summaryrefslogtreecommitdiff
path: root/board/hymod/bsp.c
blob: 7ea91e6790c7216292578dce1b1315f81bd4ec82 (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
/*
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, wd@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
 *
 * hacked for Hymod FPGA support by Murray.Jensen@csiro.au, 29-Jan-01
 */

#include <common.h>
#include <command.h>
#include <net.h>
#include <asm/iopin_8260.h>

/*-----------------------------------------------------------------------
 * Board Special Commands: FPGA load/store, EEPROM erase
 */

#if (CONFIG_COMMANDS & CFG_CMD_BSP)

#define LOAD_SUCCESS		0
#define LOAD_FAIL_NOCONF	1
#define LOAD_FAIL_NOINIT	2
#define LOAD_FAIL_NODONE	3

#define STORE_SUCCESS		0

/*
 * Programming the Hymod FPGAs
 *
 * The 8260 io port config table is set up so that the INIT pin is
 * held Low (Open Drain output 0) - this will delay the automatic
 * Power-On config until INIT is released (by making it an input).
 *
 * If the FPGA has been programmed before, then the assertion of PROGRAM
 * will initiate configuration (i.e. it begins clearing the RAM).
 *
 * When the FPGA is ready to receive configuration data (either after
 * releasing INIT after Power-On, or after asserting PROGRAM), it will
 * pull INIT high.
 *
 * Notes from Paul Dunn:
 *
 *  1. program pin should be forced low for >= 300ns
 *     (about 20 bus clock cycles minimum).
 *
 *  2. then wait for init to go high, which signals
 *     that the FPGA has cleared its internal memory
 *     and is ready to load
 *
 *  3. perform load writes of entire config file
 *
 *  4. wait for done to go high, which should be
 *     within a few bus clock cycles. If done has not
 *     gone high after reasonable period, then load
 *     has not worked (wait several ms?)
 */

int
fpga_load (int mezz, uchar *addr, ulong size)
{
	DECLARE_GLOBAL_DATA_PTR;

	hymod_conf_t *cp = &gd->bd->bi_hymod_conf;
	xlx_info_t *fp;
	xlx_iopins_t *fpgaio;
	volatile uchar *fpgabase;
	volatile uint cnt;
	uchar *eaddr = addr + size;
	int result;

	if (mezz)
		fp = &cp->mezz.xlx[0];
	else
		fp = &cp->main.xlx[0];

	if (!fp->mmap.prog.exists)
		return (LOAD_FAIL_NOCONF);

	fpgabase = (uchar *)fp->mmap.prog.base;
	fpgaio = &fp->iopins;

	/* set enable HIGH if required */
	if (fpgaio->enable_pin.flag)
		iopin_set_high (&fpgaio->enable_pin);

	/* ensure INIT is released (set it to be an input) */
	iopin_set_in (&fpgaio->init_pin);

	/* toggle PROG Low then High (will already be Low after Power-On) */
	iopin_set_low (&fpgaio->prog_pin);
	udelay (1);	/* minimum 300ns - 1usec should do it */
	iopin_set_high (&fpgaio->prog_pin);

	/* wait for INIT High */
	cnt = 0;
	while (!iopin_is_high (&fpgaio->init_pin))
		if (++cnt == 10000000) {
			result = LOAD_FAIL_NOINIT;
			goto done;
		}

	/* write configuration data */
	while (addr < eaddr)
		*fpgabase = *addr++;

	/* wait for DONE High */
	cnt = 0;
	while (!iopin_is_high (&fpgaio->done_pin))
		if (++cnt == 100000000) {
			result = LOAD_FAIL_NODONE;
			goto done;
		}

	/* success */
	result = LOAD_SUCCESS;

  done:

	if (fpgaio->enable_pin.flag)
		iopin_set_low (&fpgaio->enable_pin);

	return (result);
}

/* ------------------------------------------------------------------------- */
int
do_fpga (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
	uchar *addr, *save_addr;
	ulong size;
	int mezz, arg, result;

	switch (argc) {

	case 0:
	case 1:
		break;

	case 2:
		if (strcmp (argv[1], "info") == 0) {
			printf ("\nHymod FPGA Info...\n");
			printf ("\t\t\t\tAddress\t\tSize\n");
			printf ("\tMain Configuration:\t0x%08x\t%d\n",
				FPGA_MAIN_CFG_BASE, FPGA_MAIN_CFG_SIZE);
			printf ("\tMain Register:\t\t0x%08x\t%d\n",
				FPGA_MAIN_REG_BASE, FPGA_MAIN_REG_SIZE);
			printf ("\tMain Port:\t\t0x%08x\t%d\n",
				FPGA_MAIN_PORT_BASE, FPGA_MAIN_PORT_SIZE);
			printf ("\tMezz Configuration:\t0x%08x\t%d\n",
				FPGA_MEZZ_CFG_BASE, FPGA_MEZZ_CFG_SIZE);
			return 0;
		}
		break;

	case 3:
		if (strcmp (argv[1], "store") == 0) {
			addr = (uchar *) simple_strtoul (argv[2], NULL, 16);

			save_addr = addr;
#if 0
			/* fpga readback unimplemented */
			while (more readback data)
				*addr++ = *fpga;
			result = error ? STORE_FAIL_XXX : STORE_SUCCESS;
#else
			result = STORE_SUCCESS;
#endif

			if (result == STORE_SUCCESS) {
				printf ("SUCCEEDED (%d bytes)\n",
					addr - save_addr);
				return 0;
			} else
				printf ("FAILED (%d bytes)\n",
					addr - save_addr);
			return 1;
		}
		break;

	case 4:
		if (strcmp (argv[1], "tftp") == 0) {
			copy_filename (BootFile, argv[2], sizeof (BootFile));
			load_addr = simple_strtoul (argv[3], NULL, 16);
			NetBootFileXferSize = 0;

			if (NetLoop (TFTP) <= 0) {
				printf ("tftp transfer failed - aborting "
					"fgpa load\n");
				return 1;
			}

			if (NetBootFileXferSize == 0) {
				printf ("can't determine file size - "
					"aborting fpga load\n");
				return 1;
			}

			printf ("File transfer succeeded - "
				"beginning fpga load...");

			result = fpga_load (0, (uchar *) load_addr,
				NetBootFileXferSize);

			if (result == LOAD_SUCCESS) {
				printf ("SUCCEEDED\n");
				return 0;
			} else if (result == LOAD_FAIL_NOCONF)
				printf ("FAILED (no CONF)\n");
			else if (result == LOAD_FAIL_NOINIT)
				printf ("FAILED (no INIT)\n");
			else
				printf ("FAILED (no DONE)\n");
			return 1;

		}
		/* fall through ... */

	case 5:
		if (strcmp (argv[1], "load") == 0) {
			if (argc == 5) {
				if (strcmp (argv[2], "main") == 0)
					mezz = 0;
				else if (strcmp (argv[2], "mezz") == 0)
					mezz = 1;
				else {
					printf ("FPGA type must be either "
						"`main' or `mezz'\n");
					return 1;
				}
				arg = 3;
			} else {
				mezz = 0;
				arg = 2;
			}

			addr = (uchar *) simple_strtoul (argv[arg++], NULL, 16);
			size = (ulong) simple_strtoul (argv[arg], NULL, 16);

			result = fpga_load (mezz, addr, size);

			if (result == LOAD_SUCCESS) {
				printf ("SUCCEEDED\n");
				return 0;
			} else if (result == LOAD_FAIL_NOCONF)
				printf ("FAILED (no CONF)\n");
			else if (result == LOAD_FAIL_NOINIT)
				printf ("FAILED (no INIT)\n");
			else
				printf ("FAILED (no DONE)\n");
			return 1;
		}
		break;

	default:
		break;
	}

	printf ("Usage:\n%s\n", cmdtp->usage);
	return 1;
}
cmd_tbl_t U_BOOT_CMD(fpga) = MK_CMD_ENTRY(
	"fpga",	6,	1,	do_fpga,
	"fpga    - FPGA sub-system\n",
	"load [type] addr size\n"
	"  - write the configuration data at memory address `addr',\n"
	"    size `size' bytes, into the FPGA of type `type' (either\n"
	"    `main' or `mezz', default `main'). e.g.\n"
	"        `fpga load 100000 7d8f'\n"
	"    loads the main FPGA with config data at address 100000\n"
	"    HEX, size 7d8f HEX (32143 DEC) bytes\n"
	"fpga tftp file addr\n"
	"  - transfers `file' from the tftp server into memory at\n"
	"    address `addr', then writes the entire file contents\n"
	"    into the main FPGA\n"
	"fpga store addr\n"
	"  - read configuration data from the main FPGA (the mezz\n"
	"    FPGA is write-only), into address `addr'. There must be\n"
	"    enough memory available at `addr' to hold all the config\n"
	"    data - the size of which is determined by VC:???\n"
	"fpga info\n"
	"  - print information about the Hymod FPGA, namely the\n"
	"    memory addresses at which the four FPGA local bus\n"
	"    address spaces appear in the physical address space\n"
);
/* ------------------------------------------------------------------------- */
int
do_eecl (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
	uchar data[HYMOD_EEPROM_SIZE];
	uint addr = CFG_I2C_EEPROM_ADDR;

	switch (argc) {

	case 1:
		addr |= HYMOD_EEOFF_MAIN;
		break;

	case 2:
		if (strcmp (argv[1], "main") == 0) {
			addr |= HYMOD_EEOFF_MAIN;
			break;
		}
		if (strcmp (argv[1], "mezz") == 0) {
			addr |= HYMOD_EEOFF_MEZZ;
			break;
		}
		/* fall through ... */

	default:
		printf ("Usage:\n%s\n", cmdtp->usage);
		return 1;
	}

	memset (data, 0, HYMOD_EEPROM_SIZE);

	eeprom_write (addr, 0, data, HYMOD_EEPROM_SIZE);

	return 0;
}
cmd_tbl_t U_BOOT_CMD(eec) = MK_CMD_ENTRY(
	"eeclear",	1,	0,	do_eecl,
	"eeclear - Clear the eeprom on a Hymod board \n",
	"[type]\n"
	"  - write zeroes into the EEPROM on the board of type `type'\n"
	"    (`type' is either `main' or `mezz' - default `main')\n"
	"    Note: the EEPROM write enable jumper must be installed\n"
);

/* ------------------------------------------------------------------------- */

int
do_htest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
#if 0
	int rc;
#endif
#ifdef CONFIG_ETHER_LOOPBACK_TEST
	extern void eth_loopback_test (void);
#endif /* CONFIG_ETHER_LOOPBACK_TEST */

	printf ("HYMOD tests - ensure loopbacks etc. are connected\n\n");

#if 0
	/* Load FPGA with test program */

	printf ("Loading test FPGA program ...");

	rc = fpga_load (0, test_bitfile, sizeof (test_bitfile));

	switch (rc) {

	case LOAD_SUCCESS:
		printf (" SUCCEEDED\n");
		break;

	case LOAD_FAIL_NOCONF:
		printf (" FAILED (no configuration space defined)\n");
		return 1;

	case LOAD_FAIL_NOINIT:
		printf (" FAILED (timeout - no INIT signal seen)\n");
		return 1;

	case LOAD_FAIL_NODONE:
		printf (" FAILED (timeout - no DONE signal seen)\n");
		return 1;

	default:
		printf (" FAILED (unknown return code from fpga_load\n");
		return 1;
	}

	/* run Local Bus <=> Xilinx tests */

	/* tell Xilinx to run ZBT Ram, High Speed serial and Mezzanine tests */

	/* run SDRAM test */
#endif

#ifdef CONFIG_ETHER_LOOPBACK_TEST
	/* run Ethernet test */
	eth_loopback_test ();
#endif /* CONFIG_ETHER_LOOPBACK_TEST */

	return 0;
}

#endif	/* CFG_CMD_BSP */

/* ------------------------------------------------------------------------- */