u-boot-imx/board/davinci/sonata/sonata.c

/*
 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
 *
 * Parts are shamelessly stolen from various TI sources, original copyright
 * follows:
 * -----------------------------------------------------------------
 *
 * Copyright (C) 2004 Texas Instruments.
 *
 * ----------------------------------------------------------------------------
 * SPDX-License-Identifier:	GPL-2.0+
 * ----------------------------------------------------------------------------
 */

#include <common.h>
#include <nand.h>
#include <asm/arch/nand_defs.h>
#include <asm/arch/hardware.h>
#include <asm/arch/davinci_misc.h>

DECLARE_GLOBAL_DATA_PTR;

int board_init(void)
{
	/* address of boot parameters */
	gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;

	/* Configure AEMIF pins (although this should be configured at boot time
	 * with pull-up/pull-down resistors) */
	REG(PINMUX0) = 0x00000c1f;

	davinci_errata_workarounds();

	/* Power on required peripherals */
	lpsc_on(DAVINCI_LPSC_GPIO);

#if !defined(CONFIG_SYS_USE_DSPLINK)
	/* Powerup the DSP */
	dsp_on();
#endif /* CONFIG_SYS_USE_DSPLINK */

	davinci_enable_uart0();
	davinci_enable_emac();
	davinci_enable_i2c();

	lpsc_on(DAVINCI_LPSC_TIMER1);
	timer_init();

	return(0);
}

int misc_init_r(void)
{
	uint8_t eeprom_enetaddr[6];

	/* Read Ethernet MAC address from EEPROM if available. */
	if (dvevm_read_mac_address(eeprom_enetaddr))
		davinci_sync_env_enetaddr(eeprom_enetaddr);

	return(0);
}

#ifdef CONFIG_NAND_DAVINCI

/* Set WP on deselect, write enable on select */
static void nand_sonata_select_chip(struct mtd_info *mtd, int chip)
{
#define GPIO_SET_DATA01	0x01c67018
#define GPIO_CLR_DATA01	0x01c6701c
#define GPIO_NAND_WP	(1 << 4)
#ifdef SONATA_BOARD_GPIOWP
	if (chip < 0) {
		REG(GPIO_CLR_DATA01) |= GPIO_NAND_WP;
	} else {
		REG(GPIO_SET_DATA01) |= GPIO_NAND_WP;
	}
#endif
}

int board_nand_init(struct nand_chip *nand)
{
	davinci_nand_init(nand);
	nand->select_chip = nand_sonata_select_chip;
	return 0;
}

#endif /* CONFIG_NAND_DAVINCI */