/* * (C) Copyright 2004-2008 * Texas Instruments, * * Author : * Sunil Kumar * Shashi Ranjan * * Derived from Beagle Board and 3430 SDP code by * Richard Woodruff * Syed Mohammed Khasim * * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include #ifdef CONFIG_STATUS_LED #include #endif #include #include #include #include #include #include #include #ifdef CONFIG_USB_EHCI #include #include #include #include /* from drivers/usb/host/ehci-core.h */ extern struct ehci_hccr *hccr; extern volatile struct ehci_hcor *hcor; #endif #include "beagle.h" #define pr_debug(fmt, args...) debug(fmt, ##args) #define TWL4030_I2C_BUS 0 #define EXPANSION_EEPROM_I2C_BUS 1 #define EXPANSION_EEPROM_I2C_ADDRESS 0x50 #define TINCANTOOLS_ZIPPY 0x01000100 #define TINCANTOOLS_ZIPPY2 0x02000100 #define TINCANTOOLS_TRAINER 0x04000100 #define TINCANTOOLS_SHOWDOG 0x03000100 #define KBADC_BEAGLEFPGA 0x01000600 #define LW_BEAGLETOUCH 0x01000700 #define BRAINMUX_LCDOG 0x01000800 #define BRAINMUX_LCDOGTOUCH 0x02000800 #define BBTOYS_WIFI 0x01000B00 #define BBTOYS_VGA 0x02000B00 #define BBTOYS_LCD 0x03000B00 #define BEAGLE_NO_EEPROM 0xffffffff DECLARE_GLOBAL_DATA_PTR; static struct { unsigned int device_vendor; unsigned char revision; unsigned char content; char fab_revision[8]; char env_var[16]; char env_setting[64]; } expansion_config; /* * Routine: board_init * Description: Early hardware init. */ int board_init(void) { gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ /* board id for Linux */ gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE; /* boot param addr */ gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT) status_led_set (STATUS_LED_BOOT, STATUS_LED_ON); #endif return 0; } /* * Routine: get_board_revision * Description: Detect if we are running on a Beagle revision Ax/Bx, * C1/2/3, C4 or xM. This can be done by reading * the level of GPIO173, GPIO172 and GPIO171. This should * result in * GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx * GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3 * GPIO173, GPIO172, GPIO171: 1 0 1 => C4 * GPIO173, GPIO172, GPIO171: 0 0 0 => xM */ int get_board_revision(void) { int revision; if (!omap_request_gpio(171) && !omap_request_gpio(172) && !omap_request_gpio(173)) { omap_set_gpio_direction(171, 1); omap_set_gpio_direction(172, 1); omap_set_gpio_direction(173, 1); revision = omap_get_gpio_datain(173) << 2 | omap_get_gpio_datain(172) << 1 | omap_get_gpio_datain(171); omap_free_gpio(171); omap_free_gpio(172); omap_free_gpio(173); } else { printf("Error: unable to acquire board revision GPIOs\n"); revision = -1; } return revision; } /* * Routine: get_expansion_id * Description: This function checks for expansion board by checking I2C * bus 1 for the availability of an AT24C01B serial EEPROM. * returns the device_vendor field from the EEPROM */ unsigned int get_expansion_id(void) { i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS); /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */ if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) { i2c_set_bus_num(TWL4030_I2C_BUS); return BEAGLE_NO_EEPROM; } /* read configuration data */ i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config, sizeof(expansion_config)); i2c_set_bus_num(TWL4030_I2C_BUS); return expansion_config.device_vendor; } /* * Routine: misc_init_r * Description: Configure board specific parts */ int misc_init_r(void) { struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE; struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE; struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE; /* Enable i2c2 pullup resisters */ writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1); switch (get_board_revision()) { case REVISION_AXBX: printf("Beagle Rev Ax/Bx\n"); setenv("beaglerev", "AxBx"); break; case REVISION_CX: printf("Beagle Rev C1/C2/C3\n"); setenv("beaglerev", "Cx"); MUX_BEAGLE_C(); break; case REVISION_C4: printf("Beagle Rev C4\n"); setenv("beaglerev", "C4"); MUX_BEAGLE_C(); /* Set VAUX2 to 1.8V for EHCI PHY */ twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, TWL4030_PM_RECEIVER_VAUX2_VSEL_18, TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, TWL4030_PM_RECEIVER_DEV_GRP_P1); break; case REVISION_XM_A: printf("Beagle xM Rev A\n"); setenv("beaglerev", "xMA"); MUX_BEAGLE_XM(); /* Set VAUX2 to 1.8V for EHCI PHY */ twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, TWL4030_PM_RECEIVER_VAUX2_VSEL_18, TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, TWL4030_PM_RECEIVER_DEV_GRP_P1); break; case REVISION_XM_B: printf("Beagle xM Rev B\n"); setenv("beaglerev", "xMB"); MUX_BEAGLE_XM(); /* Set VAUX2 to 1.8V for EHCI PHY */ twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, TWL4030_PM_RECEIVER_VAUX2_VSEL_18, TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, TWL4030_PM_RECEIVER_DEV_GRP_P1); break; case REVISION_XM_C: printf("Beagle xM Rev C\n"); setenv("beaglerev", "xMC"); MUX_BEAGLE_XM(); /* Set VAUX2 to 1.8V for EHCI PHY */ twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, TWL4030_PM_RECEIVER_VAUX2_VSEL_18, TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, TWL4030_PM_RECEIVER_DEV_GRP_P1); break; default: printf("Beagle unknown 0x%02x\n", get_board_revision()); MUX_BEAGLE_XM(); /* Set VAUX2 to 1.8V for EHCI PHY */ twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED, TWL4030_PM_RECEIVER_VAUX2_VSEL_18, TWL4030_PM_RECEIVER_VAUX2_DEV_GRP, TWL4030_PM_RECEIVER_DEV_GRP_P1); } switch (get_expansion_id()) { case TINCANTOOLS_ZIPPY: printf("Recognized Tincantools Zippy board (rev %d %s)\n", expansion_config.revision, expansion_config.fab_revision); MUX_TINCANTOOLS_ZIPPY(); setenv("buddy", "zippy"); break; case TINCANTOOLS_ZIPPY2: printf("Recognized Tincantools Zippy2 board (rev %d %s)\n", expansion_config.revision, expansion_config.fab_revision); MUX_TINCANTOOLS_ZIPPY(); setenv("buddy", "zippy2"); break; case TINCANTOOLS_TRAINER: printf("Recognized Tincantools Trainer board (rev %d %s)\n", expansion_config.revision, expansion_config.fab_revision); MUX_TINCANTOOLS_ZIPPY(); MUX_TINCANTOOLS_TRAINER(); setenv("buddy", "trainer"); break; case TINCANTOOLS_SHOWDOG: printf("Recognized Tincantools Showdow board (rev %d %s)\n", expansion_config.revision, expansion_config.fab_revision); /* Place holder for DSS2 definition for showdog lcd */ setenv("defaultdisplay", "showdoglcd"); setenv("buddy", "showdog"); break; case KBADC_BEAGLEFPGA: printf("Recognized KBADC Beagle FPGA board\n"); MUX_KBADC_BEAGLEFPGA(); setenv("buddy", "beaglefpga"); break; case LW_BEAGLETOUCH: printf("Recognized Liquidware BeagleTouch board\n"); setenv("buddy", "beagletouch"); break; case BRAINMUX_LCDOG: printf("Recognized Brainmux LCDog board\n"); setenv("buddy", "lcdog"); break; case BRAINMUX_LCDOGTOUCH: printf("Recognized Brainmux LCDog Touch board\n"); setenv("buddy", "lcdogtouch"); break; case BBTOYS_WIFI: printf("Recognized BeagleBoardToys WiFi board\n"); MUX_BBTOYS_WIFI() setenv("buddy", "bbtoys-wifi"); break;; case BBTOYS_VGA: printf("Recognized BeagleBoardToys VGA board\n"); break;; case BBTOYS_LCD: printf("Recognized BeagleBoardToys LCD board\n"); break;; case BEAGLE_NO_EEPROM: printf("No EEPROM on expansion board\n"); setenv("buddy", "none"); break; default: printf("Unrecognized expansion board: %x\n", expansion_config.device_vendor); setenv("buddy", "unknown"); } if (expansion_config.content == 1) setenv(expansion_config.env_var, expansion_config.env_setting); twl4030_power_init(); twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); /* Set GPIO states before they are made outputs */ writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1, &gpio6_base->setdataout); writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout); /* Configure GPIOs to output */ writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe); writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe); dieid_num_r(); return 0; } /* * Routine: set_muxconf_regs * Description: Setting up the configuration Mux registers specific to the * hardware. Many pins need to be moved from protect to primary * mode. */ void set_muxconf_regs(void) { MUX_BEAGLE(); } #ifdef CONFIG_GENERIC_MMC int board_mmc_init(bd_t *bis) { omap_mmc_init(0); return 0; } #endif #ifdef CONFIG_USB_EHCI #define GPIO_PHY_RESET 147 /* Reset is needed otherwise the kernel-driver will throw an error. */ int ehci_hcd_stop(void) { pr_debug("Resetting OMAP3 EHCI\n"); omap_set_gpio_dataout(GPIO_PHY_RESET, 0); writel(OMAP_UHH_SYSCONFIG_SOFTRESET, OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG); return 0; } /* Call usb_stop() before starting the kernel */ void show_boot_progress(int val) { if(val == 15) usb_stop(); } /* * Initialize the OMAP3 EHCI controller and PHY on the BeagleBoard. * Based on "drivers/usb/host/ehci-omap.c" from Linux 2.6.37. * See there for additional Copyrights. */ int ehci_hcd_init(void) { pr_debug("Initializing OMAP3 ECHI\n"); /* Put the PHY in RESET */ omap_request_gpio(GPIO_PHY_RESET); omap_set_gpio_direction(GPIO_PHY_RESET, 0); omap_set_gpio_dataout(GPIO_PHY_RESET, 0); /* Hold the PHY in RESET for enough time till DIR is high */ /* Refer: ISSUE1 */ udelay(10); struct prcm *prcm_base = (struct prcm *)PRCM_BASE; /* Enable USBHOST_L3_ICLK (USBHOST_MICLK) */ sr32(&prcm_base->iclken_usbhost, 0, 1, 1); /* * Enable USBHOST_48M_FCLK (USBHOST_FCLK1) * and USBHOST_120M_FCLK (USBHOST_FCLK2) */ sr32(&prcm_base->fclken_usbhost, 0, 2, 3); /* Enable USBTTL_ICLK */ sr32(&prcm_base->iclken3_core, 2, 1, 1); /* Enable USBTTL_FCLK */ sr32(&prcm_base->fclken3_core, 2, 1, 1); pr_debug("USB clocks enabled\n"); /* perform TLL soft reset, and wait until reset is complete */ writel(OMAP_USBTLL_SYSCONFIG_SOFTRESET, OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG); /* Wait for TLL reset to complete */ while (!(readl(OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSSTATUS) & OMAP_USBTLL_SYSSTATUS_RESETDONE)); pr_debug("TLL reset done\n"); writel(OMAP_USBTLL_SYSCONFIG_ENAWAKEUP | OMAP_USBTLL_SYSCONFIG_SIDLEMODE | OMAP_USBTLL_SYSCONFIG_CACTIVITY, OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG); /* Put UHH in NoIdle/NoStandby mode */ writel(OMAP_UHH_SYSCONFIG_ENAWAKEUP | OMAP_UHH_SYSCONFIG_SIDLEMODE | OMAP_UHH_SYSCONFIG_CACTIVITY | OMAP_UHH_SYSCONFIG_MIDLEMODE, OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG); /* setup burst configurations */ writel(OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN, OMAP3_UHH_BASE + OMAP_UHH_HOSTCONFIG); /* * Refer ISSUE1: * Hold the PHY in RESET for enough time till * PHY is settled and ready */ udelay(10); omap_set_gpio_dataout(GPIO_PHY_RESET, 1); hccr = (struct ehci_hccr *)(OMAP3_EHCI_BASE); hcor = (struct ehci_hcor *)(OMAP3_EHCI_BASE + 0x10); pr_debug("OMAP3 EHCI init done\n"); return 0; } #endif /* CONFIG_USB_EHCI */