| /* |
| * QEMU S/390 CPU |
| * |
| * Copyright (c) 2009 Ulrich Hecht |
| * Copyright (c) 2011 Alexander Graf |
| * Copyright (c) 2012 SUSE LINUX Products GmbH |
| * Copyright (c) 2012 IBM Corp. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, see |
| * <http://www.gnu.org/licenses/lgpl-2.1.html> |
| * Contributions after 2012-12-11 are licensed under the terms of the |
| * GNU GPL, version 2 or (at your option) any later version. |
| */ |
| |
| #include "cpu.h" |
| #include "qemu-common.h" |
| #include "qemu/timer.h" |
| #ifndef CONFIG_USER_ONLY |
| #include "hw/hw.h" |
| #include "sysemu/arch_init.h" |
| #endif |
| |
| #define CR0_RESET 0xE0UL |
| #define CR14_RESET 0xC2000000UL; |
| |
| /* generate CPU information for cpu -? */ |
| void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf) |
| { |
| #ifdef CONFIG_KVM |
| (*cpu_fprintf)(f, "s390 %16s\n", "host"); |
| #endif |
| } |
| |
| #ifndef CONFIG_USER_ONLY |
| CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp) |
| { |
| CpuDefinitionInfoList *entry; |
| CpuDefinitionInfo *info; |
| |
| info = g_malloc0(sizeof(*info)); |
| info->name = g_strdup("host"); |
| |
| entry = g_malloc0(sizeof(*entry)); |
| entry->value = info; |
| |
| return entry; |
| } |
| #endif |
| |
| /* CPUClass::reset() */ |
| static void s390_cpu_reset(CPUState *s) |
| { |
| S390CPU *cpu = S390_CPU(s); |
| S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); |
| CPUS390XState *env = &cpu->env; |
| |
| if (qemu_loglevel_mask(CPU_LOG_RESET)) { |
| qemu_log("CPU Reset (CPU %d)\n", s->cpu_index); |
| log_cpu_state(env, 0); |
| } |
| |
| s390_del_running_cpu(env); |
| |
| scc->parent_reset(s); |
| |
| memset(env, 0, offsetof(CPUS390XState, breakpoints)); |
| |
| /* architectured initial values for CR 0 and 14 */ |
| env->cregs[0] = CR0_RESET; |
| env->cregs[14] = CR14_RESET; |
| /* set halted to 1 to make sure we can add the cpu in |
| * s390_ipl_cpu code, where env->halted is set back to 0 |
| * after incrementing the cpu counter */ |
| #if !defined(CONFIG_USER_ONLY) |
| env->halted = 1; |
| #endif |
| tlb_flush(env, 1); |
| } |
| |
| #if !defined(CONFIG_USER_ONLY) |
| static void s390_cpu_machine_reset_cb(void *opaque) |
| { |
| S390CPU *cpu = opaque; |
| |
| cpu_reset(CPU(cpu)); |
| } |
| #endif |
| |
| static void s390_cpu_initfn(Object *obj) |
| { |
| S390CPU *cpu = S390_CPU(obj); |
| CPUS390XState *env = &cpu->env; |
| static int cpu_num = 0; |
| #if !defined(CONFIG_USER_ONLY) |
| struct tm tm; |
| #endif |
| |
| cpu_exec_init(env); |
| #if !defined(CONFIG_USER_ONLY) |
| qemu_register_reset(s390_cpu_machine_reset_cb, cpu); |
| qemu_get_timedate(&tm, 0); |
| env->tod_offset = TOD_UNIX_EPOCH + |
| (time2tod(mktimegm(&tm)) * 1000000000ULL); |
| env->tod_basetime = 0; |
| env->tod_timer = qemu_new_timer_ns(vm_clock, s390x_tod_timer, cpu); |
| env->cpu_timer = qemu_new_timer_ns(vm_clock, s390x_cpu_timer, cpu); |
| /* set env->halted state to 1 to avoid decrementing the running |
| * cpu counter in s390_cpu_reset to a negative number at |
| * initial ipl */ |
| env->halted = 1; |
| #endif |
| env->cpu_num = cpu_num++; |
| env->ext_index = -1; |
| |
| cpu_reset(CPU(cpu)); |
| } |
| |
| static void s390_cpu_finalize(Object *obj) |
| { |
| #if !defined(CONFIG_USER_ONLY) |
| S390CPU *cpu = S390_CPU(obj); |
| |
| qemu_unregister_reset(s390_cpu_machine_reset_cb, cpu); |
| #endif |
| } |
| |
| static void s390_cpu_class_init(ObjectClass *oc, void *data) |
| { |
| S390CPUClass *scc = S390_CPU_CLASS(oc); |
| CPUClass *cc = CPU_CLASS(scc); |
| |
| scc->parent_reset = cc->reset; |
| cc->reset = s390_cpu_reset; |
| } |
| |
| static const TypeInfo s390_cpu_type_info = { |
| .name = TYPE_S390_CPU, |
| .parent = TYPE_CPU, |
| .instance_size = sizeof(S390CPU), |
| .instance_init = s390_cpu_initfn, |
| .instance_finalize = s390_cpu_finalize, |
| .abstract = false, |
| .class_size = sizeof(S390CPUClass), |
| .class_init = s390_cpu_class_init, |
| }; |
| |
| static void s390_cpu_register_types(void) |
| { |
| type_register_static(&s390_cpu_type_info); |
| } |
| |
| type_init(s390_cpu_register_types) |