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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 #if !defined(CONFIG_USER_ONLY)
25 #include "hw/loader.h"
26 #endif
27 #include "hw/arm/arm.h"
28 #include "sysemu/sysemu.h"
29 #include "sysemu/kvm.h"
30
31 static void arm_cpu_set_pc(CPUState *cs, vaddr value)
32 {
33     ARMCPU *cpu = ARM_CPU(cs);
34
35     cpu->env.regs[15] = value;
36 }
37
38 static void cp_reg_reset(gpointer key, gpointer value, gpointer opaque)
39 {
40     /* Reset a single ARMCPRegInfo register */
41     ARMCPRegInfo *ri = value;
42     ARMCPU *cpu = opaque;
43
44     if (ri->type & ARM_CP_SPECIAL) {
45         return;
46     }
47
48     if (ri->resetfn) {
49         ri->resetfn(&cpu->env, ri);
50         return;
51     }
52
53     /* A zero offset is never possible as it would be regs[0]
54      * so we use it to indicate that reset is being handled elsewhere.
55      * This is basically only used for fields in non-core coprocessors
56      * (like the pxa2xx ones).
57      */
58     if (!ri->fieldoffset) {
59         return;
60     }
61
62     if (ri->type & ARM_CP_64BIT) {
63         CPREG_FIELD64(&cpu->env, ri) = ri->resetvalue;
64     } else {
65         CPREG_FIELD32(&cpu->env, ri) = ri->resetvalue;
66     }
67 }
68
69 /* CPUClass::reset() */
70 static void arm_cpu_reset(CPUState *s)
71 {
72     ARMCPU *cpu = ARM_CPU(s);
73     ARMCPUClass *acc = ARM_CPU_GET_CLASS(cpu);
74     CPUARMState *env = &cpu->env;
75
76     acc->parent_reset(s);
77
78     memset(env, 0, offsetof(CPUARMState, breakpoints));
79     g_hash_table_foreach(cpu->cp_regs, cp_reg_reset, cpu);
80     env->vfp.xregs[ARM_VFP_FPSID] = cpu->reset_fpsid;
81     env->vfp.xregs[ARM_VFP_MVFR0] = cpu->mvfr0;
82     env->vfp.xregs[ARM_VFP_MVFR1] = cpu->mvfr1;
83
84     if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
85         env->iwmmxt.cregs[ARM_IWMMXT_wCID] = 0x69051000 | 'Q';
86     }
87
88     if (arm_feature(env, ARM_FEATURE_AARCH64)) {
89         /* 64 bit CPUs always start in 64 bit mode */
90         env->aarch64 = 1;
91     }
92
93 #if defined(CONFIG_USER_ONLY)
94     env->uncached_cpsr = ARM_CPU_MODE_USR;
95     /* For user mode we must enable access to coprocessors */
96     env->vfp.xregs[ARM_VFP_FPEXC] = 1 << 30;
97     if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
98         env->cp15.c15_cpar = 3;
99     } else if (arm_feature(env, ARM_FEATURE_XSCALE)) {
100         env->cp15.c15_cpar = 1;
101     }
102 #else
103     /* SVC mode with interrupts disabled.  */
104     env->uncached_cpsr = ARM_CPU_MODE_SVC | CPSR_A | CPSR_F | CPSR_I;
105     /* On ARMv7-M the CPSR_I is the value of the PRIMASK register, and is
106        clear at reset.  Initial SP and PC are loaded from ROM.  */
107     if (IS_M(env)) {
108         uint32_t pc;
109         uint8_t *rom;
110         env->uncached_cpsr &= ~CPSR_I;
111         rom = rom_ptr(0);
112         if (rom) {
113             /* We should really use ldl_phys here, in case the guest
114                modified flash and reset itself.  However images
115                loaded via -kernel have not been copied yet, so load the
116                values directly from there.  */
117             env->regs[13] = ldl_p(rom) & 0xFFFFFFFC;
118             pc = ldl_p(rom + 4);
119             env->thumb = pc & 1;
120             env->regs[15] = pc & ~1;
121         }
122     }
123     env->vfp.xregs[ARM_VFP_FPEXC] = 0;
124 #endif
125     set_flush_to_zero(1, &env->vfp.standard_fp_status);
126     set_flush_inputs_to_zero(1, &env->vfp.standard_fp_status);
127     set_default_nan_mode(1, &env->vfp.standard_fp_status);
128     set_float_detect_tininess(float_tininess_before_rounding,
129                               &env->vfp.fp_status);
130     set_float_detect_tininess(float_tininess_before_rounding,
131                               &env->vfp.standard_fp_status);
132     tlb_flush(env, 1);
133     /* Reset is a state change for some CPUARMState fields which we
134      * bake assumptions about into translated code, so we need to
135      * tb_flush().
136      */
137     tb_flush(env);
138 }
139
140 #ifndef CONFIG_USER_ONLY
141 static void arm_cpu_set_irq(void *opaque, int irq, int level)
142 {
143     ARMCPU *cpu = opaque;
144     CPUState *cs = CPU(cpu);
145
146     switch (irq) {
147     case ARM_CPU_IRQ:
148         if (level) {
149             cpu_interrupt(cs, CPU_INTERRUPT_HARD);
150         } else {
151             cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
152         }
153         break;
154     case ARM_CPU_FIQ:
155         if (level) {
156             cpu_interrupt(cs, CPU_INTERRUPT_FIQ);
157         } else {
158             cpu_reset_interrupt(cs, CPU_INTERRUPT_FIQ);
159         }
160         break;
161     default:
162         hw_error("arm_cpu_set_irq: Bad interrupt line %d\n", irq);
163     }
164 }
165
166 static void arm_cpu_kvm_set_irq(void *opaque, int irq, int level)
167 {
168 #ifdef CONFIG_KVM
169     ARMCPU *cpu = opaque;
170     CPUState *cs = CPU(cpu);
171     int kvm_irq = KVM_ARM_IRQ_TYPE_CPU << KVM_ARM_IRQ_TYPE_SHIFT;
172
173     switch (irq) {
174     case ARM_CPU_IRQ:
175         kvm_irq |= KVM_ARM_IRQ_CPU_IRQ;
176         break;
177     case ARM_CPU_FIQ:
178         kvm_irq |= KVM_ARM_IRQ_CPU_FIQ;
179         break;
180     default:
181         hw_error("arm_cpu_kvm_set_irq: Bad interrupt line %d\n", irq);
182     }
183     kvm_irq |= cs->cpu_index << KVM_ARM_IRQ_VCPU_SHIFT;
184     kvm_set_irq(kvm_state, kvm_irq, level ? 1 : 0);
185 #endif
186 }
187 #endif
188
189 static inline void set_feature(CPUARMState *env, int feature)
190 {
191     env->features |= 1ULL << feature;
192 }
193
194 static void arm_cpu_initfn(Object *obj)
195 {
196     CPUState *cs = CPU(obj);
197     ARMCPU *cpu = ARM_CPU(obj);
198     static bool inited;
199
200     cs->env_ptr = &cpu->env;
201     cpu_exec_init(&cpu->env);
202     cpu->cp_regs = g_hash_table_new_full(g_int_hash, g_int_equal,
203                                          g_free, g_free);
204
205 #ifndef CONFIG_USER_ONLY
206     /* Our inbound IRQ and FIQ lines */
207     if (kvm_enabled()) {
208         qdev_init_gpio_in(DEVICE(cpu), arm_cpu_kvm_set_irq, 2);
209     } else {
210         qdev_init_gpio_in(DEVICE(cpu), arm_cpu_set_irq, 2);
211     }
212
213     cpu->gt_timer[GTIMER_PHYS] = timer_new(QEMU_CLOCK_VIRTUAL, GTIMER_SCALE,
214                                                 arm_gt_ptimer_cb, cpu);
215     cpu->gt_timer[GTIMER_VIRT] = timer_new(QEMU_CLOCK_VIRTUAL, GTIMER_SCALE,
216                                                 arm_gt_vtimer_cb, cpu);
217     qdev_init_gpio_out(DEVICE(cpu), cpu->gt_timer_outputs,
218                        ARRAY_SIZE(cpu->gt_timer_outputs));
219 #endif
220
221     /* DTB consumers generally don't in fact care what the 'compatible'
222      * string is, so always provide some string and trust that a hypothetical
223      * picky DTB consumer will also provide a helpful error message.
224      */
225     cpu->dtb_compatible = "qemu,unknown";
226     cpu->kvm_target = QEMU_KVM_ARM_TARGET_NONE;
227
228     if (tcg_enabled() && !inited) {
229         inited = true;
230         arm_translate_init();
231     }
232 }
233
234 static void arm_cpu_finalizefn(Object *obj)
235 {
236     ARMCPU *cpu = ARM_CPU(obj);
237     g_hash_table_destroy(cpu->cp_regs);
238 }
239
240 static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
241 {
242     CPUState *cs = CPU(dev);
243     ARMCPU *cpu = ARM_CPU(dev);
244     ARMCPUClass *acc = ARM_CPU_GET_CLASS(dev);
245     CPUARMState *env = &cpu->env;
246
247     /* Some features automatically imply others: */
248     if (arm_feature(env, ARM_FEATURE_V8)) {
249         set_feature(env, ARM_FEATURE_V7);
250         set_feature(env, ARM_FEATURE_ARM_DIV);
251         set_feature(env, ARM_FEATURE_LPAE);
252     }
253     if (arm_feature(env, ARM_FEATURE_V7)) {
254         set_feature(env, ARM_FEATURE_VAPA);
255         set_feature(env, ARM_FEATURE_THUMB2);
256         set_feature(env, ARM_FEATURE_MPIDR);
257         if (!arm_feature(env, ARM_FEATURE_M)) {
258             set_feature(env, ARM_FEATURE_V6K);
259         } else {
260             set_feature(env, ARM_FEATURE_V6);
261         }
262     }
263     if (arm_feature(env, ARM_FEATURE_V6K)) {
264         set_feature(env, ARM_FEATURE_V6);
265         set_feature(env, ARM_FEATURE_MVFR);
266     }
267     if (arm_feature(env, ARM_FEATURE_V6)) {
268         set_feature(env, ARM_FEATURE_V5);
269         if (!arm_feature(env, ARM_FEATURE_M)) {
270             set_feature(env, ARM_FEATURE_AUXCR);
271         }
272     }
273     if (arm_feature(env, ARM_FEATURE_V5)) {
274         set_feature(env, ARM_FEATURE_V4T);
275     }
276     if (arm_feature(env, ARM_FEATURE_M)) {
277         set_feature(env, ARM_FEATURE_THUMB_DIV);
278     }
279     if (arm_feature(env, ARM_FEATURE_ARM_DIV)) {
280         set_feature(env, ARM_FEATURE_THUMB_DIV);
281     }
282     if (arm_feature(env, ARM_FEATURE_VFP4)) {
283         set_feature(env, ARM_FEATURE_VFP3);
284     }
285     if (arm_feature(env, ARM_FEATURE_VFP3)) {
286         set_feature(env, ARM_FEATURE_VFP);
287     }
288     if (arm_feature(env, ARM_FEATURE_LPAE)) {
289         set_feature(env, ARM_FEATURE_V7MP);
290         set_feature(env, ARM_FEATURE_PXN);
291     }
292
293     register_cp_regs_for_features(cpu);
294     arm_cpu_register_gdb_regs_for_features(cpu);
295
296     init_cpreg_list(cpu);
297
298     cpu_reset(cs);
299     qemu_init_vcpu(cs);
300
301     acc->parent_realize(dev, errp);
302 }
303
304 static ObjectClass *arm_cpu_class_by_name(const char *cpu_model)
305 {
306     ObjectClass *oc;
307     char *typename;
308
309     if (!cpu_model) {
310         return NULL;
311     }
312
313     typename = g_strdup_printf("%s-" TYPE_ARM_CPU, cpu_model);
314     oc = object_class_by_name(typename);
315     g_free(typename);
316     if (!oc || !object_class_dynamic_cast(oc, TYPE_ARM_CPU) ||
317         object_class_is_abstract(oc)) {
318         return NULL;
319     }
320     return oc;
321 }
322
323 /* CPU models. These are not needed for the AArch64 linux-user build. */
324 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
325
326 static void arm926_initfn(Object *obj)
327 {
328     ARMCPU *cpu = ARM_CPU(obj);
329
330     cpu->dtb_compatible = "arm,arm926";
331     set_feature(&cpu->env, ARM_FEATURE_V5);
332     set_feature(&cpu->env, ARM_FEATURE_VFP);
333     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
334     set_feature(&cpu->env, ARM_FEATURE_CACHE_TEST_CLEAN);
335     cpu->midr = 0x41069265;
336     cpu->reset_fpsid = 0x41011090;
337     cpu->ctr = 0x1dd20d2;
338     cpu->reset_sctlr = 0x00090078;
339 }
340
341 static void arm946_initfn(Object *obj)
342 {
343     ARMCPU *cpu = ARM_CPU(obj);
344
345     cpu->dtb_compatible = "arm,arm946";
346     set_feature(&cpu->env, ARM_FEATURE_V5);
347     set_feature(&cpu->env, ARM_FEATURE_MPU);
348     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
349     cpu->midr = 0x41059461;
350     cpu->ctr = 0x0f004006;
351     cpu->reset_sctlr = 0x00000078;
352 }
353
354 static void arm1026_initfn(Object *obj)
355 {
356     ARMCPU *cpu = ARM_CPU(obj);
357
358     cpu->dtb_compatible = "arm,arm1026";
359     set_feature(&cpu->env, ARM_FEATURE_V5);
360     set_feature(&cpu->env, ARM_FEATURE_VFP);
361     set_feature(&cpu->env, ARM_FEATURE_AUXCR);
362     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
363     set_feature(&cpu->env, ARM_FEATURE_CACHE_TEST_CLEAN);
364     cpu->midr = 0x4106a262;
365     cpu->reset_fpsid = 0x410110a0;
366     cpu->ctr = 0x1dd20d2;
367     cpu->reset_sctlr = 0x00090078;
368     cpu->reset_auxcr = 1;
369     {
370         /* The 1026 had an IFAR at c6,c0,0,1 rather than the ARMv6 c6,c0,0,2 */
371         ARMCPRegInfo ifar = {
372             .name = "IFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 1,
373             .access = PL1_RW,
374             .fieldoffset = offsetof(CPUARMState, cp15.c6_insn),
375             .resetvalue = 0
376         };
377         define_one_arm_cp_reg(cpu, &ifar);
378     }
379 }
380
381 static void arm1136_r2_initfn(Object *obj)
382 {
383     ARMCPU *cpu = ARM_CPU(obj);
384     /* What qemu calls "arm1136_r2" is actually the 1136 r0p2, ie an
385      * older core than plain "arm1136". In particular this does not
386      * have the v6K features.
387      * These ID register values are correct for 1136 but may be wrong
388      * for 1136_r2 (in particular r0p2 does not actually implement most
389      * of the ID registers).
390      */
391
392     cpu->dtb_compatible = "arm,arm1136";
393     set_feature(&cpu->env, ARM_FEATURE_V6);
394     set_feature(&cpu->env, ARM_FEATURE_VFP);
395     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
396     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
397     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
398     cpu->midr = 0x4107b362;
399     cpu->reset_fpsid = 0x410120b4;
400     cpu->mvfr0 = 0x11111111;
401     cpu->mvfr1 = 0x00000000;
402     cpu->ctr = 0x1dd20d2;
403     cpu->reset_sctlr = 0x00050078;
404     cpu->id_pfr0 = 0x111;
405     cpu->id_pfr1 = 0x1;
406     cpu->id_dfr0 = 0x2;
407     cpu->id_afr0 = 0x3;
408     cpu->id_mmfr0 = 0x01130003;
409     cpu->id_mmfr1 = 0x10030302;
410     cpu->id_mmfr2 = 0x01222110;
411     cpu->id_isar0 = 0x00140011;
412     cpu->id_isar1 = 0x12002111;
413     cpu->id_isar2 = 0x11231111;
414     cpu->id_isar3 = 0x01102131;
415     cpu->id_isar4 = 0x141;
416     cpu->reset_auxcr = 7;
417 }
418
419 static void arm1136_initfn(Object *obj)
420 {
421     ARMCPU *cpu = ARM_CPU(obj);
422
423     cpu->dtb_compatible = "arm,arm1136";
424     set_feature(&cpu->env, ARM_FEATURE_V6K);
425     set_feature(&cpu->env, ARM_FEATURE_V6);
426     set_feature(&cpu->env, ARM_FEATURE_VFP);
427     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
428     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
429     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
430     cpu->midr = 0x4117b363;
431     cpu->reset_fpsid = 0x410120b4;
432     cpu->mvfr0 = 0x11111111;
433     cpu->mvfr1 = 0x00000000;
434     cpu->ctr = 0x1dd20d2;
435     cpu->reset_sctlr = 0x00050078;
436     cpu->id_pfr0 = 0x111;
437     cpu->id_pfr1 = 0x1;
438     cpu->id_dfr0 = 0x2;
439     cpu->id_afr0 = 0x3;
440     cpu->id_mmfr0 = 0x01130003;
441     cpu->id_mmfr1 = 0x10030302;
442     cpu->id_mmfr2 = 0x01222110;
443     cpu->id_isar0 = 0x00140011;
444     cpu->id_isar1 = 0x12002111;
445     cpu->id_isar2 = 0x11231111;
446     cpu->id_isar3 = 0x01102131;
447     cpu->id_isar4 = 0x141;
448     cpu->reset_auxcr = 7;
449 }
450
451 static void arm1176_initfn(Object *obj)
452 {
453     ARMCPU *cpu = ARM_CPU(obj);
454
455     cpu->dtb_compatible = "arm,arm1176";
456     set_feature(&cpu->env, ARM_FEATURE_V6K);
457     set_feature(&cpu->env, ARM_FEATURE_VFP);
458     set_feature(&cpu->env, ARM_FEATURE_VAPA);
459     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
460     set_feature(&cpu->env, ARM_FEATURE_CACHE_DIRTY_REG);
461     set_feature(&cpu->env, ARM_FEATURE_CACHE_BLOCK_OPS);
462     cpu->midr = 0x410fb767;
463     cpu->reset_fpsid = 0x410120b5;
464     cpu->mvfr0 = 0x11111111;
465     cpu->mvfr1 = 0x00000000;
466     cpu->ctr = 0x1dd20d2;
467     cpu->reset_sctlr = 0x00050078;
468     cpu->id_pfr0 = 0x111;
469     cpu->id_pfr1 = 0x11;
470     cpu->id_dfr0 = 0x33;
471     cpu->id_afr0 = 0;
472     cpu->id_mmfr0 = 0x01130003;
473     cpu->id_mmfr1 = 0x10030302;
474     cpu->id_mmfr2 = 0x01222100;
475     cpu->id_isar0 = 0x0140011;
476     cpu->id_isar1 = 0x12002111;
477     cpu->id_isar2 = 0x11231121;
478     cpu->id_isar3 = 0x01102131;
479     cpu->id_isar4 = 0x01141;
480     cpu->reset_auxcr = 7;
481 }
482
483 static void arm11mpcore_initfn(Object *obj)
484 {
485     ARMCPU *cpu = ARM_CPU(obj);
486
487     cpu->dtb_compatible = "arm,arm11mpcore";
488     set_feature(&cpu->env, ARM_FEATURE_V6K);
489     set_feature(&cpu->env, ARM_FEATURE_VFP);
490     set_feature(&cpu->env, ARM_FEATURE_VAPA);
491     set_feature(&cpu->env, ARM_FEATURE_MPIDR);
492     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
493     cpu->midr = 0x410fb022;
494     cpu->reset_fpsid = 0x410120b4;
495     cpu->mvfr0 = 0x11111111;
496     cpu->mvfr1 = 0x00000000;
497     cpu->ctr = 0x1d192992; /* 32K icache 32K dcache */
498     cpu->id_pfr0 = 0x111;
499     cpu->id_pfr1 = 0x1;
500     cpu->id_dfr0 = 0;
501     cpu->id_afr0 = 0x2;
502     cpu->id_mmfr0 = 0x01100103;
503     cpu->id_mmfr1 = 0x10020302;
504     cpu->id_mmfr2 = 0x01222000;
505     cpu->id_isar0 = 0x00100011;
506     cpu->id_isar1 = 0x12002111;
507     cpu->id_isar2 = 0x11221011;
508     cpu->id_isar3 = 0x01102131;
509     cpu->id_isar4 = 0x141;
510     cpu->reset_auxcr = 1;
511 }
512
513 static void cortex_m3_initfn(Object *obj)
514 {
515     ARMCPU *cpu = ARM_CPU(obj);
516     set_feature(&cpu->env, ARM_FEATURE_V7);
517     set_feature(&cpu->env, ARM_FEATURE_M);
518     cpu->midr = 0x410fc231;
519 }
520
521 static void arm_v7m_class_init(ObjectClass *oc, void *data)
522 {
523 #ifndef CONFIG_USER_ONLY
524     CPUClass *cc = CPU_CLASS(oc);
525
526     cc->do_interrupt = arm_v7m_cpu_do_interrupt;
527 #endif
528 }
529
530 static const ARMCPRegInfo cortexa8_cp_reginfo[] = {
531     { .name = "L2LOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 0,
532       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
533     { .name = "L2AUXCR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2,
534       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
535     REGINFO_SENTINEL
536 };
537
538 static void cortex_a8_initfn(Object *obj)
539 {
540     ARMCPU *cpu = ARM_CPU(obj);
541
542     cpu->dtb_compatible = "arm,cortex-a8";
543     set_feature(&cpu->env, ARM_FEATURE_V7);
544     set_feature(&cpu->env, ARM_FEATURE_VFP3);
545     set_feature(&cpu->env, ARM_FEATURE_NEON);
546     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
547     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
548     cpu->midr = 0x410fc080;
549     cpu->reset_fpsid = 0x410330c0;
550     cpu->mvfr0 = 0x11110222;
551     cpu->mvfr1 = 0x00011100;
552     cpu->ctr = 0x82048004;
553     cpu->reset_sctlr = 0x00c50078;
554     cpu->id_pfr0 = 0x1031;
555     cpu->id_pfr1 = 0x11;
556     cpu->id_dfr0 = 0x400;
557     cpu->id_afr0 = 0;
558     cpu->id_mmfr0 = 0x31100003;
559     cpu->id_mmfr1 = 0x20000000;
560     cpu->id_mmfr2 = 0x01202000;
561     cpu->id_mmfr3 = 0x11;
562     cpu->id_isar0 = 0x00101111;
563     cpu->id_isar1 = 0x12112111;
564     cpu->id_isar2 = 0x21232031;
565     cpu->id_isar3 = 0x11112131;
566     cpu->id_isar4 = 0x00111142;
567     cpu->clidr = (1 << 27) | (2 << 24) | 3;
568     cpu->ccsidr[0] = 0xe007e01a; /* 16k L1 dcache. */
569     cpu->ccsidr[1] = 0x2007e01a; /* 16k L1 icache. */
570     cpu->ccsidr[2] = 0xf0000000; /* No L2 icache. */
571     cpu->reset_auxcr = 2;
572     define_arm_cp_regs(cpu, cortexa8_cp_reginfo);
573 }
574
575 static const ARMCPRegInfo cortexa9_cp_reginfo[] = {
576     /* power_control should be set to maximum latency. Again,
577      * default to 0 and set by private hook
578      */
579     { .name = "A9_PWRCTL", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 0,
580       .access = PL1_RW, .resetvalue = 0,
581       .fieldoffset = offsetof(CPUARMState, cp15.c15_power_control) },
582     { .name = "A9_DIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 1,
583       .access = PL1_RW, .resetvalue = 0,
584       .fieldoffset = offsetof(CPUARMState, cp15.c15_diagnostic) },
585     { .name = "A9_PWRDIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 2,
586       .access = PL1_RW, .resetvalue = 0,
587       .fieldoffset = offsetof(CPUARMState, cp15.c15_power_diagnostic) },
588     { .name = "NEONBUSY", .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0,
589       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
590     /* TLB lockdown control */
591     { .name = "TLB_LOCKR", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 2,
592       .access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
593     { .name = "TLB_LOCKW", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 4,
594       .access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
595     { .name = "TLB_VA", .cp = 15, .crn = 15, .crm = 5, .opc1 = 5, .opc2 = 2,
596       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
597     { .name = "TLB_PA", .cp = 15, .crn = 15, .crm = 6, .opc1 = 5, .opc2 = 2,
598       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
599     { .name = "TLB_ATTR", .cp = 15, .crn = 15, .crm = 7, .opc1 = 5, .opc2 = 2,
600       .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
601     REGINFO_SENTINEL
602 };
603
604 static void cortex_a9_initfn(Object *obj)
605 {
606     ARMCPU *cpu = ARM_CPU(obj);
607
608     cpu->dtb_compatible = "arm,cortex-a9";
609     set_feature(&cpu->env, ARM_FEATURE_V7);
610     set_feature(&cpu->env, ARM_FEATURE_VFP3);
611     set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
612     set_feature(&cpu->env, ARM_FEATURE_NEON);
613     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
614     /* Note that A9 supports the MP extensions even for
615      * A9UP and single-core A9MP (which are both different
616      * and valid configurations; we don't model A9UP).
617      */
618     set_feature(&cpu->env, ARM_FEATURE_V7MP);
619     cpu->midr = 0x410fc090;
620     cpu->reset_fpsid = 0x41033090;
621     cpu->mvfr0 = 0x11110222;
622     cpu->mvfr1 = 0x01111111;
623     cpu->ctr = 0x80038003;
624     cpu->reset_sctlr = 0x00c50078;
625     cpu->id_pfr0 = 0x1031;
626     cpu->id_pfr1 = 0x11;
627     cpu->id_dfr0 = 0x000;
628     cpu->id_afr0 = 0;
629     cpu->id_mmfr0 = 0x00100103;
630     cpu->id_mmfr1 = 0x20000000;
631     cpu->id_mmfr2 = 0x01230000;
632     cpu->id_mmfr3 = 0x00002111;
633     cpu->id_isar0 = 0x00101111;
634     cpu->id_isar1 = 0x13112111;
635     cpu->id_isar2 = 0x21232041;
636     cpu->id_isar3 = 0x11112131;
637     cpu->id_isar4 = 0x00111142;
638     cpu->clidr = (1 << 27) | (1 << 24) | 3;
639     cpu->ccsidr[0] = 0xe00fe015; /* 16k L1 dcache. */
640     cpu->ccsidr[1] = 0x200fe015; /* 16k L1 icache. */
641     {
642         ARMCPRegInfo cbar = {
643             .name = "CBAR", .cp = 15, .crn = 15,  .crm = 0, .opc1 = 4,
644             .opc2 = 0, .access = PL1_R|PL3_W, .resetvalue = cpu->reset_cbar,
645             .fieldoffset = offsetof(CPUARMState, cp15.c15_config_base_address)
646         };
647         define_one_arm_cp_reg(cpu, &cbar);
648         define_arm_cp_regs(cpu, cortexa9_cp_reginfo);
649     }
650 }
651
652 #ifndef CONFIG_USER_ONLY
653 static int a15_l2ctlr_read(CPUARMState *env, const ARMCPRegInfo *ri,
654                            uint64_t *value)
655 {
656     /* Linux wants the number of processors from here.
657      * Might as well set the interrupt-controller bit too.
658      */
659     *value = ((smp_cpus - 1) << 24) | (1 << 23);
660     return 0;
661 }
662 #endif
663
664 static const ARMCPRegInfo cortexa15_cp_reginfo[] = {
665 #ifndef CONFIG_USER_ONLY
666     { .name = "L2CTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2,
667       .access = PL1_RW, .resetvalue = 0, .readfn = a15_l2ctlr_read,
668       .writefn = arm_cp_write_ignore, },
669 #endif
670     { .name = "L2ECTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 3,
671       .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
672     REGINFO_SENTINEL
673 };
674
675 static void cortex_a15_initfn(Object *obj)
676 {
677     ARMCPU *cpu = ARM_CPU(obj);
678
679     cpu->dtb_compatible = "arm,cortex-a15";
680     set_feature(&cpu->env, ARM_FEATURE_V7);
681     set_feature(&cpu->env, ARM_FEATURE_VFP4);
682     set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
683     set_feature(&cpu->env, ARM_FEATURE_NEON);
684     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
685     set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
686     set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
687     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
688     set_feature(&cpu->env, ARM_FEATURE_LPAE);
689     cpu->kvm_target = QEMU_KVM_ARM_TARGET_CORTEX_A15;
690     cpu->midr = 0x412fc0f1;
691     cpu->reset_fpsid = 0x410430f0;
692     cpu->mvfr0 = 0x10110222;
693     cpu->mvfr1 = 0x11111111;
694     cpu->ctr = 0x8444c004;
695     cpu->reset_sctlr = 0x00c50078;
696     cpu->id_pfr0 = 0x00001131;
697     cpu->id_pfr1 = 0x00011011;
698     cpu->id_dfr0 = 0x02010555;
699     cpu->id_afr0 = 0x00000000;
700     cpu->id_mmfr0 = 0x10201105;
701     cpu->id_mmfr1 = 0x20000000;
702     cpu->id_mmfr2 = 0x01240000;
703     cpu->id_mmfr3 = 0x02102211;
704     cpu->id_isar0 = 0x02101110;
705     cpu->id_isar1 = 0x13112111;
706     cpu->id_isar2 = 0x21232041;
707     cpu->id_isar3 = 0x11112131;
708     cpu->id_isar4 = 0x10011142;
709     cpu->clidr = 0x0a200023;
710     cpu->ccsidr[0] = 0x701fe00a; /* 32K L1 dcache */
711     cpu->ccsidr[1] = 0x201fe00a; /* 32K L1 icache */
712     cpu->ccsidr[2] = 0x711fe07a; /* 4096K L2 unified cache */
713     define_arm_cp_regs(cpu, cortexa15_cp_reginfo);
714 }
715
716 static void ti925t_initfn(Object *obj)
717 {
718     ARMCPU *cpu = ARM_CPU(obj);
719     set_feature(&cpu->env, ARM_FEATURE_V4T);
720     set_feature(&cpu->env, ARM_FEATURE_OMAPCP);
721     cpu->midr = ARM_CPUID_TI925T;
722     cpu->ctr = 0x5109149;
723     cpu->reset_sctlr = 0x00000070;
724 }
725
726 static void sa1100_initfn(Object *obj)
727 {
728     ARMCPU *cpu = ARM_CPU(obj);
729
730     cpu->dtb_compatible = "intel,sa1100";
731     set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
732     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
733     cpu->midr = 0x4401A11B;
734     cpu->reset_sctlr = 0x00000070;
735 }
736
737 static void sa1110_initfn(Object *obj)
738 {
739     ARMCPU *cpu = ARM_CPU(obj);
740     set_feature(&cpu->env, ARM_FEATURE_STRONGARM);
741     set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
742     cpu->midr = 0x6901B119;
743     cpu->reset_sctlr = 0x00000070;
744 }
745
746 static void pxa250_initfn(Object *obj)
747 {
748     ARMCPU *cpu = ARM_CPU(obj);
749
750     cpu->dtb_compatible = "marvell,xscale";
751     set_feature(&cpu->env, ARM_FEATURE_V5);
752     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
753     cpu->midr = 0x69052100;
754     cpu->ctr = 0xd172172;
755     cpu->reset_sctlr = 0x00000078;
756 }
757
758 static void pxa255_initfn(Object *obj)
759 {
760     ARMCPU *cpu = ARM_CPU(obj);
761
762     cpu->dtb_compatible = "marvell,xscale";
763     set_feature(&cpu->env, ARM_FEATURE_V5);
764     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
765     cpu->midr = 0x69052d00;
766     cpu->ctr = 0xd172172;
767     cpu->reset_sctlr = 0x00000078;
768 }
769
770 static void pxa260_initfn(Object *obj)
771 {
772     ARMCPU *cpu = ARM_CPU(obj);
773
774     cpu->dtb_compatible = "marvell,xscale";
775     set_feature(&cpu->env, ARM_FEATURE_V5);
776     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
777     cpu->midr = 0x69052903;
778     cpu->ctr = 0xd172172;
779     cpu->reset_sctlr = 0x00000078;
780 }
781
782 static void pxa261_initfn(Object *obj)
783 {
784     ARMCPU *cpu = ARM_CPU(obj);
785
786     cpu->dtb_compatible = "marvell,xscale";
787     set_feature(&cpu->env, ARM_FEATURE_V5);
788     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
789     cpu->midr = 0x69052d05;
790     cpu->ctr = 0xd172172;
791     cpu->reset_sctlr = 0x00000078;
792 }
793
794 static void pxa262_initfn(Object *obj)
795 {
796     ARMCPU *cpu = ARM_CPU(obj);
797
798     cpu->dtb_compatible = "marvell,xscale";
799     set_feature(&cpu->env, ARM_FEATURE_V5);
800     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
801     cpu->midr = 0x69052d06;
802     cpu->ctr = 0xd172172;
803     cpu->reset_sctlr = 0x00000078;
804 }
805
806 static void pxa270a0_initfn(Object *obj)
807 {
808     ARMCPU *cpu = ARM_CPU(obj);
809
810     cpu->dtb_compatible = "marvell,xscale";
811     set_feature(&cpu->env, ARM_FEATURE_V5);
812     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
813     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
814     cpu->midr = 0x69054110;
815     cpu->ctr = 0xd172172;
816     cpu->reset_sctlr = 0x00000078;
817 }
818
819 static void pxa270a1_initfn(Object *obj)
820 {
821     ARMCPU *cpu = ARM_CPU(obj);
822
823     cpu->dtb_compatible = "marvell,xscale";
824     set_feature(&cpu->env, ARM_FEATURE_V5);
825     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
826     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
827     cpu->midr = 0x69054111;
828     cpu->ctr = 0xd172172;
829     cpu->reset_sctlr = 0x00000078;
830 }
831
832 static void pxa270b0_initfn(Object *obj)
833 {
834     ARMCPU *cpu = ARM_CPU(obj);
835
836     cpu->dtb_compatible = "marvell,xscale";
837     set_feature(&cpu->env, ARM_FEATURE_V5);
838     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
839     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
840     cpu->midr = 0x69054112;
841     cpu->ctr = 0xd172172;
842     cpu->reset_sctlr = 0x00000078;
843 }
844
845 static void pxa270b1_initfn(Object *obj)
846 {
847     ARMCPU *cpu = ARM_CPU(obj);
848
849     cpu->dtb_compatible = "marvell,xscale";
850     set_feature(&cpu->env, ARM_FEATURE_V5);
851     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
852     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
853     cpu->midr = 0x69054113;
854     cpu->ctr = 0xd172172;
855     cpu->reset_sctlr = 0x00000078;
856 }
857
858 static void pxa270c0_initfn(Object *obj)
859 {
860     ARMCPU *cpu = ARM_CPU(obj);
861
862     cpu->dtb_compatible = "marvell,xscale";
863     set_feature(&cpu->env, ARM_FEATURE_V5);
864     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
865     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
866     cpu->midr = 0x69054114;
867     cpu->ctr = 0xd172172;
868     cpu->reset_sctlr = 0x00000078;
869 }
870
871 static void pxa270c5_initfn(Object *obj)
872 {
873     ARMCPU *cpu = ARM_CPU(obj);
874
875     cpu->dtb_compatible = "marvell,xscale";
876     set_feature(&cpu->env, ARM_FEATURE_V5);
877     set_feature(&cpu->env, ARM_FEATURE_XSCALE);
878     set_feature(&cpu->env, ARM_FEATURE_IWMMXT);
879     cpu->midr = 0x69054117;
880     cpu->ctr = 0xd172172;
881     cpu->reset_sctlr = 0x00000078;
882 }
883
884 #ifdef CONFIG_USER_ONLY
885 static void arm_any_initfn(Object *obj)
886 {
887     ARMCPU *cpu = ARM_CPU(obj);
888     set_feature(&cpu->env, ARM_FEATURE_V8);
889     set_feature(&cpu->env, ARM_FEATURE_VFP4);
890     set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);
891     set_feature(&cpu->env, ARM_FEATURE_NEON);
892     set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);
893     set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);
894     set_feature(&cpu->env, ARM_FEATURE_V7MP);
895 #ifdef TARGET_AARCH64
896     set_feature(&cpu->env, ARM_FEATURE_AARCH64);
897 #endif
898     cpu->midr = 0xffffffff;
899 }
900 #endif
901
902 #endif /* !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64) */
903
904 typedef struct ARMCPUInfo {
905     const char *name;
906     void (*initfn)(Object *obj);
907     void (*class_init)(ObjectClass *oc, void *data);
908 } ARMCPUInfo;
909
910 static const ARMCPUInfo arm_cpus[] = {
911 #if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)
912     { .name = "arm926",      .initfn = arm926_initfn },
913     { .name = "arm946",      .initfn = arm946_initfn },
914     { .name = "arm1026",     .initfn = arm1026_initfn },
915     /* What QEMU calls "arm1136-r2" is actually the 1136 r0p2, i.e. an
916      * older core than plain "arm1136". In particular this does not
917      * have the v6K features.
918      */
919     { .name = "arm1136-r2",  .initfn = arm1136_r2_initfn },
920     { .name = "arm1136",     .initfn = arm1136_initfn },
921     { .name = "arm1176",     .initfn = arm1176_initfn },
922     { .name = "arm11mpcore", .initfn = arm11mpcore_initfn },
923     { .name = "cortex-m3",   .initfn = cortex_m3_initfn,
924                              .class_init = arm_v7m_class_init },
925     { .name = "cortex-a8",   .initfn = cortex_a8_initfn },
926     { .name = "cortex-a9",   .initfn = cortex_a9_initfn },
927     { .name = "cortex-a15",  .initfn = cortex_a15_initfn },
928     { .name = "ti925t",      .initfn = ti925t_initfn },
929     { .name = "sa1100",      .initfn = sa1100_initfn },
930     { .name = "sa1110",      .initfn = sa1110_initfn },
931     { .name = "pxa250",      .initfn = pxa250_initfn },
932     { .name = "pxa255",      .initfn = pxa255_initfn },
933     { .name = "pxa260",      .initfn = pxa260_initfn },
934     { .name = "pxa261",      .initfn = pxa261_initfn },
935     { .name = "pxa262",      .initfn = pxa262_initfn },
936     /* "pxa270" is an alias for "pxa270-a0" */
937     { .name = "pxa270",      .initfn = pxa270a0_initfn },
938     { .name = "pxa270-a0",   .initfn = pxa270a0_initfn },
939     { .name = "pxa270-a1",   .initfn = pxa270a1_initfn },
940     { .name = "pxa270-b0",   .initfn = pxa270b0_initfn },
941     { .name = "pxa270-b1",   .initfn = pxa270b1_initfn },
942     { .name = "pxa270-c0",   .initfn = pxa270c0_initfn },
943     { .name = "pxa270-c5",   .initfn = pxa270c5_initfn },
944 #ifdef CONFIG_USER_ONLY
945     { .name = "any",         .initfn = arm_any_initfn },
946 #endif
947 #endif
948 };
949
950 static Property arm_cpu_properties[] = {
951     DEFINE_PROP_BOOL("start-powered-off", ARMCPU, start_powered_off, false),
952     DEFINE_PROP_END_OF_LIST()
953 };
954
955 static void arm_cpu_class_init(ObjectClass *oc, void *data)
956 {
957     ARMCPUClass *acc = ARM_CPU_CLASS(oc);
958     CPUClass *cc = CPU_CLASS(acc);
959     DeviceClass *dc = DEVICE_CLASS(oc);
960
961     acc->parent_realize = dc->realize;
962     dc->realize = arm_cpu_realizefn;
963     dc->props = arm_cpu_properties;
964
965     acc->parent_reset = cc->reset;
966     cc->reset = arm_cpu_reset;
967
968     cc->class_by_name = arm_cpu_class_by_name;
969     cc->do_interrupt = arm_cpu_do_interrupt;
970     cc->dump_state = arm_cpu_dump_state;
971     cc->set_pc = arm_cpu_set_pc;
972     cc->gdb_read_register = arm_cpu_gdb_read_register;
973     cc->gdb_write_register = arm_cpu_gdb_write_register;
974 #ifndef CONFIG_USER_ONLY
975     cc->get_phys_page_debug = arm_cpu_get_phys_page_debug;
976     cc->vmsd = &vmstate_arm_cpu;
977 #endif
978     cc->gdb_num_core_regs = 26;
979     cc->gdb_core_xml_file = "arm-core.xml";
980 }
981
982 static void cpu_register(const ARMCPUInfo *info)
983 {
984     TypeInfo type_info = {
985         .parent = TYPE_ARM_CPU,
986         .instance_size = sizeof(ARMCPU),
987         .instance_init = info->initfn,
988         .class_size = sizeof(ARMCPUClass),
989         .class_init = info->class_init,
990     };
991
992     type_info.name = g_strdup_printf("%s-" TYPE_ARM_CPU, info->name);
993     type_register(&type_info);
994     g_free((void *)type_info.name);
995 }
996
997 static const TypeInfo arm_cpu_type_info = {
998     .name = TYPE_ARM_CPU,
999     .parent = TYPE_CPU,
1000     .instance_size = sizeof(ARMCPU),
1001     .instance_init = arm_cpu_initfn,
1002     .instance_finalize = arm_cpu_finalizefn,
1003     .abstract = true,
1004     .class_size = sizeof(ARMCPUClass),
1005     .class_init = arm_cpu_class_init,
1006 };
1007
1008 static void arm_cpu_register_types(void)
1009 {
1010     int i;
1011
1012     type_register_static(&arm_cpu_type_info);
1013     for (i = 0; i < ARRAY_SIZE(arm_cpus); i++) {
1014         cpu_register(&arm_cpus[i]);
1015     }
1016 }
1017
1018 type_init(arm_cpu_register_types)
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