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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smp-up.c (1575B)

      1/*
      2 * This file is subject to the terms and conditions of the GNU General Public
      3 * License.  See the file "COPYING" in the main directory of this archive
      4 * for more details.
      5 *
      6 * Copyright (C) 2006, 07 by Ralf Baechle (ralf@linux-mips.org)
      7 *
      8 * Symmetric Uniprocessor (TM) Support
      9 */
     10#include <linux/kernel.h>
     11#include <linux/sched.h>
     12
     13/*
     14 * Send inter-processor interrupt
     15 */
     16static void up_send_ipi_single(int cpu, unsigned int action)
     17{
     18	panic(KERN_ERR "%s called", __func__);
     19}
     20
     21static inline void up_send_ipi_mask(const struct cpumask *mask,
     22				    unsigned int action)
     23{
     24	panic(KERN_ERR "%s called", __func__);
     25}
     26
     27/*
     28 *  After we've done initial boot, this function is called to allow the
     29 *  board code to clean up state, if needed
     30 */
     31static void up_init_secondary(void)
     32{
     33}
     34
     35static void up_smp_finish(void)
     36{
     37}
     38
     39/*
     40 * Firmware CPU startup hook
     41 */
     42static int up_boot_secondary(int cpu, struct task_struct *idle)
     43{
     44	return 0;
     45}
     46
     47static void __init up_smp_setup(void)
     48{
     49}
     50
     51static void __init up_prepare_cpus(unsigned int max_cpus)
     52{
     53}
     54
     55#ifdef CONFIG_HOTPLUG_CPU
     56static int up_cpu_disable(void)
     57{
     58	return -ENOSYS;
     59}
     60
     61static void up_cpu_die(unsigned int cpu)
     62{
     63	BUG();
     64}
     65#endif
     66
     67const struct plat_smp_ops up_smp_ops = {
     68	.send_ipi_single	= up_send_ipi_single,
     69	.send_ipi_mask		= up_send_ipi_mask,
     70	.init_secondary		= up_init_secondary,
     71	.smp_finish		= up_smp_finish,
     72	.boot_secondary		= up_boot_secondary,
     73	.smp_setup		= up_smp_setup,
     74	.prepare_cpus		= up_prepare_cpus,
     75#ifdef CONFIG_HOTPLUG_CPU
     76	.cpu_disable		= up_cpu_disable,
     77	.cpu_die		= up_cpu_die,
     78#endif
     79};