Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 1 | /* |
| 2 | * QEMU Moxie CPU |
| 3 | * |
| 4 | * Copyright (c) 2013 Anthony Green |
| 5 | * |
| 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 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 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. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 18 | */ |
| 19 | |
Peter Maydell | d24688f | 2016-01-26 18:17:25 +0000 | [diff] [blame] | 20 | #include "qemu/osdep.h" |
Markus Armbruster | da34e65 | 2016-03-14 09:01:28 +0100 | [diff] [blame] | 21 | #include "qapi/error.h" |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 22 | #include "cpu.h" |
| 23 | #include "qemu-common.h" |
| 24 | #include "migration/vmstate.h" |
| 25 | #include "machine.h" |
Paolo Bonzini | 63c9155 | 2016-03-15 13:18:37 +0100 | [diff] [blame] | 26 | #include "exec/exec-all.h" |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 27 | |
Andreas Färber | a10b978 | 2013-06-28 20:43:26 +0200 | [diff] [blame] | 28 | static void moxie_cpu_set_pc(CPUState *cs, vaddr value) |
| 29 | { |
| 30 | MoxieCPU *cpu = MOXIE_CPU(cs); |
| 31 | |
| 32 | cpu->env.pc = value; |
| 33 | } |
| 34 | |
Andreas Färber | 8c2e1b0 | 2013-08-25 18:53:55 +0200 | [diff] [blame] | 35 | static bool moxie_cpu_has_work(CPUState *cs) |
| 36 | { |
| 37 | return cs->interrupt_request & CPU_INTERRUPT_HARD; |
| 38 | } |
| 39 | |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 40 | static void moxie_cpu_reset(CPUState *s) |
| 41 | { |
| 42 | MoxieCPU *cpu = MOXIE_CPU(s); |
| 43 | MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(cpu); |
| 44 | CPUMoxieState *env = &cpu->env; |
| 45 | |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 46 | mcc->parent_reset(s); |
| 47 | |
Alex Bennée | 1f5c00c | 2016-11-14 14:19:17 +0000 | [diff] [blame] | 48 | memset(env, 0, offsetof(CPUMoxieState, end_reset_fields)); |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 49 | env->pc = 0x1000; |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 50 | } |
| 51 | |
Peter Crosthwaite | 9f87a4c | 2015-07-11 18:59:59 -0700 | [diff] [blame] | 52 | static void moxie_cpu_disas_set_info(CPUState *cpu, disassemble_info *info) |
| 53 | { |
| 54 | info->mach = bfd_arch_moxie; |
| 55 | info->print_insn = print_insn_moxie; |
| 56 | } |
| 57 | |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 58 | static void moxie_cpu_realizefn(DeviceState *dev, Error **errp) |
| 59 | { |
Andreas Färber | 14a10fc | 2013-07-27 02:53:25 +0200 | [diff] [blame] | 60 | CPUState *cs = CPU(dev); |
Andreas Färber | c643bed | 2013-05-27 03:23:24 +0200 | [diff] [blame] | 61 | MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(dev); |
Laurent Vivier | ce5b1bb | 2016-10-20 13:26:03 +0200 | [diff] [blame] | 62 | Error *local_err = NULL; |
| 63 | |
| 64 | cpu_exec_realizefn(cs, &local_err); |
| 65 | if (local_err != NULL) { |
| 66 | error_propagate(errp, local_err); |
| 67 | return; |
| 68 | } |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 69 | |
Andreas Färber | 14a10fc | 2013-07-27 02:53:25 +0200 | [diff] [blame] | 70 | qemu_init_vcpu(cs); |
| 71 | cpu_reset(cs); |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 72 | |
Andreas Färber | c643bed | 2013-05-27 03:23:24 +0200 | [diff] [blame] | 73 | mcc->parent_realize(dev, errp); |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 74 | } |
| 75 | |
| 76 | static void moxie_cpu_initfn(Object *obj) |
| 77 | { |
| 78 | CPUState *cs = CPU(obj); |
| 79 | MoxieCPU *cpu = MOXIE_CPU(obj); |
| 80 | static int inited; |
| 81 | |
| 82 | cs->env_ptr = &cpu->env; |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 83 | |
| 84 | if (tcg_enabled() && !inited) { |
| 85 | inited = 1; |
| 86 | moxie_translate_init(); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | static ObjectClass *moxie_cpu_class_by_name(const char *cpu_model) |
| 91 | { |
| 92 | ObjectClass *oc; |
| 93 | |
| 94 | if (cpu_model == NULL) { |
| 95 | return NULL; |
| 96 | } |
| 97 | |
| 98 | oc = object_class_by_name(cpu_model); |
| 99 | if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_MOXIE_CPU) || |
| 100 | object_class_is_abstract(oc))) { |
| 101 | return NULL; |
| 102 | } |
| 103 | return oc; |
| 104 | } |
| 105 | |
| 106 | static void moxie_cpu_class_init(ObjectClass *oc, void *data) |
| 107 | { |
| 108 | DeviceClass *dc = DEVICE_CLASS(oc); |
| 109 | CPUClass *cc = CPU_CLASS(oc); |
| 110 | MoxieCPUClass *mcc = MOXIE_CPU_CLASS(oc); |
| 111 | |
| 112 | mcc->parent_realize = dc->realize; |
| 113 | dc->realize = moxie_cpu_realizefn; |
| 114 | |
| 115 | mcc->parent_reset = cc->reset; |
| 116 | cc->reset = moxie_cpu_reset; |
| 117 | |
| 118 | cc->class_by_name = moxie_cpu_class_by_name; |
| 119 | |
Andreas Färber | 8c2e1b0 | 2013-08-25 18:53:55 +0200 | [diff] [blame] | 120 | cc->has_work = moxie_cpu_has_work; |
Dunrong Huang | 5357406 | 2013-03-31 09:35:53 +0800 | [diff] [blame] | 121 | cc->do_interrupt = moxie_cpu_do_interrupt; |
Andreas Färber | 878096e | 2013-05-27 01:33:50 +0200 | [diff] [blame] | 122 | cc->dump_state = moxie_cpu_dump_state; |
Andreas Färber | a10b978 | 2013-06-28 20:43:26 +0200 | [diff] [blame] | 123 | cc->set_pc = moxie_cpu_set_pc; |
Andreas Färber | 7510454 | 2013-08-26 03:01:33 +0200 | [diff] [blame] | 124 | #ifdef CONFIG_USER_ONLY |
| 125 | cc->handle_mmu_fault = moxie_cpu_handle_mmu_fault; |
| 126 | #else |
Andreas Färber | 00b941e | 2013-06-29 18:55:54 +0200 | [diff] [blame] | 127 | cc->get_phys_page_debug = moxie_cpu_get_phys_page_debug; |
| 128 | cc->vmsd = &vmstate_moxie_cpu; |
| 129 | #endif |
Peter Crosthwaite | 9f87a4c | 2015-07-11 18:59:59 -0700 | [diff] [blame] | 130 | cc->disas_set_info = moxie_cpu_disas_set_info; |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | static void moxielite_initfn(Object *obj) |
| 134 | { |
| 135 | /* Set cpu feature flags */ |
| 136 | } |
| 137 | |
| 138 | static void moxie_any_initfn(Object *obj) |
| 139 | { |
| 140 | /* Set cpu feature flags */ |
| 141 | } |
| 142 | |
| 143 | typedef struct MoxieCPUInfo { |
| 144 | const char *name; |
| 145 | void (*initfn)(Object *obj); |
| 146 | } MoxieCPUInfo; |
| 147 | |
| 148 | static const MoxieCPUInfo moxie_cpus[] = { |
| 149 | { .name = "MoxieLite", .initfn = moxielite_initfn }, |
| 150 | { .name = "any", .initfn = moxie_any_initfn }, |
| 151 | }; |
| 152 | |
| 153 | MoxieCPU *cpu_moxie_init(const char *cpu_model) |
| 154 | { |
Andreas Färber | 9262685 | 2014-03-04 03:17:10 +0100 | [diff] [blame] | 155 | return MOXIE_CPU(cpu_generic_init(TYPE_MOXIE_CPU, cpu_model)); |
Anthony Green | 525bd32 | 2013-03-18 15:49:22 -0400 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | static void cpu_register(const MoxieCPUInfo *info) |
| 159 | { |
| 160 | TypeInfo type_info = { |
| 161 | .parent = TYPE_MOXIE_CPU, |
| 162 | .instance_size = sizeof(MoxieCPU), |
| 163 | .instance_init = info->initfn, |
| 164 | .class_size = sizeof(MoxieCPUClass), |
| 165 | }; |
| 166 | |
| 167 | type_info.name = g_strdup_printf("%s-" TYPE_MOXIE_CPU, info->name); |
| 168 | type_register(&type_info); |
| 169 | g_free((void *)type_info.name); |
| 170 | } |
| 171 | |
| 172 | static const TypeInfo moxie_cpu_type_info = { |
| 173 | .name = TYPE_MOXIE_CPU, |
| 174 | .parent = TYPE_CPU, |
| 175 | .instance_size = sizeof(MoxieCPU), |
| 176 | .instance_init = moxie_cpu_initfn, |
| 177 | .class_size = sizeof(MoxieCPUClass), |
| 178 | .class_init = moxie_cpu_class_init, |
| 179 | }; |
| 180 | |
| 181 | static void moxie_cpu_register_types(void) |
| 182 | { |
| 183 | int i; |
| 184 | type_register_static(&moxie_cpu_type_info); |
| 185 | for (i = 0; i < ARRAY_SIZE(moxie_cpus); i++) { |
| 186 | cpu_register(&moxie_cpus[i]); |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | type_init(moxie_cpu_register_types) |