target-arm/cpu64.c

   1 /*
   2  * QEMU AArch64 CPU
   3  *
   4  * Copyright (c) 2013 Linaro Ltd
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see
  18  * <http://www.gnu.org/licenses/gpl-2.0.html>
  19  */
  20
  21 #include "cpu.h"
  22 #include "qemu-common.h"
  23 #if !defined(CONFIG_USER_ONLY)
  24 #include "hw/loader.h"
  25 #endif
  26 #include "hw/arm/arm.h"
  27 #include "sysemu/sysemu.h"
  28 #include "sysemu/kvm.h"
  29
  30 static inline void set_feature(CPUARMState *env, int feature)
  31 {
  32     env->features |= 1ULL << feature;
  33 }
  34
  35 #ifdef CONFIG_USER_ONLY
  36 static void aarch64_any_initfn(Object *obj)
  37 {
  38     ARMCPU *cpu = ARM_CPU(obj);
  39
  40     set_feature(&cpu->env, ARM_FEATURE_V8);
  41     set_feature(&cpu->env, ARM_FEATURE_VFP4);
  42     set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
  43     set_feature(&cpu->env, ARM_FEATURE_NEON);
  44     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
  45     set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
  46     set_feature(&cpu->env, ARM_FEATURE_V7MP);
  47     set_feature(&cpu->env, ARM_FEATURE_AARCH64);
  48     cpu->ctr = 0x80030003; /* 32 byte I and D cacheline size, VIPT icache */
  49 }
  50 #endif
  51
  52 typedef struct ARMCPUInfo {
  53     const char *name;
  54     void (*initfn)(Object *obj);
  55     void (*class_init)(ObjectClass *oc, void *data);
  56 } ARMCPUInfo;
  57
  58 static const ARMCPUInfo aarch64_cpus[] = {
  59 #ifdef CONFIG_USER_ONLY
  60     { .name = "any",         .initfn = aarch64_any_initfn },
  61 #endif
  62     { .name = NULL }
  63 };
  64
  65 static void aarch64_cpu_initfn(Object *obj)
  66 {
  67 }
  68
  69 static void aarch64_cpu_finalizefn(Object *obj)
  70 {
  71 }
  72
  73 static void aarch64_cpu_set_pc(CPUState *cs, vaddr value)
  74 {
  75     ARMCPU *cpu = ARM_CPU(cs);
  76     /*
  77      * TODO: this will need updating for system emulation,
  78      * when the core may be in AArch32 mode.
  79      */
  80     cpu->env.pc = value;
  81 }
  82
  83 static void aarch64_cpu_class_init(ObjectClass *oc, void *data)
  84 {
  85     CPUClass *cc = CPU_CLASS(oc);
  86
  87     cc->dump_state = aarch64_cpu_dump_state;
  88     cc->set_pc = aarch64_cpu_set_pc;
  89     cc->gdb_read_register = aarch64_cpu_gdb_read_register;
  90     cc->gdb_write_register = aarch64_cpu_gdb_write_register;
  91     cc->gdb_num_core_regs = 34;
  92     cc->gdb_core_xml_file = "aarch64-core.xml";
  93 }
  94
  95 static void aarch64_cpu_register(const ARMCPUInfo *info)
  96 {
  97     TypeInfo type_info = {
  98         .parent = TYPE_AARCH64_CPU,
  99         .instance_size = sizeof(ARMCPU),
 100         .instance_init = info->initfn,
 101         .class_size = sizeof(ARMCPUClass),
 102         .class_init = info->class_init,
 103     };
 104
 105     type_info.name = g_strdup_printf("%s-" TYPE_ARM_CPU, info->name);
 106     type_register(&type_info);
 107     g_free((void *)type_info.name);
 108 }
 109
 110 static const TypeInfo aarch64_cpu_type_info = {
 111     .name = TYPE_AARCH64_CPU,
 112     .parent = TYPE_ARM_CPU,
 113     .instance_size = sizeof(ARMCPU),
 114     .instance_init = aarch64_cpu_initfn,
 115     .instance_finalize = aarch64_cpu_finalizefn,
 116     .abstract = true,
 117     .class_size = sizeof(AArch64CPUClass),
 118     .class_init = aarch64_cpu_class_init,
 119 };
 120
 121 static void aarch64_cpu_register_types(void)
 122 {
 123     const ARMCPUInfo *info = aarch64_cpus;
 124
 125     type_register_static(&aarch64_cpu_type_info);
 126
 127     while (info->name) {
 128         aarch64_cpu_register(info);
 129         info++;
 130     }
 131 }
 132
 133 type_init(aarch64_cpu_register_types)