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Diffstat (limited to 'u-boot/board/ti/beagle/beagle.c')
-rw-r--r-- | u-boot/board/ti/beagle/beagle.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/u-boot/board/ti/beagle/beagle.c b/u-boot/board/ti/beagle/beagle.c new file mode 100644 index 0000000..8dbf6a8 --- /dev/null +++ b/u-boot/board/ti/beagle/beagle.c @@ -0,0 +1,275 @@ +/* + * (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> +#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/arch/gpio.h> +#include <asm/mach-types.h> +#include "beagle.h" + +#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 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); + + 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; + + switch (get_board_revision()) { + case REVISION_AXBX: + printf("Beagle Rev Ax/Bx\n"); + setenv("beaglerev", "AxBx"); + setenv("mpurate", "600"); + break; + case REVISION_CX: + printf("Beagle Rev C1/C2/C3\n"); + setenv("beaglerev", "Cx"); + setenv("mpurate", "600"); + MUX_BEAGLE_C(); + break; + case REVISION_C4: + printf("Beagle Rev C4\n"); + setenv("beaglerev", "C4"); + setenv("mpurate", "720"); + 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: + printf("Beagle xM Rev A\n"); + setenv("beaglerev", "xMA"); + setenv("mpurate", "1000"); + 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()); + } + + 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 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); + + /* 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); + + /* Set GPIOs */ + writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1, + &gpio6_base->setdataout); + writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 | + GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout); + + 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 |