board/shannon/shannon.c

/*
 * (C) Copyright 2002
 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Alex Zuepke <azu@sysgo.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>

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


/*
 * Miscelaneous platform dependent initialisations
 */

int board_init (void)
{
	DECLARE_GLOBAL_DATA_PTR;

	/* memory and cpu-speed are setup before relocation */
	/* but if we use InfernoLoader, we must do some inits here */

#ifdef CONFIG_INFERNO
	{
        unsigned long temp;
        __asm__ __volatile__(/* disable MMU, enable icache */
                             "mrc p15, 0, %0, c1, c0\n"
                             "bic %0, %0, #0x00002000\n"
                             "bic %0, %0, #0x0000000f\n"
                             "orr %0, %0, #0x00001000\n"
                             "orr %0, %0, #0x00000002\n"
                             "mcr p15, 0, %0, c1, c0\n"
                             /* flush caches */
                             "mov %0, #0\n"
                             "mcr p15, 0, %0, c7, c7, 0\n"
                             "mcr p15, 0, %0, c8, c7, 0\n"
                             : "=r" (temp)
                             :
                             : "memory");
        /* setup PCMCIA timing */
        temp = 0xa0000018;
        *(unsigned long *)temp = 0x00060006;

	}
#endif /* CONFIG_INIT_CRITICAL */

	/* arch number for shannon */
	gd->bd->bi_arch_number = 97;

	/* adress of boot parameters */
	gd->bd->bi_boot_params = 0xc0000100;

	return 0;
}

int dram_init (void)
{
#if defined(PHYS_SDRAM_1) || defined(PHYS_SDRAM_2) || \
    defined(PHYS_SDRAM_3) || defined(PHYS_SDRAM_4)
	DECLARE_GLOBAL_DATA_PTR;
	bd_t *bd = gd->bd;
#endif

#ifdef PHYS_SDRAM_1
	bd->bi_dram[0].start = PHYS_SDRAM_1;
	bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
#endif

#ifdef PHYS_SDRAM_2
	bd->bi_dram[1].start = PHYS_SDRAM_2;
	bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
#endif

#ifdef PHYS_SDRAM_3
	bd->bi_dram[2].start = PHYS_SDRAM_3;
	bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE;
#endif

#ifdef PHYS_SDRAM_4
	bd->bi_dram[3].start = PHYS_SDRAM_4;
	bd->bi_dram[3].size = PHYS_SDRAM_4_SIZE;
#endif

	return (0);
}