board/amcc/bubinga/bubinga.c

/*
 * (C) Copyright 2000-2005
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * 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 <asm/processor.h>
#include <asm/io.h>

long int spd_sdram(void);

int board_early_init_f(void)
{
	mtdcr(uicsr, 0xFFFFFFFF);	/* clear all ints */
	mtdcr(uicer, 0x00000000);	/* disable all ints */
	mtdcr(uiccr, 0x00000010);
	mtdcr(uicpr, 0xFFFF7FF0);	/* set int polarities */
	mtdcr(uictr, 0x00000010);	/* set int trigger levels */
	mtdcr(uicsr, 0xFFFFFFFF);	/* clear all ints */

	/*
	 * Configure CPC0_PCI to enable PerWE as output
	 * and enable the internal PCI arbiter if selected
	 */
	if (in_8((void *)FPGA_REG1) & FPGA_REG1_PCI_INT_ARB)
		mtdcr(cpc0_pci, CPC0_PCI_HOST_CFG_EN | CPC0_PCI_ARBIT_EN);
	else
		mtdcr(cpc0_pci, CPC0_PCI_HOST_CFG_EN);

	return 0;
}

/*
 * Check Board Identity:
 */
int checkboard(void)
{
	char *s = getenv("serial#");

	puts("Board: Bubinga - AMCC PPC405EP Evaluation Board");

	if (s != NULL) {
		puts(", serial# ");
		puts(s);
	}
	putc('\n');

	return (0);
}

/* -------------------------------------------------------------------------
  initdram(int board_type) reads EEPROM via I2c. EEPROM contains all of
  the necessary info for SDRAM controller configuration
   ------------------------------------------------------------------------- */
long int initdram(int board_type)
{
	long int ret;

	ret = spd_sdram();
	return ret;
}