Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 *

 * PROM library initialisation code.

 *

 * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)

 */

#include <linux/init.h>

#include <linux/kernel.h>

#include <asm/bootinfo.h>

#include <asm/sgialib.h>

#undef DEBUG_PROM_INIT

/* Master romvec interface. */

struct linux_romvec *romvec;

int prom_argc;

LONG *_prom_argv, *_prom_envp;

void __init prom_init(void)

{

        PSYSTEM_PARAMETER_BLOCK pb = PROMBLOCK;

        romvec = ROMVECTOR;

        prom_argc = fw_arg0;

        _prom_argv = (LONG *) fw_arg1;

        _prom_envp = (LONG *) fw_arg2;

        if (pb->magic != 0x53435241) {

                printk(KERN_CRIT "Aieee, bad prom vector magic %08lx\n",

                       (unsigned long) pb->magic);

                while(1)

                        ;

        }

        prom_init_cmdline();

        prom_identify_arch();

        printk(KERN_INFO "PROMLIB: ARC firmware Version %d Revision %d\n",

               pb->ver, pb->rev);

        prom_meminit();

#ifdef DEBUG_PROM_INIT

        pr_info("Press a key to reboot\n");

        ArcRead(0, &c, 1, &cnt);

        ArcEnterInteractiveMode();

#endif

}