Merge remote-tracking branch 'luiz/queue/qmp' 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 static void mb_cpu_set_pc(CPUState *cs, vaddr value)
30 {
31     MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
32
33     cpu->env.sregs[SR_PC] = value;
34 }
35
36 /* CPUClass::reset() */
37 static void mb_cpu_reset(CPUState *s)
38 {
39     MicroBlazeCPU *cpu = MICROBLAZE_CPU(s);
40     MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_GET_CLASS(cpu);
41     CPUMBState *env = &cpu->env;
42
43     mcc->parent_reset(s);
44
45     memset(env, 0, offsetof(CPUMBState, breakpoints));
46     env->res_addr = RES_ADDR_NONE;
47     tlb_flush(env, 1);
48
49     /* Disable stack protector.  */
50     env->shr = ~0;
51
52     env->pvr.regs[0] = PVR0_PVR_FULL_MASK \
53                        | PVR0_USE_BARREL_MASK \
54                        | PVR0_USE_DIV_MASK \
55                        | PVR0_USE_HW_MUL_MASK \
56                        | PVR0_USE_EXC_MASK \
57                        | PVR0_USE_ICACHE_MASK \
58                        | PVR0_USE_DCACHE_MASK \
59                        | PVR0_USE_MMU \
60                        | (0xb << 8);
61     env->pvr.regs[2] = PVR2_D_OPB_MASK \
62                         | PVR2_D_LMB_MASK \
63                         | PVR2_I_OPB_MASK \
64                         | PVR2_I_LMB_MASK \
65                         | PVR2_USE_MSR_INSTR \
66                         | PVR2_USE_PCMP_INSTR \
67                         | PVR2_USE_BARREL_MASK \
68                         | PVR2_USE_DIV_MASK \
69                         | PVR2_USE_HW_MUL_MASK \
70                         | PVR2_USE_MUL64_MASK \
71                         | PVR2_USE_FPU_MASK \
72                         | PVR2_USE_FPU2_MASK \
73                         | PVR2_FPU_EXC_MASK \
74                         | 0;
75     env->pvr.regs[10] = 0x0c000000; /* Default to spartan 3a dsp family.  */
76     env->pvr.regs[11] = PVR11_USE_MMU | (16 << 17);
77
78 #if defined(CONFIG_USER_ONLY)
79     /* start in user mode with interrupts enabled.  */
80     env->sregs[SR_MSR] = MSR_EE | MSR_IE | MSR_VM | MSR_UM;
81     env->pvr.regs[10] = 0x0c000000; /* Spartan 3a dsp.  */
82 #else
83     env->sregs[SR_MSR] = 0;
84     mmu_init(&env->mmu);
85     env->mmu.c_mmu = 3;
86     env->mmu.c_mmu_tlb_access = 3;
87     env->mmu.c_mmu_zones = 16;
88 #endif
89 }
90
91 static void mb_cpu_realizefn(DeviceState *dev, Error **errp)
92 {
93     CPUState *cs = CPU(dev);
94     MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_GET_CLASS(dev);
95
96     cpu_reset(cs);
97     qemu_init_vcpu(cs);
98
99     mcc->parent_realize(dev, errp);
100 }
101
102 static void mb_cpu_initfn(Object *obj)
103 {
104     CPUState *cs = CPU(obj);
105     MicroBlazeCPU *cpu = MICROBLAZE_CPU(obj);
106     CPUMBState *env = &cpu->env;
107     static bool tcg_initialized;
108
109     cs->env_ptr = env;
110     cpu_exec_init(env);
111
112     set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
113
114     if (tcg_enabled() && !tcg_initialized) {
115         tcg_initialized = true;
116         mb_tcg_init();
117     }
118 }
119
120 static const VMStateDescription vmstate_mb_cpu = {
121     .name = "cpu",
122     .unmigratable = 1,
123 };
124
125 static Property mb_properties[] = {
126     DEFINE_PROP_UINT32("xlnx.base-vectors", MicroBlazeCPU, base_vectors, 0),
127     DEFINE_PROP_END_OF_LIST(),
128 };
129
130 static void mb_cpu_class_init(ObjectClass *oc, void *data)
131 {
132     DeviceClass *dc = DEVICE_CLASS(oc);
133     CPUClass *cc = CPU_CLASS(oc);
134     MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_CLASS(oc);
135
136     mcc->parent_realize = dc->realize;
137     dc->realize = mb_cpu_realizefn;
138
139     mcc->parent_reset = cc->reset;
140     cc->reset = mb_cpu_reset;
141
142     cc->do_interrupt = mb_cpu_do_interrupt;
143     cc->dump_state = mb_cpu_dump_state;
144     cc->set_pc = mb_cpu_set_pc;
145     cc->gdb_read_register = mb_cpu_gdb_read_register;
146     cc->gdb_write_register = mb_cpu_gdb_write_register;
147 #ifndef CONFIG_USER_ONLY
148     cc->do_unassigned_access = mb_cpu_unassigned_access;
149     cc->get_phys_page_debug = mb_cpu_get_phys_page_debug;
150 #endif
151     dc->vmsd = &vmstate_mb_cpu;
152     dc->props = mb_properties;
153     cc->gdb_num_core_regs = 32 + 5;
154 }
155
156 static const TypeInfo mb_cpu_type_info = {
157     .name = TYPE_MICROBLAZE_CPU,
158     .parent = TYPE_CPU,
159     .instance_size = sizeof(MicroBlazeCPU),
160     .instance_init = mb_cpu_initfn,
161     .class_size = sizeof(MicroBlazeCPUClass),
162     .class_init = mb_cpu_class_init,
163 };
164
165 static void mb_cpu_register_types(void)
166 {
167     type_register_static(&mb_cpu_type_info);
168 }
169
170 type_init(mb_cpu_register_types)