Merge remote-tracking branch 'stefanha/block' into staging
[sdk/emulator/qemu.git] / target-microblaze / cpu.c
1 /*
2  * QEMU MicroBlaze CPU
3  *
4  * Copyright (c) 2009 Edgar E. Iglesias
5  * Copyright (c) 2009-2012 PetaLogix Qld Pty Ltd.
6  * Copyright (c) 2012 SUSE LINUX Products GmbH
7  *
8  * This library is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * This library is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with this library; if not, see
20  * <http://www.gnu.org/licenses/lgpl-2.1.html>
21  */
22
23 #include "cpu.h"
24 #include "qemu-common.h"
25 #include "hw/qdev-properties.h"
26 #include "migration/vmstate.h"
27
28
29 /* CPUClass::reset() */
30 static void mb_cpu_reset(CPUState *s)
31 {
32     MicroBlazeCPU *cpu = MICROBLAZE_CPU(s);
33     MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_GET_CLASS(cpu);
34     CPUMBState *env = &cpu->env;
35
36     if (qemu_loglevel_mask(CPU_LOG_RESET)) {
37         qemu_log("CPU Reset (CPU %d)\n", s->cpu_index);
38         log_cpu_state(env, 0);
39     }
40
41     mcc->parent_reset(s);
42
43     memset(env, 0, offsetof(CPUMBState, breakpoints));
44     env->res_addr = RES_ADDR_NONE;
45     tlb_flush(env, 1);
46
47     /* Disable stack protector.  */
48     env->shr = ~0;
49
50     env->pvr.regs[0] = PVR0_PVR_FULL_MASK \
51                        | PVR0_USE_BARREL_MASK \
52                        | PVR0_USE_DIV_MASK \
53                        | PVR0_USE_HW_MUL_MASK \
54                        | PVR0_USE_EXC_MASK \
55                        | PVR0_USE_ICACHE_MASK \
56                        | PVR0_USE_DCACHE_MASK \
57                        | PVR0_USE_MMU \
58                        | (0xb << 8);
59     env->pvr.regs[2] = PVR2_D_OPB_MASK \
60                         | PVR2_D_LMB_MASK \
61                         | PVR2_I_OPB_MASK \
62                         | PVR2_I_LMB_MASK \
63                         | PVR2_USE_MSR_INSTR \
64                         | PVR2_USE_PCMP_INSTR \
65                         | PVR2_USE_BARREL_MASK \
66                         | PVR2_USE_DIV_MASK \
67                         | PVR2_USE_HW_MUL_MASK \
68                         | PVR2_USE_MUL64_MASK \
69                         | PVR2_USE_FPU_MASK \
70                         | PVR2_USE_FPU2_MASK \
71                         | PVR2_FPU_EXC_MASK \
72                         | 0;
73     env->pvr.regs[10] = 0x0c000000; /* Default to spartan 3a dsp family.  */
74     env->pvr.regs[11] = PVR11_USE_MMU | (16 << 17);
75
76 #if defined(CONFIG_USER_ONLY)
77     /* start in user mode with interrupts enabled.  */
78     env->sregs[SR_MSR] = MSR_EE | MSR_IE | MSR_VM | MSR_UM;
79     env->pvr.regs[10] = 0x0c000000; /* Spartan 3a dsp.  */
80 #else
81     env->sregs[SR_MSR] = 0;
82     mmu_init(&env->mmu);
83     env->mmu.c_mmu = 3;
84     env->mmu.c_mmu_tlb_access = 3;
85     env->mmu.c_mmu_zones = 16;
86 #endif
87 }
88
89 static void mb_cpu_realizefn(DeviceState *dev, Error **errp)
90 {
91     MicroBlazeCPU *cpu = MICROBLAZE_CPU(dev);
92     MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_GET_CLASS(dev);
93
94     cpu_reset(CPU(cpu));
95     qemu_init_vcpu(&cpu->env);
96
97     mcc->parent_realize(dev, errp);
98 }
99
100 static void mb_cpu_initfn(Object *obj)
101 {
102     CPUState *cs = CPU(obj);
103     MicroBlazeCPU *cpu = MICROBLAZE_CPU(obj);
104     CPUMBState *env = &cpu->env;
105     static bool tcg_initialized;
106
107     cs->env_ptr = env;
108     cpu_exec_init(env);
109
110     set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
111
112     if (tcg_enabled() && !tcg_initialized) {
113         tcg_initialized = true;
114         mb_tcg_init();
115     }
116 }
117
118 static const VMStateDescription vmstate_mb_cpu = {
119     .name = "cpu",
120     .unmigratable = 1,
121 };
122
123 static Property mb_properties[] = {
124     DEFINE_PROP_UINT32("xlnx.base-vectors", MicroBlazeCPU, base_vectors, 0),
125     DEFINE_PROP_END_OF_LIST(),
126 };
127
128 static void mb_cpu_class_init(ObjectClass *oc, void *data)
129 {
130     DeviceClass *dc = DEVICE_CLASS(oc);
131     CPUClass *cc = CPU_CLASS(oc);
132     MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_CLASS(oc);
133
134     mcc->parent_realize = dc->realize;
135     dc->realize = mb_cpu_realizefn;
136
137     mcc->parent_reset = cc->reset;
138     cc->reset = mb_cpu_reset;
139
140     cc->do_interrupt = mb_cpu_do_interrupt;
141     dc->vmsd = &vmstate_mb_cpu;
142
143     dc->props = mb_properties;
144 }
145
146 static const TypeInfo mb_cpu_type_info = {
147     .name = TYPE_MICROBLAZE_CPU,
148     .parent = TYPE_CPU,
149     .instance_size = sizeof(MicroBlazeCPU),
150     .instance_init = mb_cpu_initfn,
151     .class_size = sizeof(MicroBlazeCPUClass),
152     .class_init = mb_cpu_class_init,
153 };
154
155 static void mb_cpu_register_types(void)
156 {
157     type_register_static(&mb_cpu_type_info);
158 }
159
160 type_init(mb_cpu_register_types)