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Diffstat (limited to 'u-boot/board/overo/overo.c')
| -rw-r--r-- | u-boot/board/overo/overo.c | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/u-boot/board/overo/overo.c b/u-boot/board/overo/overo.c new file mode 100644 index 0000000..4eafdb1 --- /dev/null +++ b/u-boot/board/overo/overo.c @@ -0,0 +1,351 @@ +/* + * Maintainer : Steve Sakoman <steve@sakoman.com> + * + * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by + * Richard Woodruff <r-woodruff2@ti.com> + * Syed Mohammed Khasim <khasim@ti.com> + * Sunil Kumar <sunilsaini05@gmail.com> + * Shashi Ranjan <shashiranjanmca05@gmail.com> + * + * (C) Copyright 2004-2008 + * Texas Instruments, <www.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 <netdev.h> +#include <twl4030.h> +#include <asm/io.h> +#include <asm/arch/mmc_host_def.h> +#include <asm/arch/mux.h> +#include <asm/arch/mem.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/gpio.h> +#include <asm/mach-types.h> +#include "overo.h" + +DECLARE_GLOBAL_DATA_PTR; + +#define TWL4030_I2C_BUS 0 +#define EXPANSION_EEPROM_I2C_BUS 2 +#define EXPANSION_EEPROM_I2C_ADDRESS 0x51 + +#define GUMSTIX_SUMMIT 0x01000200 +#define GUMSTIX_TOBI 0x02000200 +#define GUMSTIX_TOBI_DUO 0x03000200 +#define GUMSTIX_PALO35 0x04000200 +#define GUMSTIX_PALO43 0x05000200 +#define GUMSTIX_CHESTNUT43 0x06000200 +#define GUMSTIX_PINTO 0x07000200 +#define GUMSTIX_GALLOP43 0x08000200 + +#define ETTUS_USRP_E 0x01000300 + +#define GUMSTIX_NO_EEPROM 0xffffffff + +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; + +#if defined(CONFIG_CMD_NET) +static void setup_net_chip(void); +#endif + +/* GPMC definitions for LAN9221 chips on Tobi expansion boards */ +static const u32 gpmc_lan_config[] = { + NET_LAN9221_GPMC_CONFIG1, + NET_LAN9221_GPMC_CONFIG2, + NET_LAN9221_GPMC_CONFIG3, + NET_LAN9221_GPMC_CONFIG4, + NET_LAN9221_GPMC_CONFIG5, + NET_LAN9221_GPMC_CONFIG6, + /*CONFIG7- computed as params */ +}; + +/* + * 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_OVERO; + /* boot param addr */ + gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); + + return 0; +} + +/* + * Routine: get_board_revision + * Description: Returns the board revision + */ +int get_board_revision(void) +{ + int revision; + + if (!omap_request_gpio(112) && + !omap_request_gpio(113) && + !omap_request_gpio(115)) { + + omap_set_gpio_direction(112, 1); + omap_set_gpio_direction(113, 1); + omap_set_gpio_direction(115, 1); + + revision = omap_get_gpio_datain(115) << 2 | + omap_get_gpio_datain(113) << 1 | + omap_get_gpio_datain(112); + + omap_free_gpio(112); + omap_free_gpio(113); + omap_free_gpio(115); + } else { + printf("Error: unable to acquire board revision GPIOs\n"); + revision = -1; + } + + return revision; +} + +/* + * Routine: get_sdio2_config + * Description: Return information about the wifi module connection + * Returns 0 if the module connects though a level translator + * Returns 1 if the module connects directly + */ +int get_sdio2_config(void) +{ + int sdio_direct; + + if (!omap_request_gpio(130) && !omap_request_gpio(139)) { + + omap_set_gpio_direction(130, 0); + omap_set_gpio_direction(139, 1); + + sdio_direct = 1; + omap_set_gpio_dataout(130, 0); + if (omap_get_gpio_datain(139) == 0) { + omap_set_gpio_dataout(130, 1); + if (omap_get_gpio_datain(139) == 1) + sdio_direct = 0; + } + + omap_free_gpio(130); + omap_free_gpio(139); + } else { + printf("Error: unable to acquire sdio2 clk GPIOs\n"); + sdio_direct = -1; + } + + return sdio_direct; +} + +/* + * Routine: get_expansion_id + * Description: This function checks for expansion board by checking I2C + * bus 2 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 GUMSTIX_NO_EEPROM if eeprom doesn't respond */ + if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) { + i2c_set_bus_num(TWL4030_I2C_BUS); + return GUMSTIX_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) +{ + twl4030_power_init(); + twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON); + +#if defined(CONFIG_CMD_NET) + setup_net_chip(); +#endif + + printf("Board revision: %d\n", get_board_revision()); + + switch (get_sdio2_config()) { + case 0: + printf("Tranceiver detected on mmc2\n"); + MUX_OVERO_SDIO2_TRANSCEIVER(); + break; + case 1: + printf("Direct connection on mmc2\n"); + MUX_OVERO_SDIO2_DIRECT(); + break; + default: + printf("Unable to detect mmc2 connection type\n"); + } + + switch (get_expansion_id()) { + case GUMSTIX_SUMMIT: + printf("Recognized Summit expansion board (rev %d %s)\n", + expansion_config.revision, + expansion_config.fab_revision); + setenv("defaultdisplay", "dvi"); + break; + case GUMSTIX_TOBI: + printf("Recognized Tobi expansion board (rev %d %s)\n", + expansion_config.revision, + expansion_config.fab_revision); + setenv("defaultdisplay", "dvi"); + break; + case GUMSTIX_TOBI_DUO: + printf("Recognized Tobi Duo expansion board (rev %d %s)\n", + expansion_config.revision, + expansion_config.fab_revision); + break; + case GUMSTIX_PALO35: + printf("Recognized Palo35 expansion board (rev %d %s)\n", + expansion_config.revision, + expansion_config.fab_revision); + setenv("defaultdisplay", "lcd35"); + break; + case GUMSTIX_PALO43: + printf("Recognized Palo43 expansion board (rev %d %s)\n", + expansion_config.revision, + expansion_config.fab_revision); + setenv("defaultdisplay", "lcd43"); + break; + case GUMSTIX_CHESTNUT43: + printf("Recognized Chestnut43 expansion board (rev %d %s)\n", + expansion_config.revision, + expansion_config.fab_revision); + setenv("defaultdisplay", "lcd43"); + break; + case GUMSTIX_PINTO: + printf("Recognized Pinto expansion board (rev %d %s)\n", + expansion_config.revision, + expansion_config.fab_revision); + break; + case GUMSTIX_GALLOP43: + printf("Recognized Gallop43 expansion board (rev %d %s)\n", + expansion_config.revision, + expansion_config.fab_revision); + setenv("defaultdisplay", "lcd43"); + break; + case ETTUS_USRP_E: + printf("Recognized Ettus Research USRP-E (rev %d %s)\n", + expansion_config.revision, + expansion_config.fab_revision); + MUX_USRP_E(); + setenv("defaultdisplay", "dvi"); + break; + case GUMSTIX_NO_EEPROM: + printf("No EEPROM on expansion board\n"); + break; + default: + printf("Unrecognized expansion board\n"); + } + + if (expansion_config.content == 1) + setenv(expansion_config.env_var, expansion_config.env_setting); + + 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_OVERO(); +} + +#if defined(CONFIG_CMD_NET) +/* + * Routine: setup_net_chip + * Description: Setting up the configuration GPMC registers specific to the + * Ethernet hardware. + */ +static void setup_net_chip(void) +{ + struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE; + + /* first lan chip */ + enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5], 0x2C000000, + GPMC_SIZE_16M); + + /* second lan chip */ + enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[4], 0x2B000000, + GPMC_SIZE_16M); + + /* Enable off mode for NWE in PADCONF_GPMC_NWE register */ + writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe); + /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */ + writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe); + /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */ + writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00, + &ctrl_base->gpmc_nadv_ale); + + /* Make GPIO 64 as output pin and send a magic pulse through it */ + if (!omap_request_gpio(64)) { + omap_set_gpio_direction(64, 0); + omap_set_gpio_dataout(64, 1); + udelay(1); + omap_set_gpio_dataout(64, 0); + udelay(1); + omap_set_gpio_dataout(64, 1); + } +} +#endif + +int board_eth_init(bd_t *bis) +{ + int rc = 0; +#ifdef CONFIG_SMC911X + rc = smc911x_initialize(0, CONFIG_SMC911X_BASE); +#endif + return rc; +} + +#ifdef CONFIG_GENERIC_MMC +int board_mmc_init(bd_t *bis) +{ + omap_mmc_init(0); + return 0; +} +#endif |