1 /*------------------------------------------------------------------------
3 * This is a driver for SMSC's LAN91C96 single-chip Ethernet device, based
4 * on the SMC91111 driver from U-boot.
7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
8 * Rolf Offermanns <rof@sysgo.de>
10 * Copyright (C) 2001 Standard Microsystems Corporation (SMSC)
11 * Developed by Simple Network Magic Corporation (SNMC)
12 * Copyright (C) 1996 by Erik Stahlman (ES)
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 * Information contained in this file was obtained from the LAN91C96
29 * manual from SMC. To get a copy, if you really want one, you can find
30 * information under www.smsc.com.
33 * "Features" of the SMC chip:
34 * 6144 byte packet memory. ( for the 91C96 )
35 * EEPROM for configuration
36 * AUI/TP selection ( mine has 10Base2/10BaseT select )
39 * io = for the base address
43 * Erik Stahlman ( erik@vt.edu )
44 * Daris A Nevil ( dnevil@snmc.com )
47 * Hardware multicast code from Peter Cammaert ( pc@denkart.be )
50 * o SMSC LAN91C96 databook (www.smsc.com)
51 * o smc91111.c (u-boot driver)
52 * o smc9194.c (linux kernel driver)
53 * o lan91c96.c (Intel Diagnostic Manager driver)
56 * 04/30/03 Mathijs Haarman Modified smc91111.c (u-boot version)
58 *---------------------------------------------------------------------------
66 #ifdef CONFIG_DRIVER_LAN91C96
68 #if (CONFIG_COMMANDS & CFG_CMD_NET)
70 /*------------------------------------------------------------------------
72 * Configuration options, for the experienced user to change.
74 -------------------------------------------------------------------------*/
76 /* Use power-down feature of the chip */
80 * Wait time for memory to be free. This probably shouldn't be
81 * tuned that much, as waiting for this means nothing else happens
84 #define MEMORY_WAIT_TIME 16
89 #define PRINTK3(args...) printf(args)
91 #define PRINTK3(args...)
95 #define PRINTK2(args...) printf(args)
97 #define PRINTK2(args...)
101 #define PRINTK(args...) printf(args)
103 #define PRINTK(args...)
107 /*------------------------------------------------------------------------
109 * The internal workings of the driver. If you are changing anything
110 * here with the SMC stuff, you should have the datasheet and know
111 * what you are doing.
113 *------------------------------------------------------------------------
115 #define CARDNAME "LAN91C96"
117 #define SMC_BASE_ADDRESS CONFIG_LAN91C96_BASE
119 #define SMC_DEV_NAME "LAN91C96"
120 #define SMC_ALLOC_MAX_TRY 5
121 #define SMC_TX_TIMEOUT 30
125 #ifdef CONFIG_LAN91C96_USE_32_BIT
131 /*-----------------------------------------------------------------
133 * The driver can be entered at any of the following entry points.
135 *-----------------------------------------------------------------
138 extern int eth_init (bd_t * bd);
139 extern void eth_halt (void);
140 extern int eth_rx (void);
141 extern int eth_send (volatile void *packet, int length);
142 static int smc_hw_init (void);
145 * This is called by register_netdev(). It is responsible for
146 * checking the portlist for the SMC9000 series chipset. If it finds
147 * one, then it will initialize the device, find the hardware information,
148 * and sets up the appropriate device parameters.
149 * NOTE: Interrupts are *OFF* when this procedure is called.
151 * NB:This shouldn't be static since it is referred to externally.
156 * This is called by unregister_netdev(). It is responsible for
157 * cleaning up before the driver is finally unregistered and discarded.
159 void smc_destructor (void);
162 * The kernel calls this function when someone wants to use the device,
163 * typically 'ifconfig ethX up'.
165 static int smc_open (bd_t *bd);
169 * This is called by the kernel in response to 'ifconfig ethX down'. It
170 * is responsible for cleaning up everything that the open routine
171 * does, and maybe putting the card into a powerdown state.
173 static int smc_close (void);
176 * This is a separate procedure to handle the receipt of a packet, to
177 * leave the interrupt code looking slightly cleaner
179 static int smc_rcv (void);
181 /* See if a MAC address is defined in the current environment. If so use it. If not
182 . print a warning and set the environment and other globals with the default.
183 . If an EEPROM is present it really should be consulted.
185 int smc_get_ethaddr(bd_t *bd);
186 int get_rom_mac(char *v_rom_mac);
188 /* ------------------------------------------------------------
190 * ------------------------------------------------------------
193 static char smc_mac_addr[] = { 0xc0, 0x00, 0x00, 0x1b, 0x62, 0x9c };
196 * This function must be called before smc_open() if you want to override
197 * the default mac address.
200 void smc_set_mac_addr (const char *addr)
204 for (i = 0; i < sizeof (smc_mac_addr); i++) {
205 smc_mac_addr[i] = addr[i];
210 * smc_get_macaddr is no longer used. If you want to override the default
211 * mac address, call smc_get_mac_addr as a part of the board initialisation.
215 void smc_get_macaddr (byte * addr)
217 /* MAC ADDRESS AT FLASHBLOCK 1 / OFFSET 0x10 */
218 unsigned char *dnp1110_mac = (unsigned char *) (0xE8000000 + 0x20010);
222 for (i = 0; i < 6; i++) {
223 addr[0] = *(dnp1110_mac + 0);
224 addr[1] = *(dnp1110_mac + 1);
225 addr[2] = *(dnp1110_mac + 2);
226 addr[3] = *(dnp1110_mac + 3);
227 addr[4] = *(dnp1110_mac + 4);
228 addr[5] = *(dnp1110_mac + 5);
233 /***********************************************
234 * Show available memory *
235 ***********************************************/
236 void dump_memory_info (void)
241 old_bank = SMC_inw (LAN91C96_BANK_SELECT) & 0xF;
244 mem_info = SMC_inw (LAN91C96_MIR);
245 PRINTK2 ("Memory: %4d available\n", (mem_info >> 8) * 2048);
247 SMC_SELECT_BANK (old_bank);
251 * A rather simple routine to print out a packet for debugging purposes.
254 static void print_packet (byte *, int);
257 /* #define tx_done(dev) 1 */
260 /* this does a soft reset on the device */
261 static void smc_reset (void);
263 /* Enable Interrupts, Receive, and Transmit */
264 static void smc_enable (void);
266 /* this puts the device in an inactive state */
267 static void smc_shutdown (void);
270 static int poll4int (byte mask, int timeout)
272 int tmo = get_timer (0) + timeout * CFG_HZ;
274 word old_bank = SMC_inw (LAN91C96_BANK_SELECT);
276 PRINTK2 ("Polling...\n");
278 while ((SMC_inw (LAN91C96_INT_STATS) & mask) == 0) {
279 if (get_timer (0) >= tmo) {
285 /* restore old bank selection */
286 SMC_SELECT_BANK (old_bank);
295 * Function: smc_reset( void )
297 * This sets the SMC91111 chip to its normal state, hopefully from whatever
298 * mess that any other DOS driver has put it in.
300 * Maybe I should reset more registers to defaults in here? SOFTRST should
304 * 1. send a SOFT RESET
305 * 2. wait for it to finish
306 * 3. enable autorelease mode
307 * 4. reset the memory management unit
308 * 5. clear all interrupts
311 static void smc_reset (void)
313 PRINTK2 ("%s:smc_reset\n", SMC_DEV_NAME);
315 /* This resets the registers mostly to defaults, but doesn't
316 affect EEPROM. That seems unnecessary */
318 SMC_outw (LAN91C96_RCR_SOFT_RST, LAN91C96_RCR);
322 /* Disable transmit and receive functionality */
323 SMC_outw (0, LAN91C96_RCR);
324 SMC_outw (0, LAN91C96_TCR);
326 /* set the control register */
328 SMC_outw (SMC_inw (LAN91C96_CONTROL) | LAN91C96_CTR_BIT_8,
331 /* Disable all interrupts */
332 SMC_outb (0, LAN91C96_INT_MASK);
336 * Function: smc_enable
337 * Purpose: let the chip talk to the outside work
339 * 1. Initialize the Memory Configuration Register
340 * 2. Enable the transmitter
341 * 3. Enable the receiver
343 static void smc_enable ()
345 PRINTK2 ("%s:smc_enable\n", SMC_DEV_NAME);
348 /* Initialize the Memory Configuration Register. See page
349 49 of the LAN91C96 data sheet for details. */
350 SMC_outw (LAN91C96_MCR_TRANSMIT_PAGES, LAN91C96_MCR);
352 /* Initialize the Transmit Control Register */
353 SMC_outw (LAN91C96_TCR_TXENA, LAN91C96_TCR);
354 /* Initialize the Receive Control Register
356 * The promiscuous bit set because I could not receive ARP reply
357 * packets from the server when I send a ARP request. It only works
358 * when I set the promiscuous bit
360 SMC_outw (LAN91C96_RCR_RXEN | LAN91C96_RCR_PRMS, LAN91C96_RCR);
364 * Function: smc_shutdown
365 * Purpose: closes down the SMC91xxx chip.
367 * 1. zero the interrupt mask
368 * 2. clear the enable receive flag
369 * 3. clear the enable xmit flags
372 * (1) maybe utilize power down mode.
373 * Why not yet? Because while the chip will go into power down mode,
374 * the manual says that it will wake up in response to any I/O requests
375 * in the register space. Empirical results do not show this working.
377 static void smc_shutdown ()
379 PRINTK2 (CARDNAME ":smc_shutdown\n");
381 /* no more interrupts for me */
383 SMC_outb (0, LAN91C96_INT_MASK);
385 /* and tell the card to stay away from that nasty outside world */
387 SMC_outb (0, LAN91C96_RCR);
388 SMC_outb (0, LAN91C96_TCR);
393 * Function: smc_hardware_send_packet(struct net_device * )
395 * This sends the actual packet to the SMC9xxx chip.
398 * First, see if a saved_skb is available.
399 * ( this should NOT be called if there is no 'saved_skb'
400 * Now, find the packet number that the chip allocated
401 * Point the data pointers at it in memory
402 * Set the length word in the chip's memory
403 * Dump the packet to chip memory
404 * Check if a last byte is needed ( odd length packet )
405 * if so, set the control flag right
406 * Tell the card to send it
407 * Enable the transmit interrupt, so I know if it failed
408 * Free the kernel data if I actually sent it.
410 static int smc_send_packet (volatile void *packet, int packet_length)
413 unsigned long ioaddr;
422 PRINTK3 ("%s:smc_hardware_send_packet\n", SMC_DEV_NAME);
424 length = ETH_ZLEN < packet_length ? packet_length : ETH_ZLEN;
427 ** The MMU wants the number of pages to be the number of 256 bytes
428 ** 'pages', minus 1 ( since a packet can't ever have 0 pages :) )
430 ** The 91C111 ignores the size bits, but the code is left intact
431 ** for backwards and future compatibility.
433 ** Pkt size for allocating is data length +6 (for additional status
434 ** words, length and ctl!)
436 ** If odd size then last byte is included in this header.
438 numPages = ((length & 0xfffe) + 6);
439 numPages >>= 8; /* Divide by 256 */
442 printf ("%s: Far too big packet error. \n", SMC_DEV_NAME);
446 /* now, try to allocate the memory */
449 SMC_outw (LAN91C96_MMUCR_ALLOC_TX | numPages, LAN91C96_MMU);
453 time_out = MEMORY_WAIT_TIME;
455 status = SMC_inb (LAN91C96_INT_STATS);
456 if (status & LAN91C96_IST_ALLOC_INT) {
458 SMC_outb (LAN91C96_IST_ALLOC_INT, LAN91C96_INT_STATS);
461 } while (--time_out);
464 PRINTK2 ("%s: memory allocation, try %d failed ...\n",
466 if (try < SMC_ALLOC_MAX_TRY)
472 PRINTK2 ("%s: memory allocation, try %d succeeded ...\n",
475 /* I can send the packet now.. */
477 ioaddr = SMC_BASE_ADDRESS;
479 buf = (byte *) packet;
481 /* If I get here, I _know_ there is a packet slot waiting for me */
482 packet_no = SMC_inb (LAN91C96_ARR);
483 if (packet_no & LAN91C96_ARR_FAILED) {
484 /* or isn't there? BAD CHIP! */
485 printf ("%s: Memory allocation failed. \n", SMC_DEV_NAME);
489 /* we have a packet address, so tell the card to use it */
490 SMC_outb (packet_no, LAN91C96_PNR);
492 /* point to the beginning of the packet */
493 SMC_outw (LAN91C96_PTR_AUTO_INCR, LAN91C96_POINTER);
495 PRINTK3 ("%s: Trying to xmit packet of length %x\n",
496 SMC_DEV_NAME, length);
499 printf ("Transmitting Packet\n");
500 print_packet (buf, length);
503 /* send the packet length ( +6 for status, length and ctl byte )
504 and the status word ( set to zeros ) */
506 SMC_outl ((length + 6) << 16, LAN91C96_DATA_HIGH);
508 SMC_outw (0, LAN91C96_DATA_HIGH);
509 /* send the packet length ( +6 for status words, length, and ctl */
510 SMC_outw ((length + 6), LAN91C96_DATA_HIGH);
511 #endif /* USE_32_BIT */
513 /* send the actual data
514 * I _think_ it's faster to send the longs first, and then
515 * mop up by sending the last word. It depends heavily
516 * on alignment, at least on the 486. Maybe it would be
517 * a good idea to check which is optimal? But that could take
518 * almost as much time as is saved?
521 SMC_outsl (LAN91C96_DATA_HIGH, buf, length >> 2);
523 SMC_outw (*((word *) (buf + (length & 0xFFFFFFFC))),
526 SMC_outsw (LAN91C96_DATA_HIGH, buf, (length) >> 1);
527 #endif /* USE_32_BIT */
529 /* Send the last byte, if there is one. */
530 if ((length & 1) == 0) {
531 SMC_outw (0, LAN91C96_DATA_HIGH);
533 SMC_outw (buf[length - 1] | 0x2000, LAN91C96_DATA_HIGH);
536 /* and let the chipset deal with it */
537 SMC_outw (LAN91C96_MMUCR_ENQUEUE, LAN91C96_MMU);
539 /* poll for TX INT */
540 if (poll4int (LAN91C96_MSK_TX_INT, SMC_TX_TIMEOUT)) {
542 PRINTK2 ("%s: TX timeout, sending failed...\n", SMC_DEV_NAME);
545 SMC_outw (LAN91C96_MMUCR_RELEASE_TX, LAN91C96_MMU);
547 /* wait for MMU getting ready (low) */
548 while (SMC_inw (LAN91C96_MMU) & LAN91C96_MMUCR_NO_BUSY) {
552 PRINTK2 ("MMU ready\n");
558 SMC_outw (LAN91C96_IST_TX_INT, LAN91C96_INT_STATS);
560 PRINTK2 ("%s: Sent packet of length %d \n", SMC_DEV_NAME, length);
563 SMC_outw (LAN91C96_MMUCR_RELEASE_TX, LAN91C96_MMU);
565 /* wait for MMU getting ready (low) */
566 while (SMC_inw (LAN91C96_MMU) & LAN91C96_MMUCR_NO_BUSY) {
570 PRINTK2 ("MMU ready\n");
576 /*-------------------------------------------------------------------------
577 * smc_destructor( struct net_device * dev )
579 * dev, pointer to the device structure
583 *--------------------------------------------------------------------------
585 void smc_destructor ()
587 PRINTK2 (CARDNAME ":smc_destructor\n");
592 * Open and Initialize the board
594 * Set up everything, reset the card, etc ..
597 static int smc_open (bd_t *bd)
599 int i, err; /* used to set hw ethernet address */
601 PRINTK2 ("%s:smc_open\n", SMC_DEV_NAME);
603 /* reset the hardware */
610 err = smc_get_ethaddr (bd); /* set smc_mac_addr, and sync it with u-boot globals */
612 memset (bd->bi_enetaddr, 0, 6); /* hack to make error stick! upper code will abort if not set */
613 return (-1); /* upper code ignores this, but NOT bi_enetaddr */
616 for (i = 0; i < 6; i += 2) {
619 address = smc_mac_addr[i + 1] << 8;
620 address |= smc_mac_addr[i];
621 SMC_outw (address, LAN91C96_IA0 + i);
624 for (i = 0; i < 6; i++)
625 SMC_outb (smc_mac_addr[i], LAN91C96_IA0 + i);
630 /*-------------------------------------------------------------
632 * smc_rcv - receive a packet from the card
634 * There is ( at least ) a packet waiting to be read from
638 * o If an error, record it
639 * o otherwise, read in the packet
640 *-------------------------------------------------------------
642 static int smc_rcv ()
655 packet_number = SMC_inw (LAN91C96_FIFO);
657 if (packet_number & LAN91C96_FIFO_RXEMPTY) {
661 PRINTK3 ("%s:smc_rcv\n", SMC_DEV_NAME);
662 /* start reading from the start of the packet */
663 SMC_outw (LAN91C96_PTR_READ | LAN91C96_PTR_RCV |
664 LAN91C96_PTR_AUTO_INCR, LAN91C96_POINTER);
666 /* First two words are status and packet_length */
668 stat_len = SMC_inl (LAN91C96_DATA_HIGH);
669 status = stat_len & 0xffff;
670 packet_length = stat_len >> 16;
672 status = SMC_inw (LAN91C96_DATA_HIGH);
673 packet_length = SMC_inw (LAN91C96_DATA_HIGH);
676 packet_length &= 0x07ff; /* mask off top bits */
678 PRINTK2 ("RCV: STATUS %4x LENGTH %4x\n", status, packet_length);
680 if (!(status & FRAME_FILTER)) {
681 /* Adjust for having already read the first two words */
682 packet_length -= 4; /*4; */
685 /* set odd length for bug in LAN91C111, */
686 /* which never sets RS_ODDFRAME */
691 PRINTK3 (" Reading %d dwords (and %d bytes) \n",
692 packet_length >> 2, packet_length & 3);
693 /* QUESTION: Like in the TX routine, do I want
694 to send the DWORDs or the bytes first, or some
695 mixture. A mixture might improve already slow PIO
697 SMC_insl (LAN91C96_DATA_HIGH, NetRxPackets[0], packet_length >> 2);
698 /* read the left over bytes */
699 if (packet_length & 3) {
702 byte *tail = (byte *) (NetRxPackets[0] + (packet_length & ~3));
703 dword leftover = SMC_inl (LAN91C96_DATA_HIGH);
705 for (i = 0; i < (packet_length & 3); i++)
706 *tail++ = (byte) (leftover >> (8 * i)) & 0xff;
709 PRINTK3 (" Reading %d words and %d byte(s) \n",
710 (packet_length >> 1), packet_length & 1);
711 SMC_insw (LAN91C96_DATA_HIGH, NetRxPackets[0], packet_length >> 1);
713 #endif /* USE_32_BIT */
716 printf ("Receiving Packet\n");
717 print_packet (NetRxPackets[0], packet_length);
725 while (SMC_inw (LAN91C96_MMU) & LAN91C96_MMUCR_NO_BUSY)
726 udelay (1); /* Wait until not busy */
728 /* error or good, tell the card to get rid of this packet */
729 SMC_outw (LAN91C96_MMUCR_RELEASE_RX, LAN91C96_MMU);
731 while (SMC_inw (LAN91C96_MMU) & LAN91C96_MMUCR_NO_BUSY)
732 udelay (1); /* Wait until not busy */
735 /* Pass the packet up to the protocol layers. */
736 NetReceive (NetRxPackets[0], packet_length);
737 return packet_length;
744 /*----------------------------------------------------
747 * this makes the board clean up everything that it can
748 * and not talk to the outside world. Caused by
749 * an 'ifconfig ethX down'
751 -----------------------------------------------------*/
752 static int smc_close ()
754 PRINTK2 ("%s:smc_close\n", SMC_DEV_NAME);
756 /* clear everything */
763 static void print_packet (byte * buf, int length)
770 printf ("Packet of length %d \n", length);
773 remainder = length % 16;
775 for (i = 0; i < lines; i++) {
778 for (cur = 0; cur < 8; cur++) {
783 printf ("%02x%02x ", a, b);
787 for (i = 0; i < remainder / 2; i++) {
792 printf ("%02x%02x ", a, b);
797 #endif /* SMC_DEBUG > 2 */
799 int eth_init (bd_t * bd)
801 return (smc_open(bd));
814 int eth_send (volatile void *packet, int length)
816 return smc_send_packet (packet, length);
820 /*-------------------------------------------------------------------------
824 * Reset and enable the device, check if the I/O space location
833 *--------------------------------------------------------------------------
835 static int smc_hw_init ()
837 unsigned short status_test;
839 /* The attribute register of the LAN91C96 is located at address
840 0x0e000000 on the lubbock platform */
841 volatile unsigned *attaddr = (unsigned *) (0x0e000000);
843 /* first reset, then enable the device. Sequence is critical */
844 attaddr[LAN91C96_ECOR] |= LAN91C96_ECOR_SRESET;
846 attaddr[LAN91C96_ECOR] &= ~LAN91C96_ECOR_SRESET;
847 attaddr[LAN91C96_ECOR] |= LAN91C96_ECOR_ENABLE;
849 /* force 16-bit mode */
850 attaddr[LAN91C96_ECSR] &= ~LAN91C96_ECSR_IOIS8;
853 /* check if the I/O address is correct, the upper byte of the
854 bank select register should read 0x33 */
856 status_test = SMC_inw (LAN91C96_BANK_SELECT);
857 if ((status_test & 0xFF00) != 0x3300) {
858 printf ("Failed to initialize ethernetchip\n");
864 #endif /* COMMANDS & CFG_NET */
867 /* smc_get_ethaddr (bd_t * bd)
869 * This checks both the environment and the ROM for an ethernet address. If
870 * found, the environment takes precedence.
873 int smc_get_ethaddr (bd_t * bd)
881 char *v_mac, es[] = "11:22:33:44:55:66";
886 env_size = getenv_r ("ethaddr", s_env_mac, sizeof (s_env_mac));
887 if (env_size != sizeof(es)) { /* Ignore if env is bad or not set */
888 printf ("\n*** Warning: ethaddr is not set properly, ignoring!!\n");
893 for (reg = 0; reg < 6; ++reg) { /* turn string into mac value */
894 v_env_mac[reg] = s ? simple_strtoul (s, &e, 16) : 0;
896 s = (*e) ? e + 1 : e;
900 rom_valid = get_rom_mac (v_rom_mac); /* get ROM mac value if any */
902 if (!env_present) { /* if NO env */
903 if (rom_valid) { /* but ROM is valid */
905 sprintf (s_env_mac, "%02X:%02X:%02X:%02X:%02X:%02X",
906 v_mac[0], v_mac[1], v_mac[2], v_mac[3],
908 setenv ("ethaddr", s_env_mac);
909 } else { /* no env, bad ROM */
910 printf ("\n*** ERROR: ethaddr is NOT set !!\n");
913 } else { /* good env, don't care ROM */
914 v_mac = v_env_mac; /* always use a good env over a ROM */
917 if (env_present && rom_valid) { /* if both env and ROM are good */
918 if (memcmp (v_env_mac, v_rom_mac, 6) != 0) {
919 printf ("\nWarning: MAC addresses don't match:\n");
920 printf ("\tHW MAC address: "
921 "%02X:%02X:%02X:%02X:%02X:%02X\n",
922 v_rom_mac[0], v_rom_mac[1],
923 v_rom_mac[2], v_rom_mac[3],
924 v_rom_mac[4], v_rom_mac[5] );
925 printf ("\t\"ethaddr\" value: "
926 "%02X:%02X:%02X:%02X:%02X:%02X\n",
927 v_env_mac[0], v_env_mac[1],
928 v_env_mac[2], v_env_mac[3],
929 v_env_mac[4], v_env_mac[5]) ;
930 debug ("### Set MAC addr from environment\n");
933 memcpy (bd->bi_enetaddr, v_mac, 6); /* update global address to match env (allows env changing) */
934 smc_set_mac_addr (v_mac); /* use old function to update smc default */
935 PRINTK("Using MAC Address %02X:%02X:%02X:%02X:%02X:%02X\n", v_mac[0], v_mac[1],
936 v_mac[2], v_mac[3], v_mac[4], v_mac[5]);
942 * Note, this has omly been tested for the OMAP730 P2.
945 int get_rom_mac (char *v_rom_mac)
947 #ifdef HARDCODE_MAC /* used for testing or to supress run time warnings */
948 char hw_mac_addr[] = { 0x02, 0x80, 0xad, 0x20, 0x31, 0xb8 };
950 memcpy (v_rom_mac, hw_mac_addr, 6);
957 v_rom_mac[i] = SMC_inb (LAN91C96_IA0 + i);
963 #endif /* CONFIG_DRIVER_LAN91C96 */