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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 "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 */