summaryrefslogtreecommitdiff
path: root/board/overo/overo.c
blob: b7f85e711b46fed4bed4b35774599d929d382c7a (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
/*
 * Maintainer : Steve Sakoman <steve@sakoman.com>
 *
 * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
 *	Richard Woodruff <r-woodruff2@ti.com>
 *	Syed Mohammed Khasim <khasim@ti.com>
 *	Sunil Kumar <sunilsaini05@gmail.com>
 *	Shashi Ranjan <shashiranjanmca05@gmail.com>
 *
 * (C) Copyright 2004-2008
 * Texas Instruments, <www.ti.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#include <common.h>
#include <dm.h>
#include <ns16550.h>
#include <netdev.h>
#include <twl4030.h>
#include <linux/mtd/nand.h>
#include <asm/io.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/mux.h>
#include <asm/arch/mem.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/mach-types.h>
#include "overo.h"

#ifdef CONFIG_USB_EHCI
#include <usb.h>
#include <asm/ehci-omap.h>
#endif

DECLARE_GLOBAL_DATA_PTR;

#define TWL4030_I2C_BUS			0
#define EXPANSION_EEPROM_I2C_BUS	2
#define EXPANSION_EEPROM_I2C_ADDRESS	0x51

#define GUMSTIX_EMPTY_EEPROM		0x0

#define GUMSTIX_SUMMIT			0x01000200
#define GUMSTIX_TOBI			0x02000200
#define GUMSTIX_TOBI_DUO		0x03000200
#define GUMSTIX_PALO35			0x04000200
#define GUMSTIX_PALO43			0x05000200
#define GUMSTIX_CHESTNUT43		0x06000200
#define GUMSTIX_PINTO			0x07000200
#define GUMSTIX_GALLOP43		0x08000200
#define GUMSTIX_ALTO35			0x09000200
#define GUMSTIX_STAGECOACH		0x0A000200
#define GUMSTIX_THUMBO			0x0B000200
#define GUMSTIX_TURTLECORE		0x0C000200
#define GUMSTIX_ARBOR43C		0x0D000200

#define ETTUS_USRP_E			0x01000300

#define GUMSTIX_NO_EEPROM		0xffffffff

static struct {
	unsigned int device_vendor;
	unsigned char revision;
	unsigned char content;
	char fab_revision[8];
	char env_var[16];
	char env_setting[64];
} expansion_config = {0x0};

static const struct ns16550_platdata overo_serial = {
	OMAP34XX_UART3,
	2,
	V_NS16550_CLK
};

U_BOOT_DEVICE(overo_uart) = {
	"serial_omap",
	&overo_serial
};

/*
 * Routine: board_init
 * Description: Early hardware init.
 */
int board_init(void)
{
	gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
	/* board id for Linux */
	gd->bd->bi_arch_number = MACH_TYPE_OVERO;
	/* boot param addr */
	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);

	return 0;
}

/*
 * Routine: get_board_revision
 * Description: Returns the board revision
 */
int get_board_revision(void)
{
	int revision;

#ifdef CONFIG_SYS_I2C_OMAP34XX
	unsigned char data;

	/* board revisions <= R2410 connect 4030 irq_1 to gpio112             */
	/* these boards should return a revision number of 0                  */
	/* the code below forces a 4030 RTC irq to ensure that gpio112 is low */
	i2c_set_bus_num(TWL4030_I2C_BUS);
	data = 0x01;
	i2c_write(0x4B, 0x29, 1, &data, 1);
	data = 0x0c;
	i2c_write(0x4B, 0x2b, 1, &data, 1);
	i2c_read(0x4B, 0x2a, 1, &data, 1);
#endif

	if (!gpio_request(112, "") &&
	    !gpio_request(113, "") &&
	    !gpio_request(115, "")) {

		gpio_direction_input(112);
		gpio_direction_input(113);
		gpio_direction_input(115);

		revision = gpio_get_value(115) << 2 |
			   gpio_get_value(113) << 1 |
			   gpio_get_value(112);
	} else {
		puts("Error: unable to acquire board revision GPIOs\n");
		revision = -1;
	}

	return revision;
}

#ifdef CONFIG_SPL_BUILD
/*
 * Routine: get_board_mem_timings
 * Description: If we use SPL then there is no x-loader nor config header
 * so we have to setup the DDR timings ourself on both banks.
 */
void get_board_mem_timings(struct board_sdrc_timings *timings)
{
	timings->mr = MICRON_V_MR_165;
	switch (get_board_revision()) {
	case REVISION_0: /* Micron 1286MB/256MB, 1/2 banks of 128MB */
		timings->mcfg = MICRON_V_MCFG_165(128 << 20);
		timings->ctrla = MICRON_V_ACTIMA_165;
		timings->ctrlb = MICRON_V_ACTIMB_165;
		timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
		break;
	case REVISION_1: /* Micron 256MB/512MB, 1/2 banks of 256MB */
	case REVISION_4:
		timings->mcfg = MICRON_V_MCFG_200(256 << 20);
		timings->ctrla = MICRON_V_ACTIMA_200;
		timings->ctrlb = MICRON_V_ACTIMB_200;
		timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
		break;
	case REVISION_2: /* Hynix 256MB/512MB, 1/2 banks of 256MB */
		timings->mcfg = HYNIX_V_MCFG_200(256 << 20);
		timings->ctrla = HYNIX_V_ACTIMA_200;
		timings->ctrlb = HYNIX_V_ACTIMB_200;
		timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
		break;
	case REVISION_3: /* Micron 512MB/1024MB, 1/2 banks of 512MB */
		timings->mcfg = MCFG(512 << 20, 15);
		timings->ctrla = MICRON_V_ACTIMA_200;
		timings->ctrlb = MICRON_V_ACTIMB_200;
		timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
		break;
	default:
		timings->mcfg = MICRON_V_MCFG_165(128 << 20);
		timings->ctrla = MICRON_V_ACTIMA_165;
		timings->ctrlb = MICRON_V_ACTIMB_165;
		timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
	}
}
#endif

/*
 * Routine: get_sdio2_config
 * Description: Return information about the wifi module connection
 *              Returns 0 if the module connects though a level translator
 *              Returns 1 if the module connects directly
 */
int get_sdio2_config(void)
{
	int sdio_direct;

	if (!gpio_request(130, "") && !gpio_request(139, "")) {

		gpio_direction_output(130, 0);
		gpio_direction_input(139);

		sdio_direct = 1;
		gpio_set_value(130, 0);
		if (gpio_get_value(139) == 0) {
			gpio_set_value(130, 1);
			if (gpio_get_value(139) == 1)
				sdio_direct = 0;
		}

		gpio_direction_input(130);
	} else {
		puts("Error: unable to acquire sdio2 clk GPIOs\n");
		sdio_direct = -1;
	}

	return sdio_direct;
}

/*
 * Routine: get_expansion_id
 * Description: This function checks for expansion board by checking I2C
 *		bus 2 for the availability of an AT24C01B serial EEPROM.
 *		returns the device_vendor field from the EEPROM
 */
unsigned int get_expansion_id(void)
{
	if (expansion_config.device_vendor != 0x0)
		return expansion_config.device_vendor;

	i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);

	/* return GUMSTIX_NO_EEPROM if eeprom doesn't respond */
	if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
		i2c_set_bus_num(TWL4030_I2C_BUS);
		return GUMSTIX_NO_EEPROM;
	}

	/* read configuration data */
	i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
		 sizeof(expansion_config));

	i2c_set_bus_num(TWL4030_I2C_BUS);

	return expansion_config.device_vendor;
}

/*
 * Routine: misc_init_r
 * Description: Configure board specific parts
 */
int misc_init_r(void)
{
	unsigned int expansion_id;

	twl4030_power_init();
	twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);

	printf("Board revision: %d\n", get_board_revision());

	switch (get_sdio2_config()) {
	case 0:
		puts("Tranceiver detected on mmc2\n");
		MUX_OVERO_SDIO2_TRANSCEIVER();
		break;
	case 1:
		puts("Direct connection on mmc2\n");
		MUX_OVERO_SDIO2_DIRECT();
		break;
	default:
		puts("Unable to detect mmc2 connection type\n");
	}

	expansion_id = get_expansion_id();
	switch (expansion_id) {
	case GUMSTIX_SUMMIT:
		printf("Recognized Summit expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		setenv("defaultdisplay", "dvi");
		setenv("expansionname", "summit");
		break;
	case GUMSTIX_TOBI:
		printf("Recognized Tobi expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		setenv("defaultdisplay", "dvi");
		setenv("expansionname", "tobi");
		break;
	case GUMSTIX_TOBI_DUO:
		printf("Recognized Tobi Duo expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		break;
	case GUMSTIX_PALO35:
		printf("Recognized Palo35 expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		setenv("defaultdisplay", "lcd35");
		break;
	case GUMSTIX_PALO43:
		printf("Recognized Palo43 expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		setenv("defaultdisplay", "lcd43");
		setenv("expansionname", "palo43");
		break;
	case GUMSTIX_CHESTNUT43:
		printf("Recognized Chestnut43 expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		setenv("defaultdisplay", "lcd43");
		setenv("expansionname", "chestnut43");
		break;
	case GUMSTIX_PINTO:
		printf("Recognized Pinto expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		break;
	case GUMSTIX_GALLOP43:
		printf("Recognized Gallop43 expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		setenv("defaultdisplay", "lcd43");
		setenv("expansionname", "gallop43");
		break;
	case GUMSTIX_ALTO35:
		printf("Recognized Alto35 expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		MUX_ALTO35();
		setenv("defaultdisplay", "lcd35");
		setenv("expansionname", "alto35");
		break;
	case GUMSTIX_STAGECOACH:
		printf("Recognized Stagecoach expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		break;
	case GUMSTIX_THUMBO:
		printf("Recognized Thumbo expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		break;
	case GUMSTIX_TURTLECORE:
		printf("Recognized Turtlecore expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		break;
	case GUMSTIX_ARBOR43C:
		printf("Recognized Arbor43C expansion board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		MUX_ARBOR43C();
		setenv("defaultdisplay", "lcd43");
		break;
	case ETTUS_USRP_E:
		printf("Recognized Ettus Research USRP-E (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_GUMSTIX();
		MUX_USRP_E();
		setenv("defaultdisplay", "dvi");
		break;
	case GUMSTIX_NO_EEPROM:
	case GUMSTIX_EMPTY_EEPROM:
		puts("No or empty EEPROM on expansion board\n");
		MUX_GUMSTIX();
		setenv("expansionname", "tobi");
		break;
	default:
		printf("Unrecognized expansion board 0x%08x\n", expansion_id);
		break;
	}

	if (expansion_config.content == 1)
		setenv(expansion_config.env_var, expansion_config.env_setting);

	dieid_num_r();

	if (get_cpu_family() == CPU_OMAP34XX)
		setenv("boardname", "overo");
	else
		setenv("boardname", "overo-storm");

	return 0;
}

/*
 * Routine: set_muxconf_regs
 * Description: Setting up the configuration Mux registers specific to the
 *		hardware. Many pins need to be moved from protect to primary
 *		mode.
 */
void set_muxconf_regs(void)
{
	MUX_OVERO();
}

#if defined(CONFIG_CMD_NET) && !defined(CONFIG_SPL_BUILD)
/* GPMC definitions for LAN9221 chips on Tobi expansion boards */
static const u32 gpmc_lan_config[] = {
	NET_LAN9221_GPMC_CONFIG1,
	NET_LAN9221_GPMC_CONFIG2,
	NET_LAN9221_GPMC_CONFIG3,
	NET_LAN9221_GPMC_CONFIG4,
	NET_LAN9221_GPMC_CONFIG5,
	NET_LAN9221_GPMC_CONFIG6,
	/*CONFIG7- computed as params */
};

/*
 * Routine: setup_net_chip
 * Description: Setting up the configuration GPMC registers specific to the
 *	      Ethernet hardware.
 */
static void setup_net_chip(void)
{
	struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;

	/* Enable off mode for NWE in PADCONF_GPMC_NWE register */
	writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
	/* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
	writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
	/* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
	writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
		&ctrl_base->gpmc_nadv_ale);
}

/*
 * Routine: reset_net_chip
 * Description: Reset the Ethernet hardware.
 */
static void reset_net_chip(void)
{
	/* Make GPIO 64 as output pin and send a magic pulse through it */
	if (!gpio_request(64, "")) {
		gpio_direction_output(64, 0);
		gpio_set_value(64, 1);
		udelay(1);
		gpio_set_value(64, 0);
		udelay(1);
		gpio_set_value(64, 1);
	}
}

int board_eth_init(bd_t *bis)
{
	unsigned int expansion_id;
	int rc = 0;

#ifdef CONFIG_SMC911X
	expansion_id = get_expansion_id();
	switch (expansion_id) {
	case GUMSTIX_TOBI_DUO:
		/* second lan chip */
		enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[4],
				      0x2B000000, GPMC_SIZE_16M);
		/* no break */
	case GUMSTIX_TOBI:
	case GUMSTIX_CHESTNUT43:
	case GUMSTIX_STAGECOACH:
	case GUMSTIX_NO_EEPROM:
	case GUMSTIX_EMPTY_EEPROM:
		/* first lan chip */
		enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5],
				      0x2C000000, GPMC_SIZE_16M);

		setup_net_chip();
		reset_net_chip();

		rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
		break;
	default:
		break;
	}
#endif

	return rc;
}
#endif

#if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
int board_mmc_init(bd_t *bis)
{
	return omap_mmc_init(0, 0, 0, -1, -1);
}
#endif

#if defined(CONFIG_GENERIC_MMC)
void board_mmc_power_init(void)
{
	twl4030_power_mmc_init(0);
}
#endif

#if defined(CONFIG_USB_EHCI) &&  !defined(CONFIG_SPL_BUILD)
static struct omap_usbhs_board_data usbhs_bdata = {
	.port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
};

#define GUMSTIX_GPIO_USBH_CPEN		168
int ehci_hcd_init(int index, enum usb_init_type init,
		  struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
	/* Enable USB power */
	if (!gpio_request(GUMSTIX_GPIO_USBH_CPEN, "usbh_cpen"))
		gpio_direction_output(GUMSTIX_GPIO_USBH_CPEN, 1);

	return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
}

int ehci_hcd_stop(void)
{
	/* Disable USB power */
	gpio_set_value(GUMSTIX_GPIO_USBH_CPEN, 0);
	gpio_free(GUMSTIX_GPIO_USBH_CPEN);

	return omap_ehci_hcd_stop();
}

#endif /* CONFIG_USB_EHCI */