/*
 * 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.
 *
 * identify.c: identify machine by looking up system identifier
 *
 * Copyright (C) 1998 Thomas Bogendoerfer
 *
 * This code is based on arch/mips/sgi/kernel/system.c, which is
 *
 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
 */
#include <linux/bug.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/string.h>

#include <asm/sgialib.h>
#include <asm/bootinfo.h>

struct smatch {
        char *arcname;
        char *liname;
        int flags;
};

static struct smatch mach_table[] = {
        {
                .arcname        = "SGI-IP22",
                .liname         = "SGI Indy",
                .flags          = PROM_FLAG_ARCS,
        }, {
                .arcname        = "SGI-IP28",
                .liname         = "SGI IP28",
                .flags          = PROM_FLAG_ARCS,
        }, {
                .arcname        = "SGI-IP30",
                .liname         = "SGI Octane",
                .flags          = PROM_FLAG_ARCS,
        }, {
                .arcname        = "SGI-IP32",
                .liname         = "SGI O2",
                .flags          = PROM_FLAG_ARCS,
        }, {
                .arcname        = "Microsoft-Jazz",
                .liname         = "Jazz MIPS_Magnum_4000",
                .flags          = 0,
        }, {
                .arcname        = "PICA-61",
                .liname         = "Jazz Acer_PICA_61",
                .flags          = 0,
        }, {
                .arcname        = "RM200PCI",
                .liname         = "SNI RM200_PCI",
                .flags          = PROM_FLAG_DONT_FREE_TEMP,
        }, {
                .arcname        = "RM200PCI-R5K",
                .liname         = "SNI RM200_PCI-R5K",
                .flags          = PROM_FLAG_DONT_FREE_TEMP,
        }
};

int prom_flags;

static struct smatch * __init string_to_mach(const char *s)
{
        int i;

        for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
                if (!strcmp(s, mach_table[i].arcname))
                        return &mach_table[i];
        }

        panic("Yeee, could not determine architecture type <%s>", s);
}

char *system_type;

const char *get_system_type(void)
{
        return system_type;
}

static pcomponent * __init ArcGetChild(pcomponent *Current)
{
        return (pcomponent *) ARC_CALL1(child_component, Current);
}

void __init prom_identify_arch(void)
{
        pcomponent *p;
        struct smatch *mach;
        const char *iname;

        /*
         * The root component tells us what machine architecture we have here.
         */
        p = ArcGetChild(PROM_NULL_COMPONENT);
        if (p == NULL) {
                iname = "Unknown";
        } else
                iname = (char *) (long) p->iname;

        printk("ARCH: %s\n", iname);
        mach = string_to_mach(iname);
        system_type = mach->liname;

        prom_flags = mach->flags;
}