cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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platform.c (658B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 * Copyright (C) 2009 Lemote Inc.
      4 * Author: Wu Zhangjin, wuzhangjin@gmail.com
      5 */
      6
      7#include <linux/err.h>
      8#include <linux/smp.h>
      9#include <linux/platform_device.h>
     10
     11static struct platform_device loongson2_cpufreq_device = {
     12	.name = "loongson2_cpufreq",
     13	.id = -1,
     14};
     15
     16static int __init loongson2_cpufreq_init(void)
     17{
     18	struct cpuinfo_mips *c = &current_cpu_data;
     19
     20	/* Only 2F revision and it's successors support CPUFreq */
     21	if ((c->processor_id & PRID_REV_MASK) >= PRID_REV_LOONGSON2F)
     22		return platform_device_register(&loongson2_cpufreq_device);
     23
     24	return -ENODEV;
     25}
     26
     27arch_initcall(loongson2_cpufreq_init);