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