target-unicore32/cpu.c

   1 /*
   2  * QEMU UniCore32 CPU
   3  *
   4  * Copyright (c) 2010-2011 GUAN Xue-tao
   5  * Copyright (c) 2012 SUSE LINUX Products GmbH
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * Contributions from 2012-04-01 on are considered under GPL version 2,
  12  * or (at your option) any later version.
  13  */
  14
  15 #include "cpu-qom.h"
  16 #include "qemu-common.h"
  17
  18 static inline void set_feature(CPUUniCore32State *env, int feature)
  19 {
  20     env->features |= feature;
  21 }
  22
  23 /* CPU models */
  24
  25 typedef struct UniCore32CPUInfo {
  26     const char *name;
  27     void (*instance_init)(Object *obj);
  28 } UniCore32CPUInfo;
  29
  30 static void unicore_ii_cpu_initfn(Object *obj)
  31 {
  32     UniCore32CPU *cpu = UNICORE32_CPU(obj);
  33     CPUUniCore32State *env = &cpu->env;
  34
  35     env->cp0.c0_cpuid = 0x40010863;
  36
  37     set_feature(env, UC32_HWCAP_CMOV);
  38     set_feature(env, UC32_HWCAP_UCF64);
  39     env->ucf64.xregs[UC32_UCF64_FPSCR] = 0;
  40     env->cp0.c0_cachetype = 0x1dd20d2;
  41     env->cp0.c1_sys = 0x00090078;
  42 }
  43
  44 static void uc32_any_cpu_initfn(Object *obj)
  45 {
  46     UniCore32CPU *cpu = UNICORE32_CPU(obj);
  47     CPUUniCore32State *env = &cpu->env;
  48
  49     env->cp0.c0_cpuid = 0xffffffff;
  50
  51     set_feature(env, UC32_HWCAP_CMOV);
  52     set_feature(env, UC32_HWCAP_UCF64);
  53 }
  54
  55 static const UniCore32CPUInfo uc32_cpus[] = {
  56     { .name = "UniCore-II", .instance_init = unicore_ii_cpu_initfn },
  57     { .name = "any",        .instance_init = uc32_any_cpu_initfn },
  58 };
  59
  60 static void uc32_cpu_initfn(Object *obj)
  61 {
  62     UniCore32CPU *cpu = UNICORE32_CPU(obj);
  63     CPUUniCore32State *env = &cpu->env;
  64
  65     cpu_exec_init(env);
  66     env->cpu_model_str = object_get_typename(obj);
  67
  68     env->uncached_asr = ASR_MODE_USER;
  69     env->regs[31] = 0;
  70
  71     tlb_flush(env, 1);
  72 }
  73
  74 static void uc32_register_cpu_type(const UniCore32CPUInfo *info)
  75 {
  76     TypeInfo type_info = {
  77         .name = info->name,
  78         .parent = TYPE_UNICORE32_CPU,
  79         .instance_init = info->instance_init,
  80     };
  81
  82     type_register_static(&type_info);
  83 }
  84
  85 static const TypeInfo uc32_cpu_type_info = {
  86     .name = TYPE_UNICORE32_CPU,
  87     .parent = TYPE_CPU,
  88     .instance_size = sizeof(UniCore32CPU),
  89     .instance_init = uc32_cpu_initfn,
  90     .abstract = true,
  91     .class_size = sizeof(UniCore32CPUClass),
  92 };
  93
  94 static void uc32_cpu_register_types(void)
  95 {
  96     int i;
  97
  98     type_register_static(&uc32_cpu_type_info);
  99     for (i = 0; i < ARRAY_SIZE(uc32_cpus); i++) {
 100         uc32_register_cpu_type(&uc32_cpus[i]);
 101     }
 102 }
 103
 104 type_init(uc32_cpu_register_types)