u-boot/board/pandora/pandora.c

/*
 * (C) Copyright 2008
 * Grazvydas Ignotas <notasas@gmail.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 <twl4030.h>
#include <asm/io.h>
#include <asm/arch/mux.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-types.h>
#include "pandora.h"

DECLARE_GLOBAL_DATA_PTR;

#define TWL4030_BB_CFG_BBCHEN		(1 << 4)
#define TWL4030_BB_CFG_BBSEL_3200MV	(3 << 2)
#define TWL4030_BB_CFG_BBISEL_500UA	2

/*
 * 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_PANDORA;
	/* boot param addr */
	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);

	return 0;
}

/*
 * Routine: misc_init_r
 * Description: Configure board specific parts
 */
int misc_init_r(void)
{
	struct gpio *gpio1_base = (struct gpio *)OMAP34XX_GPIO1_BASE;
	struct gpio *gpio4_base = (struct gpio *)OMAP34XX_GPIO4_BASE;
	struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
	struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;

	twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);

	/* Configure GPIOs to output */
	writel(~(GPIO14 | GPIO15 | GPIO16 | GPIO23), &gpio1_base->oe);
	writel(~GPIO22, &gpio4_base->oe);	/* 118 */
	writel(~(GPIO0 | GPIO1 | GPIO28 | GPIO29 | GPIO30 | GPIO31),
		&gpio5_base->oe);	/* 128, 129, 156-159 */
	writel(~GPIO4, &gpio6_base->oe);	/* 164 */

	/* Set GPIOs */
	writel(GPIO28, &gpio5_base->setdataout);
	writel(GPIO4, &gpio6_base->setdataout);

	/* Enable battery backup capacitor (3.2V, 0.5mA charge current) */
	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
		TWL4030_BB_CFG_BBCHEN | TWL4030_BB_CFG_BBSEL_3200MV |
		TWL4030_BB_CFG_BBISEL_500UA, TWL4030_PM_RECEIVER_BB_CFG);

	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_PANDORA();
}