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
65 static int eth_mac_skip(int index)
69 sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
70 return ((skip_state = getenv(enetvar)) != NULL);
74 * CPU and board-specific Ethernet initializations. Aliased function
75 * signals caller to move on
77 static int __def_eth_init(bd_t *bis)
81 int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
82 int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
84 extern int mv6436x_eth_initialize(bd_t *);
85 extern int mv6446x_eth_initialize(bd_t *);
88 extern void (*push_packet)(volatile void *, int);
93 } eth_rcv_bufs[PKTBUFSRX];
95 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
98 static struct eth_device *eth_devices, *eth_current;
100 struct eth_device *eth_get_dev(void)
105 struct eth_device *eth_get_dev_by_name(const char *devname)
107 struct eth_device *dev, *target_dev;
115 if (strcmp(devname, dev->name) == 0) {
120 } while (dev != eth_devices);
125 struct eth_device *eth_get_dev_by_index(int index)
127 struct eth_device *dev, *target_dev;
142 } while (dev != eth_devices);
147 int eth_get_dev_index (void)
149 struct eth_device *dev;
156 for (dev = eth_devices; dev; dev = dev->next) {
157 if (dev == eth_current)
169 int eth_register(struct eth_device* dev)
171 struct eth_device *d;
174 eth_current = eth_devices = dev;
175 #ifdef CONFIG_NET_MULTI
176 /* update current ethernet name */
178 char *act = getenv("ethact");
179 if (act == NULL || strcmp(act, eth_current->name) != 0)
180 setenv("ethact", eth_current->name);
184 for (d=eth_devices; d->next!=eth_devices; d=d->next)
189 dev->state = ETH_STATE_INIT;
190 dev->next = eth_devices;
195 int eth_initialize(bd_t *bis)
197 unsigned char env_enetaddr[6];
203 show_boot_progress (64);
204 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
208 * If board-specific initialization exists, call it.
209 * If not, call a CPU-specific one
211 if (board_eth_init != __def_eth_init) {
212 if (board_eth_init(bis) < 0)
213 printf("Board Net Initialization Failed\n");
214 } else if (cpu_eth_init != __def_eth_init) {
215 if (cpu_eth_init(bis) < 0)
216 printf("CPU Net Initialization Failed\n");
218 printf("Net Initialization Skipped\n");
220 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
221 mv6436x_eth_initialize(bis);
223 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
224 mv6446x_eth_initialize(bis);
227 puts ("No ethernet found.\n");
228 show_boot_progress (-64);
230 struct eth_device *dev = eth_devices;
231 char *ethprime = getenv ("ethprime");
233 show_boot_progress (65);
238 printf("%s", dev->name);
240 if (ethprime && strcmp (dev->name, ethprime) == 0) {
245 if (strchr(dev->name, ' '))
246 puts("\nWarning: eth device name has a space!\n");
248 eth_getenv_enetaddr_by_index(eth_number, env_enetaddr);
250 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
251 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
252 memcmp(dev->enetaddr, env_enetaddr, 6))
254 printf ("\nWarning: %s MAC addresses don't match:\n",
256 printf ("Address in SROM is %pM\n",
258 printf ("Address in environment is %pM\n",
262 memcpy(dev->enetaddr, env_enetaddr, 6);
264 if (dev->write_hwaddr &&
265 !eth_mac_skip(eth_number) &&
266 is_valid_ether_addr(dev->enetaddr)) {
267 dev->write_hwaddr(dev);
272 } while(dev != eth_devices);
274 /* update current ethernet name */
276 char *act = getenv("ethact");
277 if (act == NULL || strcmp(act, eth_current->name) != 0)
278 setenv("ethact", eth_current->name);
280 setenv("ethact", NULL);
288 #ifdef CONFIG_MCAST_TFTP
290 * mcast_addr: multicast ipaddr from which multicast Mac is made
291 * join: 1=join, 0=leave.
293 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
296 if (!eth_current || !eth_current->mcast)
298 mcast_mac[5] = htonl(mcast_ip) & 0xff;
299 mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
300 mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
304 return eth_current->mcast(eth_current, mcast_mac, join);
307 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
308 * and this is the ethernet-crc method needed for TSEC -- and perhaps
309 * some other adapter -- hash tables
311 #define CRCPOLY_LE 0xedb88320
312 u32 ether_crc (size_t len, unsigned char const *p)
319 for (i = 0; i < 8; i++)
320 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
322 /* an reverse the bits, cuz of way they arrive -- last-first */
323 crc = (crc >> 16) | (crc << 16);
324 crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
325 crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
326 crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
327 crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
334 int eth_init(bd_t *bis)
337 struct eth_device *old_current, *dev;
340 puts ("No ethernet found.\n");
344 /* Sync environment with network devices */
348 uchar env_enetaddr[6];
350 if (eth_getenv_enetaddr_by_index(eth_number, env_enetaddr))
351 memcpy(dev->enetaddr, env_enetaddr, 6);
355 } while (dev != eth_devices);
357 old_current = eth_current;
359 debug("Trying %s\n", eth_current->name);
361 if (eth_current->init(eth_current,bis) >= 0) {
362 eth_current->state = ETH_STATE_ACTIVE;
369 } while (old_current != eth_current);
379 eth_current->halt(eth_current);
381 eth_current->state = ETH_STATE_PASSIVE;
384 int eth_send(volatile void *packet, int length)
389 return eth_current->send(eth_current, packet, length);
397 return eth_current->recv(eth_current);
401 static void eth_save_packet(volatile void *packet, int length)
403 volatile char *p = packet;
406 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
409 if (PKTSIZE < length)
412 for (i = 0; i < length; i++)
413 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
415 eth_rcv_bufs[eth_rcv_last].length = length;
416 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
419 int eth_receive(volatile void *packet, int length)
421 volatile char *p = packet;
422 void *pp = push_packet;
425 if (eth_rcv_current == eth_rcv_last) {
426 push_packet = eth_save_packet;
430 if (eth_rcv_current == eth_rcv_last)
434 if (length < eth_rcv_bufs[eth_rcv_current].length)
437 length = eth_rcv_bufs[eth_rcv_current].length;
439 for (i = 0; i < length; i++)
440 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
442 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
445 #endif /* CONFIG_API */
447 void eth_try_another(int first_restart)
449 static struct eth_device *first_failed = NULL;
450 char *ethrotate, *act;
453 * Do not rotate between network interfaces when
454 * 'ethrotate' variable is set to 'no'.
456 if (((ethrotate = getenv ("ethrotate")) != NULL) &&
457 (strcmp(ethrotate, "no") == 0))
464 first_failed = eth_current;
467 eth_current = eth_current->next;
469 /* update current ethernet name */
470 act = getenv("ethact");
471 if (act == NULL || strcmp(act, eth_current->name) != 0)
472 setenv("ethact", eth_current->name);
474 if (first_failed == eth_current) {
479 void eth_set_current(void)
481 static char *act = NULL;
482 static int env_changed_id = 0;
483 struct eth_device* old_current;
486 if (!eth_current) /* XXX no current */
489 env_id = get_env_id();
490 if ((act == NULL) || (env_changed_id != env_id)) {
491 act = getenv("ethact");
492 env_changed_id = env_id;
495 old_current = eth_current;
497 if (strcmp(eth_current->name, act) == 0)
499 eth_current = eth_current->next;
500 } while (old_current != eth_current);
503 setenv("ethact", eth_current->name);
506 char *eth_get_name (void)
508 return (eth_current ? eth_current->name : "unknown");
511 #else /* !CONFIG_NET_MULTI */
513 #warning Ethernet driver is deprecated. Please update to use CONFIG_NET_MULTI
515 extern int at91rm9200_miiphy_initialize(bd_t *bis);
516 extern int mcf52x2_miiphy_initialize(bd_t *bis);
517 extern int ns7520_miiphy_initialize(bd_t *bis);
520 int eth_initialize(bd_t *bis)
522 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
526 #if defined(CONFIG_AT91RM9200)
527 at91rm9200_miiphy_initialize(bis);
529 #if defined(CONFIG_MCF52x2)
530 mcf52x2_miiphy_initialize(bis);
532 #if defined(CONFIG_DRIVER_NS7520_ETHERNET)
533 ns7520_miiphy_initialize(bis);