target-s390x/cpu.c

   1 /*
   2  * QEMU S/390 CPU
   3  *
   4  * Copyright (c) 2009 Ulrich Hecht
   5  * Copyright (c) 2011 Alexander Graf
   6  * Copyright (c) 2012 SUSE LINUX Products GmbH
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, see
  20  * <http://www.gnu.org/licenses/lgpl-2.1.html>
  21  */
  22
  23 #include "cpu.h"
  24 #include "qemu-common.h"
  25 #include "qemu/timer.h"
  26 #ifndef CONFIG_USER_ONLY
  27 #include "sysemu/arch_init.h"
  28 #endif
  29
  30 /* generate CPU information for cpu -? */
  31 void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf)
  32 {
  33 #ifdef CONFIG_KVM
  34     (*cpu_fprintf)(f, "s390 %16s\n", "host");
  35 #endif
  36 }
  37
  38 #ifndef CONFIG_USER_ONLY
  39 CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
  40 {
  41     CpuDefinitionInfoList *entry;
  42     CpuDefinitionInfo *info;
  43
  44     info = g_malloc0(sizeof(*info));
  45     info->name = g_strdup("host");
  46
  47     entry = g_malloc0(sizeof(*entry));
  48     entry->value = info;
  49
  50     return entry;
  51 }
  52 #endif
  53
  54 /* CPUClass::reset() */
  55 static void s390_cpu_reset(CPUState *s)
  56 {
  57     S390CPU *cpu = S390_CPU(s);
  58     S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
  59     CPUS390XState *env = &cpu->env;
  60
  61     if (qemu_loglevel_mask(CPU_LOG_RESET)) {
  62         qemu_log("CPU Reset (CPU %d)\n", s->cpu_index);
  63         log_cpu_state(env, 0);
  64     }
  65
  66     scc->parent_reset(s);
  67
  68     memset(env, 0, offsetof(CPUS390XState, breakpoints));
  69     /* FIXME: reset vector? */
  70     tlb_flush(env, 1);
  71     s390_add_running_cpu(env);
  72 }
  73
  74 static void s390_cpu_initfn(Object *obj)
  75 {
  76     S390CPU *cpu = S390_CPU(obj);
  77     CPUS390XState *env = &cpu->env;
  78     static int cpu_num = 0;
  79 #if !defined(CONFIG_USER_ONLY)
  80     struct tm tm;
  81 #endif
  82
  83     cpu_exec_init(env);
  84 #if !defined(CONFIG_USER_ONLY)
  85     qemu_get_timedate(&tm, 0);
  86     env->tod_offset = TOD_UNIX_EPOCH +
  87                       (time2tod(mktimegm(&tm)) * 1000000000ULL);
  88     env->tod_basetime = 0;
  89     env->tod_timer = qemu_new_timer_ns(vm_clock, s390x_tod_timer, cpu);
  90     env->cpu_timer = qemu_new_timer_ns(vm_clock, s390x_cpu_timer, cpu);
  91 #endif
  92     env->cpu_num = cpu_num++;
  93     env->ext_index = -1;
  94
  95     cpu_reset(CPU(cpu));
  96 }
  97
  98 static void s390_cpu_class_init(ObjectClass *oc, void *data)
  99 {
 100     S390CPUClass *scc = S390_CPU_CLASS(oc);
 101     CPUClass *cc = CPU_CLASS(scc);
 102
 103     scc->parent_reset = cc->reset;
 104     cc->reset = s390_cpu_reset;
 105 }
 106
 107 static const TypeInfo s390_cpu_type_info = {
 108     .name = TYPE_S390_CPU,
 109     .parent = TYPE_CPU,
 110     .instance_size = sizeof(S390CPU),
 111     .instance_init = s390_cpu_initfn,
 112     .abstract = false,
 113     .class_size = sizeof(S390CPUClass),
 114     .class_init = s390_cpu_class_init,
 115 };
 116
 117 static void s390_cpu_register_types(void)
 118 {
 119     type_register_static(&s390_cpu_type_info);
 120 }
 121
 122 type_init(s390_cpu_register_types)