xref: /openbmc/u-boot/board/ti/beagle/beagle.c (revision 0f17f59c)
1 /*
2  * (C) Copyright 2004-2011
3  * Texas Instruments, <www.ti.com>
4  *
5  * Author :
6  *	Sunil Kumar <sunilsaini05@gmail.com>
7  *	Shashi Ranjan <shashiranjanmca05@gmail.com>
8  *
9  * Derived from Beagle Board and 3430 SDP code by
10  *	Richard Woodruff <r-woodruff2@ti.com>
11  *	Syed Mohammed Khasim <khasim@ti.com>
12  *
13  *
14  * See file CREDITS for list of people who contributed to this
15  * project.
16  *
17  * This program is free software; you can redistribute it and/or
18  * modify it under the terms of the GNU General Public License as
19  * published by the Free Software Foundation; either version 2 of
20  * the License, or (at your option) any later version.
21  *
22  * This program is distributed in the hope that it will be useful,
23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
25  * GNU General Public License for more details.
26  *
27  * You should have received a copy of the GNU General Public License
28  * along with this program; if not, write to the Free Software
29  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30  * MA 02111-1307 USA
31  */
32 #include <common.h>
33 #ifdef CONFIG_STATUS_LED
34 #include <status_led.h>
35 #endif
36 #include <twl4030.h>
37 #include <linux/mtd/nand.h>
38 #include <asm/io.h>
39 #include <asm/arch/mmc_host_def.h>
40 #include <asm/arch/mux.h>
41 #include <asm/arch/mem.h>
42 #include <asm/arch/sys_proto.h>
43 #include <asm/gpio.h>
44 #include <asm/mach-types.h>
45 #include <asm/omap_musb.h>
46 #include <asm/errno.h>
47 #include <linux/usb/ch9.h>
48 #include <linux/usb/gadget.h>
49 #include <linux/usb/musb.h>
50 #include "beagle.h"
51 #include <command.h>
52 
53 #ifdef CONFIG_USB_EHCI
54 #include <usb.h>
55 #include <asm/ehci-omap.h>
56 #endif
57 
58 #define TWL4030_I2C_BUS			0
59 #define EXPANSION_EEPROM_I2C_BUS	1
60 #define EXPANSION_EEPROM_I2C_ADDRESS	0x50
61 
62 #define TINCANTOOLS_ZIPPY		0x01000100
63 #define TINCANTOOLS_ZIPPY2		0x02000100
64 #define TINCANTOOLS_TRAINER		0x04000100
65 #define TINCANTOOLS_SHOWDOG		0x03000100
66 #define KBADC_BEAGLEFPGA		0x01000600
67 #define LW_BEAGLETOUCH			0x01000700
68 #define BRAINMUX_LCDOG			0x01000800
69 #define BRAINMUX_LCDOGTOUCH		0x02000800
70 #define BBTOYS_WIFI			0x01000B00
71 #define BBTOYS_VGA			0x02000B00
72 #define BBTOYS_LCD			0x03000B00
73 #define BCT_BRETTL3			0x01000F00
74 #define BCT_BRETTL4			0x02000F00
75 #define BEAGLE_NO_EEPROM		0xffffffff
76 
77 DECLARE_GLOBAL_DATA_PTR;
78 
79 static struct {
80 	unsigned int device_vendor;
81 	unsigned char revision;
82 	unsigned char content;
83 	char fab_revision[8];
84 	char env_var[16];
85 	char env_setting[64];
86 } expansion_config;
87 
88 /*
89  * Routine: board_init
90  * Description: Early hardware init.
91  */
92 int board_init(void)
93 {
94 	gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
95 	/* board id for Linux */
96 	gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
97 	/* boot param addr */
98 	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
99 
100 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
101 	status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
102 #endif
103 
104 	return 0;
105 }
106 
107 /*
108  * Routine: get_board_revision
109  * Description: Detect if we are running on a Beagle revision Ax/Bx,
110  *		C1/2/3, C4 or xM. This can be done by reading
111  *		the level of GPIO173, GPIO172 and GPIO171. This should
112  *		result in
113  *		GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
114  *		GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
115  *		GPIO173, GPIO172, GPIO171: 1 0 1 => C4
116  *		GPIO173, GPIO172, GPIO171: 0 0 0 => xM
117  */
118 static int get_board_revision(void)
119 {
120 	int revision;
121 
122 	if (!gpio_request(171, "") &&
123 	    !gpio_request(172, "") &&
124 	    !gpio_request(173, "")) {
125 
126 		gpio_direction_input(171);
127 		gpio_direction_input(172);
128 		gpio_direction_input(173);
129 
130 		revision = gpio_get_value(173) << 2 |
131 			   gpio_get_value(172) << 1 |
132 			   gpio_get_value(171);
133 	} else {
134 		printf("Error: unable to acquire board revision GPIOs\n");
135 		revision = -1;
136 	}
137 
138 	return revision;
139 }
140 
141 #ifdef CONFIG_SPL_BUILD
142 /*
143  * Routine: get_board_mem_timings
144  * Description: If we use SPL then there is no x-loader nor config header
145  * so we have to setup the DDR timings ourself on both banks.
146  */
147 void get_board_mem_timings(struct board_sdrc_timings *timings)
148 {
149 	int pop_mfr, pop_id;
150 
151 	/*
152 	 * We need to identify what PoP memory is on the board so that
153 	 * we know what timings to use.  If we can't identify it then
154 	 * we know it's an xM.  To map the ID values please see nand_ids.c
155 	 */
156 	identify_nand_chip(&pop_mfr, &pop_id);
157 
158 	timings->mr = MICRON_V_MR_165;
159 	switch (get_board_revision()) {
160 	case REVISION_C4:
161 		if (pop_mfr == NAND_MFR_STMICRO && pop_id == 0xba) {
162 			/* 512MB DDR */
163 			timings->mcfg = NUMONYX_V_MCFG_165(512 << 20);
164 			timings->ctrla = NUMONYX_V_ACTIMA_165;
165 			timings->ctrlb = NUMONYX_V_ACTIMB_165;
166 			timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
167 			break;
168 		} else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xba) {
169 			/* Beagleboard Rev C4, 512MB Nand/256MB DDR*/
170 			timings->mcfg = MICRON_V_MCFG_165(128 << 20);
171 			timings->ctrla = MICRON_V_ACTIMA_165;
172 			timings->ctrlb = MICRON_V_ACTIMB_165;
173 			timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
174 			break;
175 		} else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xbc) {
176 			/* Beagleboard Rev C5, 256MB DDR */
177 			timings->mcfg = MICRON_V_MCFG_200(256 << 20);
178 			timings->ctrla = MICRON_V_ACTIMA_200;
179 			timings->ctrlb = MICRON_V_ACTIMB_200;
180 			timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
181 			break;
182 		}
183 	case REVISION_XM_A:
184 	case REVISION_XM_B:
185 	case REVISION_XM_C:
186 		if (pop_mfr == 0) {
187 			/* 256MB DDR */
188 			timings->mcfg = MICRON_V_MCFG_200(256 << 20);
189 			timings->ctrla = MICRON_V_ACTIMA_200;
190 			timings->ctrlb = MICRON_V_ACTIMB_200;
191 			timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
192 		} else {
193 			/* 512MB DDR */
194 			timings->mcfg = NUMONYX_V_MCFG_165(512 << 20);
195 			timings->ctrla = NUMONYX_V_ACTIMA_165;
196 			timings->ctrlb = NUMONYX_V_ACTIMB_165;
197 			timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
198 		}
199 		break;
200 	default:
201 		/* Assume 128MB and Micron/165MHz timings to be safe */
202 		timings->mcfg = MICRON_V_MCFG_165(128 << 20);
203 		timings->ctrla = MICRON_V_ACTIMA_165;
204 		timings->ctrlb = MICRON_V_ACTIMB_165;
205 		timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
206 	}
207 }
208 #endif
209 
210 /*
211  * Routine: get_expansion_id
212  * Description: This function checks for expansion board by checking I2C
213  *		bus 1 for the availability of an AT24C01B serial EEPROM.
214  *		returns the device_vendor field from the EEPROM
215  */
216 static unsigned int get_expansion_id(void)
217 {
218 	i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
219 
220 	/* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
221 	if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
222 		i2c_set_bus_num(TWL4030_I2C_BUS);
223 		return BEAGLE_NO_EEPROM;
224 	}
225 
226 	/* read configuration data */
227 	i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
228 		 sizeof(expansion_config));
229 
230 	i2c_set_bus_num(TWL4030_I2C_BUS);
231 
232 	return expansion_config.device_vendor;
233 }
234 
235 #ifdef CONFIG_VIDEO_OMAP3
236 /*
237  * Configure DSS to display background color on DVID
238  * Configure VENC to display color bar on S-Video
239  */
240 static void beagle_display_init(void)
241 {
242 	omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
243 	switch (get_board_revision()) {
244 	case REVISION_AXBX:
245 	case REVISION_CX:
246 	case REVISION_C4:
247 		omap3_dss_panel_config(&dvid_cfg);
248 		break;
249 	case REVISION_XM_A:
250 	case REVISION_XM_B:
251 	case REVISION_XM_C:
252 	default:
253 		omap3_dss_panel_config(&dvid_cfg_xm);
254 		break;
255 	}
256 }
257 
258 /*
259  * Enable DVI power
260  */
261 static void beagle_dvi_pup(void)
262 {
263 	uchar val;
264 
265 	switch (get_board_revision()) {
266 	case REVISION_AXBX:
267 	case REVISION_CX:
268 	case REVISION_C4:
269 	case REVISION_XM_A:
270 		gpio_request(170, "");
271 		gpio_direction_output(170, 0);
272 		gpio_set_value(170, 1);
273 		break;
274 	case REVISION_XM_B:
275 	case REVISION_XM_C:
276 	default:
277 		#define GPIODATADIR1 (TWL4030_BASEADD_GPIO+3)
278 		#define GPIODATAOUT1 (TWL4030_BASEADD_GPIO+6)
279 
280 		i2c_read(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
281 		val |= 4;
282 		i2c_write(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
283 
284 		i2c_read(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
285 		val |= 4;
286 		i2c_write(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
287 		break;
288 	}
289 }
290 #endif
291 
292 #ifdef CONFIG_USB_MUSB_OMAP2PLUS
293 static struct musb_hdrc_config musb_config = {
294 	.multipoint     = 1,
295 	.dyn_fifo       = 1,
296 	.num_eps        = 16,
297 	.ram_bits       = 12,
298 };
299 
300 static struct omap_musb_board_data musb_board_data = {
301 	.interface_type	= MUSB_INTERFACE_ULPI,
302 };
303 
304 static struct musb_hdrc_platform_data musb_plat = {
305 #if defined(CONFIG_MUSB_HOST)
306 	.mode           = MUSB_HOST,
307 #elif defined(CONFIG_MUSB_GADGET)
308 	.mode		= MUSB_PERIPHERAL,
309 #else
310 #error "Please define either CONFIG_MUSB_HOST or CONFIG_MUSB_GADGET"
311 #endif
312 	.config         = &musb_config,
313 	.power          = 100,
314 	.platform_ops	= &omap2430_ops,
315 	.board_data	= &musb_board_data,
316 };
317 #endif
318 
319 /*
320  * Routine: misc_init_r
321  * Description: Configure board specific parts
322  */
323 int misc_init_r(void)
324 {
325 	struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
326 	struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
327 	struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
328 
329 	/* Enable i2c2 pullup resisters */
330 	writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);
331 
332 	switch (get_board_revision()) {
333 	case REVISION_AXBX:
334 		printf("Beagle Rev Ax/Bx\n");
335 		setenv("beaglerev", "AxBx");
336 		break;
337 	case REVISION_CX:
338 		printf("Beagle Rev C1/C2/C3\n");
339 		setenv("beaglerev", "Cx");
340 		MUX_BEAGLE_C();
341 		break;
342 	case REVISION_C4:
343 		printf("Beagle Rev C4\n");
344 		setenv("beaglerev", "C4");
345 		MUX_BEAGLE_C();
346 		/* Set VAUX2 to 1.8V for EHCI PHY */
347 		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
348 					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
349 					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
350 					TWL4030_PM_RECEIVER_DEV_GRP_P1);
351 		break;
352 	case REVISION_XM_A:
353 		printf("Beagle xM Rev A\n");
354 		setenv("beaglerev", "xMA");
355 		MUX_BEAGLE_XM();
356 		/* Set VAUX2 to 1.8V for EHCI PHY */
357 		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
358 					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
359 					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
360 					TWL4030_PM_RECEIVER_DEV_GRP_P1);
361 		break;
362 	case REVISION_XM_B:
363 		printf("Beagle xM Rev B\n");
364 		setenv("beaglerev", "xMB");
365 		MUX_BEAGLE_XM();
366 		/* Set VAUX2 to 1.8V for EHCI PHY */
367 		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
368 					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
369 					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
370 					TWL4030_PM_RECEIVER_DEV_GRP_P1);
371 		break;
372 	case REVISION_XM_C:
373 		printf("Beagle xM Rev C\n");
374 		setenv("beaglerev", "xMC");
375 		MUX_BEAGLE_XM();
376 		/* Set VAUX2 to 1.8V for EHCI PHY */
377 		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
378 					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
379 					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
380 					TWL4030_PM_RECEIVER_DEV_GRP_P1);
381 		break;
382 	default:
383 		printf("Beagle unknown 0x%02x\n", get_board_revision());
384 		MUX_BEAGLE_XM();
385 		/* Set VAUX2 to 1.8V for EHCI PHY */
386 		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
387 					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
388 					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
389 					TWL4030_PM_RECEIVER_DEV_GRP_P1);
390 	}
391 
392 	switch (get_expansion_id()) {
393 	case TINCANTOOLS_ZIPPY:
394 		printf("Recognized Tincantools Zippy board (rev %d %s)\n",
395 			expansion_config.revision,
396 			expansion_config.fab_revision);
397 		MUX_TINCANTOOLS_ZIPPY();
398 		setenv("buddy", "zippy");
399 		break;
400 	case TINCANTOOLS_ZIPPY2:
401 		printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
402 			expansion_config.revision,
403 			expansion_config.fab_revision);
404 		MUX_TINCANTOOLS_ZIPPY();
405 		setenv("buddy", "zippy2");
406 		break;
407 	case TINCANTOOLS_TRAINER:
408 		printf("Recognized Tincantools Trainer board (rev %d %s)\n",
409 			expansion_config.revision,
410 			expansion_config.fab_revision);
411 		MUX_TINCANTOOLS_ZIPPY();
412 		MUX_TINCANTOOLS_TRAINER();
413 		setenv("buddy", "trainer");
414 		break;
415 	case TINCANTOOLS_SHOWDOG:
416 		printf("Recognized Tincantools Showdow board (rev %d %s)\n",
417 			expansion_config.revision,
418 			expansion_config.fab_revision);
419 		/* Place holder for DSS2 definition for showdog lcd */
420 		setenv("defaultdisplay", "showdoglcd");
421 		setenv("buddy", "showdog");
422 		break;
423 	case KBADC_BEAGLEFPGA:
424 		printf("Recognized KBADC Beagle FPGA board\n");
425 		MUX_KBADC_BEAGLEFPGA();
426 		setenv("buddy", "beaglefpga");
427 		break;
428 	case LW_BEAGLETOUCH:
429 		printf("Recognized Liquidware BeagleTouch board\n");
430 		setenv("buddy", "beagletouch");
431 		break;
432 	case BRAINMUX_LCDOG:
433 		printf("Recognized Brainmux LCDog board\n");
434 		setenv("buddy", "lcdog");
435 		break;
436 	case BRAINMUX_LCDOGTOUCH:
437 		printf("Recognized Brainmux LCDog Touch board\n");
438 		setenv("buddy", "lcdogtouch");
439 		break;
440 	case BBTOYS_WIFI:
441 		printf("Recognized BeagleBoardToys WiFi board\n");
442 		MUX_BBTOYS_WIFI()
443 		setenv("buddy", "bbtoys-wifi");
444 		break;;
445 	case BBTOYS_VGA:
446 		printf("Recognized BeagleBoardToys VGA board\n");
447 		break;;
448 	case BBTOYS_LCD:
449 		printf("Recognized BeagleBoardToys LCD board\n");
450 		break;;
451 	case BCT_BRETTL3:
452 		printf("Recognized bct electronic GmbH brettl3 board\n");
453 		break;
454 	case BCT_BRETTL4:
455 		printf("Recognized bct electronic GmbH brettl4 board\n");
456 		break;
457 	case BEAGLE_NO_EEPROM:
458 		printf("No EEPROM on expansion board\n");
459 		setenv("buddy", "none");
460 		break;
461 	default:
462 		printf("Unrecognized expansion board: %x\n",
463 			expansion_config.device_vendor);
464 		setenv("buddy", "unknown");
465 	}
466 
467 	if (expansion_config.content == 1)
468 		setenv(expansion_config.env_var, expansion_config.env_setting);
469 
470 	twl4030_power_init();
471 	switch (get_board_revision()) {
472 	case REVISION_XM_A:
473 	case REVISION_XM_B:
474 		twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
475 		break;
476 	default:
477 		twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
478 		break;
479 	}
480 
481 	/* Set GPIO states before they are made outputs */
482 	writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
483 		&gpio6_base->setdataout);
484 	writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
485 		GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
486 
487 	/* Configure GPIOs to output */
488 	writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
489 	writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
490 		GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
491 
492 	dieid_num_r();
493 
494 #ifdef CONFIG_VIDEO_OMAP3
495 	beagle_dvi_pup();
496 	beagle_display_init();
497 	omap3_dss_enable();
498 #endif
499 
500 #ifdef CONFIG_USB_MUSB_OMAP2PLUS
501 	musb_register(&musb_plat, &musb_board_data, (void *)MUSB_BASE);
502 #endif
503 
504 	return 0;
505 }
506 
507 /*
508  * Routine: set_muxconf_regs
509  * Description: Setting up the configuration Mux registers specific to the
510  *		hardware. Many pins need to be moved from protect to primary
511  *		mode.
512  */
513 void set_muxconf_regs(void)
514 {
515 	MUX_BEAGLE();
516 }
517 
518 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
519 int board_mmc_init(bd_t *bis)
520 {
521 	omap_mmc_init(0, 0, 0);
522 	return 0;
523 }
524 #endif
525 
526 #if defined(CONFIG_USB_EHCI) && !defined(CONFIG_SPL_BUILD)
527 /* Call usb_stop() before starting the kernel */
528 void show_boot_progress(int val)
529 {
530 	if (val == BOOTSTAGE_ID_RUN_OS)
531 		usb_stop();
532 }
533 
534 static struct omap_usbhs_board_data usbhs_bdata = {
535 	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
536 	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
537 	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
538 };
539 
540 int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
541 {
542 	return omap_ehci_hcd_init(&usbhs_bdata, hccr, hcor);
543 }
544 
545 int ehci_hcd_stop(int index)
546 {
547 	return omap_ehci_hcd_stop();
548 }
549 
550 #endif /* CONFIG_USB_EHCI */
551 
552 #if defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET)
553 int board_eth_init(bd_t *bis)
554 {
555 	return usb_eth_initialize(bis);
556 }
557 #endif
558