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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pm.c (1002B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Copyright 2011 Calxeda, Inc.
      4 */
      5
      6#include <linux/cpu_pm.h>
      7#include <linux/init.h>
      8#include <linux/psci.h>
      9#include <linux/suspend.h>
     10
     11#include <asm/suspend.h>
     12
     13#include <uapi/linux/psci.h>
     14
     15#define HIGHBANK_SUSPEND_PARAM \
     16	((0 << PSCI_0_2_POWER_STATE_ID_SHIFT) | \
     17	 (1 << PSCI_0_2_POWER_STATE_AFFL_SHIFT) | \
     18	 (PSCI_POWER_STATE_TYPE_POWER_DOWN << PSCI_0_2_POWER_STATE_TYPE_SHIFT))
     19
     20static int highbank_suspend_finish(unsigned long val)
     21{
     22	return psci_ops.cpu_suspend(HIGHBANK_SUSPEND_PARAM, __pa(cpu_resume));
     23}
     24
     25static int highbank_pm_enter(suspend_state_t state)
     26{
     27	cpu_pm_enter();
     28	cpu_cluster_pm_enter();
     29
     30	cpu_suspend(0, highbank_suspend_finish);
     31
     32	cpu_cluster_pm_exit();
     33	cpu_pm_exit();
     34
     35	return 0;
     36}
     37
     38static const struct platform_suspend_ops highbank_pm_ops = {
     39	.enter = highbank_pm_enter,
     40	.valid = suspend_valid_only_mem,
     41};
     42
     43void __init highbank_pm_init(void)
     44{
     45	if (!psci_ops.cpu_suspend)
     46		return;
     47
     48	suspend_set_ops(&highbank_pm_ops);
     49}