summaryrefslogtreecommitdiff
path: root/examples/standalone/smc91111_eeprom.c
blob: b91f34c3af0593095d262c84e8345ca9af6e925a (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
/*
 * (C) Copyright 2004
 * Robin Getz rgetz@blacfin.uclinux.org
 *
 * 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
 *
 * Heavily borrowed from the following peoples GPL'ed software:
 *  - Wolfgang Denk, DENX Software Engineering, wd@denx.de
 *       Das U-boot
 *  - Ladislav Michl ladis@linux-mips.org
 *       A rejected patch on the U-Boot mailing list
 */

#include <common.h>
#include <exports.h>
#include "../drivers/net/smc91111.h"

#ifndef SMC91111_EEPROM_INIT
# define SMC91111_EEPROM_INIT()
#endif

#define SMC_BASE_ADDRESS CONFIG_SMC91111_BASE
#define EEPROM		0x1
#define MAC		0x2
#define UNKNOWN		0x4

void dump_reg (struct eth_device *dev);
void dump_eeprom (struct eth_device *dev);
int write_eeprom_reg (struct eth_device *dev, int value, int reg);
void copy_from_eeprom (struct eth_device *dev);
void print_MAC (struct eth_device *dev);
int read_eeprom_reg (struct eth_device *dev, int reg);
void print_macaddr (struct eth_device *dev);

int smc91111_eeprom (int argc, char *argv[])
{
	int c, i, j, done, line, reg, value, start, what;
	char input[50];

	struct eth_device dev;
	dev.iobase = CONFIG_SMC91111_BASE;

	/* Print the ABI version */
	app_startup (argv);
	if (XF_VERSION != (int) get_version ()) {
		printf ("Expects ABI version %d\n", XF_VERSION);
		printf ("Actual U-Boot ABI version %d\n",
			(int) get_version ());
		printf ("Can't run\n\n");
		return (0);
	}

	SMC91111_EEPROM_INIT();

	if ((SMC_inw (&dev, BANK_SELECT) & 0xFF00) != 0x3300) {
		printf ("Can't find SMSC91111\n");
		return (0);
	}

	done = 0;
	what = UNKNOWN;
	printf ("\n");
	while (!done) {
		/* print the prompt */
		printf ("SMC91111> ");
		line = 0;
		i = 0;
		start = 1;
		while (!line) {
			/* Wait for a keystroke */
			while (!tstc ());

			c = getc ();
			/* Make Uppercase */
			if (c >= 'Z')
				c -= ('a' - 'A');
			/* printf(" |%02x| ",c); */

			switch (c) {
			case '\r':	/* Enter                */
			case '\n':
				input[i] = 0;
				puts ("\r\n");
				line = 1;
				break;
			case '\0':	/* nul                  */
				continue;

			case 0x03:	/* ^C - break           */
				input[0] = 0;
				i = 0;
				line = 1;
				done = 1;
				break;

			case 0x5F:
			case 0x08:	/* ^H  - backspace      */
			case 0x7F:	/* DEL - backspace      */
				if (i > 0) {
					puts ("\b \b");
					i--;
				}
				break;
			default:
				if (start) {
					if ((c == 'W') || (c == 'D')
					    || (c == 'M') || (c == 'C')
					    || (c == 'P')) {
						putc (c);
						input[i] = c;
						if (i <= 45)
							i++;
						start = 0;
					}
				} else {
					if ((c >= '0' && c <= '9')
					    || (c >= 'A' && c <= 'F')
					    || (c == 'E') || (c == 'M')
					    || (c == ' ')) {
						putc (c);
						input[i] = c;
						if (i <= 45)
							i++;
						break;
					}
				}
				break;
			}
		}

		for (; i < 49; i++)
			input[i] = 0;

		switch (input[0]) {
		case ('W'):
			/* Line should be w reg value */
			i = 0;
			reg = 0;
			value = 0;
			/* Skip to the next space or end) */
			while ((input[i] != ' ') && (input[i] != 0))
				i++;

			if (input[i] != 0)
				i++;

			/* Are we writing to EEPROM or MAC */
			switch (input[i]) {
			case ('E'):
				what = EEPROM;
				break;
			case ('M'):
				what = MAC;
				break;
			default:
				what = UNKNOWN;
				break;
			}

			/* skip to the next space or end */
			while ((input[i] != ' ') && (input[i] != 0))
				i++;
			if (input[i] != 0)
				i++;

			/* Find register to write into */
			j = 0;
			while ((input[i] != ' ') && (input[i] != 0)) {
				j = input[i] - 0x30;
				if (j >= 0xA) {
					j -= 0x07;
				}
				reg = (reg * 0x10) + j;
				i++;
			}

			while ((input[i] != ' ') && (input[i] != 0))
				i++;

			if (input[i] != 0)
				i++;
			else
				what = UNKNOWN;

			/* Get the value to write */
			j = 0;
			while ((input[i] != ' ') && (input[i] != 0)) {
				j = input[i] - 0x30;
				if (j >= 0xA) {
					j -= 0x07;
				}
				value = (value * 0x10) + j;
				i++;
			}

			switch (what) {
			case 1:
				printf ("Writing EEPROM register %02x with %04x\n", reg, value);
				write_eeprom_reg (&dev, value, reg);
				break;
			case 2:
				printf ("Writing MAC register bank %i, reg %02x with %04x\n", reg >> 4, reg & 0xE, value);
				SMC_SELECT_BANK (&dev, reg >> 4);
				SMC_outw (&dev, value, reg & 0xE);
				break;
			default:
				printf ("Wrong\n");
				break;
			}
			break;
		case ('D'):
			dump_eeprom (&dev);
			break;
		case ('M'):
			dump_reg (&dev);
			break;
		case ('C'):
			copy_from_eeprom (&dev);
			break;
		case ('P'):
			print_macaddr (&dev);
			break;
		default:
			break;
		}

	}

	return (0);
}

void copy_from_eeprom (struct eth_device *dev)
{
	int i;

	SMC_SELECT_BANK (dev, 1);
	SMC_outw (dev, (SMC_inw (dev, CTL_REG) & !CTL_EEPROM_SELECT) |
		CTL_RELOAD, CTL_REG);
	i = 100;
	while ((SMC_inw (dev, CTL_REG) & CTL_RELOAD) && --i)
		udelay (100);
	if (i == 0) {
		printf ("Timeout Refreshing EEPROM registers\n");
	} else {
		printf ("EEPROM contents copied to MAC\n");
	}

}

void print_macaddr (struct eth_device *dev)
{
	int i, j, k, mac[6];

	printf ("Current MAC Address in SMSC91111 ");
	SMC_SELECT_BANK (dev, 1);
	for (i = 0; i < 5; i++) {
		printf ("%02x:", SMC_inb (dev, ADDR0_REG + i));
	}

	printf ("%02x\n", SMC_inb (dev, ADDR0_REG + 5));

	i = 0;
	for (j = 0x20; j < 0x23; j++) {
		k = read_eeprom_reg (dev, j);
		mac[i] = k & 0xFF;
		i++;
		mac[i] = k >> 8;
		i++;
	}

	printf ("Current MAC Address in EEPROM    ");
	for (i = 0; i < 5; i++)
		printf ("%02x:", mac[i]);
	printf ("%02x\n", mac[5]);

}
void dump_eeprom (struct eth_device *dev)
{
	int j, k;

	printf ("IOS2-0    ");
	for (j = 0; j < 8; j++) {
		printf ("%03x     ", j);
	}
	printf ("\n");

	for (k = 0; k < 4; k++) {
		if (k == 0)
			printf ("CONFIG ");
		if (k == 1)
			printf ("BASE   ");
		if ((k == 2) || (k == 3))
			printf ("       ");
		for (j = 0; j < 0x20; j += 4) {
			printf ("%02x:%04x ", j + k,
				read_eeprom_reg (dev, j + k));
		}
		printf ("\n");
	}

	for (j = 0x20; j < 0x40; j++) {
		if ((j & 0x07) == 0)
			printf ("\n");
		printf ("%02x:%04x ", j, read_eeprom_reg (dev, j));
	}
	printf ("\n");

}

int read_eeprom_reg (struct eth_device *dev, int reg)
{
	int timeout;

	SMC_SELECT_BANK (dev, 2);
	SMC_outw (dev, reg, PTR_REG);

	SMC_SELECT_BANK (dev, 1);
	SMC_outw (dev, SMC_inw (dev, CTL_REG) | CTL_EEPROM_SELECT |
		CTL_RELOAD, CTL_REG);
	timeout = 100;
	while ((SMC_inw (dev, CTL_REG) & CTL_RELOAD) && --timeout)
		udelay (100);
	if (timeout == 0) {
		printf ("Timeout Reading EEPROM register %02x\n", reg);
		return 0;
	}

	return SMC_inw (dev, GP_REG);

}

int write_eeprom_reg (struct eth_device *dev, int value, int reg)
{
	int timeout;

	SMC_SELECT_BANK (dev, 2);
	SMC_outw (dev, reg, PTR_REG);

	SMC_SELECT_BANK (dev, 1);
	SMC_outw (dev, value, GP_REG);
	SMC_outw (dev, SMC_inw (dev, CTL_REG) | CTL_EEPROM_SELECT |
		CTL_STORE, CTL_REG);
	timeout = 100;
	while ((SMC_inw (dev, CTL_REG) & CTL_STORE) && --timeout)
		udelay (100);
	if (timeout == 0) {
		printf ("Timeout Writing EEPROM register %02x\n", reg);
		return 0;
	}

	return 1;

}

void dump_reg (struct eth_device *dev)
{
	int i, j;

	printf ("    ");
	for (j = 0; j < 4; j++) {
		printf ("Bank%i ", j);
	}
	printf ("\n");
	for (i = 0; i < 0xF; i += 2) {
		printf ("%02x  ", i);
		for (j = 0; j < 4; j++) {
			SMC_SELECT_BANK (dev, j);
			printf ("%04x  ", SMC_inw (dev, i));
		}
		printf ("\n");
	}
}