xref: /openbmc/u-boot/board/ti/beagle/beagle.c (revision 1d0f5fa1)
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 "beagle.h"
46 #include <command.h>
47 
48 #ifdef CONFIG_USB_EHCI
49 #include <usb.h>
50 #include <asm/ehci-omap.h>
51 #endif
52 
53 #define pr_debug(fmt, args...) debug(fmt, ##args)
54 
55 #define TWL4030_I2C_BUS			0
56 #define EXPANSION_EEPROM_I2C_BUS	1
57 #define EXPANSION_EEPROM_I2C_ADDRESS	0x50
58 
59 #define TINCANTOOLS_ZIPPY		0x01000100
60 #define TINCANTOOLS_ZIPPY2		0x02000100
61 #define TINCANTOOLS_TRAINER		0x04000100
62 #define TINCANTOOLS_SHOWDOG		0x03000100
63 #define KBADC_BEAGLEFPGA		0x01000600
64 #define LW_BEAGLETOUCH			0x01000700
65 #define BRAINMUX_LCDOG			0x01000800
66 #define BRAINMUX_LCDOGTOUCH		0x02000800
67 #define BBTOYS_WIFI			0x01000B00
68 #define BBTOYS_VGA			0x02000B00
69 #define BBTOYS_LCD			0x03000B00
70 #define BCT_BRETTL3			0x01000F00
71 #define BEAGLE_NO_EEPROM		0xffffffff
72 
73 DECLARE_GLOBAL_DATA_PTR;
74 
75 static struct {
76 	unsigned int device_vendor;
77 	unsigned char revision;
78 	unsigned char content;
79 	char fab_revision[8];
80 	char env_var[16];
81 	char env_setting[64];
82 } expansion_config;
83 
84 /*
85  * Routine: board_init
86  * Description: Early hardware init.
87  */
88 int board_init(void)
89 {
90 	gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
91 	/* board id for Linux */
92 	gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
93 	/* boot param addr */
94 	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
95 
96 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
97 	status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
98 #endif
99 
100 	return 0;
101 }
102 
103 /*
104  * Routine: get_board_revision
105  * Description: Detect if we are running on a Beagle revision Ax/Bx,
106  *		C1/2/3, C4 or xM. This can be done by reading
107  *		the level of GPIO173, GPIO172 and GPIO171. This should
108  *		result in
109  *		GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
110  *		GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
111  *		GPIO173, GPIO172, GPIO171: 1 0 1 => C4
112  *		GPIO173, GPIO172, GPIO171: 0 0 0 => xM
113  */
114 int get_board_revision(void)
115 {
116 	int revision;
117 
118 	if (!gpio_request(171, "") &&
119 	    !gpio_request(172, "") &&
120 	    !gpio_request(173, "")) {
121 
122 		gpio_direction_input(171);
123 		gpio_direction_input(172);
124 		gpio_direction_input(173);
125 
126 		revision = gpio_get_value(173) << 2 |
127 			   gpio_get_value(172) << 1 |
128 			   gpio_get_value(171);
129 	} else {
130 		printf("Error: unable to acquire board revision GPIOs\n");
131 		revision = -1;
132 	}
133 
134 	return revision;
135 }
136 
137 #ifdef CONFIG_SPL_BUILD
138 /*
139  * Routine: get_board_mem_timings
140  * Description: If we use SPL then there is no x-loader nor config header
141  * so we have to setup the DDR timings ourself on both banks.
142  */
143 void get_board_mem_timings(u32 *mcfg, u32 *ctrla, u32 *ctrlb, u32 *rfr_ctrl,
144 		u32 *mr)
145 {
146 	int pop_mfr, pop_id;
147 
148 	/*
149 	 * We need to identify what PoP memory is on the board so that
150 	 * we know what timings to use.  If we can't identify it then
151 	 * we know it's an xM.  To map the ID values please see nand_ids.c
152 	 */
153 	identify_nand_chip(&pop_mfr, &pop_id);
154 
155 	*mr = MICRON_V_MR_165;
156 	switch (get_board_revision()) {
157 	case REVISION_C4:
158 		if (pop_mfr == NAND_MFR_STMICRO && pop_id == 0xba) {
159 			/* 512MB DDR */
160 			*mcfg = NUMONYX_V_MCFG_165(512 << 20);
161 			*ctrla = NUMONYX_V_ACTIMA_165;
162 			*ctrlb = NUMONYX_V_ACTIMB_165;
163 			*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
164 			break;
165 		} else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xba) {
166 			/* Beagleboard Rev C4, 512MB Nand/256MB DDR*/
167 			*mcfg = MICRON_V_MCFG_165(128 << 20);
168 			*ctrla = MICRON_V_ACTIMA_165;
169 			*ctrlb = MICRON_V_ACTIMB_165;
170 			*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
171 			break;
172 		} else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xbc) {
173 			/* Beagleboard Rev C5, 256MB DDR */
174 			*mcfg = MICRON_V_MCFG_200(256 << 20);
175 			*ctrla = MICRON_V_ACTIMA_200;
176 			*ctrlb = MICRON_V_ACTIMB_200;
177 			*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
178 			break;
179 		}
180 	case REVISION_XM_A:
181 	case REVISION_XM_B:
182 	case REVISION_XM_C:
183 		if (pop_mfr == 0) {
184 			/* 256MB DDR */
185 			*mcfg = MICRON_V_MCFG_200(256 << 20);
186 			*ctrla = MICRON_V_ACTIMA_200;
187 			*ctrlb = MICRON_V_ACTIMB_200;
188 			*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
189 		} else {
190 			/* 512MB DDR */
191 			*mcfg = NUMONYX_V_MCFG_165(512 << 20);
192 			*ctrla = NUMONYX_V_ACTIMA_165;
193 			*ctrlb = NUMONYX_V_ACTIMB_165;
194 			*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
195 		}
196 		break;
197 	default:
198 		/* Assume 128MB and Micron/165MHz timings to be safe */
199 		*mcfg = MICRON_V_MCFG_165(128 << 20);
200 		*ctrla = MICRON_V_ACTIMA_165;
201 		*ctrlb = MICRON_V_ACTIMB_165;
202 		*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
203 	}
204 }
205 #endif
206 
207 /*
208  * Routine: get_expansion_id
209  * Description: This function checks for expansion board by checking I2C
210  *		bus 1 for the availability of an AT24C01B serial EEPROM.
211  *		returns the device_vendor field from the EEPROM
212  */
213 unsigned int get_expansion_id(void)
214 {
215 	i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
216 
217 	/* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
218 	if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
219 		i2c_set_bus_num(TWL4030_I2C_BUS);
220 		return BEAGLE_NO_EEPROM;
221 	}
222 
223 	/* read configuration data */
224 	i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
225 		 sizeof(expansion_config));
226 
227 	i2c_set_bus_num(TWL4030_I2C_BUS);
228 
229 	return expansion_config.device_vendor;
230 }
231 
232 /*
233  * Configure DSS to display background color on DVID
234  * Configure VENC to display color bar on S-Video
235  */
236 void beagle_display_init(void)
237 {
238 	omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
239 	switch (get_board_revision()) {
240 	case REVISION_AXBX:
241 	case REVISION_CX:
242 	case REVISION_C4:
243 		omap3_dss_panel_config(&dvid_cfg);
244 		break;
245 	case REVISION_XM_A:
246 	case REVISION_XM_B:
247 	case REVISION_XM_C:
248 	default:
249 		omap3_dss_panel_config(&dvid_cfg_xm);
250 		break;
251 	}
252 }
253 
254 /*
255  * Enable DVI power
256  */
257 static void beagle_dvi_pup(void)
258 {
259 	uchar val;
260 
261 	switch (get_board_revision()) {
262 	case REVISION_AXBX:
263 	case REVISION_CX:
264 	case REVISION_C4:
265 	case REVISION_XM_A:
266 		gpio_request(170, "");
267 		gpio_direction_output(170, 0);
268 		gpio_set_value(170, 1);
269 		break;
270 	case REVISION_XM_B:
271 	case REVISION_XM_C:
272 	default:
273 		#define GPIODATADIR1 (TWL4030_BASEADD_GPIO+3)
274 		#define GPIODATAOUT1 (TWL4030_BASEADD_GPIO+6)
275 
276 		i2c_read(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
277 		val |= 4;
278 		i2c_write(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
279 
280 		i2c_read(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
281 		val |= 4;
282 		i2c_write(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
283 		break;
284 	}
285 }
286 
287 /*
288  * Routine: misc_init_r
289  * Description: Configure board specific parts
290  */
291 int misc_init_r(void)
292 {
293 	struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
294 	struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
295 	struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
296 
297 	/* Enable i2c2 pullup resisters */
298 	writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);
299 
300 	switch (get_board_revision()) {
301 	case REVISION_AXBX:
302 		printf("Beagle Rev Ax/Bx\n");
303 		setenv("beaglerev", "AxBx");
304 		break;
305 	case REVISION_CX:
306 		printf("Beagle Rev C1/C2/C3\n");
307 		setenv("beaglerev", "Cx");
308 		MUX_BEAGLE_C();
309 		break;
310 	case REVISION_C4:
311 		printf("Beagle Rev C4\n");
312 		setenv("beaglerev", "C4");
313 		MUX_BEAGLE_C();
314 		/* Set VAUX2 to 1.8V for EHCI PHY */
315 		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
316 					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
317 					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
318 					TWL4030_PM_RECEIVER_DEV_GRP_P1);
319 		break;
320 	case REVISION_XM_A:
321 		printf("Beagle xM Rev A\n");
322 		setenv("beaglerev", "xMA");
323 		MUX_BEAGLE_XM();
324 		/* Set VAUX2 to 1.8V for EHCI PHY */
325 		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
326 					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
327 					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
328 					TWL4030_PM_RECEIVER_DEV_GRP_P1);
329 		break;
330 	case REVISION_XM_B:
331 		printf("Beagle xM Rev B\n");
332 		setenv("beaglerev", "xMB");
333 		MUX_BEAGLE_XM();
334 		/* Set VAUX2 to 1.8V for EHCI PHY */
335 		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
336 					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
337 					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
338 					TWL4030_PM_RECEIVER_DEV_GRP_P1);
339 		break;
340 	case REVISION_XM_C:
341 		printf("Beagle xM Rev C\n");
342 		setenv("beaglerev", "xMC");
343 		MUX_BEAGLE_XM();
344 		/* Set VAUX2 to 1.8V for EHCI PHY */
345 		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
346 					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
347 					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
348 					TWL4030_PM_RECEIVER_DEV_GRP_P1);
349 		break;
350 	default:
351 		printf("Beagle unknown 0x%02x\n", get_board_revision());
352 		MUX_BEAGLE_XM();
353 		/* Set VAUX2 to 1.8V for EHCI PHY */
354 		twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
355 					TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
356 					TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
357 					TWL4030_PM_RECEIVER_DEV_GRP_P1);
358 	}
359 
360 	switch (get_expansion_id()) {
361 	case TINCANTOOLS_ZIPPY:
362 		printf("Recognized Tincantools Zippy board (rev %d %s)\n",
363 			expansion_config.revision,
364 			expansion_config.fab_revision);
365 		MUX_TINCANTOOLS_ZIPPY();
366 		setenv("buddy", "zippy");
367 		break;
368 	case TINCANTOOLS_ZIPPY2:
369 		printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
370 			expansion_config.revision,
371 			expansion_config.fab_revision);
372 		MUX_TINCANTOOLS_ZIPPY();
373 		setenv("buddy", "zippy2");
374 		break;
375 	case TINCANTOOLS_TRAINER:
376 		printf("Recognized Tincantools Trainer board (rev %d %s)\n",
377 			expansion_config.revision,
378 			expansion_config.fab_revision);
379 		MUX_TINCANTOOLS_ZIPPY();
380 		MUX_TINCANTOOLS_TRAINER();
381 		setenv("buddy", "trainer");
382 		break;
383 	case TINCANTOOLS_SHOWDOG:
384 		printf("Recognized Tincantools Showdow board (rev %d %s)\n",
385 			expansion_config.revision,
386 			expansion_config.fab_revision);
387 		/* Place holder for DSS2 definition for showdog lcd */
388 		setenv("defaultdisplay", "showdoglcd");
389 		setenv("buddy", "showdog");
390 		break;
391 	case KBADC_BEAGLEFPGA:
392 		printf("Recognized KBADC Beagle FPGA board\n");
393 		MUX_KBADC_BEAGLEFPGA();
394 		setenv("buddy", "beaglefpga");
395 		break;
396 	case LW_BEAGLETOUCH:
397 		printf("Recognized Liquidware BeagleTouch board\n");
398 		setenv("buddy", "beagletouch");
399 		break;
400 	case BRAINMUX_LCDOG:
401 		printf("Recognized Brainmux LCDog board\n");
402 		setenv("buddy", "lcdog");
403 		break;
404 	case BRAINMUX_LCDOGTOUCH:
405 		printf("Recognized Brainmux LCDog Touch board\n");
406 		setenv("buddy", "lcdogtouch");
407 		break;
408 	case BBTOYS_WIFI:
409 		printf("Recognized BeagleBoardToys WiFi board\n");
410 		MUX_BBTOYS_WIFI()
411 		setenv("buddy", "bbtoys-wifi");
412 		break;;
413 	case BBTOYS_VGA:
414 		printf("Recognized BeagleBoardToys VGA board\n");
415 		break;;
416 	case BBTOYS_LCD:
417 		printf("Recognized BeagleBoardToys LCD board\n");
418 		break;;
419 	case BCT_BRETTL3:
420 	    printf("Recognized bct electronic GmbH brettl3 board\n");
421 	    break;
422 	case BEAGLE_NO_EEPROM:
423 		printf("No EEPROM on expansion board\n");
424 		setenv("buddy", "none");
425 		break;
426 	default:
427 		printf("Unrecognized expansion board: %x\n",
428 			expansion_config.device_vendor);
429 		setenv("buddy", "unknown");
430 	}
431 
432 	if (expansion_config.content == 1)
433 		setenv(expansion_config.env_var, expansion_config.env_setting);
434 
435 	twl4030_power_init();
436 	switch (get_board_revision()) {
437 	case REVISION_XM_A:
438 	case REVISION_XM_B:
439 		twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
440 		break;
441 	default:
442 		twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
443 		break;
444 	}
445 
446 	/* Set GPIO states before they are made outputs */
447 	writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
448 		&gpio6_base->setdataout);
449 	writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
450 		GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
451 
452 	/* Configure GPIOs to output */
453 	writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
454 	writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
455 		GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
456 
457 	dieid_num_r();
458 
459 	beagle_dvi_pup();
460 	beagle_display_init();
461 	omap3_dss_enable();
462 
463 	return 0;
464 }
465 
466 /*
467  * Routine: set_muxconf_regs
468  * Description: Setting up the configuration Mux registers specific to the
469  *		hardware. Many pins need to be moved from protect to primary
470  *		mode.
471  */
472 void set_muxconf_regs(void)
473 {
474 	MUX_BEAGLE();
475 }
476 
477 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
478 int board_mmc_init(bd_t *bis)
479 {
480 	omap_mmc_init(0);
481 	return 0;
482 }
483 #endif
484 
485 #ifdef CONFIG_USB_EHCI
486 /* Call usb_stop() before starting the kernel */
487 void show_boot_progress(int val)
488 {
489 	if (val == BOOTSTAGE_ID_RUN_OS)
490 		usb_stop();
491 }
492 
493 static struct omap_usbhs_board_data usbhs_bdata = {
494 	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
495 	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
496 	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
497 };
498 
499 int ehci_hcd_init(void)
500 {
501 	return omap_ehci_hcd_init(&usbhs_bdata);
502 }
503 
504 int ehci_hcd_stop(void)
505 {
506 	return omap_ehci_hcd_stop();
507 }
508 
509 #endif /* CONFIG_USB_EHCI */
510