root / target-openrisc / cpu.c @ 478032a9
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1 | e67db06e | Jia Liu | /*
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2 | e67db06e | Jia Liu | * QEMU OpenRISC CPU
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3 | e67db06e | Jia Liu | *
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4 | e67db06e | Jia Liu | * Copyright (c) 2012 Jia Liu <proljc@gmail.com>
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5 | e67db06e | Jia Liu | *
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6 | e67db06e | Jia Liu | * This library is free software; you can redistribute it and/or
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7 | e67db06e | Jia Liu | * modify it under the terms of the GNU Lesser General Public
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8 | e67db06e | Jia Liu | * License as published by the Free Software Foundation; either
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9 | e67db06e | Jia Liu | * version 2 of the License, or (at your option) any later version.
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10 | e67db06e | Jia Liu | *
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11 | e67db06e | Jia Liu | * This library is distributed in the hope that it will be useful,
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12 | e67db06e | Jia Liu | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | e67db06e | Jia Liu | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | e67db06e | Jia Liu | * Lesser General Public License for more details.
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15 | e67db06e | Jia Liu | *
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16 | e67db06e | Jia Liu | * You should have received a copy of the GNU Lesser General Public
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17 | e67db06e | Jia Liu | * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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18 | e67db06e | Jia Liu | */
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19 | e67db06e | Jia Liu | |
20 | e67db06e | Jia Liu | #include "cpu.h" |
21 | e67db06e | Jia Liu | #include "qemu-common.h" |
22 | e67db06e | Jia Liu | |
23 | e67db06e | Jia Liu | /* CPUClass::reset() */
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24 | e67db06e | Jia Liu | static void openrisc_cpu_reset(CPUState *s) |
25 | e67db06e | Jia Liu | { |
26 | e67db06e | Jia Liu | OpenRISCCPU *cpu = OPENRISC_CPU(s); |
27 | e67db06e | Jia Liu | OpenRISCCPUClass *occ = OPENRISC_CPU_GET_CLASS(cpu); |
28 | e67db06e | Jia Liu | |
29 | e67db06e | Jia Liu | if (qemu_loglevel_mask(CPU_LOG_RESET)) {
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30 | 55e5c285 | Andreas Färber | qemu_log("CPU Reset (CPU %d)\n", s->cpu_index);
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31 | e67db06e | Jia Liu | log_cpu_state(&cpu->env, 0);
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32 | e67db06e | Jia Liu | } |
33 | e67db06e | Jia Liu | |
34 | e67db06e | Jia Liu | occ->parent_reset(s); |
35 | e67db06e | Jia Liu | |
36 | e67db06e | Jia Liu | memset(&cpu->env, 0, offsetof(CPUOpenRISCState, breakpoints));
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37 | e67db06e | Jia Liu | |
38 | e67db06e | Jia Liu | tlb_flush(&cpu->env, 1);
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39 | e67db06e | Jia Liu | /*tb_flush(&cpu->env); FIXME: Do we need it? */
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40 | e67db06e | Jia Liu | |
41 | e67db06e | Jia Liu | cpu->env.pc = 0x100;
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42 | e67db06e | Jia Liu | cpu->env.sr = SR_FO | SR_SM; |
43 | e67db06e | Jia Liu | cpu->env.exception_index = -1;
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44 | e67db06e | Jia Liu | |
45 | e67db06e | Jia Liu | cpu->env.upr = UPR_UP | UPR_DMP | UPR_IMP | UPR_PICP | UPR_TTP; |
46 | e67db06e | Jia Liu | cpu->env.cpucfgr = CPUCFGR_OB32S | CPUCFGR_OF32S; |
47 | e67db06e | Jia Liu | cpu->env.dmmucfgr = (DMMUCFGR_NTW & (0 << 2)) | (DMMUCFGR_NTS & (6 << 2)); |
48 | e67db06e | Jia Liu | cpu->env.immucfgr = (IMMUCFGR_NTW & (0 << 2)) | (IMMUCFGR_NTS & (6 << 2)); |
49 | e67db06e | Jia Liu | |
50 | e67db06e | Jia Liu | #ifndef CONFIG_USER_ONLY
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51 | e67db06e | Jia Liu | cpu->env.picmr = 0x00000000;
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52 | e67db06e | Jia Liu | cpu->env.picsr = 0x00000000;
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53 | e67db06e | Jia Liu | |
54 | e67db06e | Jia Liu | cpu->env.ttmr = 0x00000000;
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55 | e67db06e | Jia Liu | cpu->env.ttcr = 0x00000000;
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56 | e67db06e | Jia Liu | #endif
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57 | e67db06e | Jia Liu | } |
58 | e67db06e | Jia Liu | |
59 | e67db06e | Jia Liu | static inline void set_feature(OpenRISCCPU *cpu, int feature) |
60 | e67db06e | Jia Liu | { |
61 | e67db06e | Jia Liu | cpu->feature |= feature; |
62 | e67db06e | Jia Liu | cpu->env.cpucfgr = cpu->feature; |
63 | e67db06e | Jia Liu | } |
64 | e67db06e | Jia Liu | |
65 | e67db06e | Jia Liu | void openrisc_cpu_realize(Object *obj, Error **errp)
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66 | e67db06e | Jia Liu | { |
67 | e67db06e | Jia Liu | OpenRISCCPU *cpu = OPENRISC_CPU(obj); |
68 | e67db06e | Jia Liu | |
69 | e67db06e | Jia Liu | qemu_init_vcpu(&cpu->env); |
70 | e67db06e | Jia Liu | cpu_reset(CPU(cpu)); |
71 | e67db06e | Jia Liu | } |
72 | e67db06e | Jia Liu | |
73 | e67db06e | Jia Liu | static void openrisc_cpu_initfn(Object *obj) |
74 | e67db06e | Jia Liu | { |
75 | e67db06e | Jia Liu | OpenRISCCPU *cpu = OPENRISC_CPU(obj); |
76 | e67db06e | Jia Liu | static int inited; |
77 | e67db06e | Jia Liu | |
78 | e67db06e | Jia Liu | cpu_exec_init(&cpu->env); |
79 | e67db06e | Jia Liu | |
80 | e67db06e | Jia Liu | #ifndef CONFIG_USER_ONLY
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81 | e67db06e | Jia Liu | cpu_openrisc_mmu_init(cpu); |
82 | e67db06e | Jia Liu | #endif
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83 | e67db06e | Jia Liu | |
84 | e67db06e | Jia Liu | if (tcg_enabled() && !inited) {
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85 | e67db06e | Jia Liu | inited = 1;
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86 | e67db06e | Jia Liu | openrisc_translate_init(); |
87 | e67db06e | Jia Liu | } |
88 | e67db06e | Jia Liu | } |
89 | e67db06e | Jia Liu | |
90 | e67db06e | Jia Liu | /* CPU models */
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91 | bd039ce0 | Andreas Färber | |
92 | bd039ce0 | Andreas Färber | static ObjectClass *openrisc_cpu_class_by_name(const char *cpu_model) |
93 | bd039ce0 | Andreas Färber | { |
94 | bd039ce0 | Andreas Färber | ObjectClass *oc; |
95 | bd039ce0 | Andreas Färber | |
96 | bd039ce0 | Andreas Färber | if (cpu_model == NULL) { |
97 | bd039ce0 | Andreas Färber | return NULL; |
98 | bd039ce0 | Andreas Färber | } |
99 | bd039ce0 | Andreas Färber | |
100 | bd039ce0 | Andreas Färber | oc = object_class_by_name(cpu_model); |
101 | c432b784 | Andreas Färber | if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_OPENRISC_CPU) || |
102 | c432b784 | Andreas Färber | object_class_is_abstract(oc))) { |
103 | bd039ce0 | Andreas Färber | return NULL; |
104 | bd039ce0 | Andreas Färber | } |
105 | bd039ce0 | Andreas Färber | return oc;
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106 | bd039ce0 | Andreas Färber | } |
107 | bd039ce0 | Andreas Färber | |
108 | e67db06e | Jia Liu | static void or1200_initfn(Object *obj) |
109 | e67db06e | Jia Liu | { |
110 | e67db06e | Jia Liu | OpenRISCCPU *cpu = OPENRISC_CPU(obj); |
111 | e67db06e | Jia Liu | |
112 | e67db06e | Jia Liu | set_feature(cpu, OPENRISC_FEATURE_OB32S); |
113 | e67db06e | Jia Liu | set_feature(cpu, OPENRISC_FEATURE_OF32S); |
114 | e67db06e | Jia Liu | } |
115 | e67db06e | Jia Liu | |
116 | e67db06e | Jia Liu | static void openrisc_any_initfn(Object *obj) |
117 | e67db06e | Jia Liu | { |
118 | e67db06e | Jia Liu | OpenRISCCPU *cpu = OPENRISC_CPU(obj); |
119 | e67db06e | Jia Liu | |
120 | e67db06e | Jia Liu | set_feature(cpu, OPENRISC_FEATURE_OB32S); |
121 | e67db06e | Jia Liu | } |
122 | e67db06e | Jia Liu | |
123 | e67db06e | Jia Liu | typedef struct OpenRISCCPUInfo { |
124 | e67db06e | Jia Liu | const char *name; |
125 | e67db06e | Jia Liu | void (*initfn)(Object *obj);
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126 | e67db06e | Jia Liu | } OpenRISCCPUInfo; |
127 | e67db06e | Jia Liu | |
128 | e67db06e | Jia Liu | static const OpenRISCCPUInfo openrisc_cpus[] = { |
129 | e67db06e | Jia Liu | { .name = "or1200", .initfn = or1200_initfn },
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130 | e67db06e | Jia Liu | { .name = "any", .initfn = openrisc_any_initfn },
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131 | e67db06e | Jia Liu | }; |
132 | e67db06e | Jia Liu | |
133 | e67db06e | Jia Liu | static void openrisc_cpu_class_init(ObjectClass *oc, void *data) |
134 | e67db06e | Jia Liu | { |
135 | e67db06e | Jia Liu | OpenRISCCPUClass *occ = OPENRISC_CPU_CLASS(oc); |
136 | e67db06e | Jia Liu | CPUClass *cc = CPU_CLASS(occ); |
137 | e67db06e | Jia Liu | |
138 | e67db06e | Jia Liu | occ->parent_reset = cc->reset; |
139 | e67db06e | Jia Liu | cc->reset = openrisc_cpu_reset; |
140 | bd039ce0 | Andreas Färber | |
141 | bd039ce0 | Andreas Färber | cc->class_by_name = openrisc_cpu_class_by_name; |
142 | e67db06e | Jia Liu | } |
143 | e67db06e | Jia Liu | |
144 | e67db06e | Jia Liu | static void cpu_register(const OpenRISCCPUInfo *info) |
145 | e67db06e | Jia Liu | { |
146 | e67db06e | Jia Liu | TypeInfo type_info = { |
147 | e67db06e | Jia Liu | .parent = TYPE_OPENRISC_CPU, |
148 | e67db06e | Jia Liu | .instance_size = sizeof(OpenRISCCPU),
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149 | e67db06e | Jia Liu | .instance_init = info->initfn, |
150 | e67db06e | Jia Liu | .class_size = sizeof(OpenRISCCPUClass),
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151 | e67db06e | Jia Liu | }; |
152 | e67db06e | Jia Liu | |
153 | 478032a9 | Andreas Färber | type_info.name = g_strdup_printf("%s-" TYPE_OPENRISC_CPU, info->name);
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154 | a1ebd6ce | Andreas Färber | type_register(&type_info); |
155 | 478032a9 | Andreas Färber | g_free((void *)type_info.name);
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156 | e67db06e | Jia Liu | } |
157 | e67db06e | Jia Liu | |
158 | e67db06e | Jia Liu | static const TypeInfo openrisc_cpu_type_info = { |
159 | e67db06e | Jia Liu | .name = TYPE_OPENRISC_CPU, |
160 | e67db06e | Jia Liu | .parent = TYPE_CPU, |
161 | e67db06e | Jia Liu | .instance_size = sizeof(OpenRISCCPU),
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162 | e67db06e | Jia Liu | .instance_init = openrisc_cpu_initfn, |
163 | bc755a00 | Andreas Färber | .abstract = true,
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164 | e67db06e | Jia Liu | .class_size = sizeof(OpenRISCCPUClass),
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165 | e67db06e | Jia Liu | .class_init = openrisc_cpu_class_init, |
166 | e67db06e | Jia Liu | }; |
167 | e67db06e | Jia Liu | |
168 | e67db06e | Jia Liu | static void openrisc_cpu_register_types(void) |
169 | e67db06e | Jia Liu | { |
170 | e67db06e | Jia Liu | int i;
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171 | e67db06e | Jia Liu | |
172 | e67db06e | Jia Liu | type_register_static(&openrisc_cpu_type_info); |
173 | e67db06e | Jia Liu | for (i = 0; i < ARRAY_SIZE(openrisc_cpus); i++) { |
174 | e67db06e | Jia Liu | cpu_register(&openrisc_cpus[i]); |
175 | e67db06e | Jia Liu | } |
176 | e67db06e | Jia Liu | } |
177 | e67db06e | Jia Liu | |
178 | e67db06e | Jia Liu | OpenRISCCPU *cpu_openrisc_init(const char *cpu_model) |
179 | e67db06e | Jia Liu | { |
180 | e67db06e | Jia Liu | OpenRISCCPU *cpu; |
181 | bd039ce0 | Andreas Färber | ObjectClass *oc; |
182 | e67db06e | Jia Liu | |
183 | bd039ce0 | Andreas Färber | oc = openrisc_cpu_class_by_name(cpu_model); |
184 | bd039ce0 | Andreas Färber | if (oc == NULL) { |
185 | e67db06e | Jia Liu | return NULL; |
186 | e67db06e | Jia Liu | } |
187 | bd039ce0 | Andreas Färber | cpu = OPENRISC_CPU(object_new(object_class_get_name(oc))); |
188 | e67db06e | Jia Liu | cpu->env.cpu_model_str = cpu_model; |
189 | e67db06e | Jia Liu | |
190 | e67db06e | Jia Liu | openrisc_cpu_realize(OBJECT(cpu), NULL);
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191 | e67db06e | Jia Liu | |
192 | e67db06e | Jia Liu | return cpu;
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193 | e67db06e | Jia Liu | } |
194 | e67db06e | Jia Liu | |
195 | e67db06e | Jia Liu | /* Sort alphabetically by type name, except for "any". */
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196 | e67db06e | Jia Liu | static gint openrisc_cpu_list_compare(gconstpointer a, gconstpointer b)
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197 | e67db06e | Jia Liu | { |
198 | e67db06e | Jia Liu | ObjectClass *class_a = (ObjectClass *)a; |
199 | e67db06e | Jia Liu | ObjectClass *class_b = (ObjectClass *)b; |
200 | e67db06e | Jia Liu | const char *name_a, *name_b; |
201 | e67db06e | Jia Liu | |
202 | e67db06e | Jia Liu | name_a = object_class_get_name(class_a); |
203 | e67db06e | Jia Liu | name_b = object_class_get_name(class_b); |
204 | 478032a9 | Andreas Färber | if (strcmp(name_a, "any-" TYPE_OPENRISC_CPU) == 0) { |
205 | e67db06e | Jia Liu | return 1; |
206 | 478032a9 | Andreas Färber | } else if (strcmp(name_b, "any-" TYPE_OPENRISC_CPU) == 0) { |
207 | e67db06e | Jia Liu | return -1; |
208 | e67db06e | Jia Liu | } else {
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209 | e67db06e | Jia Liu | return strcmp(name_a, name_b);
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210 | e67db06e | Jia Liu | } |
211 | e67db06e | Jia Liu | } |
212 | e67db06e | Jia Liu | |
213 | e67db06e | Jia Liu | static void openrisc_cpu_list_entry(gpointer data, gpointer user_data) |
214 | e67db06e | Jia Liu | { |
215 | e67db06e | Jia Liu | ObjectClass *oc = data; |
216 | 8486af93 | Andreas Färber | CPUListState *s = user_data; |
217 | 478032a9 | Andreas Färber | const char *typename; |
218 | 478032a9 | Andreas Färber | char *name;
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219 | e67db06e | Jia Liu | |
220 | 478032a9 | Andreas Färber | typename = object_class_get_name(oc); |
221 | 478032a9 | Andreas Färber | name = g_strndup(typename, |
222 | 478032a9 | Andreas Färber | strlen(typename) - strlen("-" TYPE_OPENRISC_CPU));
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223 | e67db06e | Jia Liu | (*s->cpu_fprintf)(s->file, " %s\n",
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224 | 478032a9 | Andreas Färber | name); |
225 | 478032a9 | Andreas Färber | g_free(name); |
226 | e67db06e | Jia Liu | } |
227 | e67db06e | Jia Liu | |
228 | e67db06e | Jia Liu | void cpu_openrisc_list(FILE *f, fprintf_function cpu_fprintf)
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229 | e67db06e | Jia Liu | { |
230 | 8486af93 | Andreas Färber | CPUListState s = { |
231 | e67db06e | Jia Liu | .file = f, |
232 | e67db06e | Jia Liu | .cpu_fprintf = cpu_fprintf, |
233 | e67db06e | Jia Liu | }; |
234 | e67db06e | Jia Liu | GSList *list; |
235 | e67db06e | Jia Liu | |
236 | e67db06e | Jia Liu | list = object_class_get_list(TYPE_OPENRISC_CPU, false);
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237 | e67db06e | Jia Liu | list = g_slist_sort(list, openrisc_cpu_list_compare); |
238 | e67db06e | Jia Liu | (*cpu_fprintf)(f, "Available CPUs:\n");
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239 | e67db06e | Jia Liu | g_slist_foreach(list, openrisc_cpu_list_entry, &s); |
240 | e67db06e | Jia Liu | g_slist_free(list); |
241 | e67db06e | Jia Liu | } |
242 | e67db06e | Jia Liu | |
243 | e67db06e | Jia Liu | type_init(openrisc_cpu_register_types) |