summaryrefslogtreecommitdiff
path: root/board/keymile/common/common.c
blob: 8392a6413ea30aba8691313f2bb588dd47739e0e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
/*
 * (C) Copyright 2008
 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#if defined(CONFIG_MGCOGE) || defined(CONFIG_MGCOGE2NE)
#include <mpc8260.h>
#endif
#include <ioports.h>
#include <malloc.h>
#include <hush.h>
#include <net.h>
#include <netdev.h>
#include <asm/io.h>

#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
#include <libfdt.h>
#endif

#include "../common/common.h"
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
#include <i2c.h>

static void i2c_write_start_seq(void);
static int i2c_make_abort(void);

int ivm_calc_crc(unsigned char *buf, int len)
{
	const unsigned short crc_tab[16] = {
		0x0000, 0xCC01, 0xD801, 0x1400,
		0xF001, 0x3C00, 0x2800, 0xE401,
		0xA001, 0x6C00, 0x7800, 0xB401,
		0x5000, 0x9C01, 0x8801, 0x4400};

	unsigned short crc     = 0;   /* final result */
	unsigned short r1      = 0;   /* temp */
	unsigned char  byte    = 0;   /* input buffer */
	int	i;

	/* calculate CRC from array data */
	for (i = 0; i < len; i++) {
		byte = buf[i];

		/* lower 4 bits */
		r1 = crc_tab[crc & 0xF];
		crc = ((crc) >> 4) & 0x0FFF;
		crc = crc ^ r1 ^ crc_tab[byte & 0xF];

		/* upper 4 bits */
		r1 = crc_tab[crc & 0xF];
		crc = (crc >> 4) & 0x0FFF;
		crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF];
	}
	return crc;
}

static int ivm_set_value(char *name, char *value)
{
	char tempbuf[256];

	if (value != NULL) {
		sprintf(tempbuf, "%s=%s", name, value);
		return set_local_var(tempbuf, 0);
	} else {
		unset_local_var(name);
	}
	return 0;
}

static int ivm_get_value(unsigned char *buf, int len, char *name, int off,
				int check)
{
	unsigned short	val;
	unsigned char	valbuf[30];

	if ((buf[off + 0] != buf[off + 2]) &&
	    (buf[off + 2] != buf[off + 4])) {
		printf("%s Error corrupted %s\n", __func__, name);
		val = -1;
	} else {
		val = buf[off + 0] + (buf[off + 1] << 8);
		if ((val == 0) && (check == 1))
			val = -1;
	}
	sprintf((char *)valbuf, "%x", val);
	ivm_set_value(name, (char *)valbuf);
	return val;
}

#define INV_BLOCKSIZE		0x100
#define INV_DATAADDRESS		0x21
#define INVENTORYDATASIZE	(INV_BLOCKSIZE - INV_DATAADDRESS - 3)

#define IVM_POS_SHORT_TEXT		0
#define IVM_POS_MANU_ID			1
#define IVM_POS_MANU_SERIAL		2
#define IVM_POS_PART_NUMBER		3
#define IVM_POS_BUILD_STATE		4
#define IVM_POS_SUPPLIER_PART_NUMBER	5
#define IVM_POS_DELIVERY_DATE		6
#define IVM_POS_SUPPLIER_BUILD_STATE	7
#define IVM_POS_CUSTOMER_ID		8
#define IVM_POS_CUSTOMER_PROD_ID	9
#define IVM_POS_HISTORY			10
#define IVM_POS_SYMBOL_ONLY		11

static char convert_char(char c)
{
	return (c < ' ' || c > '~') ? '.' : c;
}

static int ivm_findinventorystring(int type,
					unsigned char* const string,
					unsigned long maxlen,
					unsigned char *buf)
{
	int xcode = 0;
	unsigned long cr = 0;
	unsigned long addr = INV_DATAADDRESS;
	unsigned long size = 0;
	unsigned long nr = type;
	int stop = 0; 	/* stop on semicolon */

	memset(string, '\0', maxlen);
	switch (type) {
		case IVM_POS_SYMBOL_ONLY:
			nr = 0;
			stop= 1;
		break;
		default:
			nr = type;
			stop = 0;
	}

	/* Look for the requested number of CR. */
	while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
		if ((buf[addr] == '\r')) {
			cr++;
		}
		addr++;
	}

	/*
	 * the expected number of CR was found until the end of the IVM
	 *  content --> fill string
	 */
	if (addr < INVENTORYDATASIZE) {
		/* Copy the IVM string in the corresponding string */
		for (; (buf[addr] != '\r')			&&
			((buf[addr] != ';') ||  (!stop))	&&
			(size < (maxlen - 1)			&&
			(addr < INVENTORYDATASIZE)); addr++)
		{
			size += sprintf((char *)string + size, "%c",
						convert_char (buf[addr]));
		}

		/*
		 * copy phase is done: check if everything is ok. If not,
		 * the inventory data is most probably corrupted: tell
		 * the world there is a problem!
		 */
		if (addr == INVENTORYDATASIZE) {
			xcode = -1;
			printf("Error end of string not found\n");
		} else if ((size >= (maxlen - 1)) &&
			   (buf[addr] != '\r')) {
			xcode = -1;
			printf("string too long till next CR\n");
		}
	} else {
		/*
		 * some CR are missing...
		 * the inventory data is most probably corrupted
		 */
		xcode = -1;
		printf("not enough cr found\n");
	}
	return xcode;
}

#define GET_STRING(name, which, len) \
	if (ivm_findinventorystring(which, valbuf, len, buf) == 0) { \
		ivm_set_value(name, (char *)valbuf); \
	}

static int ivm_check_crc(unsigned char *buf, int block)
{
	unsigned long	crc;
	unsigned long	crceeprom;

	crc = ivm_calc_crc(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2);
	crceeprom = (buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 1] + \
			buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2] * 256);
	if (crc != crceeprom) {
		if (block == 0)
			printf("Error CRC Block: %d EEprom: calculated: \
			%lx EEprom: %lx\n", block, crc, crceeprom);
		return -1;
	}
	return 0;
}

static int ivm_analyze_block2(unsigned char *buf, int len)
{
	unsigned char	valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
	unsigned long	count;

	/* IVM_MacAddress */
	sprintf((char *)valbuf, "%pM", buf);
	ivm_set_value("IVM_MacAddress", (char *)valbuf);
	/* if an offset is defined, add it */
#if defined(CONFIG_PIGGY_MAC_ADRESS_OFFSET)
	if (CONFIG_PIGGY_MAC_ADRESS_OFFSET > 0) {
		unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];

		val += CONFIG_PIGGY_MAC_ADRESS_OFFSET;
		buf[4] = (val >> 16) & 0xff;
		buf[5] = (val >> 8) & 0xff;
		buf[6] = val & 0xff;
		sprintf((char *)valbuf, "%pM", buf);
	}
#endif
	if (getenv("ethaddr") == NULL)
		setenv((char *)"ethaddr", (char *)valbuf);

	/* IVM_MacCount */
	count = (buf[10] << 24) +
		   (buf[11] << 16) +
		   (buf[12] << 8)  +
		    buf[13];
	if (count == 0xffffffff)
		count = 1;
	sprintf((char *)valbuf, "%lx", count);
	ivm_set_value("IVM_MacCount", (char *)valbuf);
	return 0;
}

int ivm_analyze_eeprom(unsigned char *buf, int len)
{
	unsigned short	val;
	unsigned char	valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
	unsigned char	*tmp;

	if (ivm_check_crc(buf, 0) != 0)
		return -1;

	ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
			"IVM_BoardId", 0, 1);
	val = ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
			"IVM_HWKey", 6, 1);
	if (val != 0xffff) {
		sprintf((char *)valbuf, "%x", ((val / 100) % 10));
		ivm_set_value("IVM_HWVariant", (char *)valbuf);
		sprintf((char *)valbuf, "%x", (val % 100));
		ivm_set_value("IVM_HWVersion", (char *)valbuf);
	}
	ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
		"IVM_Functions", 12, 0);

	GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
	GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
	tmp = (unsigned char *) getenv("IVM_DeviceName");
	if (tmp) {
		int	len = strlen((char *)tmp);
		int	i = 0;

		while (i < len) {
			if (tmp[i] == ';') {
				ivm_set_value("IVM_ShortText",
					(char *)&tmp[i + 1]);
				break;
			}
			i++;
		}
		if (i >= len)
			ivm_set_value("IVM_ShortText", NULL);
	} else {
		ivm_set_value("IVM_ShortText", NULL);
	}
	GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32)
	GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20)
	GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32)
	GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32)
	GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32)
	GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32)
	GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32)
	GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32)
	GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32)

	if (ivm_check_crc(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
		return 0;
	ivm_analyze_block2(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2],
		CONFIG_SYS_IVM_EEPROM_PAGE_LEN);

	return 0;
}

int ivm_read_eeprom(void)
{
#if defined(CONFIG_I2C_MUX)
	I2C_MUX_DEVICE *dev = NULL;
#endif
	uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
	uchar	*buf;
	unsigned dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
	int ret;

#if defined(CONFIG_I2C_MUX)
	/* First init the Bus, select the Bus */
#if defined(CONFIG_SYS_I2C_IVM_BUS)
	dev = i2c_mux_ident_muxstring((uchar *)CONFIG_SYS_I2C_IVM_BUS);
#else
	buf = (unsigned char *) getenv("EEprom_ivm");
	if (buf != NULL)
		dev = i2c_mux_ident_muxstring(buf);
#endif
	if (dev == NULL) {
		printf("Error couldnt add Bus for IVM\n");
		return -1;
	}
	i2c_set_bus_num(dev->busid);
#endif

	buf = (unsigned char *) getenv("EEprom_ivm_addr");
	if (buf != NULL)
		dev_addr = simple_strtoul((char *)buf, NULL, 16);

	/* add deblocking here */
	i2c_make_abort();

	ret = i2c_read(dev_addr, 0, 1, i2c_buffer,
		CONFIG_SYS_IVM_EEPROM_MAX_LEN);
	if (ret != 0) {
		printf ("Error reading EEprom\n");
		return -2;
	}

	return ivm_analyze_eeprom(i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
}

#if defined(CONFIG_SYS_I2C_INIT_BOARD)
#define DELAY_ABORT_SEQ		62  /* @200kHz 9 clocks = 44us, 62us is ok */
#define DELAY_HALF_PERIOD	(500 / (CONFIG_SYS_I2C_SPEED / 1000))

#if defined(CONFIG_MGCOGE) || defined(CONFIG_MGCOGE2NE)
#define SDA_MASK	0x00010000
#define SCL_MASK	0x00020000
static void set_pin(int state, unsigned long mask)
{
	ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);

	if (state)
		setbits_be32(&iop->pdat, mask);
	else
		clrbits_be32(&iop->pdat, mask);

	setbits_be32(&iop->pdir, mask);
}

static int get_pin(unsigned long mask)
{
	ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);

	clrbits_be32(&iop->pdir, mask);
	return 0 != (in_be32(&iop->pdat) & mask);
}

static void set_sda(int state)
{
	set_pin(state, SDA_MASK);
}

static void set_scl(int state)
{
	set_pin(state, SCL_MASK);
}

static int get_sda(void)
{
	return get_pin(SDA_MASK);
}

static int get_scl(void)
{
	return get_pin(SCL_MASK);
}

#if defined(CONFIG_HARD_I2C)
static void setports(int gpio)
{
	ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);

	if (gpio) {
		clrbits_be32(&iop->ppar, (SDA_MASK | SCL_MASK));
		clrbits_be32(&iop->podr, (SDA_MASK | SCL_MASK));
	} else {
		setbits_be32(&iop->ppar, (SDA_MASK | SCL_MASK));
		clrbits_be32(&iop->pdir, (SDA_MASK | SCL_MASK));
		setbits_be32(&iop->podr, (SDA_MASK | SCL_MASK));
	}
}
#endif
#endif

#if !defined(CONFIG_MPC83xx)
static void i2c_write_start_seq(void)
{
	set_sda(1);
	udelay(DELAY_HALF_PERIOD);
	set_scl(1);
	udelay(DELAY_HALF_PERIOD);
	set_sda(0);
	udelay(DELAY_HALF_PERIOD);
	set_scl(0);
	udelay(DELAY_HALF_PERIOD);
}

/*
 * I2C is a synchronous protocol and resets of the processor in the middle
 * of an access can block the I2C Bus until a powerdown of the full unit is
 * done. This function toggles the SCL until the SCL and SCA line are
 * released, but max. 16 times, after this a I2C start-sequence is sent.
 * This I2C Deblocking mechanism was developed by Keymile in association
 * with Anatech and Atmel in 1998.
 */
static int i2c_make_abort(void)
{

#if defined(CONFIG_HARD_I2C) && !defined(MACH_TYPE_KM_KIRKWOOD)
	immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ;
	i2c8260_t *i2c	= (i2c8260_t *)&immap->im_i2c;

	/*
	 * disable I2C controller first, otherwhise it thinks we want to
	 * talk to the slave port...
	 */
	clrbits_8(&i2c->i2c_i2mod, 0x01);

	/* Set the PortPins to GPIO */
	setports(1);
#endif

	int	scl_state = 0;
	int	sda_state = 0;
	int	i = 0;
	int	ret = 0;

	if (!get_sda()) {
		ret = -1;
		while (i < 16) {
			i++;
			set_scl(0);
			udelay(DELAY_ABORT_SEQ);
			set_scl(1);
			udelay(DELAY_ABORT_SEQ);
			scl_state = get_scl();
			sda_state = get_sda();
			if (scl_state && sda_state) {
				ret = 0;
				break;
			}
		}
	}
	if (ret == 0)
		for (i = 0; i < 5; i++)
			i2c_write_start_seq();

	/* respect stop setup time */
	udelay(DELAY_ABORT_SEQ);
	set_scl(1);
	udelay(DELAY_ABORT_SEQ);
	set_sda(1);
	get_sda();

#if defined(CONFIG_HARD_I2C)
	/* Set the PortPins back to use for I2C */
	setports(0);
#endif
	return ret;
}
#endif

#if defined(CONFIG_MPC83xx)
static void i2c_write_start_seq(void)
{
	struct fsl_i2c *dev;
	dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET);
	udelay(DELAY_ABORT_SEQ);
	out_8(&dev->cr, (I2C_CR_MEN | I2C_CR_MSTA));
	udelay(DELAY_ABORT_SEQ);
	out_8(&dev->cr, (I2C_CR_MEN));
}

static int i2c_make_abort(void)
{
	struct fsl_i2c *dev;
	dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET);
	uchar	dummy;
	uchar   last;
	int     nbr_read = 0;
	int     i = 0;
	int	    ret = 0;

	/* wait after each operation to finsh with a delay */
	out_8(&dev->cr, (I2C_CR_MSTA));
	udelay(DELAY_ABORT_SEQ);
	out_8(&dev->cr, (I2C_CR_MEN | I2C_CR_MSTA));
	udelay(DELAY_ABORT_SEQ);
	dummy = in_8(&dev->dr);
	udelay(DELAY_ABORT_SEQ);
	last = in_8(&dev->dr);
	nbr_read++;

	/*
	 * do read until the last bit is 1, but stop if the full eeprom is
	 * read.
	 */
	while (((last & 0x01) != 0x01) &&
		(nbr_read < CONFIG_SYS_IVM_EEPROM_MAX_LEN)) {
		udelay(DELAY_ABORT_SEQ);
		last = in_8(&dev->dr);
		nbr_read++;
	}
	if ((last & 0x01) != 0x01)
		ret = -2;
	if ((last != 0xff) || (nbr_read > 1))
		printf("[INFO] i2c abort after %d bytes (0x%02x)\n",
			nbr_read, last);
	udelay(DELAY_ABORT_SEQ);
	out_8(&dev->cr, (I2C_CR_MEN));
	udelay(DELAY_ABORT_SEQ);
	/* clear status reg */
	out_8(&dev->sr, 0);

	for (i = 0; i < 5; i++)
		i2c_write_start_seq();
	if (ret != 0)
		printf("[ERROR] i2c abort failed after %d bytes (0x%02x)\n",
			nbr_read, last);

	return ret;
}
#endif

/**
 * i2c_init_board - reset i2c bus. When the board is powercycled during a
 * bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
 */
void i2c_init_board(void)
{
	/* Now run the AbortSequence() */
	i2c_make_abort();
}
#endif
#endif

#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
int fdt_set_node_and_value(void *blob,
				char *nodename,
				char *regname,
				void *var,
				int size)
{
	int ret = 0;
	int nodeoffset = 0;

	nodeoffset = fdt_path_offset(blob, nodename);
	if (nodeoffset >= 0) {
		ret = fdt_setprop(blob, nodeoffset, regname, var,
					size);
		if (ret < 0)
			printf("ft_blob_update(): cannot set %s/%s "
				"property err:%s\n", nodename, regname,
				fdt_strerror(ret));
	} else {
		printf("ft_blob_update(): cannot find %s node "
			"err:%s\n", nodename, fdt_strerror(nodeoffset));
	}
	return ret;
}

int fdt_get_node_and_value(void *blob,
				char *nodename,
				char *propname,
				void **var)
{
	int len;
	int nodeoffset = 0;

	nodeoffset = fdt_path_offset(blob, nodename);
	if (nodeoffset >= 0) {
		*var = (void *)fdt_getprop(blob, nodeoffset, propname, &len);
		if (len == 0) {
			/* no value */
			printf("%s no value\n", __func__);
			return -1;
		} else if (len > 0) {
			return len;
		} else {
			printf("libfdt fdt_getprop(): %s\n",
				fdt_strerror(len));
			return -2;
		}
	} else {
		printf("%s: cannot find %s node err:%s\n", __func__,
			nodename, fdt_strerror(nodeoffset));
		return -3;
	}
}
#endif

#if !defined(MACH_TYPE_KM_KIRKWOOD)
int ethernet_present(void)
{
	struct km_bec_fpga *base =
		(struct km_bec_fpga *)CONFIG_SYS_KMBEC_FPGA_BASE;

	return in_8(&base->bprth) & PIGGY_PRESENT;
}
#endif

int board_eth_init(bd_t *bis)
{
#ifdef CONFIG_KEYMILE_HDLC_ENET
	(void)keymile_hdlc_enet_initialize(bis);
#endif
	if (ethernet_present())
		return cpu_eth_init(bis);

	return -1;
}