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 static inline void unset_feature(CPUARMState *env, int feature)
  36 {
  37     env->features &= ~(1ULL << feature);
  38 }
  39
  40 #ifndef CONFIG_USER_ONLY
  41 static uint64_t a57_l2ctlr_read(CPUARMState *env, const ARMCPRegInfo *ri)
  42 {
  43     /* Number of processors is in [25:24]; otherwise we RAZ */
  44     return (smp_cpus - 1) << 24;
  45 }
  46 #endif
  47
  48 static const ARMCPRegInfo cortexa57_cp_reginfo[] = {
  49 #ifndef CONFIG_USER_ONLY
  50     { .name = "L2CTLR_EL1", .state = ARM_CP_STATE_AA64,
  51       .opc0 = 3, .opc1 = 1, .crn = 11, .crm = 0, .opc2 = 2,
  52       .access = PL1_RW, .readfn = a57_l2ctlr_read,
  53       .writefn = arm_cp_write_ignore },
  54     { .name = "L2CTLR",
  55       .cp = 15, .opc1 = 1, .crn = 9, .crm = 0, .opc2 = 2,
  56       .access = PL1_RW, .readfn = a57_l2ctlr_read,
  57       .writefn = arm_cp_write_ignore },
  58 #endif
  59     { .name = "L2ECTLR_EL1", .state = ARM_CP_STATE_AA64,
  60       .opc0 = 3, .opc1 = 1, .crn = 11, .crm = 0, .opc2 = 3,
  61       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
  62     { .name = "L2ECTLR",
  63       .cp = 15, .opc1 = 1, .crn = 9, .crm = 0, .opc2 = 3,
  64       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
  65     { .name = "L2ACTLR", .state = ARM_CP_STATE_BOTH,
  66       .opc0 = 3, .opc1 = 1, .crn = 15, .crm = 0, .opc2 = 0,
  67       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
  68     { .name = "CPUACTLR_EL1", .state = ARM_CP_STATE_AA64,
  69       .opc0 = 3, .opc1 = 1, .crn = 15, .crm = 2, .opc2 = 0,
  70       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
  71     { .name = "CPUACTLR",
  72       .cp = 15, .opc1 = 0, .crm = 15,
  73       .access = PL1_RW, .type = ARM_CP_CONST | ARM_CP_64BIT, .resetvalue = 0 },
  74     { .name = "CPUECTLR_EL1", .state = ARM_CP_STATE_AA64,
  75       .opc0 = 3, .opc1 = 1, .crn = 15, .crm = 2, .opc2 = 1,
  76       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
  77     { .name = "CPUECTLR",
  78       .cp = 15, .opc1 = 1, .crm = 15,
  79       .access = PL1_RW, .type = ARM_CP_CONST | ARM_CP_64BIT, .resetvalue = 0 },
  80     { .name = "CPUMERRSR_EL1", .state = ARM_CP_STATE_AA64,
  81       .opc0 = 3, .opc1 = 1, .crn = 15, .crm = 2, .opc2 = 2,
  82       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
  83     { .name = "CPUMERRSR",
  84       .cp = 15, .opc1 = 2, .crm = 15,
  85       .access = PL1_RW, .type = ARM_CP_CONST | ARM_CP_64BIT, .resetvalue = 0 },
  86     { .name = "L2MERRSR_EL1", .state = ARM_CP_STATE_AA64,
  87       .opc0 = 3, .opc1 = 1, .crn = 15, .crm = 2, .opc2 = 3,
  88       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
  89     { .name = "L2MERRSR",
  90       .cp = 15, .opc1 = 3, .crm = 15,
  91       .access = PL1_RW, .type = ARM_CP_CONST | ARM_CP_64BIT, .resetvalue = 0 },
  92     REGINFO_SENTINEL
  93 };
  94
  95 static void aarch64_a57_initfn(Object *obj)
  96 {
  97     ARMCPU *cpu = ARM_CPU(obj);
  98
  99     cpu->dtb_compatible = "arm,cortex-a57";
 100     set_feature(&cpu->env, ARM_FEATURE_V8);
 101     set_feature(&cpu->env, ARM_FEATURE_VFP4);
 102     set_feature(&cpu->env, ARM_FEATURE_NEON);
 103     set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
 104     set_feature(&cpu->env, ARM_FEATURE_AARCH64);
 105     set_feature(&cpu->env, ARM_FEATURE_CBAR_RO);
 106     set_feature(&cpu->env, ARM_FEATURE_V8_AES);
 107     set_feature(&cpu->env, ARM_FEATURE_V8_SHA1);
 108     set_feature(&cpu->env, ARM_FEATURE_V8_SHA256);
 109     set_feature(&cpu->env, ARM_FEATURE_V8_PMULL);
 110     set_feature(&cpu->env, ARM_FEATURE_CRC);
 111     cpu->kvm_target = QEMU_KVM_ARM_TARGET_CORTEX_A57;
 112     cpu->midr = 0x411fd070;
 113     cpu->reset_fpsid = 0x41034070;
 114     cpu->mvfr0 = 0x10110222;
 115     cpu->mvfr1 = 0x12111111;
 116     cpu->mvfr2 = 0x00000043;
 117     cpu->ctr = 0x8444c004;
 118     cpu->reset_sctlr = 0x00c50838;
 119     cpu->id_pfr0 = 0x00000131;
 120     cpu->id_pfr1 = 0x00011011;
 121     cpu->id_dfr0 = 0x03010066;
 122     cpu->id_afr0 = 0x00000000;
 123     cpu->id_mmfr0 = 0x10101105;
 124     cpu->id_mmfr1 = 0x40000000;
 125     cpu->id_mmfr2 = 0x01260000;
 126     cpu->id_mmfr3 = 0x02102211;
 127     cpu->id_isar0 = 0x02101110;
 128     cpu->id_isar1 = 0x13112111;
 129     cpu->id_isar2 = 0x21232042;
 130     cpu->id_isar3 = 0x01112131;
 131     cpu->id_isar4 = 0x00011142;
 132     cpu->id_isar5 = 0x00011121;
 133     cpu->id_aa64pfr0 = 0x00002222;
 134     cpu->id_aa64dfr0 = 0x10305106;
 135     cpu->id_aa64isar0 = 0x00011120;
 136     cpu->id_aa64mmfr0 = 0x00001124;
 137     cpu->dbgdidr = 0x3516d000;
 138     cpu->clidr = 0x0a200023;
 139     cpu->ccsidr[0] = 0x701fe00a; /* 32KB L1 dcache */
 140     cpu->ccsidr[1] = 0x201fe012; /* 48KB L1 icache */
 141     cpu->ccsidr[2] = 0x70ffe07a; /* 2048KB L2 cache */
 142     cpu->dcz_blocksize = 4; /* 64 bytes */
 143     define_arm_cp_regs(cpu, cortexa57_cp_reginfo);
 144 }
 145
 146 #ifdef CONFIG_USER_ONLY
 147 static void aarch64_any_initfn(Object *obj)
 148 {
 149     ARMCPU *cpu = ARM_CPU(obj);
 150
 151     set_feature(&cpu->env, ARM_FEATURE_V8);
 152     set_feature(&cpu->env, ARM_FEATURE_VFP4);
 153     set_feature(&cpu->env, ARM_FEATURE_NEON);
 154     set_feature(&cpu->env, ARM_FEATURE_AARCH64);
 155     set_feature(&cpu->env, ARM_FEATURE_V8_AES);
 156     set_feature(&cpu->env, ARM_FEATURE_V8_SHA1);
 157     set_feature(&cpu->env, ARM_FEATURE_V8_SHA256);
 158     set_feature(&cpu->env, ARM_FEATURE_V8_PMULL);
 159     set_feature(&cpu->env, ARM_FEATURE_CRC);
 160     cpu->ctr = 0x80038003; /* 32 byte I and D cacheline size, VIPT icache */
 161     cpu->dcz_blocksize = 7; /*  512 bytes */
 162 }
 163 #endif
 164
 165 typedef struct ARMCPUInfo {
 166     const char *name;
 167     void (*initfn)(Object *obj);
 168     void (*class_init)(ObjectClass *oc, void *data);
 169 } ARMCPUInfo;
 170
 171 static const ARMCPUInfo aarch64_cpus[] = {
 172     { .name = "cortex-a57",         .initfn = aarch64_a57_initfn },
 173 #ifdef CONFIG_USER_ONLY
 174     { .name = "any",         .initfn = aarch64_any_initfn },
 175 #endif
 176     { .name = NULL }
 177 };
 178
 179 static bool aarch64_cpu_get_aarch64(Object *obj, Error **errp)
 180 {
 181     ARMCPU *cpu = ARM_CPU(obj);
 182
 183     return arm_feature(&cpu->env, ARM_FEATURE_AARCH64);
 184 }
 185
 186 static void aarch64_cpu_set_aarch64(Object *obj, bool value, Error **errp)
 187 {
 188     ARMCPU *cpu = ARM_CPU(obj);
 189
 190     /* At this time, this property is only allowed if KVM is enabled.  This
 191      * restriction allows us to avoid fixing up functionality that assumes a
 192      * uniform execution state like do_interrupt.
 193      */
 194     if (!kvm_enabled()) {
 195         error_setg(errp, "'aarch64' feature cannot be disabled "
 196                          "unless KVM is enabled");
 197         return;
 198     }
 199
 200     if (value == false) {
 201         unset_feature(&cpu->env, ARM_FEATURE_AARCH64);
 202     } else {
 203         set_feature(&cpu->env, ARM_FEATURE_AARCH64);
 204     }
 205 }
 206
 207 static void aarch64_cpu_initfn(Object *obj)
 208 {
 209     object_property_add_bool(obj, "aarch64", aarch64_cpu_get_aarch64,
 210                              aarch64_cpu_set_aarch64, NULL);
 211     object_property_set_description(obj, "aarch64",
 212                                     "Set on/off to enable/disable aarch64 "
 213                                     "execution state ",
 214                                     NULL);
 215 }
 216
 217 static void aarch64_cpu_finalizefn(Object *obj)
 218 {
 219 }
 220
 221 static void aarch64_cpu_set_pc(CPUState *cs, vaddr value)
 222 {
 223     ARMCPU *cpu = ARM_CPU(cs);
 224     /* It's OK to look at env for the current mode here, because it's
 225      * never possible for an AArch64 TB to chain to an AArch32 TB.
 226      * (Otherwise we would need to use synchronize_from_tb instead.)
 227      */
 228     if (is_a64(&cpu->env)) {
 229         cpu->env.pc = value;
 230     } else {
 231         cpu->env.regs[15] = value;
 232     }
 233 }
 234
 235 static void aarch64_cpu_class_init(ObjectClass *oc, void *data)
 236 {
 237     CPUClass *cc = CPU_CLASS(oc);
 238
 239 #if !defined(CONFIG_USER_ONLY)
 240     cc->do_interrupt = aarch64_cpu_do_interrupt;
 241 #endif
 242     cc->cpu_exec_interrupt = arm_cpu_exec_interrupt;
 243     cc->set_pc = aarch64_cpu_set_pc;
 244     cc->gdb_read_register = aarch64_cpu_gdb_read_register;
 245     cc->gdb_write_register = aarch64_cpu_gdb_write_register;
 246     cc->gdb_num_core_regs = 34;
 247     cc->gdb_core_xml_file = "aarch64-core.xml";
 248 }
 249
 250 static void aarch64_cpu_register(const ARMCPUInfo *info)
 251 {
 252     TypeInfo type_info = {
 253         .parent = TYPE_AARCH64_CPU,
 254         .instance_size = sizeof(ARMCPU),
 255         .instance_init = info->initfn,
 256         .class_size = sizeof(ARMCPUClass),
 257         .class_init = info->class_init,
 258     };
 259
 260     type_info.name = g_strdup_printf("%s-" TYPE_ARM_CPU, info->name);
 261     type_register(&type_info);
 262     g_free((void *)type_info.name);
 263 }
 264
 265 static const TypeInfo aarch64_cpu_type_info = {
 266     .name = TYPE_AARCH64_CPU,
 267     .parent = TYPE_ARM_CPU,
 268     .instance_size = sizeof(ARMCPU),
 269     .instance_init = aarch64_cpu_initfn,
 270     .instance_finalize = aarch64_cpu_finalizefn,
 271     .abstract = true,
 272     .class_size = sizeof(AArch64CPUClass),
 273     .class_init = aarch64_cpu_class_init,
 274 };
 275
 276 static void aarch64_cpu_register_types(void)
 277 {
 278     const ARMCPUInfo *info = aarch64_cpus;
 279
 280     type_register_static(&aarch64_cpu_type_info);
 281
 282     while (info->name) {
 283         aarch64_cpu_register(info);
 284         info++;
 285     }
 286 }
 287
 288 type_init(aarch64_cpu_register_types)