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
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)
181 dev->state = ETH_STATE_INIT;
182 dev->next = eth_devices;
187 int eth_initialize(bd_t *bis)
189 unsigned char env_enetaddr[6];
195 show_boot_progress (64);
196 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
199 /* Try board-specific initialization first. If it fails or isn't
200 * present, try the cpu-specific initialization */
201 if (board_eth_init(bis) < 0)
204 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
205 mv6436x_eth_initialize(bis);
207 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
208 mv6446x_eth_initialize(bis);
211 puts ("No ethernet found.\n");
212 show_boot_progress (-64);
214 struct eth_device *dev = eth_devices;
215 char *ethprime = getenv ("ethprime");
217 show_boot_progress (65);
222 printf("%s", dev->name);
224 if (ethprime && strcmp (dev->name, ethprime) == 0) {
229 eth_getenv_enetaddr_by_index(eth_number, env_enetaddr);
231 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
232 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
233 memcmp(dev->enetaddr, env_enetaddr, 6))
235 printf ("\nWarning: %s MAC addresses don't match:\n",
237 printf ("Address in SROM is %pM\n",
239 printf ("Address in environment is %pM\n",
243 memcpy(dev->enetaddr, env_enetaddr, 6);
248 } while(dev != eth_devices);
250 #ifdef CONFIG_NET_MULTI
251 /* update current ethernet name */
253 char *act = getenv("ethact");
254 if (act == NULL || strcmp(act, eth_current->name) != 0)
255 setenv("ethact", eth_current->name);
257 setenv("ethact", NULL);
266 #ifdef CONFIG_MCAST_TFTP
268 * mcast_addr: multicast ipaddr from which multicast Mac is made
269 * join: 1=join, 0=leave.
271 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
274 if (!eth_current || !eth_current->mcast)
276 mcast_mac[5] = htonl(mcast_ip) & 0xff;
277 mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
278 mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
282 return eth_current->mcast(eth_current, mcast_mac, join);
285 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
286 * and this is the ethernet-crc method needed for TSEC -- and perhaps
287 * some other adapter -- hash tables
289 #define CRCPOLY_LE 0xedb88320
290 u32 ether_crc (size_t len, unsigned char const *p)
297 for (i = 0; i < 8; i++)
298 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
300 /* an reverse the bits, cuz of way they arrive -- last-first */
301 crc = (crc >> 16) | (crc << 16);
302 crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
303 crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
304 crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
305 crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
312 int eth_init(bd_t *bis)
315 struct eth_device *old_current, *dev;
318 puts ("No ethernet found.\n");
322 /* Sync environment with network devices */
326 uchar env_enetaddr[6];
328 if (eth_getenv_enetaddr_by_index(eth_number, env_enetaddr))
329 memcpy(dev->enetaddr, env_enetaddr, 6);
333 } while (dev != eth_devices);
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)
464 static char *act = NULL;
465 static int env_changed_id = 0;
466 struct eth_device* old_current;
469 if (!eth_current) /* XXX no current */
472 env_id = get_env_id();
473 if ((act == NULL) || (env_changed_id != env_id)) {
474 act = getenv("ethact");
475 env_changed_id = env_id;
478 old_current = eth_current;
480 if (strcmp(eth_current->name, act) == 0)
482 eth_current = eth_current->next;
483 } while (old_current != eth_current);
486 setenv("ethact", eth_current->name);
490 char *eth_get_name (void)
492 return (eth_current ? eth_current->name : "unknown");
495 #else /* !CONFIG_NET_MULTI */
497 #warning Ethernet driver is deprecated. Please update to use CONFIG_NET_MULTI
499 extern int at91rm9200_miiphy_initialize(bd_t *bis);
500 extern int mcf52x2_miiphy_initialize(bd_t *bis);
501 extern int ns7520_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_MCF52x2)
514 mcf52x2_miiphy_initialize(bis);
516 #if defined(CONFIG_DRIVER_NS7520_ETHERNET)
517 ns7520_miiphy_initialize(bis);