/* * QEMU MicroBlaze CPU * * Copyright (c) 2009 Edgar E. Iglesias * Copyright (c) 2009-2012 PetaLogix Qld Pty Ltd. * Copyright (c) 2012 SUSE LINUX Products GmbH * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, see * <http://www.gnu.org/licenses/lgpl-2.1.html> */ #include "cpu.h" #include "qemu-common.h" /* CPUClass::reset() */ static void mb_cpu_reset(CPUState *s) { MicroBlazeCPU *cpu = MICROBLAZE_CPU(s); MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_GET_CLASS(cpu); CPUMBState *env = &cpu->env; if (qemu_loglevel_mask(CPU_LOG_RESET)) { qemu_log("CPU Reset (CPU %d)\n", env->cpu_index); log_cpu_state(env, 0); } mcc->parent_reset(s); memset(env, 0, offsetof(CPUMBState, breakpoints)); env->res_addr = RES_ADDR_NONE; tlb_flush(env, 1); /* Disable stack protector. */ env->shr = ~0; env->pvr.regs[0] = PVR0_PVR_FULL_MASK \ | PVR0_USE_BARREL_MASK \ | PVR0_USE_DIV_MASK \ | PVR0_USE_HW_MUL_MASK \ | PVR0_USE_EXC_MASK \ | PVR0_USE_ICACHE_MASK \ | PVR0_USE_DCACHE_MASK \ | PVR0_USE_MMU \ | (0xb << 8); env->pvr.regs[2] = PVR2_D_OPB_MASK \ | PVR2_D_LMB_MASK \ | PVR2_I_OPB_MASK \ | PVR2_I_LMB_MASK \ | PVR2_USE_MSR_INSTR \ | PVR2_USE_PCMP_INSTR \ | PVR2_USE_BARREL_MASK \ | PVR2_USE_DIV_MASK \ | PVR2_USE_HW_MUL_MASK \ | PVR2_USE_MUL64_MASK \ | PVR2_USE_FPU_MASK \ | PVR2_USE_FPU2_MASK \ | PVR2_FPU_EXC_MASK \ | 0; env->pvr.regs[10] = 0x0c000000; /* Default to spartan 3a dsp family. */ env->pvr.regs[11] = PVR11_USE_MMU | (16 << 17); #if defined(CONFIG_USER_ONLY) /* start in user mode with interrupts enabled. */ env->sregs[SR_MSR] = MSR_EE | MSR_IE | MSR_VM | MSR_UM; env->pvr.regs[10] = 0x0c000000; /* Spartan 3a dsp. */ #else env->sregs[SR_MSR] = 0; mmu_init(&env->mmu); env->mmu.c_mmu = 3; env->mmu.c_mmu_tlb_access = 3; env->mmu.c_mmu_zones = 16; #endif } static void mb_cpu_initfn(Object *obj) { MicroBlazeCPU *cpu = MICROBLAZE_CPU(obj); CPUMBState *env = &cpu->env; cpu_exec_init(env); set_float_rounding_mode(float_round_nearest_even, &env->fp_status); } static void mb_cpu_class_init(ObjectClass *oc, void *data) { CPUClass *cc = CPU_CLASS(oc); MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_CLASS(oc); mcc->parent_reset = cc->reset; cc->reset = mb_cpu_reset; } static const TypeInfo mb_cpu_type_info = { .name = TYPE_MICROBLAZE_CPU, .parent = TYPE_CPU, .instance_size = sizeof(MicroBlazeCPU), .instance_init = mb_cpu_initfn, .class_size = sizeof(MicroBlazeCPUClass), .class_init = mb_cpu_class_init, }; static void mb_cpu_register_types(void) { type_register_static(&mb_cpu_type_info); } type_init(mb_cpu_register_types)