/* * QEMU UniCore32 CPU * * Copyright (c) 2010-2012 Guan Xuetao * Copyright (c) 2012 SUSE LINUX Products GmbH * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Contributions from 2012-04-01 on are considered under GPL version 2, * or (at your option) any later version. */ #include "qemu/osdep.h" #include "qapi/error.h" #include "cpu.h" #include "qemu-common.h" #include "migration/vmstate.h" #include "exec/exec-all.h" static void uc32_cpu_set_pc(CPUState *cs, vaddr value) { UniCore32CPU *cpu = UNICORE32_CPU(cs); cpu->env.regs[31] = value; } static bool uc32_cpu_has_work(CPUState *cs) { return cs->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB); } static inline void set_feature(CPUUniCore32State *env, int feature) { env->features |= feature; } /* CPU models */ static ObjectClass *uc32_cpu_class_by_name(const char *cpu_model) { ObjectClass *oc; char *typename; if (cpu_model == NULL) { return NULL; } typename = g_strdup_printf("%s-" TYPE_UNICORE32_CPU, cpu_model); oc = object_class_by_name(typename); g_free(typename); if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_UNICORE32_CPU) || object_class_is_abstract(oc))) { oc = NULL; } return oc; } typedef struct UniCore32CPUInfo { const char *name; void (*instance_init)(Object *obj); } UniCore32CPUInfo; static void unicore_ii_cpu_initfn(Object *obj) { UniCore32CPU *cpu = UNICORE32_CPU(obj); CPUUniCore32State *env = &cpu->env; env->cp0.c0_cpuid = 0x4d000863; env->cp0.c0_cachetype = 0x0d152152; env->cp0.c1_sys = 0x2000; env->cp0.c2_base = 0x0; env->cp0.c3_faultstatus = 0x0; env->cp0.c4_faultaddr = 0x0; env->ucf64.xregs[UC32_UCF64_FPSCR] = 0; set_feature(env, UC32_HWCAP_CMOV); set_feature(env, UC32_HWCAP_UCF64); } static void uc32_any_cpu_initfn(Object *obj) { UniCore32CPU *cpu = UNICORE32_CPU(obj); CPUUniCore32State *env = &cpu->env; env->cp0.c0_cpuid = 0xffffffff; env->ucf64.xregs[UC32_UCF64_FPSCR] = 0; set_feature(env, UC32_HWCAP_CMOV); set_feature(env, UC32_HWCAP_UCF64); } static const UniCore32CPUInfo uc32_cpus[] = { { .name = "UniCore-II", .instance_init = unicore_ii_cpu_initfn }, { .name = "any", .instance_init = uc32_any_cpu_initfn }, }; static void uc32_cpu_realizefn(DeviceState *dev, Error **errp) { UniCore32CPUClass *ucc = UNICORE32_CPU_GET_CLASS(dev); qemu_init_vcpu(CPU(dev)); ucc->parent_realize(dev, errp); } static void uc32_cpu_initfn(Object *obj) { CPUState *cs = CPU(obj); UniCore32CPU *cpu = UNICORE32_CPU(obj); CPUUniCore32State *env = &cpu->env; static bool inited; cs->env_ptr = env; cpu_exec_init(cs, &error_abort); #ifdef CONFIG_USER_ONLY env->uncached_asr = ASR_MODE_USER; env->regs[31] = 0; #else env->uncached_asr = ASR_MODE_PRIV; env->regs[31] = 0x03000000; #endif tlb_flush(cs, 1); if (tcg_enabled() && !inited) { inited = true; uc32_translate_init(); } } static const VMStateDescription vmstate_uc32_cpu = { .name = "cpu", .unmigratable = 1, }; static void uc32_cpu_class_init(ObjectClass *oc, void *data) { DeviceClass *dc = DEVICE_CLASS(oc); CPUClass *cc = CPU_CLASS(oc); UniCore32CPUClass *ucc = UNICORE32_CPU_CLASS(oc); ucc->parent_realize = dc->realize; dc->realize = uc32_cpu_realizefn; cc->class_by_name = uc32_cpu_class_by_name; cc->has_work = uc32_cpu_has_work; cc->do_interrupt = uc32_cpu_do_interrupt; cc->cpu_exec_interrupt = uc32_cpu_exec_interrupt; cc->dump_state = uc32_cpu_dump_state; cc->set_pc = uc32_cpu_set_pc; #ifdef CONFIG_USER_ONLY cc->handle_mmu_fault = uc32_cpu_handle_mmu_fault; #else cc->get_phys_page_debug = uc32_cpu_get_phys_page_debug; #endif dc->vmsd = &vmstate_uc32_cpu; /* * Reason: uc32_cpu_initfn() calls cpu_exec_init(), which saves * the object in cpus -> dangling pointer after final * object_unref(). */ dc->cannot_destroy_with_object_finalize_yet = true; } static void uc32_register_cpu_type(const UniCore32CPUInfo *info) { TypeInfo type_info = { .parent = TYPE_UNICORE32_CPU, .instance_init = info->instance_init, }; type_info.name = g_strdup_printf("%s-" TYPE_UNICORE32_CPU, info->name); type_register(&type_info); g_free((void *)type_info.name); } static const TypeInfo uc32_cpu_type_info = { .name = TYPE_UNICORE32_CPU, .parent = TYPE_CPU, .instance_size = sizeof(UniCore32CPU), .instance_init = uc32_cpu_initfn, .abstract = true, .class_size = sizeof(UniCore32CPUClass), .class_init = uc32_cpu_class_init, }; static void uc32_cpu_register_types(void) { int i; type_register_static(&uc32_cpu_type_info); for (i = 0; i < ARRAY_SIZE(uc32_cpus); i++) { uc32_register_cpu_type(&uc32_cpus[i]); } } type_init(uc32_cpu_register_types)