mips_machine.c

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/*
 *  Copyright (C) 2008-2010 Gabor Juhos <[email protected]>
 *
 *  This program is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License version 2 as published
 *  by the Free Software Foundation.
 *
 */
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/slab.h>

#include <asm/mips_machine.h>

static struct mips_machine *mips_machine __initdata;
static char *mips_machine_name = "Unknown";

#define for_each_machine(mach) \
    for ((mach) = (struct mips_machine *)&__mips_machines_start; \
         (mach) && \
         (unsigned long)(mach) < (unsigned long)&__mips_machines_end; \
         (mach)++)

__init void mips_set_machine_name(const char *name)
{
    char *p;

    if (name == NULL)
        return;

    p = kstrdup(name, GFP_KERNEL);
    if (!p)
        pr_err("MIPS: no memory for machine_name\n");

    mips_machine_name = p;
}

char *mips_get_machine_name(void)
{
    return mips_machine_name;
}

__init int mips_machtype_setup(char *id)
{
    struct mips_machine *mach;

    for_each_machine(mach) {
        if (mach->mach_id == NULL)
            continue;

        if (strcmp(mach->mach_id, id) == 0) {
            mips_machtype = mach->mach_type;
            return 0;
        }
    }

    pr_err("MIPS: no machine found for id '%s', supported machines:\n", id);
    pr_err("%-24s %s\n", "id", "name");
    for_each_machine(mach)
        pr_err("%-24s %s\n", mach->mach_id, mach->mach_name);

    return 1;
}

__setup("machtype=", mips_machtype_setup);

__init void mips_machine_setup(void)
{
    struct mips_machine *mach;

    for_each_machine(mach) {
        if (mips_machtype == mach->mach_type) {
            mips_machine = mach;
            break;
        }
    }

    if (!mips_machine)
        return;

    mips_set_machine_name(mips_machine->mach_name);
    pr_info("MIPS: machine is %s\n", mips_machine_name);

    if (mips_machine->mach_setup)
        mips_machine->mach_setup();
}