| /* |
| * (C) Copyright 2004-2008 |
| * Texas Instruments, <www.ti.com> |
| * |
| * Author : |
| * Sunil Kumar <sunilsaini05@gmail.com> |
| * Shashi Ranjan <shashiranjanmca05@gmail.com> |
| * |
| * Derived from Beagle Board and 3430 SDP code by |
| * Richard Woodruff <r-woodruff2@ti.com> |
| * Syed Mohammed Khasim <khasim@ti.com> |
| * |
| * |
| * 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 <common.h> |
| #ifdef CONFIG_STATUS_LED |
| #include <status_led.h> |
| #endif |
| #include <twl4030.h> |
| #include <asm/io.h> |
| #include <asm/arch/mmc_host_def.h> |
| #include <asm/arch/mux.h> |
| #include <asm/arch/sys_proto.h> |
| #include <asm/gpio.h> |
| #include <asm/mach-types.h> |
| #ifdef CONFIG_USB_EHCI |
| #include <usb.h> |
| #include <asm/arch/clocks.h> |
| #include <asm/arch/clocks_omap3.h> |
| #include <asm/arch/ehci_omap3.h> |
| /* from drivers/usb/host/ehci-core.h */ |
| extern struct ehci_hccr *hccr; |
| extern volatile struct ehci_hcor *hcor; |
| #endif |
| #include "beagle.h" |
| #include <command.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 (!gpio_request(171, "") && |
| !gpio_request(172, "") && |
| !gpio_request(173, "")) { |
| |
| gpio_direction_input(171); |
| gpio_direction_input(172); |
| gpio_direction_input(173); |
| |
| revision = gpio_get_value(173) << 2 | |
| gpio_get_value(172) << 1 | |
| gpio_get_value(171); |
| } 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; |
| } |
| |
| /* |
| * Configure DSS to display background color on DVID |
| * Configure VENC to display color bar on S-Video |
| */ |
| void beagle_display_init(void) |
| { |
| omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH); |
| switch (get_board_revision()) { |
| case REVISION_AXBX: |
| case REVISION_CX: |
| case REVISION_C4: |
| omap3_dss_panel_config(&dvid_cfg); |
| break; |
| case REVISION_XM_A: |
| case REVISION_XM_B: |
| case REVISION_XM_C: |
| default: |
| omap3_dss_panel_config(&dvid_cfg_xm); |
| break; |
| } |
| } |
| |
| /* |
| * 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(); |
| switch (get_board_revision()) { |
| case REVISION_XM_A: |
| case REVISION_XM_B: |
| twl4030_led_init(TWL4030_LED_LEDEN_LEDBON); |
| break; |
| default: |
| twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); |
| break; |
| } |
| |
| /* 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(); |
| beagle_display_init(); |
| omap3_dss_enable(); |
| |
| 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"); |
| gpio_set_value(GPIO_PHY_RESET, 0); |
| writel(OMAP_UHH_SYSCONFIG_SOFTRESET, OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG); |
| /* disable USB clocks */ |
| struct prcm *prcm_base = (struct prcm *)PRCM_BASE; |
| sr32(&prcm_base->iclken_usbhost, 0, 1, 0); |
| sr32(&prcm_base->fclken_usbhost, 0, 2, 0); |
| sr32(&prcm_base->iclken3_core, 2, 1, 0); |
| sr32(&prcm_base->fclken3_core, 2, 1, 0); |
| 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 */ |
| gpio_request(GPIO_PHY_RESET, ""); |
| gpio_direction_output(GPIO_PHY_RESET, 0); |
| gpio_set_value(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); |
| gpio_set_value(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 */ |
| |
| /* |
| * This command returns the status of the user button on beagle xM |
| * Input - none |
| * Returns - 1 if button is held down |
| * 0 if button is not held down |
| */ |
| int do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| { |
| int button = 0; |
| int gpio; |
| |
| /* |
| * pass address parameter as argv[0] (aka command name), |
| * and all remaining args |
| */ |
| switch (get_board_revision()) { |
| case REVISION_AXBX: |
| case REVISION_CX: |
| case REVISION_C4: |
| gpio = 7; |
| break; |
| case REVISION_XM_A: |
| case REVISION_XM_B: |
| case REVISION_XM_C: |
| default: |
| gpio = 4; |
| break; |
| } |
| gpio_request(gpio, ""); |
| gpio_direction_input(gpio); |
| printf("The user button is currently "); |
| if (gpio_get_value(gpio)) |
| { |
| button = 1; |
| printf("PRESSED.\n"); |
| } |
| else |
| { |
| button = 0; |
| printf("NOT pressed.\n"); |
| } |
| |
| return !button; |
| } |
| |
| /* -------------------------------------------------------------------- */ |
| |
| U_BOOT_CMD( |
| userbutton, CONFIG_SYS_MAXARGS, 1, do_userbutton, |
| "Return the status of the BeagleBoard USER button", |
| "" |
| ); |