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,
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);
58 #if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
61 * CPU and board-specific Ethernet initializations. Aliased function
62 * signals caller to move on
64 static int __def_eth_init(bd_t *bis)
68 int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
69 int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
71 extern int mv6436x_eth_initialize(bd_t *);
72 extern int mv6446x_eth_initialize(bd_t *);
75 extern void (*push_packet)(volatile void *, int);
80 } eth_rcv_bufs[PKTBUFSRX];
82 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
85 static struct eth_device *eth_devices, *eth_current;
87 struct eth_device *eth_get_dev(void)
92 struct eth_device *eth_get_dev_by_name(char *devname)
94 struct eth_device *dev, *target_dev;
102 if (strcmp(devname, dev->name) == 0) {
107 } while (dev != eth_devices);
112 struct eth_device *eth_get_dev_by_index(int index)
114 struct eth_device *dev, *target_dev;
129 } while (dev != eth_devices);
134 int eth_get_dev_index (void)
136 struct eth_device *dev;
143 for (dev = eth_devices; dev; dev = dev->next) {
144 if (dev == eth_current)
156 int eth_register(struct eth_device* dev)
158 struct eth_device *d;
161 eth_current = eth_devices = dev;
162 #ifdef CONFIG_NET_MULTI
163 /* update current ethernet name */
165 char *act = getenv("ethact");
166 if (act == NULL || strcmp(act, eth_current->name) != 0)
167 setenv("ethact", eth_current->name);
171 for (d=eth_devices; d->next!=eth_devices; d=d->next);
175 dev->state = ETH_STATE_INIT;
176 dev->next = eth_devices;
181 int eth_initialize(bd_t *bis)
184 unsigned char env_enetaddr[6];
190 show_boot_progress (64);
191 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
194 /* Try board-specific initialization first. If it fails or isn't
195 * present, try the cpu-specific initialization */
196 if (board_eth_init(bis) < 0)
199 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
200 mv6436x_eth_initialize(bis);
202 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
203 mv6446x_eth_initialize(bis);
206 puts ("No ethernet found.\n");
207 show_boot_progress (-64);
209 struct eth_device *dev = eth_devices;
210 char *ethprime = getenv ("ethprime");
212 show_boot_progress (65);
217 printf("%s", dev->name);
219 if (ethprime && strcmp (dev->name, ethprime) == 0) {
224 sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
225 eth_getenv_enetaddr(enetvar, env_enetaddr);
227 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
228 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
229 memcmp(dev->enetaddr, env_enetaddr, 6))
231 printf ("\nWarning: %s MAC addresses don't match:\n",
233 printf ("Address in SROM is %pM\n",
235 printf ("Address in environment is %pM\n",
239 memcpy(dev->enetaddr, env_enetaddr, 6);
244 } while(dev != eth_devices);
246 #ifdef CONFIG_NET_MULTI
247 /* update current ethernet name */
249 char *act = getenv("ethact");
250 if (act == NULL || strcmp(act, eth_current->name) != 0)
251 setenv("ethact", eth_current->name);
253 setenv("ethact", NULL);
262 void eth_set_enetaddr(int num, char *addr) {
263 struct eth_device *dev;
264 unsigned char enetaddr[6];
266 debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
271 eth_parse_enetaddr(addr, enetaddr);
277 if (dev == eth_devices)
281 debug ( "Setting new HW address on %s\n"
282 "New Address is %pM\n",
283 dev->name, enetaddr);
285 memcpy(dev->enetaddr, enetaddr, 6);
287 #ifdef CONFIG_MCAST_TFTP
289 * mcast_addr: multicast ipaddr from which multicast Mac is made
290 * join: 1=join, 0=leave.
292 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
295 if (!eth_current || !eth_current->mcast)
297 mcast_mac[5] = htonl(mcast_ip) & 0xff;
298 mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
299 mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
303 return eth_current->mcast(eth_current, mcast_mac, join);
306 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
307 * and this is the ethernet-crc method needed for TSEC -- and perhaps
308 * some other adapter -- hash tables
310 #define CRCPOLY_LE 0xedb88320
311 u32 ether_crc (size_t len, unsigned char const *p)
318 for (i = 0; i < 8; i++)
319 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
321 /* an reverse the bits, cuz of way they arrive -- last-first */
322 crc = (crc >> 16) | (crc << 16);
323 crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
324 crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
325 crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
326 crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
333 int eth_init(bd_t *bis)
335 struct eth_device* old_current;
338 puts ("No ethernet found.\n");
342 old_current = eth_current;
344 debug ("Trying %s\n", eth_current->name);
346 if (eth_current->init(eth_current,bis) >= 0) {
347 eth_current->state = ETH_STATE_ACTIVE;
354 } while (old_current != eth_current);
364 eth_current->halt(eth_current);
366 eth_current->state = ETH_STATE_PASSIVE;
369 int eth_send(volatile void *packet, int length)
374 return eth_current->send(eth_current, packet, length);
382 return eth_current->recv(eth_current);
386 static void eth_save_packet(volatile void *packet, int length)
388 volatile char *p = packet;
391 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
394 if (PKTSIZE < length)
397 for (i = 0; i < length; i++)
398 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
400 eth_rcv_bufs[eth_rcv_last].length = length;
401 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
404 int eth_receive(volatile void *packet, int length)
406 volatile char *p = packet;
407 void *pp = push_packet;
410 if (eth_rcv_current == eth_rcv_last) {
411 push_packet = eth_save_packet;
415 if (eth_rcv_current == eth_rcv_last)
419 if (length < eth_rcv_bufs[eth_rcv_current].length)
422 length = eth_rcv_bufs[eth_rcv_current].length;
424 for (i = 0; i < length; i++)
425 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
427 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
430 #endif /* CONFIG_API */
432 void eth_try_another(int first_restart)
434 static struct eth_device *first_failed = NULL;
438 * Do not rotate between network interfaces when
439 * 'ethrotate' variable is set to 'no'.
441 if (((ethrotate = getenv ("ethrotate")) != NULL) &&
442 (strcmp(ethrotate, "no") == 0))
449 first_failed = eth_current;
452 eth_current = eth_current->next;
454 #ifdef CONFIG_NET_MULTI
455 /* update current ethernet name */
457 char *act = getenv("ethact");
458 if (act == NULL || strcmp(act, eth_current->name) != 0)
459 setenv("ethact", eth_current->name);
463 if (first_failed == eth_current) {
468 #ifdef CONFIG_NET_MULTI
469 void eth_set_current(void)
471 static char *act = NULL;
472 static int env_changed_id = 0;
473 struct eth_device* old_current;
476 if (!eth_current) /* XXX no current */
479 env_id = get_env_id();
480 if ((act == NULL) || (env_changed_id != env_id)) {
481 act = getenv("ethact");
482 env_changed_id = env_id;
485 old_current = eth_current;
487 if (strcmp(eth_current->name, act) == 0)
489 eth_current = eth_current->next;
490 } while (old_current != eth_current);
493 setenv("ethact", eth_current->name);
497 char *eth_get_name (void)
499 return (eth_current ? eth_current->name : "unknown");
501 #elif defined(CONFIG_CMD_NET) && !defined(CONFIG_NET_MULTI)
503 extern int at91rm9200_miiphy_initialize(bd_t *bis);
504 extern int emac4xx_miiphy_initialize(bd_t *bis);
505 extern int mcf52x2_miiphy_initialize(bd_t *bis);
506 extern int ns7520_miiphy_initialize(bd_t *bis);
507 extern int davinci_eth_miiphy_initialize(bd_t *bis);
510 int eth_initialize(bd_t *bis)
512 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
516 #if defined(CONFIG_AT91RM9200)
517 at91rm9200_miiphy_initialize(bis);
519 #if defined(CONFIG_PPC4xx_EMAC)
520 emac4xx_miiphy_initialize(bis);
522 #if defined(CONFIG_MCF52x2)
523 mcf52x2_miiphy_initialize(bis);
525 #if defined(CONFIG_DRIVER_NS7520_ETHERNET)
526 ns7520_miiphy_initialize(bis);
528 #if defined(CONFIG_DRIVER_TI_EMAC)
529 davinci_eth_miiphy_initialize(bis);