summaryrefslogtreecommitdiff
path: root/board/ti/beagle/beagle.c
blob: 8b07eef551ff52ec713e3f804310304b1d35b2bc (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
/*
 * (C) Copyright 2004-2011
 * Texas Instruments, <www.ti.com>
 *
 * Author :
 *	Sunil Kumar <sunilsaini05@gmail.com>
 *	Shashi Ranjan <shashiranjanmca05@gmail.com>
 *
 * Derived from Beagle Board and 3430 SDP code by
 *	Richard Woodruff <r-woodruff2@ti.com>
 *	Syed Mohammed Khasim <khasim@ti.com>
 *
 *
 * 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>
#ifdef CONFIG_STATUS_LED
#include <status_led.h>
#endif
#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 "beagle.h"
#include <command.h>

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

#define pr_debug(fmt, args...) debug(fmt, ##args)

#define TWL4030_I2C_BUS			0
#define EXPANSION_EEPROM_I2C_BUS	1
#define EXPANSION_EEPROM_I2C_ADDRESS	0x50

#define TINCANTOOLS_ZIPPY		0x01000100
#define TINCANTOOLS_ZIPPY2		0x02000100
#define TINCANTOOLS_TRAINER		0x04000100
#define TINCANTOOLS_SHOWDOG		0x03000100
#define KBADC_BEAGLEFPGA		0x01000600
#define LW_BEAGLETOUCH			0x01000700
#define BRAINMUX_LCDOG			0x01000800
#define BRAINMUX_LCDOGTOUCH		0x02000800
#define BBTOYS_WIFI			0x01000B00
#define BBTOYS_VGA			0x02000B00
#define BBTOYS_LCD			0x03000B00
#define BCT_BRETTL3			0x01000F00
#define BEAGLE_NO_EEPROM		0xffffffff

DECLARE_GLOBAL_DATA_PTR;

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;

/*
 * 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_OMAP3_BEAGLE;
	/* boot param addr */
	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);

#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
	status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
#endif

	return 0;
}

/*
 * Routine: get_board_revision
 * Description: Detect if we are running on a Beagle revision Ax/Bx,
 *		C1/2/3, C4 or xM. This can be done by reading
 *		the level of GPIO173, GPIO172 and GPIO171. This should
 *		result in
 *		GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
 *		GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
 *		GPIO173, GPIO172, GPIO171: 1 0 1 => C4
 *		GPIO173, GPIO172, GPIO171: 0 0 0 => xM
 */
int get_board_revision(void)
{
	int revision;

	if (!gpio_request(171, "") &&
	    !gpio_request(172, "") &&
	    !gpio_request(173, "")) {

		gpio_direction_input(171);
		gpio_direction_input(172);
		gpio_direction_input(173);

		revision = gpio_get_value(173) << 2 |
			   gpio_get_value(172) << 1 |
			   gpio_get_value(171);
	} else {
		printf("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(u32 *mcfg, u32 *ctrla, u32 *ctrlb, u32 *rfr_ctrl,
		u32 *mr)
{
	int pop_mfr, pop_id;

	/*
	 * We need to identify what PoP memory is on the board so that
	 * we know what timings to use.  If we can't identify it then
	 * we know it's an xM.  To map the ID values please see nand_ids.c
	 */
	identify_nand_chip(&pop_mfr, &pop_id);

	*mr = MICRON_V_MR_165;
	switch (get_board_revision()) {
	case REVISION_C4:
		if (pop_mfr == NAND_MFR_STMICRO && pop_id == 0xba) {
			/* 512MB DDR */
			*mcfg = NUMONYX_V_MCFG_165(512 << 20);
			*ctrla = NUMONYX_V_ACTIMA_165;
			*ctrlb = NUMONYX_V_ACTIMB_165;
			*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
			break;
		} else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xba) {
			/* Beagleboard Rev C4, 512MB Nand/256MB DDR*/
			*mcfg = MICRON_V_MCFG_165(128 << 20);
			*ctrla = MICRON_V_ACTIMA_165;
			*ctrlb = MICRON_V_ACTIMB_165;
			*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
			break;
		} else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xbc) {
			/* Beagleboard Rev C5, 256MB DDR */
			*mcfg = MICRON_V_MCFG_200(256 << 20);
			*ctrla = MICRON_V_ACTIMA_200;
			*ctrlb = MICRON_V_ACTIMB_200;
			*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
			break;
		}
	case REVISION_XM_A:
	case REVISION_XM_B:
	case REVISION_XM_C:
		if (pop_mfr == 0) {
			/* 256MB DDR */
			*mcfg = MICRON_V_MCFG_200(256 << 20);
			*ctrla = MICRON_V_ACTIMA_200;
			*ctrlb = MICRON_V_ACTIMB_200;
			*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
		} else {
			/* 512MB DDR */
			*mcfg = NUMONYX_V_MCFG_165(512 << 20);
			*ctrla = NUMONYX_V_ACTIMA_165;
			*ctrlb = NUMONYX_V_ACTIMB_165;
			*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
		}
		break;
	default:
		/* Assume 128MB and Micron/165MHz timings to be safe */
		*mcfg = MICRON_V_MCFG_165(128 << 20);
		*ctrla = MICRON_V_ACTIMA_165;
		*ctrlb = MICRON_V_ACTIMB_165;
		*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
	}
}
#endif

/*
 * Routine: get_expansion_id
 * Description: This function checks for expansion board by checking I2C
 *		bus 1 for the availability of an AT24C01B serial EEPROM.
 *		returns the device_vendor field from the EEPROM
 */
unsigned int get_expansion_id(void)
{
	i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);

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

/*
 * Configure DSS to display background color on DVID
 * Configure VENC to display color bar on S-Video
 */
void beagle_display_init(void)
{
	omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
	switch (get_board_revision()) {
	case REVISION_AXBX:
	case REVISION_CX:
	case REVISION_C4:
		omap3_dss_panel_config(&dvid_cfg);
		break;
	case REVISION_XM_A:
	case REVISION_XM_B:
	case REVISION_XM_C:
	default:
		omap3_dss_panel_config(&dvid_cfg_xm);
		break;
	}
}

/*
 * Enable DVI power
 */
static void beagle_dvi_pup(void)
{
	uchar val;

	switch (get_board_revision()) {
	case REVISION_AXBX:
	case REVISION_CX:
	case REVISION_C4:
	case REVISION_XM_A:
		gpio_request(170, "");
		gpio_direction_output(170, 0);
		gpio_set_value(170, 1);
		break;
	case REVISION_XM_B:
	case REVISION_XM_C:
	default:
		#define GPIODATADIR1 (TWL4030_BASEADD_GPIO+3)
		#define GPIODATAOUT1 (TWL4030_BASEADD_GPIO+6)

		i2c_read(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
		val |= 4;
		i2c_write(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);

		i2c_read(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
		val |= 4;
		i2c_write(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
		break;
	}
}

/*
 * Routine: misc_init_r
 * Description: Configure board specific parts
 */
int misc_init_r(void)
{
	struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
	struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
	struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;

	/* Enable i2c2 pullup resisters */
	writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);

	switch (get_board_revision()) {
	case REVISION_AXBX:
		printf("Beagle Rev Ax/Bx\n");
		setenv("beaglerev", "AxBx");
		break;
	case REVISION_CX:
		printf("Beagle Rev C1/C2/C3\n");
		setenv("beaglerev", "Cx");
		MUX_BEAGLE_C();
		break;
	case REVISION_C4:
		printf("Beagle Rev C4\n");
		setenv("beaglerev", "C4");
		MUX_BEAGLE_C();
		/* Set VAUX2 to 1.8V for EHCI PHY */
		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
					TWL4030_PM_RECEIVER_DEV_GRP_P1);
		break;
	case REVISION_XM_A:
		printf("Beagle xM Rev A\n");
		setenv("beaglerev", "xMA");
		MUX_BEAGLE_XM();
		/* Set VAUX2 to 1.8V for EHCI PHY */
		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
					TWL4030_PM_RECEIVER_DEV_GRP_P1);
		break;
	case REVISION_XM_B:
		printf("Beagle xM Rev B\n");
		setenv("beaglerev", "xMB");
		MUX_BEAGLE_XM();
		/* Set VAUX2 to 1.8V for EHCI PHY */
		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
					TWL4030_PM_RECEIVER_DEV_GRP_P1);
		break;
	case REVISION_XM_C:
		printf("Beagle xM Rev C\n");
		setenv("beaglerev", "xMC");
		MUX_BEAGLE_XM();
		/* Set VAUX2 to 1.8V for EHCI PHY */
		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
					TWL4030_PM_RECEIVER_DEV_GRP_P1);
		break;
	default:
		printf("Beagle unknown 0x%02x\n", get_board_revision());
		MUX_BEAGLE_XM();
		/* Set VAUX2 to 1.8V for EHCI PHY */
		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
					TWL4030_PM_RECEIVER_DEV_GRP_P1);
	}

	switch (get_expansion_id()) {
	case TINCANTOOLS_ZIPPY:
		printf("Recognized Tincantools Zippy board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_TINCANTOOLS_ZIPPY();
		setenv("buddy", "zippy");
		break;
	case TINCANTOOLS_ZIPPY2:
		printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_TINCANTOOLS_ZIPPY();
		setenv("buddy", "zippy2");
		break;
	case TINCANTOOLS_TRAINER:
		printf("Recognized Tincantools Trainer board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		MUX_TINCANTOOLS_ZIPPY();
		MUX_TINCANTOOLS_TRAINER();
		setenv("buddy", "trainer");
		break;
	case TINCANTOOLS_SHOWDOG:
		printf("Recognized Tincantools Showdow board (rev %d %s)\n",
			expansion_config.revision,
			expansion_config.fab_revision);
		/* Place holder for DSS2 definition for showdog lcd */
		setenv("defaultdisplay", "showdoglcd");
		setenv("buddy", "showdog");
		break;
	case KBADC_BEAGLEFPGA:
		printf("Recognized KBADC Beagle FPGA board\n");
		MUX_KBADC_BEAGLEFPGA();
		setenv("buddy", "beaglefpga");
		break;
	case LW_BEAGLETOUCH:
		printf("Recognized Liquidware BeagleTouch board\n");
		setenv("buddy", "beagletouch");
		break;
	case BRAINMUX_LCDOG:
		printf("Recognized Brainmux LCDog board\n");
		setenv("buddy", "lcdog");
		break;
	case BRAINMUX_LCDOGTOUCH:
		printf("Recognized Brainmux LCDog Touch board\n");
		setenv("buddy", "lcdogtouch");
		break;
	case BBTOYS_WIFI:
		printf("Recognized BeagleBoardToys WiFi board\n");
		MUX_BBTOYS_WIFI()
		setenv("buddy", "bbtoys-wifi");
		break;;
	case BBTOYS_VGA:
		printf("Recognized BeagleBoardToys VGA board\n");
		break;;
	case BBTOYS_LCD:
		printf("Recognized BeagleBoardToys LCD board\n");
		break;;
	case BCT_BRETTL3:
	    printf("Recognized bct electronic GmbH brettl3 board\n");
	    break;
	case BEAGLE_NO_EEPROM:
		printf("No EEPROM on expansion board\n");
		setenv("buddy", "none");
		break;
	default:
		printf("Unrecognized expansion board: %x\n",
			expansion_config.device_vendor);
		setenv("buddy", "unknown");
	}

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

	twl4030_power_init();
	switch (get_board_revision()) {
	case REVISION_XM_A:
	case REVISION_XM_B:
		twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
		break;
	default:
		twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
		break;
	}

	/* Set GPIO states before they are made outputs */
	writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
		&gpio6_base->setdataout);
	writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
		GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);

	/* Configure GPIOs to output */
	writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
	writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
		GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);

	dieid_num_r();

	beagle_dvi_pup();
	beagle_display_init();
	omap3_dss_enable();

	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_BEAGLE();
}

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

#ifdef CONFIG_USB_EHCI
/* Call usb_stop() before starting the kernel */
void show_boot_progress(int val)
{
	if (val == BOOTSTAGE_ID_RUN_OS)
		usb_stop();
}

static struct omap_usbhs_board_data usbhs_bdata = {
	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
};

int ehci_hcd_init(void)
{
	return omap_ehci_hcd_init(&usbhs_bdata);
}

int ehci_hcd_stop(void)
{
	return omap_ehci_hcd_stop();
}

#endif /* CONFIG_USB_EHCI */

#ifndef CONFIG_SPL_BUILD
/*
 * This command returns the status of the user button on beagle xM
 * Input - none
 * Returns - 	1 if button is held down
 *		0 if button is not held down
 */
int do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	int     button = 0;
	int	gpio;

	/*
	 * pass address parameter as argv[0] (aka command name),
	 * and all remaining args
	 */
	switch (get_board_revision()) {
	case REVISION_AXBX:
	case REVISION_CX:
	case REVISION_C4:
		gpio = 7;
		break;
	case REVISION_XM_A:
	case REVISION_XM_B:
	case REVISION_XM_C:
	default:
		gpio = 4;
		break;
	}
	gpio_request(gpio, "");
	gpio_direction_input(gpio);
	printf("The user button is currently ");
	if (gpio_get_value(gpio))
	{
		button = 1;
		printf("PRESSED.\n");
	}
	else
	{
		button = 0;
		printf("NOT pressed.\n");
	}

	return !button;
}

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

U_BOOT_CMD(
	userbutton, CONFIG_SYS_MAXARGS, 1,	do_userbutton,
	"Return the status of the BeagleBoard USER button",
	""
);
#endif