Merge git://git.denx.de/u-boot-spi
[oweals/u-boot.git] / board / ti / beagle / beagle.c
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 #include <dm.h>
18 #include <ns16550.h>
19 #ifdef CONFIG_LED_STATUS
20 #include <status_led.h>
21 #endif
22 #include <twl4030.h>
23 #include <linux/mtd/rawnand.h>
24 #include <asm/io.h>
25 #include <asm/arch/mmc_host_def.h>
26 #include <asm/arch/mux.h>
27 #include <asm/arch/mem.h>
28 #include <asm/arch/sys_proto.h>
29 #include <asm/gpio.h>
30 #include <asm/mach-types.h>
31 #include <asm/omap_musb.h>
32 #include <linux/errno.h>
33 #include <linux/usb/ch9.h>
34 #include <linux/usb/gadget.h>
35 #include <linux/usb/musb.h>
36 #include "beagle.h"
37 #include <command.h>
38
39 #ifdef CONFIG_USB_EHCI_HCD
40 #include <usb.h>
41 #include <asm/ehci-omap.h>
42 #endif
43
44 #define TWL4030_I2C_BUS                 0
45 #define EXPANSION_EEPROM_I2C_BUS        1
46 #define EXPANSION_EEPROM_I2C_ADDRESS    0x50
47
48 #define TINCANTOOLS_ZIPPY               0x01000100
49 #define TINCANTOOLS_ZIPPY2              0x02000100
50 #define TINCANTOOLS_TRAINER             0x04000100
51 #define TINCANTOOLS_SHOWDOG             0x03000100
52 #define KBADC_BEAGLEFPGA                0x01000600
53 #define LW_BEAGLETOUCH                  0x01000700
54 #define BRAINMUX_LCDOG                  0x01000800
55 #define BRAINMUX_LCDOGTOUCH             0x02000800
56 #define BBTOYS_WIFI                     0x01000B00
57 #define BBTOYS_VGA                      0x02000B00
58 #define BBTOYS_LCD                      0x03000B00
59 #define BCT_BRETTL3                     0x01000F00
60 #define BCT_BRETTL4                     0x02000F00
61 #define LSR_COM6L_ADPT                  0x01001300
62 #define BEAGLE_NO_EEPROM                0xffffffff
63
64 DECLARE_GLOBAL_DATA_PTR;
65
66 static struct {
67         unsigned int device_vendor;
68         unsigned char revision;
69         unsigned char content;
70         char fab_revision[8];
71         char env_var[16];
72         char env_setting[64];
73 } expansion_config;
74
75 static const struct ns16550_platdata beagle_serial = {
76         .base = OMAP34XX_UART3,
77         .reg_shift = 2,
78         .clock = V_NS16550_CLK,
79         .fcr = UART_FCR_DEFVAL,
80 };
81
82 U_BOOT_DEVICE(beagle_uart) = {
83         "ns16550_serial",
84         &beagle_serial
85 };
86
87 /*
88  * Routine: board_init
89  * Description: Early hardware init.
90  */
91 int board_init(void)
92 {
93         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
94         /* board id for Linux */
95         gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
96         /* boot param addr */
97         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
98
99 #if defined(CONFIG_LED_STATUS) && defined(CONFIG_LED_STATUS_BOOT_ENABLE)
100         status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_ON);
101 #endif
102
103         return 0;
104 }
105
106 #if defined(CONFIG_SPL_OS_BOOT)
107 int spl_start_uboot(void)
108 {
109         /* break into full u-boot on 'c' */
110         if (serial_tstc() && serial_getc() == 'c')
111                 return 1;
112
113         return 0;
114 }
115 #endif /* CONFIG_SPL_OS_BOOT */
116
117 /*
118  * Routine: get_board_revision
119  * Description: Detect if we are running on a Beagle revision Ax/Bx,
120  *              C1/2/3, C4, xM Ax/Bx or xM Cx. This can be done by reading
121  *              the level of GPIO173, GPIO172 and GPIO171. This should
122  *              result in
123  *              GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
124  *              GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
125  *              GPIO173, GPIO172, GPIO171: 1 0 1 => C4
126  *              GPIO173, GPIO172, GPIO171: 0 1 0 => xM Cx
127  *              GPIO173, GPIO172, GPIO171: 0 0 0 => xM Ax/Bx
128  */
129 static int get_board_revision(void)
130 {
131         static int revision = -1;
132
133         if (revision == -1) {
134                 if (!gpio_request(171, "rev0") &&
135                     !gpio_request(172, "rev1") &&
136                     !gpio_request(173, "rev2")) {
137                         gpio_direction_input(171);
138                         gpio_direction_input(172);
139                         gpio_direction_input(173);
140
141                         revision = gpio_get_value(173) << 2 |
142                                 gpio_get_value(172) << 1 |
143                                 gpio_get_value(171);
144                 } else {
145                         printf("Error: unable to acquire board revision GPIOs\n");
146                 }
147         }
148
149         return revision;
150 }
151
152 #ifdef CONFIG_SPL_BUILD
153 /*
154  * Routine: get_board_mem_timings
155  * Description: If we use SPL then there is no x-loader nor config header
156  * so we have to setup the DDR timings ourself on both banks.
157  */
158 void get_board_mem_timings(struct board_sdrc_timings *timings)
159 {
160         int pop_mfr, pop_id;
161
162         /*
163          * We need to identify what PoP memory is on the board so that
164          * we know what timings to use.  If we can't identify it then
165          * we know it's an xM.  To map the ID values please see nand_ids.c
166          */
167         identify_nand_chip(&pop_mfr, &pop_id);
168
169         timings->mr = MICRON_V_MR_165;
170         switch (get_board_revision()) {
171         case REVISION_C4:
172                 if (pop_mfr == NAND_MFR_STMICRO && pop_id == 0xba) {
173                         /* 512MB DDR */
174                         timings->mcfg = NUMONYX_V_MCFG_165(512 << 20);
175                         timings->ctrla = NUMONYX_V_ACTIMA_165;
176                         timings->ctrlb = NUMONYX_V_ACTIMB_165;
177                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
178                         break;
179                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xba) {
180                         /* Beagleboard Rev C4, 512MB Nand/256MB DDR*/
181                         timings->mcfg = MICRON_V_MCFG_165(128 << 20);
182                         timings->ctrla = MICRON_V_ACTIMA_165;
183                         timings->ctrlb = MICRON_V_ACTIMB_165;
184                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
185                         break;
186                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xbc) {
187                         /* Beagleboard Rev C5, 256MB DDR */
188                         timings->mcfg = MICRON_V_MCFG_200(256 << 20);
189                         timings->ctrla = MICRON_V_ACTIMA_200;
190                         timings->ctrlb = MICRON_V_ACTIMB_200;
191                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
192                         break;
193                 }
194         case REVISION_XM_AB:
195         case REVISION_XM_C:
196                 if (pop_mfr == 0) {
197                         /* 256MB DDR */
198                         timings->mcfg = MICRON_V_MCFG_200(256 << 20);
199                         timings->ctrla = MICRON_V_ACTIMA_200;
200                         timings->ctrlb = MICRON_V_ACTIMB_200;
201                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
202                 } else {
203                         /* 512MB DDR */
204                         timings->mcfg = NUMONYX_V_MCFG_165(512 << 20);
205                         timings->ctrla = NUMONYX_V_ACTIMA_165;
206                         timings->ctrlb = NUMONYX_V_ACTIMB_165;
207                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
208                 }
209                 break;
210         default:
211                 /* Assume 128MB and Micron/165MHz timings to be safe */
212                 timings->mcfg = MICRON_V_MCFG_165(128 << 20);
213                 timings->ctrla = MICRON_V_ACTIMA_165;
214                 timings->ctrlb = MICRON_V_ACTIMB_165;
215                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
216         }
217 }
218 #endif
219
220 /*
221  * Routine: get_expansion_id
222  * Description: This function checks for expansion board by checking I2C
223  *              bus 1 for the availability of an AT24C01B serial EEPROM.
224  *              returns the device_vendor field from the EEPROM
225  */
226 static unsigned int get_expansion_id(void)
227 {
228         i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
229
230         /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
231         if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
232                 i2c_set_bus_num(TWL4030_I2C_BUS);
233                 return BEAGLE_NO_EEPROM;
234         }
235
236         /* read configuration data */
237         i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
238                  sizeof(expansion_config));
239
240         /* retry reading configuration data with 16bit addressing */
241         if ((expansion_config.device_vendor == 0xFFFFFF00) ||
242             (expansion_config.device_vendor == 0xFFFFFFFF)) {
243                 printf("EEPROM is blank or 8bit addressing failed: retrying with 16bit:\n");
244                 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 2, (u8 *)&expansion_config,
245                          sizeof(expansion_config));
246         }
247
248         i2c_set_bus_num(TWL4030_I2C_BUS);
249
250         return expansion_config.device_vendor;
251 }
252
253 #ifdef CONFIG_VIDEO_OMAP3
254 /*
255  * Configure DSS to display background color on DVID
256  * Configure VENC to display color bar on S-Video
257  */
258 static void beagle_display_init(void)
259 {
260         omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
261         switch (get_board_revision()) {
262         case REVISION_AXBX:
263         case REVISION_CX:
264         case REVISION_C4:
265                 omap3_dss_panel_config(&dvid_cfg);
266                 break;
267         case REVISION_XM_AB:
268         case REVISION_XM_C:
269         default:
270                 omap3_dss_panel_config(&dvid_cfg_xm);
271                 break;
272         }
273 }
274
275 /*
276  * Enable DVI power
277  */
278 static void beagle_dvi_pup(void)
279 {
280         uchar val;
281
282         switch (get_board_revision()) {
283         case REVISION_AXBX:
284         case REVISION_CX:
285         case REVISION_C4:
286                 gpio_request(170, "dvi");
287                 gpio_direction_output(170, 0);
288                 gpio_set_value(170, 1);
289                 break;
290         case REVISION_XM_AB:
291         case REVISION_XM_C:
292         default:
293                 #define GPIODATADIR1 (TWL4030_BASEADD_GPIO+3)
294                 #define GPIODATAOUT1 (TWL4030_BASEADD_GPIO+6)
295
296                 i2c_read(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
297                 val |= 4;
298                 i2c_write(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
299
300                 i2c_read(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
301                 val |= 4;
302                 i2c_write(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
303                 break;
304         }
305 }
306 #endif
307
308 #ifdef CONFIG_USB_MUSB_OMAP2PLUS
309 static struct musb_hdrc_config musb_config = {
310         .multipoint     = 1,
311         .dyn_fifo       = 1,
312         .num_eps        = 16,
313         .ram_bits       = 12,
314 };
315
316 static struct omap_musb_board_data musb_board_data = {
317         .interface_type = MUSB_INTERFACE_ULPI,
318 };
319
320 static struct musb_hdrc_platform_data musb_plat = {
321 #if defined(CONFIG_USB_MUSB_HOST)
322         .mode           = MUSB_HOST,
323 #elif defined(CONFIG_USB_MUSB_GADGET)
324         .mode           = MUSB_PERIPHERAL,
325 #else
326 #error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET"
327 #endif
328         .config         = &musb_config,
329         .power          = 100,
330         .platform_ops   = &omap2430_ops,
331         .board_data     = &musb_board_data,
332 };
333 #endif
334
335 /*
336  * Routine: misc_init_r
337  * Description: Configure board specific parts
338  */
339 int misc_init_r(void)
340 {
341         struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
342         struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
343         struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
344         bool generate_fake_mac = false;
345         u32 value;
346
347         /* Enable i2c2 pullup resisters */
348         value = readl(&prog_io_base->io1);
349         value &= ~(PRG_I2C2_PULLUPRESX);
350         writel(value, &prog_io_base->io1);
351
352         switch (get_board_revision()) {
353         case REVISION_AXBX:
354                 printf("Beagle Rev Ax/Bx\n");
355                 env_set("beaglerev", "AxBx");
356                 break;
357         case REVISION_CX:
358                 printf("Beagle Rev C1/C2/C3\n");
359                 env_set("beaglerev", "Cx");
360                 MUX_BEAGLE_C();
361                 break;
362         case REVISION_C4:
363                 printf("Beagle Rev C4\n");
364                 env_set("beaglerev", "C4");
365                 MUX_BEAGLE_C();
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_AB:
373                 printf("Beagle xM Rev A/B\n");
374                 env_set("beaglerev", "xMAB");
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                 generate_fake_mac = true;
382                 break;
383         case REVISION_XM_C:
384                 printf("Beagle xM Rev C\n");
385                 env_set("beaglerev", "xMC");
386                 MUX_BEAGLE_XM();
387                 /* Set VAUX2 to 1.8V for EHCI PHY */
388                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
389                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
390                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
391                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
392                 generate_fake_mac = true;
393                 break;
394         default:
395                 printf("Beagle unknown 0x%02x\n", get_board_revision());
396                 MUX_BEAGLE_XM();
397                 /* Set VAUX2 to 1.8V for EHCI PHY */
398                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
399                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
400                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
401                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
402                 generate_fake_mac = true;
403         }
404
405         switch (get_expansion_id()) {
406         case TINCANTOOLS_ZIPPY:
407                 printf("Recognized Tincantools Zippy board (rev %d %s)\n",
408                         expansion_config.revision,
409                         expansion_config.fab_revision);
410                 MUX_TINCANTOOLS_ZIPPY();
411                 env_set("buddy", "zippy");
412                 break;
413         case TINCANTOOLS_ZIPPY2:
414                 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
415                         expansion_config.revision,
416                         expansion_config.fab_revision);
417                 MUX_TINCANTOOLS_ZIPPY();
418                 env_set("buddy", "zippy2");
419                 break;
420         case TINCANTOOLS_TRAINER:
421                 printf("Recognized Tincantools Trainer board (rev %d %s)\n",
422                         expansion_config.revision,
423                         expansion_config.fab_revision);
424                 MUX_TINCANTOOLS_ZIPPY();
425                 MUX_TINCANTOOLS_TRAINER();
426                 env_set("buddy", "trainer");
427                 break;
428         case TINCANTOOLS_SHOWDOG:
429                 printf("Recognized Tincantools Showdow board (rev %d %s)\n",
430                         expansion_config.revision,
431                         expansion_config.fab_revision);
432                 /* Place holder for DSS2 definition for showdog lcd */
433                 env_set("defaultdisplay", "showdoglcd");
434                 env_set("buddy", "showdog");
435                 break;
436         case KBADC_BEAGLEFPGA:
437                 printf("Recognized KBADC Beagle FPGA board\n");
438                 MUX_KBADC_BEAGLEFPGA();
439                 env_set("buddy", "beaglefpga");
440                 break;
441         case LW_BEAGLETOUCH:
442                 printf("Recognized Liquidware BeagleTouch board\n");
443                 env_set("buddy", "beagletouch");
444                 break;
445         case BRAINMUX_LCDOG:
446                 printf("Recognized Brainmux LCDog board\n");
447                 env_set("buddy", "lcdog");
448                 break;
449         case BRAINMUX_LCDOGTOUCH:
450                 printf("Recognized Brainmux LCDog Touch board\n");
451                 env_set("buddy", "lcdogtouch");
452                 break;
453         case BBTOYS_WIFI:
454                 printf("Recognized BeagleBoardToys WiFi board\n");
455                 MUX_BBTOYS_WIFI()
456                 env_set("buddy", "bbtoys-wifi");
457                 break;
458         case BBTOYS_VGA:
459                 printf("Recognized BeagleBoardToys VGA board\n");
460                 break;
461         case BBTOYS_LCD:
462                 printf("Recognized BeagleBoardToys LCD board\n");
463                 break;
464         case BCT_BRETTL3:
465                 printf("Recognized bct electronic GmbH brettl3 board\n");
466                 break;
467         case BCT_BRETTL4:
468                 printf("Recognized bct electronic GmbH brettl4 board\n");
469                 break;
470         case LSR_COM6L_ADPT:
471                 printf("Recognized LSR COM6L Adapter Board\n");
472                 MUX_BBTOYS_WIFI()
473                 env_set("buddy", "lsr-com6l-adpt");
474                 break;
475         case BEAGLE_NO_EEPROM:
476                 printf("No EEPROM on expansion board\n");
477                 env_set("buddy", "none");
478                 break;
479         default:
480                 printf("Unrecognized expansion board: %x\n",
481                         expansion_config.device_vendor);
482                 env_set("buddy", "unknown");
483         }
484
485         if (expansion_config.content == 1)
486                 env_set(expansion_config.env_var, expansion_config.env_setting);
487
488         twl4030_power_init();
489         switch (get_board_revision()) {
490         case REVISION_XM_AB:
491                 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
492                 break;
493         default:
494                 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
495                 break;
496         }
497
498         /* Set GPIO states before they are made outputs */
499         writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
500                 &gpio6_base->setdataout);
501         writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
502                 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
503
504         /* Configure GPIOs to output */
505         writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
506         writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
507                 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
508
509         omap_die_id_display();
510
511 #ifdef CONFIG_VIDEO_OMAP3
512         beagle_dvi_pup();
513         beagle_display_init();
514         omap3_dss_enable();
515 #endif
516
517 #ifdef CONFIG_USB_MUSB_OMAP2PLUS
518         musb_register(&musb_plat, &musb_board_data, (void *)MUSB_BASE);
519 #endif
520
521         if (generate_fake_mac)
522                 omap_die_id_usbethaddr();
523
524         return 0;
525 }
526
527 /*
528  * Routine: set_muxconf_regs
529  * Description: Setting up the configuration Mux registers specific to the
530  *              hardware. Many pins need to be moved from protect to primary
531  *              mode.
532  */
533 void set_muxconf_regs(void)
534 {
535         MUX_BEAGLE();
536 }
537
538 #if defined(CONFIG_MMC)
539 int board_mmc_init(bd_t *bis)
540 {
541         return omap_mmc_init(0, 0, 0, -1, -1);
542 }
543 #endif
544
545 #if defined(CONFIG_MMC)
546 void board_mmc_power_init(void)
547 {
548         twl4030_power_mmc_init(0);
549 }
550 #endif
551
552 #if defined(CONFIG_USB_EHCI_HCD) && !defined(CONFIG_SPL_BUILD)
553 /* Call usb_stop() before starting the kernel */
554 void show_boot_progress(int val)
555 {
556         if (val == BOOTSTAGE_ID_RUN_OS)
557                 usb_stop();
558 }
559
560 static struct omap_usbhs_board_data usbhs_bdata = {
561         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
562         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
563         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
564 };
565
566 int ehci_hcd_init(int index, enum usb_init_type init,
567                 struct ehci_hccr **hccr, struct ehci_hcor **hcor)
568 {
569         return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
570 }
571
572 int ehci_hcd_stop(int index)
573 {
574         return omap_ehci_hcd_stop();
575 }
576
577 #endif /* CONFIG_USB_EHCI_HCD */
578
579 #if defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)
580 int board_eth_init(bd_t *bis)
581 {
582         return usb_eth_initialize(bis);
583 }
584 #endif