Andreas Färber | e739a48 | 2012-04-11 23:12:05 +0200 | [diff] [blame] | 1 | /* |
| 2 | * QEMU CRIS CPU |
| 3 | * |
Andreas Färber | 1c3b52f | 2012-04-11 23:35:40 +0200 | [diff] [blame] | 4 | * Copyright (c) 2008 AXIS Communications AB |
| 5 | * Written by Edgar E. Iglesias. |
| 6 | * |
Andreas Färber | e739a48 | 2012-04-11 23:12:05 +0200 | [diff] [blame] | 7 | * Copyright (c) 2012 SUSE LINUX Products GmbH |
| 8 | * |
| 9 | * This library is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU Lesser General Public |
| 11 | * License as published by the Free Software Foundation; either |
| 12 | * version 2.1 of the License, or (at your option) any later version. |
| 13 | * |
| 14 | * This library is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * Lesser General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public |
| 20 | * License along with this library; if not, see |
| 21 | * <http://www.gnu.org/licenses/lgpl-2.1.html> |
| 22 | */ |
| 23 | |
| 24 | #include "cpu.h" |
| 25 | #include "qemu-common.h" |
Andreas Färber | 1c3b52f | 2012-04-11 23:35:40 +0200 | [diff] [blame] | 26 | #include "mmu.h" |
Andreas Färber | e739a48 | 2012-04-11 23:12:05 +0200 | [diff] [blame] | 27 | |
| 28 | |
| 29 | /* CPUClass::reset() */ |
| 30 | static void cris_cpu_reset(CPUState *s) |
| 31 | { |
| 32 | CRISCPU *cpu = CRIS_CPU(s); |
| 33 | CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(cpu); |
| 34 | CPUCRISState *env = &cpu->env; |
Andreas Färber | 1c3b52f | 2012-04-11 23:35:40 +0200 | [diff] [blame] | 35 | uint32_t vr; |
| 36 | |
| 37 | if (qemu_loglevel_mask(CPU_LOG_RESET)) { |
| 38 | qemu_log("CPU Reset (CPU %d)\n", env->cpu_index); |
| 39 | log_cpu_state(env, 0); |
| 40 | } |
Andreas Färber | e739a48 | 2012-04-11 23:12:05 +0200 | [diff] [blame] | 41 | |
| 42 | ccc->parent_reset(s); |
| 43 | |
Andreas Färber | 1c3b52f | 2012-04-11 23:35:40 +0200 | [diff] [blame] | 44 | vr = env->pregs[PR_VR]; |
| 45 | memset(env, 0, offsetof(CPUCRISState, breakpoints)); |
| 46 | env->pregs[PR_VR] = vr; |
| 47 | tlb_flush(env, 1); |
| 48 | |
| 49 | #if defined(CONFIG_USER_ONLY) |
| 50 | /* start in user mode with interrupts enabled. */ |
| 51 | env->pregs[PR_CCS] |= U_FLAG | I_FLAG | P_FLAG; |
| 52 | #else |
| 53 | cris_mmu_init(env); |
| 54 | env->pregs[PR_CCS] = 0; |
| 55 | #endif |
Andreas Färber | e739a48 | 2012-04-11 23:12:05 +0200 | [diff] [blame] | 56 | } |
| 57 | |
Andreas Färber | aa0d126 | 2012-04-11 23:41:06 +0200 | [diff] [blame] | 58 | static void cris_cpu_initfn(Object *obj) |
| 59 | { |
| 60 | CRISCPU *cpu = CRIS_CPU(obj); |
| 61 | CPUCRISState *env = &cpu->env; |
| 62 | |
| 63 | cpu_exec_init(env); |
| 64 | } |
| 65 | |
Andreas Färber | e739a48 | 2012-04-11 23:12:05 +0200 | [diff] [blame] | 66 | static void cris_cpu_class_init(ObjectClass *oc, void *data) |
| 67 | { |
| 68 | CPUClass *cc = CPU_CLASS(oc); |
| 69 | CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); |
| 70 | |
| 71 | ccc->parent_reset = cc->reset; |
| 72 | cc->reset = cris_cpu_reset; |
| 73 | } |
| 74 | |
| 75 | static const TypeInfo cris_cpu_type_info = { |
| 76 | .name = TYPE_CRIS_CPU, |
| 77 | .parent = TYPE_CPU, |
| 78 | .instance_size = sizeof(CRISCPU), |
Andreas Färber | aa0d126 | 2012-04-11 23:41:06 +0200 | [diff] [blame] | 79 | .instance_init = cris_cpu_initfn, |
Andreas Färber | e739a48 | 2012-04-11 23:12:05 +0200 | [diff] [blame] | 80 | .abstract = false, |
| 81 | .class_size = sizeof(CRISCPUClass), |
| 82 | .class_init = cris_cpu_class_init, |
| 83 | }; |
| 84 | |
| 85 | static void cris_cpu_register_types(void) |
| 86 | { |
| 87 | type_register_static(&cris_cpu_type_info); |
| 88 | } |
| 89 | |
| 90 | type_init(cris_cpu_register_types) |