machtype.c

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/*
 * Copyright (C) 2009 Lemote Inc.
 * Author: Wu Zhangjin, [email protected]
 *
 * Copyright (c) 2009 Zhang Le <[email protected]>
 *
 * 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.
 */
#include <linux/errno.h>
#include <asm/bootinfo.h>

#include <loongson.h>
#include <machine.h>

/* please ensure the length of the machtype string is less than 50 */
#define MACHTYPE_LEN 50

static const char *system_types[] = {
    [MACH_LOONGSON_UNKNOWN]         "unknown loongson machine",
    [MACH_LEMOTE_FL2E]              "lemote-fuloong-2e-box",
    [MACH_LEMOTE_FL2F]              "lemote-fuloong-2f-box",
    [MACH_LEMOTE_ML2F7]             "lemote-mengloong-2f-7inches",
    [MACH_LEMOTE_YL2F89]            "lemote-yeeloong-2f-8.9inches",
    [MACH_DEXXON_GDIUM2F10]         "dexxon-gdium-2f",
    [MACH_LEMOTE_NAS]       "lemote-nas-2f",
    [MACH_LEMOTE_LL2F]              "lemote-lynloong-2f",
    [MACH_LOONGSON_END]             NULL,
};

const char *get_system_type(void)
{
    return system_types[mips_machtype];
}

void __weak __init mach_prom_init_machtype(void)
{
}

void __init prom_init_machtype(void)
{
    char *p, str[MACHTYPE_LEN + 1];
    int machtype = MACH_LEMOTE_FL2E;

    mips_machtype = LOONGSON_MACHTYPE;

    p = strstr(arcs_cmdline, "machtype=");
    if (!p) {
        mach_prom_init_machtype();
        return;
    }
    p += strlen("machtype=");
    strncpy(str, p, MACHTYPE_LEN);
    str[MACHTYPE_LEN] = '\0';
    p = strstr(str, " ");
    if (p)
        *p = '\0';

    for (; system_types[machtype]; machtype++)
        if (strstr(system_types[machtype], str)) {
            mips_machtype = machtype;
            break;
        }
}