2 * (C) Copyright 2004-2008
3 * Texas Instruments, <www.ti.com>
6 * Sunil Kumar <sunilsaini05@gmail.com>
7 * Shashi Ranjan <shashiranjanmca05@gmail.com>
9 * Derived from Beagle Board and 3430 SDP code by
10 * Richard Woodruff <r-woodruff2@ti.com>
11 * Syed Mohammed Khasim <khasim@ti.com>
14 * See file CREDITS for list of people who contributed to this
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.
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.
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,
33 #ifdef CONFIG_STATUS_LED
34 #include <status_led.h>
38 #include <asm/arch/mmc_host_def.h>
39 #include <asm/arch/mux.h>
40 #include <asm/arch/sys_proto.h>
42 #include <asm/mach-types.h>
43 #ifdef CONFIG_USB_EHCI
45 #include <asm/arch/clocks.h>
46 #include <asm/arch/clocks_omap3.h>
47 #include <asm/arch/ehci_omap3.h>
48 /* from drivers/usb/host/ehci-core.h */
49 extern struct ehci_hccr *hccr;
50 extern volatile struct ehci_hcor *hcor;
55 #define pr_debug(fmt, args...) debug(fmt, ##args)
57 #define TWL4030_I2C_BUS 0
58 #define EXPANSION_EEPROM_I2C_BUS 1
59 #define EXPANSION_EEPROM_I2C_ADDRESS 0x50
61 #define TINCANTOOLS_ZIPPY 0x01000100
62 #define TINCANTOOLS_ZIPPY2 0x02000100
63 #define TINCANTOOLS_TRAINER 0x04000100
64 #define TINCANTOOLS_SHOWDOG 0x03000100
65 #define KBADC_BEAGLEFPGA 0x01000600
66 #define LW_BEAGLETOUCH 0x01000700
67 #define BRAINMUX_LCDOG 0x01000800
68 #define BRAINMUX_LCDOGTOUCH 0x02000800
69 #define BBTOYS_WIFI 0x01000B00
70 #define BBTOYS_VGA 0x02000B00
71 #define BBTOYS_LCD 0x03000B00
72 #define BEAGLE_NO_EEPROM 0xffffffff
74 DECLARE_GLOBAL_DATA_PTR;
77 unsigned int device_vendor;
78 unsigned char revision;
79 unsigned char content;
87 * Description: Early hardware init.
91 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
92 /* board id for Linux */
93 gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
95 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
97 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
98 status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
105 * Routine: get_board_revision
106 * Description: Detect if we are running on a Beagle revision Ax/Bx,
107 * C1/2/3, C4 or xM. This can be done by reading
108 * the level of GPIO173, GPIO172 and GPIO171. This should
110 * GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
111 * GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
112 * GPIO173, GPIO172, GPIO171: 1 0 1 => C4
113 * GPIO173, GPIO172, GPIO171: 0 0 0 => xM
115 int get_board_revision(void)
119 if (!gpio_request(171, "") &&
120 !gpio_request(172, "") &&
121 !gpio_request(173, "")) {
123 gpio_direction_input(171);
124 gpio_direction_input(172);
125 gpio_direction_input(173);
127 revision = gpio_get_value(173) << 2 |
128 gpio_get_value(172) << 1 |
135 printf("Error: unable to acquire board revision GPIOs\n");
143 * Routine: get_expansion_id
144 * Description: This function checks for expansion board by checking I2C
145 * bus 1 for the availability of an AT24C01B serial EEPROM.
146 * returns the device_vendor field from the EEPROM
148 unsigned int get_expansion_id(void)
150 i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
152 /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
153 if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
154 i2c_set_bus_num(TWL4030_I2C_BUS);
155 return BEAGLE_NO_EEPROM;
158 /* read configuration data */
159 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
160 sizeof(expansion_config));
162 i2c_set_bus_num(TWL4030_I2C_BUS);
164 return expansion_config.device_vendor;
168 * Configure DSS to display background color on DVID
169 * Configure VENC to display color bar on S-Video
171 void beagle_display_init(void)
173 omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
174 switch (get_board_revision()) {
178 omap3_dss_panel_config(&dvid_cfg);
184 omap3_dss_panel_config(&dvid_cfg_xm);
190 * Routine: misc_init_r
191 * Description: Configure board specific parts
193 int misc_init_r(void)
195 struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
196 struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
197 struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
199 /* Enable i2c2 pullup resisters */
200 writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);
202 switch (get_board_revision()) {
204 printf("Beagle Rev Ax/Bx\n");
205 setenv("beaglerev", "AxBx");
208 printf("Beagle Rev C1/C2/C3\n");
209 setenv("beaglerev", "Cx");
213 printf("Beagle Rev C4\n");
214 setenv("beaglerev", "C4");
216 /* Set VAUX2 to 1.8V for EHCI PHY */
217 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
218 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
219 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
220 TWL4030_PM_RECEIVER_DEV_GRP_P1);
223 printf("Beagle xM Rev A\n");
224 setenv("beaglerev", "xMA");
226 /* Set VAUX2 to 1.8V for EHCI PHY */
227 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
228 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
229 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
230 TWL4030_PM_RECEIVER_DEV_GRP_P1);
233 printf("Beagle xM Rev B\n");
234 setenv("beaglerev", "xMB");
236 /* Set VAUX2 to 1.8V for EHCI PHY */
237 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
238 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
239 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
240 TWL4030_PM_RECEIVER_DEV_GRP_P1);
243 printf("Beagle xM Rev C\n");
244 setenv("beaglerev", "xMC");
246 /* Set VAUX2 to 1.8V for EHCI PHY */
247 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
248 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
249 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
250 TWL4030_PM_RECEIVER_DEV_GRP_P1);
253 printf("Beagle unknown 0x%02x\n", get_board_revision());
255 /* Set VAUX2 to 1.8V for EHCI PHY */
256 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
257 TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
258 TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
259 TWL4030_PM_RECEIVER_DEV_GRP_P1);
262 switch (get_expansion_id()) {
263 case TINCANTOOLS_ZIPPY:
264 printf("Recognized Tincantools Zippy board (rev %d %s)\n",
265 expansion_config.revision,
266 expansion_config.fab_revision);
267 MUX_TINCANTOOLS_ZIPPY();
268 setenv("buddy", "zippy");
270 case TINCANTOOLS_ZIPPY2:
271 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
272 expansion_config.revision,
273 expansion_config.fab_revision);
274 MUX_TINCANTOOLS_ZIPPY();
275 setenv("buddy", "zippy2");
277 case TINCANTOOLS_TRAINER:
278 printf("Recognized Tincantools Trainer board (rev %d %s)\n",
279 expansion_config.revision,
280 expansion_config.fab_revision);
281 MUX_TINCANTOOLS_ZIPPY();
282 MUX_TINCANTOOLS_TRAINER();
283 setenv("buddy", "trainer");
285 case TINCANTOOLS_SHOWDOG:
286 printf("Recognized Tincantools Showdow board (rev %d %s)\n",
287 expansion_config.revision,
288 expansion_config.fab_revision);
289 /* Place holder for DSS2 definition for showdog lcd */
290 setenv("defaultdisplay", "showdoglcd");
291 setenv("buddy", "showdog");
293 case KBADC_BEAGLEFPGA:
294 printf("Recognized KBADC Beagle FPGA board\n");
295 MUX_KBADC_BEAGLEFPGA();
296 setenv("buddy", "beaglefpga");
299 printf("Recognized Liquidware BeagleTouch board\n");
300 setenv("buddy", "beagletouch");
303 printf("Recognized Brainmux LCDog board\n");
304 setenv("buddy", "lcdog");
306 case BRAINMUX_LCDOGTOUCH:
307 printf("Recognized Brainmux LCDog Touch board\n");
308 setenv("buddy", "lcdogtouch");
311 printf("Recognized BeagleBoardToys WiFi board\n");
313 setenv("buddy", "bbtoys-wifi");
316 printf("Recognized BeagleBoardToys VGA board\n");
319 printf("Recognized BeagleBoardToys LCD board\n");
321 case BEAGLE_NO_EEPROM:
322 printf("No EEPROM on expansion board\n");
323 setenv("buddy", "none");
326 printf("Unrecognized expansion board: %x\n",
327 expansion_config.device_vendor);
328 setenv("buddy", "unknown");
331 if (expansion_config.content == 1)
332 setenv(expansion_config.env_var, expansion_config.env_setting);
334 twl4030_power_init();
335 switch (get_board_revision()) {
338 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
341 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
345 /* Set GPIO states before they are made outputs */
346 writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
347 &gpio6_base->setdataout);
348 writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
349 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
351 /* Configure GPIOs to output */
352 writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
353 writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
354 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
357 beagle_display_init();
364 * Routine: set_muxconf_regs
365 * Description: Setting up the configuration Mux registers specific to the
366 * hardware. Many pins need to be moved from protect to primary
369 void set_muxconf_regs(void)
374 #ifdef CONFIG_GENERIC_MMC
375 int board_mmc_init(bd_t *bis)
382 #ifdef CONFIG_USB_EHCI
384 #define GPIO_PHY_RESET 147
386 /* Reset is needed otherwise the kernel-driver will throw an error. */
387 int ehci_hcd_stop(void)
389 pr_debug("Resetting OMAP3 EHCI\n");
390 gpio_set_value(GPIO_PHY_RESET, 0);
391 writel(OMAP_UHH_SYSCONFIG_SOFTRESET, OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG);
392 /* disable USB clocks */
393 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
394 sr32(&prcm_base->iclken_usbhost, 0, 1, 0);
395 sr32(&prcm_base->fclken_usbhost, 0, 2, 0);
396 sr32(&prcm_base->iclken3_core, 2, 1, 0);
397 sr32(&prcm_base->fclken3_core, 2, 1, 0);
401 /* Call usb_stop() before starting the kernel */
402 void show_boot_progress(int val)
409 * Initialize the OMAP3 EHCI controller and PHY on the BeagleBoard.
410 * Based on "drivers/usb/host/ehci-omap.c" from Linux 2.6.37.
411 * See there for additional Copyrights.
413 int ehci_hcd_init(void)
415 pr_debug("Initializing OMAP3 ECHI\n");
417 /* Put the PHY in RESET */
418 gpio_request(GPIO_PHY_RESET, "");
419 gpio_direction_output(GPIO_PHY_RESET, 0);
420 gpio_set_value(GPIO_PHY_RESET, 0);
422 /* Hold the PHY in RESET for enough time till DIR is high */
426 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
427 /* Enable USBHOST_L3_ICLK (USBHOST_MICLK) */
428 sr32(&prcm_base->iclken_usbhost, 0, 1, 1);
430 * Enable USBHOST_48M_FCLK (USBHOST_FCLK1)
431 * and USBHOST_120M_FCLK (USBHOST_FCLK2)
433 sr32(&prcm_base->fclken_usbhost, 0, 2, 3);
434 /* Enable USBTTL_ICLK */
435 sr32(&prcm_base->iclken3_core, 2, 1, 1);
436 /* Enable USBTTL_FCLK */
437 sr32(&prcm_base->fclken3_core, 2, 1, 1);
438 pr_debug("USB clocks enabled\n");
440 /* perform TLL soft reset, and wait until reset is complete */
441 writel(OMAP_USBTLL_SYSCONFIG_SOFTRESET,
442 OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG);
443 /* Wait for TLL reset to complete */
444 while (!(readl(OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSSTATUS)
445 & OMAP_USBTLL_SYSSTATUS_RESETDONE));
446 pr_debug("TLL reset done\n");
448 writel(OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
449 OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
450 OMAP_USBTLL_SYSCONFIG_CACTIVITY,
451 OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG);
453 /* Put UHH in NoIdle/NoStandby mode */
454 writel(OMAP_UHH_SYSCONFIG_ENAWAKEUP
455 | OMAP_UHH_SYSCONFIG_SIDLEMODE
456 | OMAP_UHH_SYSCONFIG_CACTIVITY
457 | OMAP_UHH_SYSCONFIG_MIDLEMODE,
458 OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG);
460 /* setup burst configurations */
461 writel(OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
462 | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN
463 | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN,
464 OMAP3_UHH_BASE + OMAP_UHH_HOSTCONFIG);
468 * Hold the PHY in RESET for enough time till
469 * PHY is settled and ready
472 gpio_set_value(GPIO_PHY_RESET, 1);
474 hccr = (struct ehci_hccr *)(OMAP3_EHCI_BASE);
475 hcor = (struct ehci_hcor *)(OMAP3_EHCI_BASE + 0x10);
477 pr_debug("OMAP3 EHCI init done\n");
481 #endif /* CONFIG_USB_EHCI */
484 * This command returns the status of the user button on beagle xM
486 * Returns - 1 if button is held down
487 * 0 if button is not held down
489 int do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
495 * pass address parameter as argv[0] (aka command name),
496 * and all remaining args
498 switch (get_board_revision()) {
511 gpio_request(gpio, "");
512 gpio_direction_input(gpio);
513 printf("The user button is currently ");
514 if (gpio_get_value(gpio))
517 printf("PRESSED.\n");
522 printf("NOT pressed.\n");
530 /* -------------------------------------------------------------------- */
533 userbutton, CONFIG_SYS_MAXARGS, 1, do_userbutton,
534 "Return the status of the BeagleBoard USER button",