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ae0f5e9e AF |
1 | /* |
2 | * QEMU UniCore32 CPU | |
3 | * | |
d48813dd | 4 | * Copyright (c) 2010-2012 Guan Xuetao |
ae0f5e9e AF |
5 | * Copyright (c) 2012 SUSE LINUX Products GmbH |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * Contributions from 2012-04-01 on are considered under GPL version 2, | |
12 | * or (at your option) any later version. | |
13 | */ | |
14 | ||
3993c6bd | 15 | #include "cpu.h" |
ae0f5e9e AF |
16 | #include "qemu-common.h" |
17 | ||
8df9082d AF |
18 | static inline void set_feature(CPUUniCore32State *env, int feature) |
19 | { | |
20 | env->features |= feature; | |
21 | } | |
22 | ||
ae0f5e9e AF |
23 | /* CPU models */ |
24 | ||
d89e1218 AF |
25 | static ObjectClass *uc32_cpu_class_by_name(const char *cpu_model) |
26 | { | |
27 | ObjectClass *oc; | |
28 | ||
29 | if (cpu_model == NULL) { | |
30 | return NULL; | |
31 | } | |
32 | ||
33 | oc = object_class_by_name(cpu_model); | |
4933908a AF |
34 | if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_UNICORE32_CPU) || |
35 | object_class_is_abstract(oc))) { | |
d89e1218 AF |
36 | oc = NULL; |
37 | } | |
38 | return oc; | |
39 | } | |
40 | ||
ae0f5e9e AF |
41 | typedef struct UniCore32CPUInfo { |
42 | const char *name; | |
43 | void (*instance_init)(Object *obj); | |
44 | } UniCore32CPUInfo; | |
45 | ||
46 | static void unicore_ii_cpu_initfn(Object *obj) | |
47 | { | |
48 | UniCore32CPU *cpu = UNICORE32_CPU(obj); | |
49 | CPUUniCore32State *env = &cpu->env; | |
50 | ||
d48813dd GX |
51 | env->cp0.c0_cpuid = 0x4d000863; |
52 | env->cp0.c0_cachetype = 0x0d152152; | |
53 | env->cp0.c1_sys = 0x2000; | |
54 | env->cp0.c2_base = 0x0; | |
55 | env->cp0.c3_faultstatus = 0x0; | |
56 | env->cp0.c4_faultaddr = 0x0; | |
57 | env->ucf64.xregs[UC32_UCF64_FPSCR] = 0; | |
8df9082d AF |
58 | |
59 | set_feature(env, UC32_HWCAP_CMOV); | |
60 | set_feature(env, UC32_HWCAP_UCF64); | |
ae0f5e9e AF |
61 | } |
62 | ||
63 | static void uc32_any_cpu_initfn(Object *obj) | |
64 | { | |
65 | UniCore32CPU *cpu = UNICORE32_CPU(obj); | |
66 | CPUUniCore32State *env = &cpu->env; | |
67 | ||
68 | env->cp0.c0_cpuid = 0xffffffff; | |
d48813dd | 69 | env->ucf64.xregs[UC32_UCF64_FPSCR] = 0; |
8df9082d AF |
70 | |
71 | set_feature(env, UC32_HWCAP_CMOV); | |
72 | set_feature(env, UC32_HWCAP_UCF64); | |
ae0f5e9e AF |
73 | } |
74 | ||
75 | static const UniCore32CPUInfo uc32_cpus[] = { | |
76 | { .name = "UniCore-II", .instance_init = unicore_ii_cpu_initfn }, | |
77 | { .name = "any", .instance_init = uc32_any_cpu_initfn }, | |
78 | }; | |
79 | ||
80 | static void uc32_cpu_initfn(Object *obj) | |
81 | { | |
82 | UniCore32CPU *cpu = UNICORE32_CPU(obj); | |
83 | CPUUniCore32State *env = &cpu->env; | |
84 | ||
85 | cpu_exec_init(env); | |
86 | env->cpu_model_str = object_get_typename(obj); | |
87 | ||
d48813dd | 88 | #ifdef CONFIG_USER_ONLY |
ae0f5e9e AF |
89 | env->uncached_asr = ASR_MODE_USER; |
90 | env->regs[31] = 0; | |
d48813dd GX |
91 | #else |
92 | env->uncached_asr = ASR_MODE_PRIV; | |
93 | env->regs[31] = 0x03000000; | |
94 | #endif | |
ae0f5e9e AF |
95 | |
96 | tlb_flush(env, 1); | |
97 | } | |
98 | ||
d89e1218 AF |
99 | static void uc32_cpu_class_init(ObjectClass *oc, void *data) |
100 | { | |
101 | CPUClass *cc = CPU_CLASS(oc); | |
102 | ||
103 | cc->class_by_name = uc32_cpu_class_by_name; | |
104 | } | |
105 | ||
ae0f5e9e AF |
106 | static void uc32_register_cpu_type(const UniCore32CPUInfo *info) |
107 | { | |
108 | TypeInfo type_info = { | |
109 | .name = info->name, | |
110 | .parent = TYPE_UNICORE32_CPU, | |
111 | .instance_init = info->instance_init, | |
112 | }; | |
113 | ||
87fb5811 | 114 | type_register(&type_info); |
ae0f5e9e AF |
115 | } |
116 | ||
117 | static const TypeInfo uc32_cpu_type_info = { | |
118 | .name = TYPE_UNICORE32_CPU, | |
119 | .parent = TYPE_CPU, | |
120 | .instance_size = sizeof(UniCore32CPU), | |
121 | .instance_init = uc32_cpu_initfn, | |
122 | .abstract = true, | |
123 | .class_size = sizeof(UniCore32CPUClass), | |
d89e1218 | 124 | .class_init = uc32_cpu_class_init, |
ae0f5e9e AF |
125 | }; |
126 | ||
127 | static void uc32_cpu_register_types(void) | |
128 | { | |
129 | int i; | |
130 | ||
131 | type_register_static(&uc32_cpu_type_info); | |
132 | for (i = 0; i < ARRAY_SIZE(uc32_cpus); i++) { | |
133 | uc32_register_cpu_type(&uc32_cpus[i]); | |
134 | } | |
135 | } | |
136 | ||
137 | type_init(uc32_cpu_register_types) |