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 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;
109 BUG_ON(devname == NULL);
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;
137 if (dev->index == index) {
142 } while (dev != eth_devices);
147 int eth_get_dev_index (void)
153 return eth_current->index;
156 static void eth_current_changed(void)
158 char *act = getenv("ethact");
159 /* update current ethernet name */
161 if (act == NULL || strcmp(act, eth_current->name) != 0)
162 setenv("ethact", eth_current->name);
165 * remove the variable completely if there is no active
168 else if (act != NULL)
169 setenv("ethact", NULL);
172 int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
175 unsigned char env_enetaddr[6];
178 if (!eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr))
181 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
182 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
183 memcmp(dev->enetaddr, env_enetaddr, 6)) {
184 printf("\nWarning: %s MAC addresses don't match:\n",
186 printf("Address in SROM is %pM\n",
188 printf("Address in environment is %pM\n",
192 memcpy(dev->enetaddr, env_enetaddr, 6);
195 if (dev->write_hwaddr &&
196 !eth_mac_skip(eth_number) &&
197 is_valid_ether_addr(dev->enetaddr)) {
198 ret = dev->write_hwaddr(dev);
204 int eth_register(struct eth_device *dev)
206 struct eth_device *d;
207 static int index = 0;
209 assert(strlen(dev->name) < NAMESIZE);
212 eth_current = eth_devices = dev;
213 eth_current_changed();
215 for (d=eth_devices; d->next!=eth_devices; d=d->next)
220 dev->state = ETH_STATE_INIT;
221 dev->next = eth_devices;
222 dev->index = index++;
227 int eth_initialize(bd_t *bis)
233 show_boot_progress (64);
234 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
243 * If board-specific initialization exists, call it.
244 * If not, call a CPU-specific one
246 if (board_eth_init != __def_eth_init) {
247 if (board_eth_init(bis) < 0)
248 printf("Board Net Initialization Failed\n");
249 } else if (cpu_eth_init != __def_eth_init) {
250 if (cpu_eth_init(bis) < 0)
251 printf("CPU Net Initialization Failed\n");
253 printf("Net Initialization Skipped\n");
255 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
256 mv6436x_eth_initialize(bis);
258 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
259 mv6446x_eth_initialize(bis);
262 puts ("No ethernet found.\n");
263 show_boot_progress (-64);
265 struct eth_device *dev = eth_devices;
266 char *ethprime = getenv ("ethprime");
268 show_boot_progress (65);
273 printf("%s", dev->name);
275 if (ethprime && strcmp (dev->name, ethprime) == 0) {
280 if (strchr(dev->name, ' '))
281 puts("\nWarning: eth device name has a space!\n");
283 if (eth_write_hwaddr(dev, "eth", dev->index))
284 puts("\nWarning: failed to set MAC address\n");
288 } while(dev != eth_devices);
290 eth_current_changed();
297 #ifdef CONFIG_MCAST_TFTP
299 * mcast_addr: multicast ipaddr from which multicast Mac is made
300 * join: 1=join, 0=leave.
302 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
305 if (!eth_current || !eth_current->mcast)
307 mcast_mac[5] = htonl(mcast_ip) & 0xff;
308 mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
309 mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
313 return eth_current->mcast(eth_current, mcast_mac, join);
316 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
317 * and this is the ethernet-crc method needed for TSEC -- and perhaps
318 * some other adapter -- hash tables
320 #define CRCPOLY_LE 0xedb88320
321 u32 ether_crc (size_t len, unsigned char const *p)
328 for (i = 0; i < 8; i++)
329 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
331 /* an reverse the bits, cuz of way they arrive -- last-first */
332 crc = (crc >> 16) | (crc << 16);
333 crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
334 crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
335 crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
336 crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
343 int eth_init(bd_t *bis)
345 struct eth_device *old_current, *dev;
348 puts ("No ethernet found.\n");
352 /* Sync environment with network devices */
355 uchar env_enetaddr[6];
357 if (eth_getenv_enetaddr_by_index("eth", dev->index,
359 memcpy(dev->enetaddr, env_enetaddr, 6);
362 } while (dev != eth_devices);
364 old_current = eth_current;
366 debug("Trying %s\n", eth_current->name);
368 if (eth_current->init(eth_current,bis) >= 0) {
369 eth_current->state = ETH_STATE_ACTIVE;
376 } while (old_current != eth_current);
386 eth_current->halt(eth_current);
388 eth_current->state = ETH_STATE_PASSIVE;
391 int eth_send(volatile void *packet, int length)
396 return eth_current->send(eth_current, packet, length);
404 return eth_current->recv(eth_current);
408 static void eth_save_packet(volatile void *packet, int length)
410 volatile char *p = packet;
413 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
416 if (PKTSIZE < length)
419 for (i = 0; i < length; i++)
420 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
422 eth_rcv_bufs[eth_rcv_last].length = length;
423 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
426 int eth_receive(volatile void *packet, int length)
428 volatile char *p = packet;
429 void *pp = push_packet;
432 if (eth_rcv_current == eth_rcv_last) {
433 push_packet = eth_save_packet;
437 if (eth_rcv_current == eth_rcv_last)
441 if (length < eth_rcv_bufs[eth_rcv_current].length)
444 length = eth_rcv_bufs[eth_rcv_current].length;
446 for (i = 0; i < length; i++)
447 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
449 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
452 #endif /* CONFIG_API */
454 void eth_try_another(int first_restart)
456 static struct eth_device *first_failed = NULL;
460 * Do not rotate between network interfaces when
461 * 'ethrotate' variable is set to 'no'.
463 if (((ethrotate = getenv ("ethrotate")) != NULL) &&
464 (strcmp(ethrotate, "no") == 0))
471 first_failed = eth_current;
474 eth_current = eth_current->next;
476 eth_current_changed();
478 if (first_failed == eth_current) {
483 void eth_set_current(void)
485 static char *act = NULL;
486 static int env_changed_id = 0;
487 struct eth_device* old_current;
490 if (!eth_current) /* XXX no current */
493 env_id = get_env_id();
494 if ((act == NULL) || (env_changed_id != env_id)) {
495 act = getenv("ethact");
496 env_changed_id = env_id;
499 old_current = eth_current;
501 if (strcmp(eth_current->name, act) == 0)
503 eth_current = eth_current->next;
504 } while (old_current != eth_current);
507 eth_current_changed();
510 char *eth_get_name (void)
512 return (eth_current ? eth_current->name : "unknown");