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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     set_feature(&cpu->env, ARM_FEATURE_V8);
100     set_feature(&cpu->env, ARM_FEATURE_VFP4);
101     set_feature(&cpu->env, ARM_FEATURE_NEON);
102     set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
103     set_feature(&cpu->env, ARM_FEATURE_AARCH64);
104     set_feature(&cpu->env, ARM_FEATURE_CBAR_RO);
105     set_feature(&cpu->env, ARM_FEATURE_V8_AES);
106     set_feature(&cpu->env, ARM_FEATURE_V8_SHA1);
107     set_feature(&cpu->env, ARM_FEATURE_V8_SHA256);
108     set_feature(&cpu->env, ARM_FEATURE_V8_PMULL);
109     set_feature(&cpu->env, ARM_FEATURE_CRC);
110     cpu->kvm_target = QEMU_KVM_ARM_TARGET_CORTEX_A57;
111     cpu->midr = 0x411fd070;
112     cpu->reset_fpsid = 0x41034070;
113     cpu->mvfr0 = 0x10110222;
114     cpu->mvfr1 = 0x12111111;
115     cpu->mvfr2 = 0x00000043;
116     cpu->ctr = 0x8444c004;
117     cpu->reset_sctlr = 0x00c50838;
118     cpu->id_pfr0 = 0x00000131;
119     cpu->id_pfr1 = 0x00011011;
120     cpu->id_dfr0 = 0x03010066;
121     cpu->id_afr0 = 0x00000000;
122     cpu->id_mmfr0 = 0x10101105;
123     cpu->id_mmfr1 = 0x40000000;
124     cpu->id_mmfr2 = 0x01260000;
125     cpu->id_mmfr3 = 0x02102211;
126     cpu->id_isar0 = 0x02101110;
127     cpu->id_isar1 = 0x13112111;
128     cpu->id_isar2 = 0x21232042;
129     cpu->id_isar3 = 0x01112131;
130     cpu->id_isar4 = 0x00011142;
131     cpu->id_isar5 = 0x00011121;
132     cpu->id_aa64pfr0 = 0x00002222;
133     cpu->id_aa64dfr0 = 0x10305106;
134     cpu->id_aa64isar0 = 0x00011120;
135     cpu->id_aa64mmfr0 = 0x00001124;
136     cpu->dbgdidr = 0x3516d000;
137     cpu->clidr = 0x0a200023;
138     cpu->ccsidr[0] = 0x701fe00a; /* 32KB L1 dcache */
139     cpu->ccsidr[1] = 0x201fe012; /* 48KB L1 icache */
140     cpu->ccsidr[2] = 0x70ffe07a; /* 2048KB L2 cache */
141     cpu->dcz_blocksize = 4; /* 64 bytes */
142     define_arm_cp_regs(cpu, cortexa57_cp_reginfo);
143 }
144
145 #ifdef CONFIG_USER_ONLY
146 static void aarch64_any_initfn(Object *obj)
147 {
148     ARMCPU *cpu = ARM_CPU(obj);
149
150     set_feature(&cpu->env, ARM_FEATURE_V8);
151     set_feature(&cpu->env, ARM_FEATURE_VFP4);
152     set_feature(&cpu->env, ARM_FEATURE_NEON);
153     set_feature(&cpu->env, ARM_FEATURE_AARCH64);
154     set_feature(&cpu->env, ARM_FEATURE_V8_AES);
155     set_feature(&cpu->env, ARM_FEATURE_V8_SHA1);
156     set_feature(&cpu->env, ARM_FEATURE_V8_SHA256);
157     set_feature(&cpu->env, ARM_FEATURE_V8_PMULL);
158     set_feature(&cpu->env, ARM_FEATURE_CRC);
159     cpu->ctr = 0x80038003; /* 32 byte I and D cacheline size, VIPT icache */
160     cpu->dcz_blocksize = 7; /*  512 bytes */
161 }
162 #endif
163
164 typedef struct ARMCPUInfo {
165     const char *name;
166     void (*initfn)(Object *obj);
167     void (*class_init)(ObjectClass *oc, void *data);
168 } ARMCPUInfo;
169
170 static const ARMCPUInfo aarch64_cpus[] = {
171     { .name = "cortex-a57",         .initfn = aarch64_a57_initfn },
172 #ifdef CONFIG_USER_ONLY
173     { .name = "any",         .initfn = aarch64_any_initfn },
174 #endif
175     { .name = NULL }
176 };
177
178 static bool aarch64_cpu_get_aarch64(Object *obj, Error **errp)
179 {
180     ARMCPU *cpu = ARM_CPU(obj);
181
182     return arm_feature(&cpu->env, ARM_FEATURE_AARCH64);
183 }
184
185 static void aarch64_cpu_set_aarch64(Object *obj, bool value, Error **errp)
186 {
187     ARMCPU *cpu = ARM_CPU(obj);
188
189     /* At this time, this property is only allowed if KVM is enabled.  This
190      * restriction allows us to avoid fixing up functionality that assumes a
191      * uniform execution state like do_interrupt.
192      */
193     if (!kvm_enabled()) {
194         error_setg(errp, "'aarch64' feature cannot be disabled "
195                          "unless KVM is enabled");
196         return;
197     }
198
199     if (value == false) {
200         unset_feature(&cpu->env, ARM_FEATURE_AARCH64);
201     } else {
202         set_feature(&cpu->env, ARM_FEATURE_AARCH64);
203     }
204 }
205
206 static void aarch64_cpu_initfn(Object *obj)
207 {
208     object_property_add_bool(obj, "aarch64", aarch64_cpu_get_aarch64,
209                              aarch64_cpu_set_aarch64, NULL);
210     object_property_set_description(obj, "aarch64",
211                                     "Set on/off to enable/disable aarch64 "
212                                     "execution state ",
213                                     NULL);
214 }
215
216 static void aarch64_cpu_finalizefn(Object *obj)
217 {
218 }
219
220 static void aarch64_cpu_set_pc(CPUState *cs, vaddr value)
221 {
222     ARMCPU *cpu = ARM_CPU(cs);
223     /* It's OK to look at env for the current mode here, because it's
224      * never possible for an AArch64 TB to chain to an AArch32 TB.
225      * (Otherwise we would need to use synchronize_from_tb instead.)
226      */
227     if (is_a64(&cpu->env)) {
228         cpu->env.pc = value;
229     } else {
230         cpu->env.regs[15] = value;
231     }
232 }
233
234 static void aarch64_cpu_class_init(ObjectClass *oc, void *data)
235 {
236     CPUClass *cc = CPU_CLASS(oc);
237
238 #if !defined(CONFIG_USER_ONLY)
239     cc->do_interrupt = aarch64_cpu_do_interrupt;
240 #endif
241     cc->cpu_exec_interrupt = arm_cpu_exec_interrupt;
242     cc->set_pc = aarch64_cpu_set_pc;
243     cc->gdb_read_register = aarch64_cpu_gdb_read_register;
244     cc->gdb_write_register = aarch64_cpu_gdb_write_register;
245     cc->gdb_num_core_regs = 34;
246     cc->gdb_core_xml_file = "aarch64-core.xml";
247 }
248
249 static void aarch64_cpu_register(const ARMCPUInfo *info)
250 {
251     TypeInfo type_info = {
252         .parent = TYPE_AARCH64_CPU,
253         .instance_size = sizeof(ARMCPU),
254         .instance_init = info->initfn,
255         .class_size = sizeof(ARMCPUClass),
256         .class_init = info->class_init,
257     };
258
259     type_info.name = g_strdup_printf("%s-" TYPE_ARM_CPU, info->name);
260     type_register(&type_info);
261     g_free((void *)type_info.name);
262 }
263
264 static const TypeInfo aarch64_cpu_type_info = {
265     .name = TYPE_AARCH64_CPU,
266     .parent = TYPE_ARM_CPU,
267     .instance_size = sizeof(ARMCPU),
268     .instance_init = aarch64_cpu_initfn,
269     .instance_finalize = aarch64_cpu_finalizefn,
270     .abstract = true,
271     .class_size = sizeof(AArch64CPUClass),
272     .class_init = aarch64_cpu_class_init,
273 };
274
275 static void aarch64_cpu_register_types(void)
276 {
277     const ARMCPUInfo *info = aarch64_cpus;
278
279     type_register_static(&aarch64_cpu_type_info);
280
281     while (info->name) {
282         aarch64_cpu_register(info);
283         info++;
284     }
285 }
286
287 type_init(aarch64_cpu_register_types)
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