u-boot/board/netstar/netstar.c

/*
 * (C) Copyright 2005 2N TELEKOMUNIKACE, Ladislav Michl
 *
 * 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 <i2c.h>
#include <flash.h>
#include <nand.h>

#include <asm/io.h>

DECLARE_GLOBAL_DATA_PTR;

int board_init(void)
{
	/* arch number of NetStar board */
	gd->bd->bi_arch_number = MACH_TYPE_NETSTAR;

	/* adress of boot parameters */
	gd->bd->bi_boot_params = 0x10000100;

	return 0;
}

int dram_init(void)
{
	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;

	/* Take the Ethernet controller out of reset and wait
	 * for the EEPROM load to complete. */
	*((volatile unsigned short *) GPIO_DATA_OUTPUT_REG) |= 0x80;
	udelay(10);	/* doesn't work before timer_init call */
	*((volatile unsigned short *) GPIO_DATA_OUTPUT_REG) &= ~0x80;
	udelay(500);

	return 0;
}

int misc_init_r(void)
{
#if defined(CONFIG_RTC_DS1307)
	/* enable trickle charge */
	i2c_reg_write(CONFIG_SYS_I2C_RTC_ADDR, 0x10, 0xaa);
#endif
	return 0;
}

int board_late_init(void)
{
	return 0;
}

#if defined(CONFIG_CMD_FLASH)
ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t * info)
{
	if (banknum == 0) {	/* AM29LV800 boot flash */
		info->portwidth = FLASH_CFI_16BIT;
		info->chipwidth = FLASH_CFI_BY16;
		info->interface = FLASH_CFI_X16;
		return 1;
	}

	return 0;
}
#endif

#if defined(CONFIG_CMD_NAND)
/*
 *	hardware specific access to control-lines
 *
 *	NAND_NCE: bit 0 - don't care
 *	NAND_CLE: bit 1 -> bit 1  (0x0002)
 *	NAND_ALE: bit 2 -> bit 2  (0x0004)
 */
static void netstar_nand_hwcontrol(struct mtd_info *mtd, int cmd,
	unsigned int ctrl)
{
	struct nand_chip *chip = mtd->priv;
	unsigned long mask;

	if (cmd == NAND_CMD_NONE)
		return;

	mask = (ctrl & NAND_CLE) ? 0x02 : 0;
	if (ctrl & NAND_ALE)
		mask |= 0x04;
	writeb(cmd, (unsigned long)chip->IO_ADDR_W | mask);
}

int board_nand_init(struct nand_chip *nand)
{
	nand->options = NAND_SAMSUNG_LP_OPTIONS;
	nand->ecc.mode = NAND_ECC_SOFT;
	nand->cmd_ctrl = netstar_nand_hwcontrol;
	nand->chip_delay = 400;
	return 0;
}
#endif