_init != __def_eth_init) {
263 if (board_eth_init(bis) < 0)
264 printf("Board Net Initialization Failed\n");
265 } else if (cpu_eth_init != __def_eth_init) {
266 if (cpu_eth_init(bis) < 0)
267 printf("CPU Net Initialization Failed\n");
269 printf("Net Initialization Skipped\n");
271 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
272 mv6436x_eth_initialize(bis);
274 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
275 mv6446x_eth_initialize(bis);
278 puts ("No ethernet found.\n");
279 show_boot_progress (-64);
281 struct eth_device *dev = eth_devices;
282 char *ethprime = getenv ("ethprime");
284 show_boot_progress (65);
289 printf("%s", dev->name);
291 if (ethprime && strcmp (dev->name, ethprime) == 0) {
296 if (strchr(dev->name, ' '))
297 puts("\nWarning: eth device name has a space!\n");
299 if (eth_write_hwaddr(dev, NULL, eth_number))
300 puts("Warning: failed to set MAC address\n");
304 } while(dev != eth_devices);
306 eth_current_changed();
313 #ifdef CONFIG_MCAST_TFTP
315 * mcast_addr: multicast ipaddr from which multicast Mac is made
316 * join: 1=join, 0=leave.
318 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
321 if (!eth_current || !eth_current->mcast)
323 mcast_mac[5] = htonl(mcast_ip) & 0xff;
324 mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
325 mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
329 return eth_current->mcast(eth_current, mcast_mac, join);
332 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
333 * and this is the ethernet-crc method needed for TSEC -- and perhaps
334 * some other adapter -- hash tables
336 #define CRCPOLY_LE 0xedb88320
337 u32 ether_crc (size_t len, unsigned char const *p)
344 for (i = 0; i < 8; i++)
345 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
347 /* an reverse the bits, cuz of way they arrive -- last-first */
348 crc = (crc >> 16) | (crc << 16);
349 crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
350 crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
351 crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
352 crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
359 int eth_init(bd_t *bis)
362 struct eth_device *old_current, *dev;
365 puts ("No ethernet found.\n");
369 /* Sync environment with network devices */
373 uchar env_enetaddr[6];
375 if (eth_getenv_enetaddr_by_index("eth", eth_number,
377 memcpy(dev->enetaddr, env_enetaddr, 6);
381 } while (dev != eth_devices);
383 old_current = eth_current;
385 debug("Trying %s\n", eth_current->name);
387 if (eth_current->init(eth_current,bis) >= 0) {
388 eth_current->state = ETH_STATE_ACTIVE;
395 } while (old_current != eth_current);
405 eth_current->halt(eth_current);
407 eth_current->state = ETH_STATE_PASSIVE;
410 int eth_send(volatile void *packet, int length)
415 return eth_current->send(eth_current, packet, length);
423 return eth_current->recv(eth_current);
427 static void eth_save_packet(volatile void *packet, int length)
429 volatile char *p = packet;
432 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
435 if (PKTSIZE < length)
438 for (i = 0; i < length; i++)
439 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
441 eth_rcv_bufs[eth_rcv_last].length = length;
442 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
445 int eth_receive(volatile void *packet, int length)
447 volatile char *p = packet;
448 void *pp = push_packet;
451 if (eth_rcv_current == eth_rcv_last) {
452 push_packet = eth_save_packet;
456 if (eth_rcv_current == eth_rcv_last)
460 if (length < eth_rcv_bufs[eth_rcv_current].length)
463 length = eth_rcv_bufs[eth_rcv_current].length;
465 for (i = 0; i < length; i++)
466 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
468 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
471 #endif /* CONFIG_API */
473 void eth_try_another(int first_restart)
475 static struct eth_device *first_failed = NULL;
479 * Do not rotate between network interfaces when
480 * 'ethrotate' variable is set to 'no'.
482 if (((ethrotate = getenv ("ethrotate")) != NULL) &&
483 (strcmp(ethrotate, "no") == 0))
490 first_failed = eth_current;
493 eth_current = eth_current->next;
495 eth_current_changed();
497 if (first_failed == eth_current) {
502 void eth_set_current(void)
504 static char *act = NULL;
505 static int env_changed_id = 0;
506 struct eth_device* old_current;
509 if (!eth_current) /* XXX no current */
512 env_id = get_env_id();
513 if ((act == NULL) || (env_changed_id != env_id)) {
514 act = getenv("ethact");
515 env_changed_id = env_id;
518 old_current = eth_current;
520 if (strcmp(eth_current->name, act) == 0)
522 eth_current = eth_current->next;
523 } while (old_current != eth_current);
526 eth_current_changed();
529 char *eth_get_name (void)
531 return (eth_current ? eth_current->name : "unknown");
534 #else /* !CONFIG_NET_MULTI */
536 #warning Ethernet driver is deprecated. Please update to use CONFIG_NET_MULTI
538 extern int mcf52x2_miiphy_initialize(bd_t *bis);
539 extern int ns7520_miiphy_initialize(bd_t *bis);
542 int eth_initialize(bd_t *bis)
544 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
548 #if defined(CONFIG_MCF52x2)
549 mcf52x2_miiphy_initialize(bis);
551 #if defined(CONFIG_DRIVER_NS7520_ETHERNET)
552 ns7520_miiphy_initialize(bis);