4 * Copyright (c) 2012 Jia Liu <proljc@gmail.com>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 #include "qemu/osdep.h"
21 #include "qapi/error.h"
23 #include "qemu-common.h"
25 static void openrisc_cpu_set_pc(CPUState *cs, vaddr value)
27 OpenRISCCPU *cpu = OPENRISC_CPU(cs);
32 static bool openrisc_cpu_has_work(CPUState *cs)
34 return cs->interrupt_request & (CPU_INTERRUPT_HARD |
38 /* CPUClass::reset() */
39 static void openrisc_cpu_reset(CPUState *s)
41 OpenRISCCPU *cpu = OPENRISC_CPU(s);
42 OpenRISCCPUClass *occ = OPENRISC_CPU_GET_CLASS(cpu);
46 #ifndef CONFIG_USER_ONLY
47 memset(&cpu->env, 0, offsetof(CPUOpenRISCState, tlb));
49 memset(&cpu->env, 0, offsetof(CPUOpenRISCState, irq));
53 /*tb_flush(&cpu->env); FIXME: Do we need it? */
56 cpu->env.sr = SR_FO | SR_SM;
57 s->exception_index = -1;
59 cpu->env.upr = UPR_UP | UPR_DMP | UPR_IMP | UPR_PICP | UPR_TTP;
60 cpu->env.cpucfgr = CPUCFGR_OB32S | CPUCFGR_OF32S;
61 cpu->env.dmmucfgr = (DMMUCFGR_NTW & (0 << 2)) | (DMMUCFGR_NTS & (6 << 2));
62 cpu->env.immucfgr = (IMMUCFGR_NTW & (0 << 2)) | (IMMUCFGR_NTS & (6 << 2));
64 #ifndef CONFIG_USER_ONLY
65 cpu->env.picmr = 0x00000000;
66 cpu->env.picsr = 0x00000000;
68 cpu->env.ttmr = 0x00000000;
69 cpu->env.ttcr = 0x00000000;
73 static inline void set_feature(OpenRISCCPU *cpu, int feature)
75 cpu->feature |= feature;
76 cpu->env.cpucfgr = cpu->feature;
79 static void openrisc_cpu_realizefn(DeviceState *dev, Error **errp)
81 CPUState *cs = CPU(dev);
82 OpenRISCCPUClass *occ = OPENRISC_CPU_GET_CLASS(dev);
87 occ->parent_realize(dev, errp);
90 static void openrisc_cpu_initfn(Object *obj)
92 CPUState *cs = CPU(obj);
93 OpenRISCCPU *cpu = OPENRISC_CPU(obj);
96 cs->env_ptr = &cpu->env;
97 cpu_exec_init(cs, &error_abort);
99 #ifndef CONFIG_USER_ONLY
100 cpu_openrisc_mmu_init(cpu);
103 if (tcg_enabled() && !inited) {
105 openrisc_translate_init();
111 static ObjectClass *openrisc_cpu_class_by_name(const char *cpu_model)
116 if (cpu_model == NULL) {
120 typename = g_strdup_printf("%s-" TYPE_OPENRISC_CPU, cpu_model);
121 oc = object_class_by_name(typename);
123 if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_OPENRISC_CPU) ||
124 object_class_is_abstract(oc))) {
130 static void or1200_initfn(Object *obj)
132 OpenRISCCPU *cpu = OPENRISC_CPU(obj);
134 set_feature(cpu, OPENRISC_FEATURE_OB32S);
135 set_feature(cpu, OPENRISC_FEATURE_OF32S);
138 static void openrisc_any_initfn(Object *obj)
140 OpenRISCCPU *cpu = OPENRISC_CPU(obj);
142 set_feature(cpu, OPENRISC_FEATURE_OB32S);
145 typedef struct OpenRISCCPUInfo {
147 void (*initfn)(Object *obj);
150 static const OpenRISCCPUInfo openrisc_cpus[] = {
151 { .name = "or1200", .initfn = or1200_initfn },
152 { .name = "any", .initfn = openrisc_any_initfn },
155 static void openrisc_cpu_class_init(ObjectClass *oc, void *data)
157 OpenRISCCPUClass *occ = OPENRISC_CPU_CLASS(oc);
158 CPUClass *cc = CPU_CLASS(occ);
159 DeviceClass *dc = DEVICE_CLASS(oc);
161 occ->parent_realize = dc->realize;
162 dc->realize = openrisc_cpu_realizefn;
164 occ->parent_reset = cc->reset;
165 cc->reset = openrisc_cpu_reset;
167 cc->class_by_name = openrisc_cpu_class_by_name;
168 cc->has_work = openrisc_cpu_has_work;
169 cc->do_interrupt = openrisc_cpu_do_interrupt;
170 cc->cpu_exec_interrupt = openrisc_cpu_exec_interrupt;
171 cc->dump_state = openrisc_cpu_dump_state;
172 cc->set_pc = openrisc_cpu_set_pc;
173 cc->gdb_read_register = openrisc_cpu_gdb_read_register;
174 cc->gdb_write_register = openrisc_cpu_gdb_write_register;
175 #ifdef CONFIG_USER_ONLY
176 cc->handle_mmu_fault = openrisc_cpu_handle_mmu_fault;
178 cc->get_phys_page_debug = openrisc_cpu_get_phys_page_debug;
179 dc->vmsd = &vmstate_openrisc_cpu;
181 cc->gdb_num_core_regs = 32 + 3;
184 * Reason: openrisc_cpu_initfn() calls cpu_exec_init(), which saves
185 * the object in cpus -> dangling pointer after final
188 dc->cannot_destroy_with_object_finalize_yet = true;
191 static void cpu_register(const OpenRISCCPUInfo *info)
193 TypeInfo type_info = {
194 .parent = TYPE_OPENRISC_CPU,
195 .instance_size = sizeof(OpenRISCCPU),
196 .instance_init = info->initfn,
197 .class_size = sizeof(OpenRISCCPUClass),
200 type_info.name = g_strdup_printf("%s-" TYPE_OPENRISC_CPU, info->name);
201 type_register(&type_info);
202 g_free((void *)type_info.name);
205 static const TypeInfo openrisc_cpu_type_info = {
206 .name = TYPE_OPENRISC_CPU,
208 .instance_size = sizeof(OpenRISCCPU),
209 .instance_init = openrisc_cpu_initfn,
211 .class_size = sizeof(OpenRISCCPUClass),
212 .class_init = openrisc_cpu_class_init,
215 static void openrisc_cpu_register_types(void)
219 type_register_static(&openrisc_cpu_type_info);
220 for (i = 0; i < ARRAY_SIZE(openrisc_cpus); i++) {
221 cpu_register(&openrisc_cpus[i]);
225 OpenRISCCPU *cpu_openrisc_init(const char *cpu_model)
227 return OPENRISC_CPU(cpu_generic_init(TYPE_OPENRISC_CPU, cpu_model));
230 /* Sort alphabetically by type name, except for "any". */
231 static gint openrisc_cpu_list_compare(gconstpointer a, gconstpointer b)
233 ObjectClass *class_a = (ObjectClass *)a;
234 ObjectClass *class_b = (ObjectClass *)b;
235 const char *name_a, *name_b;
237 name_a = object_class_get_name(class_a);
238 name_b = object_class_get_name(class_b);
239 if (strcmp(name_a, "any-" TYPE_OPENRISC_CPU) == 0) {
241 } else if (strcmp(name_b, "any-" TYPE_OPENRISC_CPU) == 0) {
244 return strcmp(name_a, name_b);
248 static void openrisc_cpu_list_entry(gpointer data, gpointer user_data)
250 ObjectClass *oc = data;
251 CPUListState *s = user_data;
252 const char *typename;
255 typename = object_class_get_name(oc);
256 name = g_strndup(typename,
257 strlen(typename) - strlen("-" TYPE_OPENRISC_CPU));
258 (*s->cpu_fprintf)(s->file, " %s\n",
263 void cpu_openrisc_list(FILE *f, fprintf_function cpu_fprintf)
267 .cpu_fprintf = cpu_fprintf,
271 list = object_class_get_list(TYPE_OPENRISC_CPU, false);
272 list = g_slist_sort(list, openrisc_cpu_list_compare);
273 (*cpu_fprintf)(f, "Available CPUs:\n");
274 g_slist_foreach(list, openrisc_cpu_list_entry, &s);
278 type_init(openrisc_cpu_register_types)