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(int index, uchar *enetaddr)
60 sprintf(enetvar, index ? "eth%daddr" : "ethaddr", index);
61 return eth_getenv_enetaddr(enetvar, enetaddr);
64 #ifdef CONFIG_NET_MULTI
66 static int eth_mac_skip(int index)
70 sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
71 return ((skip_state = getenv(enetvar)) != NULL);
75 * CPU and board-specific Ethernet initializations. Aliased function
76 * signals caller to move on
78 static int __def_eth_init(bd_t *bis)
82 int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
83 int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
85 extern int mv6436x_eth_initialize(bd_t *);
86 extern int mv6446x_eth_initialize(bd_t *);
89 extern void (*push_packet)(volatile void *, int);
94 } eth_rcv_bufs[PKTBUFSRX];
96 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
99 static struct eth_device *eth_devices, *eth_current;
101 struct eth_device *eth_get_dev(void)
106 struct eth_device *eth_get_dev_by_name(const char *devname)
108 struct eth_device *dev, *target_dev;
116 if (strcmp(devname, dev->name) == 0) {
121 } while (dev != eth_devices);
126 struct eth_device *eth_get_dev_by_index(int index)
128 struct eth_device *dev, *target_dev;
143 } while (dev != eth_devices);
148 int eth_get_dev_index (void)
150 struct eth_device *dev;
157 for (dev = eth_devices; dev; dev = dev->next) {
158 if (dev == eth_current)
170 static void eth_current_changed(void)
172 #ifdef CONFIG_NET_MULTI
174 char *act = getenv("ethact");
175 /* update current ethernet name */
178 if (act == NULL || strcmp(act, eth_current->name) != 0)
179 setenv("ethact", eth_current->name);
182 * remove the variable completely if there is no active
185 else if (act != NULL)
186 setenv("ethact", NULL);
191 int eth_register(struct eth_device *dev)
193 struct eth_device *d;
195 eth_current = eth_devices = dev;
196 eth_current_changed();
198 for (d=eth_devices; d->next!=eth_devices; d=d->next)
203 dev->state = ETH_STATE_INIT;
204 dev->next = eth_devices;
209 int eth_initialize(bd_t *bis)
211 unsigned char env_enetaddr[6];
217 show_boot_progress (64);
218 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
227 * If board-specific initialization exists, call it.
228 * If not, call a CPU-specific one
230 if (board_eth_init != __def_eth_init) {
231 if (board_eth_init(bis) < 0)
232 printf("Board Net Initialization Failed\n");
233 } else if (cpu_eth_init != __def_eth_init) {
234 if (cpu_eth_init(bis) < 0)
235 printf("CPU Net Initialization Failed\n");
237 printf("Net Initialization Skipped\n");
239 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
240 mv6436x_eth_initialize(bis);
242 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
243 mv6446x_eth_initialize(bis);
246 puts ("No ethernet found.\n");
247 show_boot_progress (-64);
249 struct eth_device *dev = eth_devices;
250 char *ethprime = getenv ("ethprime");
252 show_boot_progress (65);
257 printf("%s", dev->name);
259 if (ethprime && strcmp (dev->name, ethprime) == 0) {
264 if (strchr(dev->name, ' '))
265 puts("\nWarning: eth device name has a space!\n");
267 eth_getenv_enetaddr_by_index(eth_number, env_enetaddr);
269 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
270 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
271 memcmp(dev->enetaddr, env_enetaddr, 6))
273 printf ("\nWarning: %s MAC addresses don't match:\n",
275 printf ("Address in SROM is %pM\n",
277 printf ("Address in environment is %pM\n",
281 memcpy(dev->enetaddr, env_enetaddr, 6);
283 if (dev->write_hwaddr &&
284 !eth_mac_skip(eth_number) &&
285 is_valid_ether_addr(dev->enetaddr)) {
286 dev->write_hwaddr(dev);
291 } while(dev != eth_devices);
293 eth_current_changed();
300 #ifdef CONFIG_MCAST_TFTP
302 * mcast_addr: multicast ipaddr from which multicast Mac is made
303 * join: 1=join, 0=leave.
305 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
308 if (!eth_current || !eth_current->mcast)
310 mcast_mac[5] = htonl(mcast_ip) & 0xff;
311 mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
312 mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
316 return eth_current->mcast(eth_current, mcast_mac, join);
319 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
320 * and this is the ethernet-crc method needed for TSEC -- and perhaps
321 * some other adapter -- hash tables
323 #define CRCPOLY_LE 0xedb88320
324 u32 ether_crc (size_t len, unsigned char const *p)
331 for (i = 0; i < 8; i++)
332 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
334 /* an reverse the bits, cuz of way they arrive -- last-first */
335 crc = (crc >> 16) | (crc << 16);
336 crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
337 crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
338 crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
339 crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
346 int eth_init(bd_t *bis)
349 struct eth_device *old_current, *dev;
352 puts ("No ethernet found.\n");
356 /* Sync environment with network devices */
360 uchar env_enetaddr[6];
362 if (eth_getenv_enetaddr_by_index(eth_number, env_enetaddr))
363 memcpy(dev->enetaddr, env_enetaddr, 6);
367 } while (dev != eth_devices);
369 old_current = eth_current;
371 debug("Trying %s\n", eth_current->name);
373 if (eth_current->init(eth_current,bis) >= 0) {
374 eth_current->state = ETH_STATE_ACTIVE;
381 } while (old_current != eth_current);
391 eth_current->halt(eth_current);
393 eth_current->state = ETH_STATE_PASSIVE;
396 int eth_send(volatile void *packet, int length)
401 return eth_current->send(eth_current, packet, length);
409 return eth_current->recv(eth_current);
413 static void eth_save_packet(volatile void *packet, int length)
415 volatile char *p = packet;
418 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
421 if (PKTSIZE < length)
424 for (i = 0; i < length; i++)
425 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
427 eth_rcv_bufs[eth_rcv_last].length = length;
428 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
431 int eth_receive(volatile void *packet, int length)
433 volatile char *p = packet;
434 void *pp = push_packet;
437 if (eth_rcv_current == eth_rcv_last) {
438 push_packet = eth_save_packet;
442 if (eth_rcv_current == eth_rcv_last)
446 if (length < eth_rcv_bufs[eth_rcv_current].length)
449 length = eth_rcv_bufs[eth_rcv_current].length;
451 for (i = 0; i < length; i++)
452 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
454 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
457 #endif /* CONFIG_API */
459 void eth_try_another(int first_restart)
461 static struct eth_device *first_failed = NULL;
465 * Do not rotate between network interfaces when
466 * 'ethrotate' variable is set to 'no'.
468 if (((ethrotate = getenv ("ethrotate")) != NULL) &&
469 (strcmp(ethrotate, "no") == 0))
476 first_failed = eth_current;
479 eth_current = eth_current->next;
481 eth_current_changed();
483 if (first_failed == eth_current) {
488 void eth_set_current(void)
490 static char *act = NULL;
491 static int env_changed_id = 0;
492 struct eth_device* old_current;
495 if (!eth_current) /* XXX no current */
498 env_id = get_env_id();
499 if ((act == NULL) || (env_changed_id != env_id)) {
500 act = getenv("ethact");
501 env_changed_id = env_id;
504 old_current = eth_current;
506 if (strcmp(eth_current->name, act) == 0)
508 eth_current = eth_current->next;
509 } while (old_current != eth_current);
512 eth_current_changed();
515 char *eth_get_name (void)
517 return (eth_current ? eth_current->name : "unknown");
520 #else /* !CONFIG_NET_MULTI */
522 #warning Ethernet driver is deprecated. Please update to use CONFIG_NET_MULTI
524 extern int mcf52x2_miiphy_initialize(bd_t *bis);
525 extern int ns7520_miiphy_initialize(bd_t *bis);
528 int eth_initialize(bd_t *bis)
530 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
534 #if defined(CONFIG_MCF52x2)
535 mcf52x2_miiphy_initialize(bis);
537 #if defined(CONFIG_DRIVER_NS7520_ETHERNET)
538 ns7520_miiphy_initialize(bis);