board/sbc405/sbc405.c

/*
 * (C) Copyright 2001
 *
 * 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 <command.h>
#include <malloc.h>
#include <spd_sdram.h>


int board_early_init_f (void)
{
	/*
	 * IRQ 0-15  405GP internally generated; active high; level sensitive
	 * IRQ 16    405GP internally generated; active low; level sensitive
	 * IRQ 17-24 RESERVED
	 * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
	 * IRQ 26 (EXT IRQ 1) SER0 ; active low; level sensitive
	 * IRQ 27 (EXT IRQ 2) SER1; active low; level sensitive
	 * IRQ 28 (EXT IRQ 3) FPGA 0; active low; level sensitive
	 * IRQ 29 (EXT IRQ 4) FPGA 1; active low; level sensitive
	 * IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive
	 * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
	 */
	mtdcr(UIC0SR, 0xFFFFFFFF);       /* clear all ints */
	mtdcr(UIC0ER, 0x00000000);       /* disable all ints */
	mtdcr(UIC0CR, 0x00000000);       /* set all to be non-critical*/
	mtdcr(UIC0PR, 0xFFFFFF81);       /* set int polarities */
	mtdcr(UIC0TR, 0x10000000);       /* set int trigger levels */
	mtdcr(UIC0VCR, 0x00000001);      /* set vect base=0,INT0 highest priority*/
	mtdcr(UIC0SR, 0xFFFFFFFF);       /* clear all ints */

	/*
	 * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us
	 */
	mtebc (EBC0_CFG, 0xa8400000);

	return 0;
}


/* ------------------------------------------------------------------------- */

int misc_init_f (void)
{
	return 0;  /* dummy implementation */
}


int misc_init_r (void)
{
	return (0);
}


/*
 * Check Board Identity:
 */

int checkboard (void)
{
	char str[64];
	int i = getenv_f("serial#", str, sizeof(str));

	puts ("Board: ");

	if (i == -1) {
		puts ("### No HW ID - assuming sbc405");
	} else {
		puts(str);
	}

	putc ('\n');

	return 0;
}

/* ------------------------------------------------------------------------- */

phys_size_t initdram (int board_type)
{
	return  spd_sdram ();
}

/* ------------------------------------------------------------------------- */

int testdram (void)
{
	/* TODO: XXX XXX XXX */
	printf ("test: 64 MB - ok\n");

	return (0);
}

/* ------------------------------------------------------------------------- */