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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sys-manager-core.c (1401B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 *  PS3 System Manager core.
      4 *
      5 *  Copyright (C) 2007 Sony Computer Entertainment Inc.
      6 *  Copyright 2007 Sony Corp.
      7 */
      8
      9#include <linux/kernel.h>
     10#include <linux/export.h>
     11#include <asm/lv1call.h>
     12#include <asm/ps3.h>
     13
     14/**
     15 * Staticly linked routines that allow late binding of a loaded sys-manager
     16 * module.
     17 */
     18
     19static struct ps3_sys_manager_ops ps3_sys_manager_ops;
     20
     21/**
     22 * ps3_register_sys_manager_ops - Bind ps3_sys_manager_ops to a module.
     23 * @ops: struct ps3_sys_manager_ops.
     24 *
     25 * To be called from ps3_sys_manager_probe() and ps3_sys_manager_remove() to
     26 * register call back ops for power control.  Copies data to the static
     27 * variable ps3_sys_manager_ops.
     28 */
     29
     30void ps3_sys_manager_register_ops(const struct ps3_sys_manager_ops *ops)
     31{
     32	BUG_ON(!ops);
     33	BUG_ON(!ops->dev);
     34	ps3_sys_manager_ops = *ops;
     35}
     36EXPORT_SYMBOL_GPL(ps3_sys_manager_register_ops);
     37
     38void __noreturn ps3_sys_manager_power_off(void)
     39{
     40	if (ps3_sys_manager_ops.power_off)
     41		ps3_sys_manager_ops.power_off(ps3_sys_manager_ops.dev);
     42
     43	ps3_sys_manager_halt();
     44}
     45
     46void __noreturn ps3_sys_manager_restart(void)
     47{
     48	if (ps3_sys_manager_ops.restart)
     49		ps3_sys_manager_ops.restart(ps3_sys_manager_ops.dev);
     50
     51	ps3_sys_manager_halt();
     52}
     53
     54void __noreturn ps3_sys_manager_halt(void)
     55{
     56	pr_emerg("System Halted, OK to turn off power\n");
     57	local_irq_disable();
     58	while (1)
     59		lv1_pause(1);
     60}
     61