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1 /*
2  * QEMU ARM CPU
3  *
4  * Copyright (c) 2012 SUSE LINUX Products GmbH
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 #include "hw/qdev-properties.h"
24 #include "qapi/qmp/qerror.h"
25 #if !defined(CONFIG_USER_ONLY)
26 #include "hw/loader.h"
27 #endif
28 #include "hw/arm/arm.h"
29 #include "sysemu/sysemu.h"
30 #include "sysemu/kvm.h"
31
32 static void arm_cpu_set_pc(CPUState *cs, vaddr value)
33 {
34     ARMCPU *cpu = ARM_CPU(cs);
35
36     cpu->env.regs[15] = value;
37 }
38
39 static void cp_reg_reset(gpointer key, gpointer value, gpointer opaque)
40 {
41     /* Reset a single ARMCPRegInfo register */
42     ARMCPRegInfo *ri = value;
43     ARMCPU *cpu = opaque;
44
45     if (ri->type & ARM_CP_SPECIAL) {
46         return;
47     }
48
49     if (ri->resetfn) {
50         ri->resetfn(&cpu->env, ri);
51         return;
52     }
53
54     /* A zero offset is never possible as it would be regs[0]
55      * so we use it to indicate that reset is being handled elsewhere.
56      * This is basically only used for fields in non-core coprocessors
57      * (like the pxa2xx ones).
58      */
59     if (!ri->fieldoffset) {
60         return;
61     }
62
63     if (ri->type & ARM_CP_64BIT) {
64         CPREG_FIELD64(&cpu->env, ri) = ri->resetvalue;
65     } else {
66         CPREG_FIELD32(&cpu->env, ri) = ri->resetvalue;
67     }
68 }
69
70 /* CPUClass::reset() */
71 static void arm_cpu_reset(CPUState *s)
72 {
73     ARMCPU *cpu = ARM_CPU(s);
74     ARMCPUClass *acc = ARM_CPU_GET_CLASS(cpu);
75     CPUARMState *env = &cpu->env;
76
77     acc->parent_reset(s);
78
79     memset(env, 0, offsetof(CPUARMState, breakpoints));
80     g_hash_table_foreach(cpu->cp_regs, cp_reg_reset, cpu);
81     env->vfp.xregs[ARM_VFP_FPSID] = cpu->reset_fpsid;
82     env->vfp.xregs[ARM_VFP_MVFR0] = cpu->mvfr0;
83     env->vfp.xregs[ARM_VFP_MVFR1] = cpu->mvfr1;
84
85     if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
86         env->iwmmxt.cregs[ARM_IWMMXT_wCID] = 0x69051000 | 'Q';
87     }
88
89     if (arm_feature(env, ARM_FEATURE_AARCH64)) {
90         /* 64 bit CPUs always start in 64 bit mode */
91         env->aarch64 = 1;
92 #if defined(CONFIG_USER_ONLY)
93         env->pstate = PSTATE_MODE_EL0t;
94 #else
95         env->pstate = PSTATE_D | PSTATE_A | PSTATE_I | PSTATE_F
96             | PSTATE_MODE_EL1h;
97 #endif
98     }
99
100 #if defined(CONFIG_USER_ONLY)
101     env->uncached_cpsr = ARM_CPU_MODE_USR;
102     /* For user mode we must enable access to coprocessors */
103     env->vfp.xregs[ARM_VFP_FPEXC] = 1 << 30;
104     if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
105         env->cp15.c15_cpar = 3;
106     } else if (arm_feature(env, ARM_FEATURE_XSCALE)) {
107         env->cp15.c15_cpar = 1;
108     }
109 #else
110     /* SVC mode with interrupts disabled.  */
111     env->uncached_cpsr = ARM_CPU_MODE_SVC | CPSR_A | CPSR_F | CPSR_I;
112     /* On ARMv7-M the CPSR_I is the value of the PRIMASK register, and is
113        clear at reset.  Initial SP and PC are loaded from ROM.  */
114     if (IS_M(env)) {
115         uint32_t pc;
116         uint8_t *rom;
117         env->uncached_cpsr &= ~CPSR_I;
118         rom = rom_ptr(0);
119         if (rom) {
120             /* We should really use ldl_phys here, in case the guest
121                modified flash and reset itself.  However images
122                loaded via -kernel have not been copied yet, so load the
123                values directly from there.  */
124             env->regs[13] = ldl_p(rom) & 0xFFFFFFFC;
125             pc = ldl_p(rom + 4);
126             env->thumb = pc & 1;
127             env->regs[15] = pc & ~1;
128         }
129     }
130
131     if (env->cp15.c1_sys & (1 << 13)) {
132             env->regs[15] = 0xFFFF0000;
133     }
134
135     env->vfp.xregs[ARM_VFP_FPEXC] = 0;
136 #endif
137     set_flush_to_zero(1, &env->vfp.standard_fp_status);
138     set_flush_inputs_to_zero(1, &env->vfp.standard_fp_status);
139     set_default_nan_mode(1, &env->vfp.standard_fp_status);
140     set_float_detect_tininess(float_tininess_before_rounding,
141                               &env->vfp.fp_status);
142     set_float_detect_tininess(float_tininess_before_rounding,
143                               &env->vfp.standard_fp_status);
144     tlb_flush(env, 1);
145     /* Reset is a state change for some CPUARMState fields which we
146      * bake assumptions about into translated code, so we need to
147      * tb_flush().
148      */
149     tb_flush(env);
150 }
151
152 #ifndef CONFIG_USER_ONLY
153 static void arm_cpu_set_irq(void *opaque, int irq, int level)
154 {
155     ARMCPU *cpu = opaque;
156     CPUState *cs = CPU(cpu);
157
158     switch (irq) {
159     case ARM_CPU_IRQ:
160         if (level) {
161             cpu_interrupt(cs, CPU_INTERRUPT_HARD);
162         } else {
163             cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
164         }
165         break;
166     case ARM_CPU_FIQ:
167         if (level) {
168             cpu_interrupt(cs, CPU_INTERRUPT_FIQ);
169         } else {
170             cpu_reset_interrupt(cs, CPU_INTERRUPT_FIQ);
171         }
172         break;
173     default:
174         hw_error("arm_cpu_set_irq: Bad interrupt line %d\n", irq);
175     }
176 }
177
178 static void arm_cpu_kvm_set_irq(void *opaque, int irq, int level)
179 {
180 #ifdef CONFIG_KVM
181     ARMCPU *cpu = opaque;
182     CPUState *cs = CPU(cpu);
183     int kvm_irq = KVM_ARM_IRQ_TYPE_CPU << KVM_ARM_IRQ_TYPE_SHIFT;
184
185     switch (irq) {
186     case ARM_CPU_IRQ:
187         kvm_irq |= KVM_ARM_IRQ_CPU_IRQ;
188         break;
189     case ARM_CPU_FIQ:
190         kvm_irq |= KVM_ARM_IRQ_CPU_FIQ;
191         break;
192     default:
193         hw_error("arm_cpu_kvm_set_irq: Bad interrupt line %d\n", irq);
194     }
195     kvm_irq |= cs->cpu_index << KVM_ARM_IRQ_VCPU_SHIFT;
196     kvm_set_irq(kvm_state, kvm_irq, level ? 1 : 0);
197 #endif
198 }
199 #endif
200
201 static inline void set_feature(CPUARMState *env, int feature)
202 {
203     env->features |= 1ULL << feature;
204 }
205
206 static void arm_cpu_initfn(Object *obj)
207 {
208     CPUState *cs = CPU(obj);
209     ARMCPU *cpu = ARM_CPU(obj);
210     static bool inited;
211
212     cs->env_ptr = &cpu->env;
213     cpu_exec_init(&cpu->env);
214     cpu->cp_regs = g_hash_table_new_full(g_int_hash, g_int_equal,
215                                          g_free, g_free);
216
217 #ifndef CONFIG_USER_ONLY
218     /* Our inbound IRQ and FIQ lines */
219     if (kvm_enabled()) {
220         qdev_init_gpio_in(DEVICE(cpu), arm_cpu_kvm_set_irq, 2);
221     } else {
222         qdev_init_gpio_in(DEVICE(cpu), arm_cpu_set_irq, 2);
223     }
224
225     cpu->gt_timer[GTIMER_PHYS] = timer_new(QEMU_CLOCK_VIRTUAL, GTIMER_SCALE,
226                                                 arm_gt_ptimer_cb, cpu);
227     cpu->gt_timer[GTIMER_VIRT] = timer_new(QEMU_CLOCK_VIRTUAL, GTIMER_SCALE,
228                                                 arm_gt_vtimer_cb, cpu);
229     qdev_init_gpio_out(DEVICE(cpu), cpu->gt_timer_outputs,
230                        ARRAY_SIZE(cpu->gt_timer_outputs));
231 #endif
232
233     /* DTB consumers generally don't in fact care what the 'compatible'
234      * string is, so always provide some string and trust that a hypothetical
235      * picky DTB consumer will also provide a helpful error message.
236      */
237     cpu->dtb_compatible = "qemu,unknown";
238     cpu->kvm_target = QEMU_KVM_ARM_TARGET_NONE;
239
240     if (tcg_enabled() && !inited) {
241         inited = true;
242         arm_translate_init();
243     }
244 }
245
246 static Property arm_cpu_reset_cbar_property =
247             DEFINE_PROP_UINT32("reset-cbar", ARMCPU, reset_cbar, 0);
248
249 static Property arm_cpu_reset_hivecs_property =
250             DEFINE_PROP_BOOL("reset-hivecs", ARMCPU, reset_hivecs, false);
251
252 static void arm_cpu_post_init(Object *obj)
253 {
254     ARMCPU *cpu = ARM_CPU(obj);
255
256     if (arm_feature(&cpu->env, ARM_FEATURE_CBAR)) {
257         qdev_property_add_static(DEVICE(obj), &arm_cpu_reset_cbar_property,
258                                  &error_abort);
259     }
260
261     if (!arm_feature(&cpu->env, ARM_FEATURE_M)) {
262         qdev_property_add_static(DEVICE(obj), &arm_cpu_reset_hivecs_property,
263                                  &error_abort);
264     }
265 }
266
267 static void arm_cpu_finalizefn(Object *obj)
268 {
269     ARMCPU *cpu = ARM_CPU(obj);
270     g_hash_table_destroy(cpu->cp_regs);
271 }
272
273 static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
274 {
275     CPUState *cs = CPU(dev);
276     ARMCPU *cpu = ARM_CPU(dev);
277     ARMCPUClass *acc = ARM_CPU_GET_CLASS(dev);
278     CPUARMState *env = &cpu->env;
279
280     /* Some features automatically imply others: */
281     if (arm_feature(env, ARM_FEATURE_V8)) {
282         set_feature(env, ARM_FEATURE_V7);
283         set_feature(env, ARM_FEATURE_ARM_DIV);
284         set_feature(env, ARM_FEATURE_LPAE);
285         set_feature(env, ARM_FEATURE_V8_AES);
286     }
287     if (arm_feature(env, ARM_FEATURE_V7)) {
288         set_feature(env, ARM_FEATURE_VAPA);
289         set_feature(env, ARM_FEATURE_THUMB2);
290         set_feature(env, ARM_FEATURE_MPIDR);
291         if (!arm_feature(env, ARM_FEATURE_M)) {
292             set_feature(env, ARM_FEATURE_V6K);
293         } else {
294             set_feature(env, ARM_FEATURE_V6);
295         }
296     }
297     if (arm_feature(env, ARM_FEATURE_V6K)) {
298         set_feature(env, ARM_FEATURE_V6);
299         set_feature(env, ARM_FEATURE_MVFR);
300     }
301     if (arm_feature(env, ARM_FEATURE_V6)) {
302         set_feature(env, ARM_FEATURE_V5);
303         if (!arm_feature(env, ARM_FEATURE_M)) {
304             set_feature(env, ARM_FEATURE_AUXCR);
305         }
306     }
307     if (arm_feature(env, ARM_FEATURE_V5)) {
308         set_feature(env, ARM_FEATURE_V4T);
309     }
310     if (arm_feature(env, ARM_FEATURE_M)) {
311         set_feature(env, ARM_FEATURE_THUMB_DIV);
312     }
313     if (arm_feature(env, ARM_FEATURE_ARM_DIV)) {
314         set_feature(env, ARM_FEATURE_THUMB_DIV);
315     }
316     if (arm_feature(env, ARM_FEATURE_VFP4)) {
317         set_feature(env, ARM_FEATURE_VFP3);
318     }
319     if (arm_feature(env, ARM_FEATURE_VFP3)) {
320         set_feature(env, ARM_FEATURE_VFP);
321     }
322     if (arm_feature(env, ARM_FEATURE_LPAE)) {
323         set_feature(env, ARM_FEATURE_V7MP);
324         set_feature(env, ARM_FEATURE_PXN);
325     }
326
327     if (cpu->reset_hivecs) {
328             cpu->reset_sctlr |= (1 << 13);
329     }
330
331     register_cp_regs_for_features(cpu);
332     arm_cpu_register_gdb_regs_for_features(cpu);
333
334     init_cpreg_list(cpu);
335
336     cpu_reset(cs);
337     qemu_init_vcpu(cs);
338
339     acc->parent_realize(dev, errp);
340 }
341
342 static ObjectClass *arm_cpu_class_by_name(const char *cpu_model)
343 {
344     ObjectClass *oc;
345     char *typename;
346
347     if (!cpu_model) {
348         return NULL;
349     }
350
351     typename = g_strdup_printf("%s-" TYPE_ARM_CPU, cpu_model);
352     oc = object_class_by_name(typename);
353     g_free(typename);
354     if (!oc || !object_class_dynamic_cast(oc, TYPE_ARM_CPU) ||
355         object_class_is_abstract(oc)) {
356         return NULL;
357     }
358     return oc;
359 }
360
361 /* CPU models. These are not needed for the AArch64 linux-user build. */
362 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
363
364 static void arm926_initfn(Object *obj)
365 {
366     ARMCPU *cpu = ARM_CPU(obj);
367
368     cpu->dtb_compatible = "arm,arm926";
369     set_feature(&cpu->env, ARM_FEATURE_V5);
370     set_feature(&cpu->env, ARM_FEATURE_VFP);
371     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
372     set_feature(&cpu->env, ARM_FEATURE_CACHE_TEST_CLEAN);
373     cpu->midr = 0x41069265;
374     cpu->reset_fpsid = 0x41011090;
375     cpu->ctr = 0x1dd20d2;
376     cpu->reset_sctlr = 0x00090078;
377 }
378
379 static void arm946_initfn(Object *obj)
380 {
381     ARMCPU *cpu = ARM_CPU(obj);
382
383     cpu->dtb_compatible = "arm,arm946";
384     set_feature(&cpu->env, ARM_FEATURE_V5);
385     set_feature(&cpu->env, ARM_FEATURE_MPU);
386     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
387     cpu->midr = 0x41059461;
388     cpu->ctr = 0x0f004006;
389     cpu->reset_sctlr = 0x00000078;
390 }
391
392 static void arm1026_initfn(Object *obj)
393 {
394     ARMCPU *cpu = ARM_CPU(obj);
395
396     cpu->dtb_compatible = "arm,arm1026";
397     set_feature(&cpu->env, ARM_FEATURE_V5);
398     set_feature(&cpu->env, ARM_FEATURE_VFP);
399     set_feature(&cpu->env, ARM_FEATURE_AUXCR);
400     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
401     set_feature(&cpu->env, ARM_FEATURE_CACHE_TEST_CLEAN);
402     cpu->midr = 0x4106a262;
403     cpu->reset_fpsid = 0x410110a0;
404     cpu->ctr = 0x1dd20d2;
405     cpu->reset_sctlr = 0x00090078;
406     cpu->reset_auxcr = 1;
407     {
408         /* The 1026 had an IFAR at c6,c0,0,1 rather than the ARMv6 c6,c0,0,2 */
409         ARMCPRegInfo ifar = {
410             .name = "IFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 1,
411             .access = PL1_RW,
412             .fieldoffset = offsetof(CPUARMState, cp15.c6_insn),
413             .resetvalue = 0
414         };
415         define_one_arm_cp_reg(cpu, &ifar);
416     }
417 }
418
419 static void arm1136_r2_initfn(Object *obj)
420 {
421     ARMCPU *cpu = ARM_CPU(obj);
422     /* What qemu calls "arm1136_r2" is actually the 1136 r0p2, ie an
423      * older core than plain "arm1136". In particular this does not
424      * have the v6K features.
425      * These ID register values are correct for 1136 but may be wrong
426      * for 1136_r2 (in particular r0p2 does not actually implement most
427      * of the ID registers).
428      */
429
430     cpu->dtb_compatible = "arm,arm1136";
431     set_feature(&cpu->env, ARM_FEATURE_V6);
432     set_feature(&cpu->env, ARM_FEATURE_VFP);
433     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
434     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
435     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
436     cpu->midr = 0x4107b362;
437     cpu->reset_fpsid = 0x410120b4;
438     cpu->mvfr0 = 0x11111111;
439     cpu->mvfr1 = 0x00000000;
440     cpu->ctr = 0x1dd20d2;
441     cpu->reset_sctlr = 0x00050078;
442     cpu->id_pfr0 = 0x111;
443     cpu->id_pfr1 = 0x1;
444     cpu->id_dfr0 = 0x2;
445     cpu->id_afr0 = 0x3;
446     cpu->id_mmfr0 = 0x01130003;
447     cpu->id_mmfr1 = 0x10030302;
448     cpu->id_mmfr2 = 0x01222110;
449     cpu->id_isar0 = 0x00140011;
450     cpu->id_isar1 = 0x12002111;
451     cpu->id_isar2 = 0x11231111;
452     cpu->id_isar3 = 0x01102131;
453     cpu->id_isar4 = 0x141;
454     cpu->reset_auxcr = 7;
455 }
456
457 static void arm1136_initfn(Object *obj)
458 {
459     ARMCPU *cpu = ARM_CPU(obj);
460
461     cpu->dtb_compatible = "arm,arm1136";
462     set_feature(&cpu->env, ARM_FEATURE_V6K);
463     set_feature(&cpu->env, ARM_FEATURE_V6);
464     set_feature(&cpu->env, ARM_FEATURE_VFP);
465     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
466     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
467     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
468     cpu->midr = 0x4117b363;
469     cpu->reset_fpsid = 0x410120b4;
470     cpu->mvfr0 = 0x11111111;
471     cpu->mvfr1 = 0x00000000;
472     cpu->ctr = 0x1dd20d2;
473     cpu->reset_sctlr = 0x00050078;
474     cpu->id_pfr0 = 0x111;
475     cpu->id_pfr1 = 0x1;
476     cpu->id_dfr0 = 0x2;
477     cpu->id_afr0 = 0x3;
478     cpu->id_mmfr0 = 0x01130003;
479     cpu->id_mmfr1 = 0x10030302;
480     cpu->id_mmfr2 = 0x01222110;
481     cpu->id_isar0 = 0x00140011;
482     cpu->id_isar1 = 0x12002111;
483     cpu->id_isar2 = 0x11231111;
484     cpu->id_isar3 = 0x01102131;
485     cpu->id_isar4 = 0x141;
486     cpu->reset_auxcr = 7;
487 }
488
489 static void arm1176_initfn(Object *obj)
490 {
491     ARMCPU *cpu = ARM_CPU(obj);
492
493     cpu->dtb_compatible = "arm,arm1176";
494     set_feature(&cpu->env, ARM_FEATURE_V6K);
495     set_feature(&cpu->env, ARM_FEATURE_VFP);
496     set_feature(&cpu->env, ARM_FEATURE_VAPA);
497     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
498     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
499     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
500     cpu->midr = 0x410fb767;
501     cpu->reset_fpsid = 0x410120b5;
502     cpu->mvfr0 = 0x11111111;
503     cpu->mvfr1 = 0x00000000;
504     cpu->ctr = 0x1dd20d2;
505     cpu->reset_sctlr = 0x00050078;
506     cpu->id_pfr0 = 0x111;
507     cpu->id_pfr1 = 0x11;
508     cpu->id_dfr0 = 0x33;
509     cpu->id_afr0 = 0;
510     cpu->id_mmfr0 = 0x01130003;
511     cpu->id_mmfr1 = 0x10030302;
512     cpu->id_mmfr2 = 0x01222100;
513     cpu->id_isar0 = 0x0140011;
514     cpu->id_isar1 = 0x12002111;
515     cpu->id_isar2 = 0x11231121;
516     cpu->id_isar3 = 0x01102131;
517     cpu->id_isar4 = 0x01141;
518     cpu->reset_auxcr = 7;
519 }
520
521 static void arm11mpcore_initfn(Object *obj)
522 {
523     ARMCPU *cpu = ARM_CPU(obj);
524
525     cpu->dtb_compatible = "arm,arm11mpcore";
526     set_feature(&cpu->env, ARM_FEATURE_V6K);
527     set_feature(&cpu->env, ARM_FEATURE_VFP);
528     set_feature(&cpu->env, ARM_FEATURE_VAPA);
529     set_feature(&cpu->env, ARM_FEATURE_MPIDR);
530     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
531     cpu->midr = 0x410fb022;
532     cpu->reset_fpsid = 0x410120b4;
533     cpu->mvfr0 = 0x11111111;
534     cpu->mvfr1 = 0x00000000;
535     cpu->ctr = 0x1d192992; /* 32K icache 32K dcache */
536     cpu->id_pfr0 = 0x111;
537     cpu->id_pfr1 = 0x1;
538     cpu->id_dfr0 = 0;
539     cpu->id_afr0 = 0x2;
540     cpu->id_mmfr0 = 0x01100103;
541     cpu->id_mmfr1 = 0x10020302;
542     cpu->id_mmfr2 = 0x01222000;
543     cpu->id_isar0 = 0x00100011;
544     cpu->id_isar1 = 0x12002111;
545     cpu->id_isar2 = 0x11221011;
546     cpu->id_isar3 = 0x01102131;
547     cpu->id_isar4 = 0x141;
548     cpu->reset_auxcr = 1;
549 }
550
551 static void cortex_m3_initfn(Object *obj)
552 {
553     ARMCPU *cpu = ARM_CPU(obj);
554     set_feature(&cpu->env, ARM_FEATURE_V7);
555     set_feature(&cpu->env, ARM_FEATURE_M);
556     cpu->midr = 0x410fc231;
557 }
558
559 static void arm_v7m_class_init(ObjectClass *oc, void *data)
560 {
561 #ifndef CONFIG_USER_ONLY
562     CPUClass *cc = CPU_CLASS(oc);
563
564     cc->do_interrupt = arm_v7m_cpu_do_interrupt;
565 #endif
566 }
567
568 static const ARMCPRegInfo cortexa8_cp_reginfo[] = {
569     { .name = "L2LOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 0,
570       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
571     { .name = "L2AUXCR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2,
572       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
573     REGINFO_SENTINEL
574 };
575
576 static void cortex_a8_initfn(Object *obj)
577 {
578     ARMCPU *cpu = ARM_CPU(obj);
579
580     cpu->dtb_compatible = "arm,cortex-a8";
581     set_feature(&cpu->env, ARM_FEATURE_V7);
582     set_feature(&cpu->env, ARM_FEATURE_VFP3);
583     set_feature(&cpu->env, ARM_FEATURE_NEON);
584     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
585     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
586     cpu->midr = 0x410fc080;
587     cpu->reset_fpsid = 0x410330c0;
588     cpu->mvfr0 = 0x11110222;
589     cpu->mvfr1 = 0x00011100;
590     cpu->ctr = 0x82048004;
591     cpu->reset_sctlr = 0x00c50078;
592     cpu->id_pfr0 = 0x1031;
593     cpu->id_pfr1 = 0x11;
594     cpu->id_dfr0 = 0x400;
595     cpu->id_afr0 = 0;
596     cpu->id_mmfr0 = 0x31100003;
597     cpu->id_mmfr1 = 0x20000000;
598     cpu->id_mmfr2 = 0x01202000;
599     cpu->id_mmfr3 = 0x11;
600     cpu->id_isar0 = 0x00101111;
601     cpu->id_isar1 = 0x12112111;
602     cpu->id_isar2 = 0x21232031;
603     cpu->id_isar3 = 0x11112131;
604     cpu->id_isar4 = 0x00111142;
605     cpu->clidr = (1 << 27) | (2 << 24) | 3;
606     cpu->ccsidr[0] = 0xe007e01a; /* 16k L1 dcache. */
607     cpu->ccsidr[1] = 0x2007e01a; /* 16k L1 icache. */
608     cpu->ccsidr[2] = 0xf0000000; /* No L2 icache. */
609     cpu->reset_auxcr = 2;
610     define_arm_cp_regs(cpu, cortexa8_cp_reginfo);
611 }
612
613 static const ARMCPRegInfo cortexa9_cp_reginfo[] = {
614     /* power_control should be set to maximum latency. Again,
615      * default to 0 and set by private hook
616      */
617     { .name = "A9_PWRCTL", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 0,
618       .access = PL1_RW, .resetvalue = 0,
619       .fieldoffset = offsetof(CPUARMState, cp15.c15_power_control) },
620     { .name = "A9_DIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 1,
621       .access = PL1_RW, .resetvalue = 0,
622       .fieldoffset = offsetof(CPUARMState, cp15.c15_diagnostic) },
623     { .name = "A9_PWRDIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 2,
624       .access = PL1_RW, .resetvalue = 0,
625       .fieldoffset = offsetof(CPUARMState, cp15.c15_power_diagnostic) },
626     { .name = "NEONBUSY", .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0,
627       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
628     /* TLB lockdown control */
629     { .name = "TLB_LOCKR", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 2,
630       .access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
631     { .name = "TLB_LOCKW", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 4,
632       .access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
633     { .name = "TLB_VA", .cp = 15, .crn = 15, .crm = 5, .opc1 = 5, .opc2 = 2,
634       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
635     { .name = "TLB_PA", .cp = 15, .crn = 15, .crm = 6, .opc1 = 5, .opc2 = 2,
636       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
637     { .name = "TLB_ATTR", .cp = 15, .crn = 15, .crm = 7, .opc1 = 5, .opc2 = 2,
638       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
639     REGINFO_SENTINEL
640 };
641
642 static void cortex_a9_initfn(Object *obj)
643 {
644     ARMCPU *cpu = ARM_CPU(obj);
645
646     cpu->dtb_compatible = "arm,cortex-a9";
647     set_feature(&cpu->env, ARM_FEATURE_V7);
648     set_feature(&cpu->env, ARM_FEATURE_VFP3);
649     set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
650     set_feature(&cpu->env, ARM_FEATURE_NEON);
651     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
652     /* Note that A9 supports the MP extensions even for
653      * A9UP and single-core A9MP (which are both different
654      * and valid configurations; we don't model A9UP).
655      */
656     set_feature(&cpu->env, ARM_FEATURE_V7MP);
657     set_feature(&cpu->env, ARM_FEATURE_CBAR);
658     cpu->midr = 0x410fc090;
659     cpu->reset_fpsid = 0x41033090;
660     cpu->mvfr0 = 0x11110222;
661     cpu->mvfr1 = 0x01111111;
662     cpu->ctr = 0x80038003;
663     cpu->reset_sctlr = 0x00c50078;
664     cpu->id_pfr0 = 0x1031;
665     cpu->id_pfr1 = 0x11;
666     cpu->id_dfr0 = 0x000;
667     cpu->id_afr0 = 0;
668     cpu->id_mmfr0 = 0x00100103;
669     cpu->id_mmfr1 = 0x20000000;
670     cpu->id_mmfr2 = 0x01230000;
671     cpu->id_mmfr3 = 0x00002111;
672     cpu->id_isar0 = 0x00101111;
673     cpu->id_isar1 = 0x13112111;
674     cpu->id_isar2 = 0x21232041;
675     cpu->id_isar3 = 0x11112131;
676     cpu->id_isar4 = 0x00111142;
677     cpu->clidr = (1 << 27) | (1 << 24) | 3;
678     cpu->ccsidr[0] = 0xe00fe015; /* 16k L1 dcache. */
679     cpu->ccsidr[1] = 0x200fe015; /* 16k L1 icache. */
680     define_arm_cp_regs(cpu, cortexa9_cp_reginfo);
681 }
682
683 #ifndef CONFIG_USER_ONLY
684 static int a15_l2ctlr_read(CPUARMState *env, const ARMCPRegInfo *ri,
685                            uint64_t *value)
686 {
687     /* Linux wants the number of processors from here.
688      * Might as well set the interrupt-controller bit too.
689      */
690     *value = ((smp_cpus - 1) << 24) | (1 << 23);
691     return 0;
692 }
693 #endif
694
695 static const ARMCPRegInfo cortexa15_cp_reginfo[] = {
696 #ifndef CONFIG_USER_ONLY
697     { .name = "L2CTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2,
698       .access = PL1_RW, .resetvalue = 0, .readfn = a15_l2ctlr_read,
699       .writefn = arm_cp_write_ignore, },
700 #endif
701     { .name = "L2ECTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 3,
702       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
703     REGINFO_SENTINEL
704 };
705
706 static void cortex_a15_initfn(Object *obj)
707 {
708     ARMCPU *cpu = ARM_CPU(obj);
709
710     cpu->dtb_compatible = "arm,cortex-a15";
711     set_feature(&cpu->env, ARM_FEATURE_V7);
712     set_feature(&cpu->env, ARM_FEATURE_VFP4);
713     set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
714     set_feature(&cpu->env, ARM_FEATURE_NEON);
715     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
716     set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
717     set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
718     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
719     set_feature(&cpu->env, ARM_FEATURE_CBAR);
720     set_feature(&cpu->env, ARM_FEATURE_LPAE);
721     cpu->kvm_target = QEMU_KVM_ARM_TARGET_CORTEX_A15;
722     cpu->midr = 0x412fc0f1;
723     cpu->reset_fpsid = 0x410430f0;
724     cpu->mvfr0 = 0x10110222;
725     cpu->mvfr1 = 0x11111111;
726     cpu->ctr = 0x8444c004;
727     cpu->reset_sctlr = 0x00c50078;
728     cpu->id_pfr0 = 0x00001131;
729     cpu->id_pfr1 = 0x00011011;
730     cpu->id_dfr0 = 0x02010555;
731     cpu->id_afr0 = 0x00000000;
732     cpu->id_mmfr0 = 0x10201105;
733     cpu->id_mmfr1 = 0x20000000;
734     cpu->id_mmfr2 = 0x01240000;
735     cpu->id_mmfr3 = 0x02102211;
736     cpu->id_isar0 = 0x02101110;
737     cpu->id_isar1 = 0x13112111;
738     cpu->id_isar2 = 0x21232041;
739     cpu->id_isar3 = 0x11112131;
740     cpu->id_isar4 = 0x10011142;
741     cpu->clidr = 0x0a200023;
742     cpu->ccsidr[0] = 0x701fe00a; /* 32K L1 dcache */
743     cpu->ccsidr[1] = 0x201fe00a; /* 32K L1 icache */
744     cpu->ccsidr[2] = 0x711fe07a; /* 4096K L2 unified cache */
745     define_arm_cp_regs(cpu, cortexa15_cp_reginfo);
746 }
747
748 static void ti925t_initfn(Object *obj)
749 {
750     ARMCPU *cpu = ARM_CPU(obj);
751     set_feature(&cpu->env, ARM_FEATURE_V4T);
752     set_feature(&cpu->env, ARM_FEATURE_OMAPCP);
753     cpu->midr = ARM_CPUID_TI925T;
754     cpu->ctr = 0x5109149;
755     cpu->reset_sctlr = 0x00000070;
756 }
757
758 static void sa1100_initfn(Object *obj)
759 {
760     ARMCPU *cpu = ARM_CPU(obj);
761
762     cpu->dtb_compatible = "intel,sa1100";
763     set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
764     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
765     cpu->midr = 0x4401A11B;
766     cpu->reset_sctlr = 0x00000070;
767 }
768
769 static void sa1110_initfn(Object *obj)
770 {
771     ARMCPU *cpu = ARM_CPU(obj);
772     set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
773     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
774     cpu->midr = 0x6901B119;
775     cpu->reset_sctlr = 0x00000070;
776 }
777
778 static void pxa250_initfn(Object *obj)
779 {
780     ARMCPU *cpu = ARM_CPU(obj);
781
782     cpu->dtb_compatible = "marvell,xscale";
783     set_feature(&cpu->env, ARM_FEATURE_V5);
784     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
785     cpu->midr = 0x69052100;
786     cpu->ctr = 0xd172172;
787     cpu->reset_sctlr = 0x00000078;
788 }
789
790 static void pxa255_initfn(Object *obj)
791 {
792     ARMCPU *cpu = ARM_CPU(obj);
793
794     cpu->dtb_compatible = "marvell,xscale";
795     set_feature(&cpu->env, ARM_FEATURE_V5);
796     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
797     cpu->midr = 0x69052d00;
798     cpu->ctr = 0xd172172;
799     cpu->reset_sctlr = 0x00000078;
800 }
801
802 static void pxa260_initfn(Object *obj)
803 {
804     ARMCPU *cpu = ARM_CPU(obj);
805
806     cpu->dtb_compatible = "marvell,xscale";
807     set_feature(&cpu->env, ARM_FEATURE_V5);
808     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
809     cpu->midr = 0x69052903;
810     cpu->ctr = 0xd172172;
811     cpu->reset_sctlr = 0x00000078;
812 }
813
814 static void pxa261_initfn(Object *obj)
815 {
816     ARMCPU *cpu = ARM_CPU(obj);
817
818     cpu->dtb_compatible = "marvell,xscale";
819     set_feature(&cpu->env, ARM_FEATURE_V5);
820     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
821     cpu->midr = 0x69052d05;
822     cpu->ctr = 0xd172172;
823     cpu->reset_sctlr = 0x00000078;
824 }
825
826 static void pxa262_initfn(Object *obj)
827 {
828     ARMCPU *cpu = ARM_CPU(obj);
829
830     cpu->dtb_compatible = "marvell,xscale";
831     set_feature(&cpu->env, ARM_FEATURE_V5);
832     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
833     cpu->midr = 0x69052d06;
834     cpu->ctr = 0xd172172;
835     cpu->reset_sctlr = 0x00000078;
836 }
837
838 static void pxa270a0_initfn(Object *obj)
839 {
840     ARMCPU *cpu = ARM_CPU(obj);
841
842     cpu->dtb_compatible = "marvell,xscale";
843     set_feature(&cpu->env, ARM_FEATURE_V5);
844     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
845     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
846     cpu->midr = 0x69054110;
847     cpu->ctr = 0xd172172;
848     cpu->reset_sctlr = 0x00000078;
849 }
850
851 static void pxa270a1_initfn(Object *obj)
852 {
853     ARMCPU *cpu = ARM_CPU(obj);
854
855     cpu->dtb_compatible = "marvell,xscale";
856     set_feature(&cpu->env, ARM_FEATURE_V5);
857     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
858     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
859     cpu->midr = 0x69054111;
860     cpu->ctr = 0xd172172;
861     cpu->reset_sctlr = 0x00000078;
862 }
863
864 static void pxa270b0_initfn(Object *obj)
865 {
866     ARMCPU *cpu = ARM_CPU(obj);
867
868     cpu->dtb_compatible = "marvell,xscale";
869     set_feature(&cpu->env, ARM_FEATURE_V5);
870     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
871     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
872     cpu->midr = 0x69054112;
873     cpu->ctr = 0xd172172;
874     cpu->reset_sctlr = 0x00000078;
875 }
876
877 static void pxa270b1_initfn(Object *obj)
878 {
879     ARMCPU *cpu = ARM_CPU(obj);
880
881     cpu->dtb_compatible = "marvell,xscale";
882     set_feature(&cpu->env, ARM_FEATURE_V5);
883     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
884     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
885     cpu->midr = 0x69054113;
886     cpu->ctr = 0xd172172;
887     cpu->reset_sctlr = 0x00000078;
888 }
889
890 static void pxa270c0_initfn(Object *obj)
891 {
892     ARMCPU *cpu = ARM_CPU(obj);
893
894     cpu->dtb_compatible = "marvell,xscale";
895     set_feature(&cpu->env, ARM_FEATURE_V5);
896     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
897     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
898     cpu->midr = 0x69054114;
899     cpu->ctr = 0xd172172;
900     cpu->reset_sctlr = 0x00000078;
901 }
902
903 static void pxa270c5_initfn(Object *obj)
904 {
905     ARMCPU *cpu = ARM_CPU(obj);
906
907     cpu->dtb_compatible = "marvell,xscale";
908     set_feature(&cpu->env, ARM_FEATURE_V5);
909     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
910     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
911     cpu->midr = 0x69054117;
912     cpu->ctr = 0xd172172;
913     cpu->reset_sctlr = 0x00000078;
914 }
915
916 #ifdef CONFIG_USER_ONLY
917 static void arm_any_initfn(Object *obj)
918 {
919     ARMCPU *cpu = ARM_CPU(obj);
920     set_feature(&cpu->env, ARM_FEATURE_V8);
921     set_feature(&cpu->env, ARM_FEATURE_VFP4);
922     set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
923     set_feature(&cpu->env, ARM_FEATURE_NEON);
924     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
925     set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
926     set_feature(&cpu->env, ARM_FEATURE_V7MP);
927 #ifdef TARGET_AARCH64
928     set_feature(&cpu->env, ARM_FEATURE_AARCH64);
929 #endif
930     cpu->midr = 0xffffffff;
931 }
932 #endif
933
934 #endif /* !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64) */
935
936 typedef struct ARMCPUInfo {
937     const char *name;
938     void (*initfn)(Object *obj);
939     void (*class_init)(ObjectClass *oc, void *data);
940 } ARMCPUInfo;
941
942 static const ARMCPUInfo arm_cpus[] = {
943 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
944     { .name = "arm926",      .initfn = arm926_initfn },
945     { .name = "arm946",      .initfn = arm946_initfn },
946     { .name = "arm1026",     .initfn = arm1026_initfn },
947     /* What QEMU calls "arm1136-r2" is actually the 1136 r0p2, i.e. an
948      * older core than plain "arm1136". In particular this does not
949      * have the v6K features.
950      */
951     { .name = "arm1136-r2",  .initfn = arm1136_r2_initfn },
952     { .name = "arm1136",     .initfn = arm1136_initfn },
953     { .name = "arm1176",     .initfn = arm1176_initfn },
954     { .name = "arm11mpcore", .initfn = arm11mpcore_initfn },
955     { .name = "cortex-m3",   .initfn = cortex_m3_initfn,
956                              .class_init = arm_v7m_class_init },
957     { .name = "cortex-a8",   .initfn = cortex_a8_initfn },
958     { .name = "cortex-a9",   .initfn = cortex_a9_initfn },
959     { .name = "cortex-a15",  .initfn = cortex_a15_initfn },
960     { .name = "ti925t",      .initfn = ti925t_initfn },
961     { .name = "sa1100",      .initfn = sa1100_initfn },
962     { .name = "sa1110",      .initfn = sa1110_initfn },
963     { .name = "pxa250",      .initfn = pxa250_initfn },
964     { .name = "pxa255",      .initfn = pxa255_initfn },
965     { .name = "pxa260",      .initfn = pxa260_initfn },
966     { .name = "pxa261",      .initfn = pxa261_initfn },
967     { .name = "pxa262",      .initfn = pxa262_initfn },
968     /* "pxa270" is an alias for "pxa270-a0" */
969     { .name = "pxa270",      .initfn = pxa270a0_initfn },
970     { .name = "pxa270-a0",   .initfn = pxa270a0_initfn },
971     { .name = "pxa270-a1",   .initfn = pxa270a1_initfn },
972     { .name = "pxa270-b0",   .initfn = pxa270b0_initfn },
973     { .name = "pxa270-b1",   .initfn = pxa270b1_initfn },
974     { .name = "pxa270-c0",   .initfn = pxa270c0_initfn },
975     { .name = "pxa270-c5",   .initfn = pxa270c5_initfn },
976 #ifdef CONFIG_USER_ONLY
977     { .name = "any",         .initfn = arm_any_initfn },
978 #endif
979 #endif
980     { .name = NULL }
981 };
982
983 static Property arm_cpu_properties[] = {
984     DEFINE_PROP_BOOL("start-powered-off", ARMCPU, start_powered_off, false),
985     DEFINE_PROP_UINT32("midr", ARMCPU, midr, 0),
986     DEFINE_PROP_END_OF_LIST()
987 };
988
989 static void arm_cpu_class_init(ObjectClass *oc, void *data)
990 {
991     ARMCPUClass *acc = ARM_CPU_CLASS(oc);
992     CPUClass *cc = CPU_CLASS(acc);
993     DeviceClass *dc = DEVICE_CLASS(oc);
994
995     acc->parent_realize = dc->realize;
996     dc->realize = arm_cpu_realizefn;
997     dc->props = arm_cpu_properties;
998
999     acc->parent_reset = cc->reset;
1000     cc->reset = arm_cpu_reset;
1001
1002     cc->class_by_name = arm_cpu_class_by_name;
1003     cc->do_interrupt = arm_cpu_do_interrupt;
1004     cc->dump_state = arm_cpu_dump_state;
1005     cc->set_pc = arm_cpu_set_pc;
1006     cc->gdb_read_register = arm_cpu_gdb_read_register;
1007     cc->gdb_write_register = arm_cpu_gdb_write_register;
1008 #ifndef CONFIG_USER_ONLY
1009     cc->get_phys_page_debug = arm_cpu_get_phys_page_debug;
1010     cc->vmsd = &vmstate_arm_cpu;
1011 #endif
1012     cc->gdb_num_core_regs = 26;
1013     cc->gdb_core_xml_file = "arm-core.xml";
1014 }
1015
1016 static void cpu_register(const ARMCPUInfo *info)
1017 {
1018     TypeInfo type_info = {
1019         .parent = TYPE_ARM_CPU,
1020         .instance_size = sizeof(ARMCPU),
1021         .instance_init = info->initfn,
1022         .class_size = sizeof(ARMCPUClass),
1023         .class_init = info->class_init,
1024     };
1025
1026     type_info.name = g_strdup_printf("%s-" TYPE_ARM_CPU, info->name);
1027     type_register(&type_info);
1028     g_free((void *)type_info.name);
1029 }
1030
1031 static const TypeInfo arm_cpu_type_info = {
1032     .name = TYPE_ARM_CPU,
1033     .parent = TYPE_CPU,
1034     .instance_size = sizeof(ARMCPU),
1035     .instance_init = arm_cpu_initfn,
1036     .instance_post_init = arm_cpu_post_init,
1037     .instance_finalize = arm_cpu_finalizefn,
1038     .abstract = true,
1039     .class_size = sizeof(ARMCPUClass),
1040     .class_init = arm_cpu_class_init,
1041 };
1042
1043 static void arm_cpu_register_types(void)
1044 {
1045     const ARMCPUInfo *info = arm_cpus;
1046
1047     type_register_static(&arm_cpu_type_info);
1048
1049     while (info->name) {
1050         cpu_register(info);
1051         info++;
1052     }
1053 }
1054
1055 type_init(arm_cpu_register_types)
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