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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  * SPDX-License-Identifier:     GPL-2.0+
15  */
16 #include <common.h>
17 #ifdef CONFIG_STATUS_LED
18 #include <status_led.h>
19 #endif
20 #include <twl4030.h>
21 #include <linux/mtd/nand.h>
22 #include <asm/io.h>
23 #include <asm/arch/mmc_host_def.h>
24 #include <asm/arch/mux.h>
25 #include <asm/arch/mem.h>
26 #include <asm/arch/sys_proto.h>
27 #include <asm/gpio.h>
28 #include <asm/mach-types.h>
29 #include <asm/omap_musb.h>
30 #include <asm/errno.h>
31 #include <linux/usb/ch9.h>
32 #include <linux/usb/gadget.h>
33 #include <linux/usb/musb.h>
34 #include "beagle.h"
35 #include <command.h>
36
37 #ifdef CONFIG_USB_EHCI
38 #include <usb.h>
39 #include <asm/ehci-omap.h>
40 #endif
41
42 #define TWL4030_I2C_BUS                 0
43 #define EXPANSION_EEPROM_I2C_BUS        1
44 #define EXPANSION_EEPROM_I2C_ADDRESS    0x50
45
46 #define TINCANTOOLS_ZIPPY               0x01000100
47 #define TINCANTOOLS_ZIPPY2              0x02000100
48 #define TINCANTOOLS_TRAINER             0x04000100
49 #define TINCANTOOLS_SHOWDOG             0x03000100
50 #define KBADC_BEAGLEFPGA                0x01000600
51 #define LW_BEAGLETOUCH                  0x01000700
52 #define BRAINMUX_LCDOG                  0x01000800
53 #define BRAINMUX_LCDOGTOUCH             0x02000800
54 #define BBTOYS_WIFI                     0x01000B00
55 #define BBTOYS_VGA                      0x02000B00
56 #define BBTOYS_LCD                      0x03000B00
57 #define BCT_BRETTL3                     0x01000F00
58 #define BCT_BRETTL4                     0x02000F00
59 #define LSR_COM6L_ADPT                  0x01001300
60 #define BEAGLE_NO_EEPROM                0xffffffff
61
62 DECLARE_GLOBAL_DATA_PTR;
63
64 static struct {
65         unsigned int device_vendor;
66         unsigned char revision;
67         unsigned char content;
68         char fab_revision[8];
69         char env_var[16];
70         char env_setting[64];
71 } expansion_config;
72
73 /*
74  * Routine: board_init
75  * Description: Early hardware init.
76  */
77 int board_init(void)
78 {
79         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
80         /* board id for Linux */
81         gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
82         /* boot param addr */
83         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
84
85 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
86         status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
87 #endif
88
89         return 0;
90 }
91
92 /*
93  * Routine: get_board_revision
94  * Description: Detect if we are running on a Beagle revision Ax/Bx,
95  *              C1/2/3, C4, xM Ax/Bx or xM Cx. This can be done by reading
96  *              the level of GPIO173, GPIO172 and GPIO171. This should
97  *              result in
98  *              GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
99  *              GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
100  *              GPIO173, GPIO172, GPIO171: 1 0 1 => C4
101  *              GPIO173, GPIO172, GPIO171: 0 1 0 => xM Cx
102  *              GPIO173, GPIO172, GPIO171: 0 0 0 => xM Ax/Bx
103  */
104 static int get_board_revision(void)
105 {
106         int revision;
107
108         if (!gpio_request(171, "") &&
109             !gpio_request(172, "") &&
110             !gpio_request(173, "")) {
111
112                 gpio_direction_input(171);
113                 gpio_direction_input(172);
114                 gpio_direction_input(173);
115
116                 revision = gpio_get_value(173) << 2 |
117                            gpio_get_value(172) << 1 |
118                            gpio_get_value(171);
119         } else {
120                 printf("Error: unable to acquire board revision GPIOs\n");
121                 revision = -1;
122         }
123
124         return revision;
125 }
126
127 #ifdef CONFIG_SPL_BUILD
128 /*
129  * Routine: get_board_mem_timings
130  * Description: If we use SPL then there is no x-loader nor config header
131  * so we have to setup the DDR timings ourself on both banks.
132  */
133 void get_board_mem_timings(struct board_sdrc_timings *timings)
134 {
135         int pop_mfr, pop_id;
136
137         /*
138          * We need to identify what PoP memory is on the board so that
139          * we know what timings to use.  If we can't identify it then
140          * we know it's an xM.  To map the ID values please see nand_ids.c
141          */
142         identify_nand_chip(&pop_mfr, &pop_id);
143
144         timings->mr = MICRON_V_MR_165;
145         switch (get_board_revision()) {
146         case REVISION_C4:
147                 if (pop_mfr == NAND_MFR_STMICRO && pop_id == 0xba) {
148                         /* 512MB DDR */
149                         timings->mcfg = NUMONYX_V_MCFG_165(512 << 20);
150                         timings->ctrla = NUMONYX_V_ACTIMA_165;
151                         timings->ctrlb = NUMONYX_V_ACTIMB_165;
152                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
153                         break;
154                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xba) {
155                         /* Beagleboard Rev C4, 512MB Nand/256MB DDR*/
156                         timings->mcfg = MICRON_V_MCFG_165(128 << 20);
157                         timings->ctrla = MICRON_V_ACTIMA_165;
158                         timings->ctrlb = MICRON_V_ACTIMB_165;
159                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
160                         break;
161                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xbc) {
162                         /* Beagleboard Rev C5, 256MB DDR */
163                         timings->mcfg = MICRON_V_MCFG_200(256 << 20);
164                         timings->ctrla = MICRON_V_ACTIMA_200;
165                         timings->ctrlb = MICRON_V_ACTIMB_200;
166                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
167                         break;
168                 }
169         case REVISION_XM_AB:
170         case REVISION_XM_C:
171                 if (pop_mfr == 0) {
172                         /* 256MB DDR */
173                         timings->mcfg = MICRON_V_MCFG_200(256 << 20);
174                         timings->ctrla = MICRON_V_ACTIMA_200;
175                         timings->ctrlb = MICRON_V_ACTIMB_200;
176                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
177                 } else {
178                         /* 512MB DDR */
179                         timings->mcfg = NUMONYX_V_MCFG_165(512 << 20);
180                         timings->ctrla = NUMONYX_V_ACTIMA_165;
181                         timings->ctrlb = NUMONYX_V_ACTIMB_165;
182                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
183                 }
184                 break;
185         default:
186                 /* Assume 128MB and Micron/165MHz timings to be safe */
187                 timings->mcfg = MICRON_V_MCFG_165(128 << 20);
188                 timings->ctrla = MICRON_V_ACTIMA_165;
189                 timings->ctrlb = MICRON_V_ACTIMB_165;
190                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
191         }
192 }
193 #endif
194
195 /*
196  * Routine: get_expansion_id
197  * Description: This function checks for expansion board by checking I2C
198  *              bus 1 for the availability of an AT24C01B serial EEPROM.
199  *              returns the device_vendor field from the EEPROM
200  */
201 static unsigned int get_expansion_id(void)
202 {
203         i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
204
205         /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
206         if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
207                 i2c_set_bus_num(TWL4030_I2C_BUS);
208                 return BEAGLE_NO_EEPROM;
209         }
210
211         /* read configuration data */
212         i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
213                  sizeof(expansion_config));
214
215         /* retry reading configuration data with 16bit addressing */
216         if ((expansion_config.device_vendor == 0xFFFFFF00) ||
217             (expansion_config.device_vendor == 0xFFFFFFFF)) {
218                 printf("EEPROM is blank or 8bit addressing failed: retrying with 16bit:\n");
219                 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 2, (u8 *)&expansion_config,
220                          sizeof(expansion_config));
221         }
222
223         i2c_set_bus_num(TWL4030_I2C_BUS);
224
225         return expansion_config.device_vendor;
226 }
227
228 #ifdef CONFIG_VIDEO_OMAP3
229 /*
230  * Configure DSS to display background color on DVID
231  * Configure VENC to display color bar on S-Video
232  */
233 static void beagle_display_init(void)
234 {
235         omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
236         switch (get_board_revision()) {
237         case REVISION_AXBX:
238         case REVISION_CX:
239         case REVISION_C4:
240                 omap3_dss_panel_config(&dvid_cfg);
241                 break;
242         case REVISION_XM_AB:
243         case REVISION_XM_C:
244         default:
245                 omap3_dss_panel_config(&dvid_cfg_xm);
246                 break;
247         }
248 }
249
250 /*
251  * Enable DVI power
252  */
253 static void beagle_dvi_pup(void)
254 {
255         uchar val;
256
257         switch (get_board_revision()) {
258         case REVISION_AXBX:
259         case REVISION_CX:
260         case REVISION_C4:
261                 gpio_request(170, "");
262                 gpio_direction_output(170, 0);
263                 gpio_set_value(170, 1);
264                 break;
265         case REVISION_XM_AB:
266         case REVISION_XM_C:
267         default:
268                 #define GPIODATADIR1 (TWL4030_BASEADD_GPIO+3)
269                 #define GPIODATAOUT1 (TWL4030_BASEADD_GPIO+6)
270
271                 i2c_read(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
272                 val |= 4;
273                 i2c_write(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
274
275                 i2c_read(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
276                 val |= 4;
277                 i2c_write(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
278                 break;
279         }
280 }
281 #endif
282
283 #ifdef CONFIG_USB_MUSB_OMAP2PLUS
284 static struct musb_hdrc_config musb_config = {
285         .multipoint     = 1,
286         .dyn_fifo       = 1,
287         .num_eps        = 16,
288         .ram_bits       = 12,
289 };
290
291 static struct omap_musb_board_data musb_board_data = {
292         .interface_type = MUSB_INTERFACE_ULPI,
293 };
294
295 static struct musb_hdrc_platform_data musb_plat = {
296 #if defined(CONFIG_MUSB_HOST)
297         .mode           = MUSB_HOST,
298 #elif defined(CONFIG_MUSB_GADGET)
299         .mode           = MUSB_PERIPHERAL,
300 #else
301 #error "Please define either CONFIG_MUSB_HOST or CONFIG_MUSB_GADGET"
302 #endif
303         .config         = &musb_config,
304         .power          = 100,
305         .platform_ops   = &omap2430_ops,
306         .board_data     = &musb_board_data,
307 };
308 #endif
309
310 /*
311  * Routine: misc_init_r
312  * Description: Configure board specific parts
313  */
314 int misc_init_r(void)
315 {
316         struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
317         struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
318         struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
319         bool generate_fake_mac = false;
320         u32 value;
321
322         /* Enable i2c2 pullup resisters */
323         value = readl(&prog_io_base->io1);
324         value &= ~(PRG_I2C2_PULLUPRESX);
325         writel(value, &prog_io_base->io1);
326
327         switch (get_board_revision()) {
328         case REVISION_AXBX:
329                 printf("Beagle Rev Ax/Bx\n");
330                 setenv("beaglerev", "AxBx");
331                 break;
332         case REVISION_CX:
333                 printf("Beagle Rev C1/C2/C3\n");
334                 setenv("beaglerev", "Cx");
335                 MUX_BEAGLE_C();
336                 break;
337         case REVISION_C4:
338                 printf("Beagle Rev C4\n");
339                 setenv("beaglerev", "C4");
340                 MUX_BEAGLE_C();
341                 /* Set VAUX2 to 1.8V for EHCI PHY */
342                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
343                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
344                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
345                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
346                 break;
347         case REVISION_XM_AB:
348                 printf("Beagle xM Rev A/B\n");
349                 setenv("beaglerev", "xMAB");
350                 MUX_BEAGLE_XM();
351                 /* Set VAUX2 to 1.8V for EHCI PHY */
352                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
353                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
354                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
355                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
356                 generate_fake_mac = true;
357                 break;
358         case REVISION_XM_C:
359                 printf("Beagle xM Rev C\n");
360                 setenv("beaglerev", "xMC");
361                 MUX_BEAGLE_XM();
362                 /* Set VAUX2 to 1.8V for EHCI PHY */
363                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
364                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
365                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
366                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
367                 generate_fake_mac = true;
368                 break;
369         default:
370                 printf("Beagle unknown 0x%02x\n", get_board_revision());
371                 MUX_BEAGLE_XM();
372                 /* Set VAUX2 to 1.8V for EHCI PHY */
373                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
374                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
375                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
376                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
377                 generate_fake_mac = true;
378         }
379
380         switch (get_expansion_id()) {
381         case TINCANTOOLS_ZIPPY:
382                 printf("Recognized Tincantools Zippy board (rev %d %s)\n",
383                         expansion_config.revision,
384                         expansion_config.fab_revision);
385                 MUX_TINCANTOOLS_ZIPPY();
386                 setenv("buddy", "zippy");
387                 break;
388         case TINCANTOOLS_ZIPPY2:
389                 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
390                         expansion_config.revision,
391                         expansion_config.fab_revision);
392                 MUX_TINCANTOOLS_ZIPPY();
393                 setenv("buddy", "zippy2");
394                 break;
395         case TINCANTOOLS_TRAINER:
396                 printf("Recognized Tincantools Trainer board (rev %d %s)\n",
397                         expansion_config.revision,
398                         expansion_config.fab_revision);
399                 MUX_TINCANTOOLS_ZIPPY();
400                 MUX_TINCANTOOLS_TRAINER();
401                 setenv("buddy", "trainer");
402                 break;
403         case TINCANTOOLS_SHOWDOG:
404                 printf("Recognized Tincantools Showdow board (rev %d %s)\n",
405                         expansion_config.revision,
406                         expansion_config.fab_revision);
407                 /* Place holder for DSS2 definition for showdog lcd */
408                 setenv("defaultdisplay", "showdoglcd");
409                 setenv("buddy", "showdog");
410                 break;
411         case KBADC_BEAGLEFPGA:
412                 printf("Recognized KBADC Beagle FPGA board\n");
413                 MUX_KBADC_BEAGLEFPGA();
414                 setenv("buddy", "beaglefpga");
415                 break;
416         case LW_BEAGLETOUCH:
417                 printf("Recognized Liquidware BeagleTouch board\n");
418                 setenv("buddy", "beagletouch");
419                 break;
420         case BRAINMUX_LCDOG:
421                 printf("Recognized Brainmux LCDog board\n");
422                 setenv("buddy", "lcdog");
423                 break;
424         case BRAINMUX_LCDOGTOUCH:
425                 printf("Recognized Brainmux LCDog Touch board\n");
426                 setenv("buddy", "lcdogtouch");
427                 break;
428         case BBTOYS_WIFI:
429                 printf("Recognized BeagleBoardToys WiFi board\n");
430                 MUX_BBTOYS_WIFI()
431                 setenv("buddy", "bbtoys-wifi");
432                 break;;
433         case BBTOYS_VGA:
434                 printf("Recognized BeagleBoardToys VGA board\n");
435                 break;;
436         case BBTOYS_LCD:
437                 printf("Recognized BeagleBoardToys LCD board\n");
438                 break;;
439         case BCT_BRETTL3:
440                 printf("Recognized bct electronic GmbH brettl3 board\n");
441                 break;
442         case BCT_BRETTL4:
443                 printf("Recognized bct electronic GmbH brettl4 board\n");
444                 break;
445         case LSR_COM6L_ADPT:
446                 printf("Recognized LSR COM6L Adapter Board\n");
447                 MUX_BBTOYS_WIFI()
448                 setenv("buddy", "lsr-com6l-adpt");
449                 break;
450         case BEAGLE_NO_EEPROM:
451                 printf("No EEPROM on expansion board\n");
452                 setenv("buddy", "none");
453                 break;
454         default:
455                 printf("Unrecognized expansion board: %x\n",
456                         expansion_config.device_vendor);
457                 setenv("buddy", "unknown");
458         }
459
460         if (expansion_config.content == 1)
461                 setenv(expansion_config.env_var, expansion_config.env_setting);
462
463         twl4030_power_init();
464         switch (get_board_revision()) {
465         case REVISION_XM_AB:
466                 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
467                 break;
468         default:
469                 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
470                 break;
471         }
472
473         /* Set GPIO states before they are made outputs */
474         writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
475                 &gpio6_base->setdataout);
476         writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
477                 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
478
479         /* Configure GPIOs to output */
480         writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
481         writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
482                 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
483
484         dieid_num_r();
485
486 #ifdef CONFIG_VIDEO_OMAP3
487         beagle_dvi_pup();
488         beagle_display_init();
489         omap3_dss_enable();
490 #endif
491
492 #ifdef CONFIG_USB_MUSB_OMAP2PLUS
493         musb_register(&musb_plat, &musb_board_data, (void *)MUSB_BASE);
494 #endif
495
496         if (generate_fake_mac) {
497                 u32 id[4];
498
499                 get_dieid(id);
500                 usb_fake_mac_from_die_id(id);
501         }
502
503         return 0;
504 }
505
506 /*
507  * Routine: set_muxconf_regs
508  * Description: Setting up the configuration Mux registers specific to the
509  *              hardware. Many pins need to be moved from protect to primary
510  *              mode.
511  */
512 void set_muxconf_regs(void)
513 {
514         MUX_BEAGLE();
515 }
516
517 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
518 int board_mmc_init(bd_t *bis)
519 {
520         return omap_mmc_init(0, 0, 0, -1, -1);
521 }
522 #endif
523
524 #if defined(CONFIG_USB_EHCI) && !defined(CONFIG_SPL_BUILD)
525 /* Call usb_stop() before starting the kernel */
526 void show_boot_progress(int val)
527 {
528         if (val == BOOTSTAGE_ID_RUN_OS)
529                 usb_stop();
530 }
531
532 static struct omap_usbhs_board_data usbhs_bdata = {
533         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
534         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
535         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
536 };
537
538 int ehci_hcd_init(int index, enum usb_init_type init,
539                 struct ehci_hccr **hccr, struct ehci_hcor **hcor)
540 {
541         return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
542 }
543
544 int ehci_hcd_stop(int index)
545 {
546         return omap_ehci_hcd_stop();
547 }
548
549 #endif /* CONFIG_USB_EHCI */
550
551 #if defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET)
552 int board_eth_init(bd_t *bis)
553 {
554         return usb_eth_initialize(bis);
555 }
556 #endif