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