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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 LSR_COM6L_ADPT                  0x01001300
76 #define BEAGLE_NO_EEPROM                0xffffffff
77
78 DECLARE_GLOBAL_DATA_PTR;
79
80 static struct {
81         unsigned int device_vendor;
82         unsigned char revision;
83         unsigned char content;
84         char fab_revision[8];
85         char env_var[16];
86         char env_setting[64];
87 } expansion_config;
88
89 /*
90  * Routine: board_init
91  * Description: Early hardware init.
92  */
93 int board_init(void)
94 {
95         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
96         /* board id for Linux */
97         gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
98         /* boot param addr */
99         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
100
101 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
102         status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
103 #endif
104
105         return 0;
106 }
107
108 /*
109  * Routine: get_board_revision
110  * Description: Detect if we are running on a Beagle revision Ax/Bx,
111  *              C1/2/3, C4 or xM. This can be done by reading
112  *              the level of GPIO173, GPIO172 and GPIO171. This should
113  *              result in
114  *              GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
115  *              GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
116  *              GPIO173, GPIO172, GPIO171: 1 0 1 => C4
117  *              GPIO173, GPIO172, GPIO171: 0 0 0 => xM
118  */
119 static int get_board_revision(void)
120 {
121         int revision;
122
123         if (!gpio_request(171, "") &&
124             !gpio_request(172, "") &&
125             !gpio_request(173, "")) {
126
127                 gpio_direction_input(171);
128                 gpio_direction_input(172);
129                 gpio_direction_input(173);
130
131                 revision = gpio_get_value(173) << 2 |
132                            gpio_get_value(172) << 1 |
133                            gpio_get_value(171);
134         } else {
135                 printf("Error: unable to acquire board revision GPIOs\n");
136                 revision = -1;
137         }
138
139         return revision;
140 }
141
142 #ifdef CONFIG_SPL_BUILD
143 /*
144  * Routine: get_board_mem_timings
145  * Description: If we use SPL then there is no x-loader nor config header
146  * so we have to setup the DDR timings ourself on both banks.
147  */
148 void get_board_mem_timings(struct board_sdrc_timings *timings)
149 {
150         int pop_mfr, pop_id;
151
152         /*
153          * We need to identify what PoP memory is on the board so that
154          * we know what timings to use.  If we can't identify it then
155          * we know it's an xM.  To map the ID values please see nand_ids.c
156          */
157         identify_nand_chip(&pop_mfr, &pop_id);
158
159         timings->mr = MICRON_V_MR_165;
160         switch (get_board_revision()) {
161         case REVISION_C4:
162                 if (pop_mfr == NAND_MFR_STMICRO && pop_id == 0xba) {
163                         /* 512MB DDR */
164                         timings->mcfg = NUMONYX_V_MCFG_165(512 << 20);
165                         timings->ctrla = NUMONYX_V_ACTIMA_165;
166                         timings->ctrlb = NUMONYX_V_ACTIMB_165;
167                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
168                         break;
169                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xba) {
170                         /* Beagleboard Rev C4, 512MB Nand/256MB DDR*/
171                         timings->mcfg = MICRON_V_MCFG_165(128 << 20);
172                         timings->ctrla = MICRON_V_ACTIMA_165;
173                         timings->ctrlb = MICRON_V_ACTIMB_165;
174                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
175                         break;
176                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xbc) {
177                         /* Beagleboard Rev C5, 256MB DDR */
178                         timings->mcfg = MICRON_V_MCFG_200(256 << 20);
179                         timings->ctrla = MICRON_V_ACTIMA_200;
180                         timings->ctrlb = MICRON_V_ACTIMB_200;
181                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
182                         break;
183                 }
184         case REVISION_XM_A:
185         case REVISION_XM_B:
186         case REVISION_XM_C:
187                 if (pop_mfr == 0) {
188                         /* 256MB DDR */
189                         timings->mcfg = MICRON_V_MCFG_200(256 << 20);
190                         timings->ctrla = MICRON_V_ACTIMA_200;
191                         timings->ctrlb = MICRON_V_ACTIMB_200;
192                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
193                 } else {
194                         /* 512MB DDR */
195                         timings->mcfg = NUMONYX_V_MCFG_165(512 << 20);
196                         timings->ctrla = NUMONYX_V_ACTIMA_165;
197                         timings->ctrlb = NUMONYX_V_ACTIMB_165;
198                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
199                 }
200                 break;
201         default:
202                 /* Assume 128MB and Micron/165MHz timings to be safe */
203                 timings->mcfg = MICRON_V_MCFG_165(128 << 20);
204                 timings->ctrla = MICRON_V_ACTIMA_165;
205                 timings->ctrlb = MICRON_V_ACTIMB_165;
206                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
207         }
208 }
209 #endif
210
211 /*
212  * Routine: get_expansion_id
213  * Description: This function checks for expansion board by checking I2C
214  *              bus 1 for the availability of an AT24C01B serial EEPROM.
215  *              returns the device_vendor field from the EEPROM
216  */
217 static unsigned int get_expansion_id(void)
218 {
219         i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
220
221         /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
222         if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
223                 i2c_set_bus_num(TWL4030_I2C_BUS);
224                 return BEAGLE_NO_EEPROM;
225         }
226
227         /* read configuration data */
228         i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
229                  sizeof(expansion_config));
230
231         /* retry reading configuration data with 16bit addressing */
232         if ((expansion_config.device_vendor == 0xFFFFFF00) ||
233             (expansion_config.device_vendor == 0xFFFFFFFF)) {
234                 printf("EEPROM is blank or 8bit addressing failed: retrying with 16bit:\n");
235                 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 2, (u8 *)&expansion_config,
236                          sizeof(expansion_config));
237         }
238
239         i2c_set_bus_num(TWL4030_I2C_BUS);
240
241         return expansion_config.device_vendor;
242 }
243
244 #ifdef CONFIG_VIDEO_OMAP3
245 /*
246  * Configure DSS to display background color on DVID
247  * Configure VENC to display color bar on S-Video
248  */
249 static void beagle_display_init(void)
250 {
251         omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
252         switch (get_board_revision()) {
253         case REVISION_AXBX:
254         case REVISION_CX:
255         case REVISION_C4:
256                 omap3_dss_panel_config(&dvid_cfg);
257                 break;
258         case REVISION_XM_A:
259         case REVISION_XM_B:
260         case REVISION_XM_C:
261         default:
262                 omap3_dss_panel_config(&dvid_cfg_xm);
263                 break;
264         }
265 }
266
267 /*
268  * Enable DVI power
269  */
270 static void beagle_dvi_pup(void)
271 {
272         uchar val;
273
274         switch (get_board_revision()) {
275         case REVISION_AXBX:
276         case REVISION_CX:
277         case REVISION_C4:
278         case REVISION_XM_A:
279                 gpio_request(170, "");
280                 gpio_direction_output(170, 0);
281                 gpio_set_value(170, 1);
282                 break;
283         case REVISION_XM_B:
284         case REVISION_XM_C:
285         default:
286                 #define GPIODATADIR1 (TWL4030_BASEADD_GPIO+3)
287                 #define GPIODATAOUT1 (TWL4030_BASEADD_GPIO+6)
288
289                 i2c_read(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
290                 val |= 4;
291                 i2c_write(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
292
293                 i2c_read(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
294                 val |= 4;
295                 i2c_write(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
296                 break;
297         }
298 }
299 #endif
300
301 #ifdef CONFIG_USB_MUSB_OMAP2PLUS
302 static struct musb_hdrc_config musb_config = {
303         .multipoint     = 1,
304         .dyn_fifo       = 1,
305         .num_eps        = 16,
306         .ram_bits       = 12,
307 };
308
309 static struct omap_musb_board_data musb_board_data = {
310         .interface_type = MUSB_INTERFACE_ULPI,
311 };
312
313 static struct musb_hdrc_platform_data musb_plat = {
314 #if defined(CONFIG_MUSB_HOST)
315         .mode           = MUSB_HOST,
316 #elif defined(CONFIG_MUSB_GADGET)
317         .mode           = MUSB_PERIPHERAL,
318 #else
319 #error "Please define either CONFIG_MUSB_HOST or CONFIG_MUSB_GADGET"
320 #endif
321         .config         = &musb_config,
322         .power          = 100,
323         .platform_ops   = &omap2430_ops,
324         .board_data     = &musb_board_data,
325 };
326 #endif
327
328 /*
329  * Routine: misc_init_r
330  * Description: Configure board specific parts
331  */
332 int misc_init_r(void)
333 {
334         struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
335         struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
336         struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
337
338         /* Enable i2c2 pullup resisters */
339         writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);
340
341         switch (get_board_revision()) {
342         case REVISION_AXBX:
343                 printf("Beagle Rev Ax/Bx\n");
344                 setenv("beaglerev", "AxBx");
345                 break;
346         case REVISION_CX:
347                 printf("Beagle Rev C1/C2/C3\n");
348                 setenv("beaglerev", "Cx");
349                 MUX_BEAGLE_C();
350                 break;
351         case REVISION_C4:
352                 printf("Beagle Rev C4\n");
353                 setenv("beaglerev", "C4");
354                 MUX_BEAGLE_C();
355                 /* Set VAUX2 to 1.8V for EHCI PHY */
356                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
357                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
358                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
359                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
360                 break;
361         case REVISION_XM_A:
362                 printf("Beagle xM Rev A\n");
363                 setenv("beaglerev", "xMA");
364                 MUX_BEAGLE_XM();
365                 /* Set VAUX2 to 1.8V for EHCI PHY */
366                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
367                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
368                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
369                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
370                 break;
371         case REVISION_XM_B:
372                 printf("Beagle xM Rev B\n");
373                 setenv("beaglerev", "xMB");
374                 MUX_BEAGLE_XM();
375                 /* Set VAUX2 to 1.8V for EHCI PHY */
376                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
377                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
378                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
379                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
380                 break;
381         case REVISION_XM_C:
382                 printf("Beagle xM Rev C\n");
383                 setenv("beaglerev", "xMC");
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                 break;
391         default:
392                 printf("Beagle unknown 0x%02x\n", get_board_revision());
393                 MUX_BEAGLE_XM();
394                 /* Set VAUX2 to 1.8V for EHCI PHY */
395                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
396                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
397                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
398                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
399         }
400
401         switch (get_expansion_id()) {
402         case TINCANTOOLS_ZIPPY:
403                 printf("Recognized Tincantools Zippy board (rev %d %s)\n",
404                         expansion_config.revision,
405                         expansion_config.fab_revision);
406                 MUX_TINCANTOOLS_ZIPPY();
407                 setenv("buddy", "zippy");
408                 break;
409         case TINCANTOOLS_ZIPPY2:
410                 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
411                         expansion_config.revision,
412                         expansion_config.fab_revision);
413                 MUX_TINCANTOOLS_ZIPPY();
414                 setenv("buddy", "zippy2");
415                 break;
416         case TINCANTOOLS_TRAINER:
417                 printf("Recognized Tincantools Trainer board (rev %d %s)\n",
418                         expansion_config.revision,
419                         expansion_config.fab_revision);
420                 MUX_TINCANTOOLS_ZIPPY();
421                 MUX_TINCANTOOLS_TRAINER();
422                 setenv("buddy", "trainer");
423                 break;
424         case TINCANTOOLS_SHOWDOG:
425                 printf("Recognized Tincantools Showdow board (rev %d %s)\n",
426                         expansion_config.revision,
427                         expansion_config.fab_revision);
428                 /* Place holder for DSS2 definition for showdog lcd */
429                 setenv("defaultdisplay", "showdoglcd");
430                 setenv("buddy", "showdog");
431                 break;
432         case KBADC_BEAGLEFPGA:
433                 printf("Recognized KBADC Beagle FPGA board\n");
434                 MUX_KBADC_BEAGLEFPGA();
435                 setenv("buddy", "beaglefpga");
436                 break;
437         case LW_BEAGLETOUCH:
438                 printf("Recognized Liquidware BeagleTouch board\n");
439                 setenv("buddy", "beagletouch");
440                 break;
441         case BRAINMUX_LCDOG:
442                 printf("Recognized Brainmux LCDog board\n");
443                 setenv("buddy", "lcdog");
444                 break;
445         case BRAINMUX_LCDOGTOUCH:
446                 printf("Recognized Brainmux LCDog Touch board\n");
447                 setenv("buddy", "lcdogtouch");
448                 break;
449         case BBTOYS_WIFI:
450                 printf("Recognized BeagleBoardToys WiFi board\n");
451                 MUX_BBTOYS_WIFI()
452                 setenv("buddy", "bbtoys-wifi");
453                 break;;
454         case BBTOYS_VGA:
455                 printf("Recognized BeagleBoardToys VGA board\n");
456                 break;;
457         case BBTOYS_LCD:
458                 printf("Recognized BeagleBoardToys LCD board\n");
459                 break;;
460         case BCT_BRETTL3:
461                 printf("Recognized bct electronic GmbH brettl3 board\n");
462                 break;
463         case BCT_BRETTL4:
464                 printf("Recognized bct electronic GmbH brettl4 board\n");
465                 break;
466         case LSR_COM6L_ADPT:
467                 printf("Recognized LSR COM6L Adapter Board\n");
468                 MUX_BBTOYS_WIFI()
469                 setenv("buddy", "lsr-com6l-adpt");
470                 break;
471         case BEAGLE_NO_EEPROM:
472                 printf("No EEPROM on expansion board\n");
473                 setenv("buddy", "none");
474                 break;
475         default:
476                 printf("Unrecognized expansion board: %x\n",
477                         expansion_config.device_vendor);
478                 setenv("buddy", "unknown");
479         }
480
481         if (expansion_config.content == 1)
482                 setenv(expansion_config.env_var, expansion_config.env_setting);
483
484         twl4030_power_init();
485         switch (get_board_revision()) {
486         case REVISION_XM_A:
487         case REVISION_XM_B:
488                 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
489                 break;
490         default:
491                 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
492                 break;
493         }
494
495         /* Set GPIO states before they are made outputs */
496         writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
497                 &gpio6_base->setdataout);
498         writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
499                 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
500
501         /* Configure GPIOs to output */
502         writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
503         writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
504                 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
505
506         dieid_num_r();
507
508 #ifdef CONFIG_VIDEO_OMAP3
509         beagle_dvi_pup();
510         beagle_display_init();
511         omap3_dss_enable();
512 #endif
513
514 #ifdef CONFIG_USB_MUSB_OMAP2PLUS
515         musb_register(&musb_plat, &musb_board_data, (void *)MUSB_BASE);
516 #endif
517
518         return 0;
519 }
520
521 /*
522  * Routine: set_muxconf_regs
523  * Description: Setting up the configuration Mux registers specific to the
524  *              hardware. Many pins need to be moved from protect to primary
525  *              mode.
526  */
527 void set_muxconf_regs(void)
528 {
529         MUX_BEAGLE();
530 }
531
532 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
533 int board_mmc_init(bd_t *bis)
534 {
535         return omap_mmc_init(0, 0, 0, -1, -1);
536 }
537 #endif
538
539 #if defined(CONFIG_USB_EHCI) && !defined(CONFIG_SPL_BUILD)
540 /* Call usb_stop() before starting the kernel */
541 void show_boot_progress(int val)
542 {
543         if (val == BOOTSTAGE_ID_RUN_OS)
544                 usb_stop();
545 }
546
547 static struct omap_usbhs_board_data usbhs_bdata = {
548         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
549         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
550         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
551 };
552
553 int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
554 {
555         return omap_ehci_hcd_init(&usbhs_bdata, hccr, hcor);
556 }
557
558 int ehci_hcd_stop(int index)
559 {
560         return omap_ehci_hcd_stop();
561 }
562
563 #endif /* CONFIG_USB_EHCI */
564
565 #if defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET)
566 int board_eth_init(bd_t *bis)
567 {
568         return usb_eth_initialize(bis);
569 }
570 #endif