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/*
* QEMU OpenRISC CPU
*
* Copyright (c) 2012 Jia Liu <proljc@gmail.com>
*
* 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 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/>.
*/
#include "cpu.h"
#include "qemu-common.h"
/* CPUClass::reset() */
static void openrisc_cpu_reset(CPUState *s)
{
OpenRISCCPU *cpu = OPENRISC_CPU(s);
OpenRISCCPUClass *occ = OPENRISC_CPU_GET_CLASS(cpu);
if (qemu_loglevel_mask(CPU_LOG_RESET)) {
qemu_log("CPU Reset (CPU %d)\n", s->cpu_index);
log_cpu_state(&cpu->env, 0);
}
occ->parent_reset(s);
memset(&cpu->env, 0, offsetof(CPUOpenRISCState, breakpoints));
tlb_flush(&cpu->env, 1);
/*tb_flush(&cpu->env); FIXME: Do we need it? */
cpu->env.pc = 0x100;
cpu->env.sr = SR_FO | SR_SM;
cpu->env.exception_index = -1;
cpu->env.upr = UPR_UP | UPR_DMP | UPR_IMP | UPR_PICP | UPR_TTP;
cpu->env.cpucfgr = CPUCFGR_OB32S | CPUCFGR_OF32S;
cpu->env.dmmucfgr = (DMMUCFGR_NTW & (0 << 2)) | (DMMUCFGR_NTS & (6 << 2));
cpu->env.immucfgr = (IMMUCFGR_NTW & (0 << 2)) | (IMMUCFGR_NTS & (6 << 2));
#ifndef CONFIG_USER_ONLY
cpu->env.picmr = 0x00000000;
cpu->env.picsr = 0x00000000;
cpu->env.ttmr = 0x00000000;
cpu->env.ttcr = 0x00000000;
#endif
}
static inline void set_feature(OpenRISCCPU *cpu, int feature)
{
cpu->feature |= feature;
cpu->env.cpucfgr = cpu->feature;
}
void openrisc_cpu_realize(Object *obj, Error **errp)
{
OpenRISCCPU *cpu = OPENRISC_CPU(obj);
qemu_init_vcpu(&cpu->env);
cpu_reset(CPU(cpu));
}
static void openrisc_cpu_initfn(Object *obj)
{
OpenRISCCPU *cpu = OPENRISC_CPU(obj);
static int inited;
cpu_exec_init(&cpu->env);
#ifndef CONFIG_USER_ONLY
cpu_openrisc_mmu_init(cpu);
#endif
if (tcg_enabled() && !inited) {
inited = 1;
openrisc_translate_init();
}
}
/* CPU models */
static ObjectClass *openrisc_cpu_class_by_name(const char *cpu_model)
{
ObjectClass *oc;
if (cpu_model == NULL) {
return NULL;
}
oc = object_class_by_name(cpu_model);
if (oc != NULL && !object_class_dynamic_cast(oc, TYPE_OPENRISC_CPU)) {
return NULL;
}
return oc;
}
static void or1200_initfn(Object *obj)
{
OpenRISCCPU *cpu = OPENRISC_CPU(obj);
set_feature(cpu, OPENRISC_FEATURE_OB32S);
set_feature(cpu, OPENRISC_FEATURE_OF32S);
}
static void openrisc_any_initfn(Object *obj)
{
OpenRISCCPU *cpu = OPENRISC_CPU(obj);
set_feature(cpu, OPENRISC_FEATURE_OB32S);
}
typedef struct OpenRISCCPUInfo {
const char *name;
void (*initfn)(Object *obj);
} OpenRISCCPUInfo;
static const OpenRISCCPUInfo openrisc_cpus[] = {
{ .name = "or1200", .initfn = or1200_initfn },
{ .name = "any", .initfn = openrisc_any_initfn },
};
static void openrisc_cpu_class_init(ObjectClass *oc, void *data)
{
OpenRISCCPUClass *occ = OPENRISC_CPU_CLASS(oc);
CPUClass *cc = CPU_CLASS(occ);
occ->parent_reset = cc->reset;
cc->reset = openrisc_cpu_reset;
cc->class_by_name = openrisc_cpu_class_by_name;
}
static void cpu_register(const OpenRISCCPUInfo *info)
{
TypeInfo type_info = {
.name = info->name,
.parent = TYPE_OPENRISC_CPU,
.instance_size = sizeof(OpenRISCCPU),
.instance_init = info->initfn,
.class_size = sizeof(OpenRISCCPUClass),
};
type_register_static(&type_info);
}
static const TypeInfo openrisc_cpu_type_info = {
.name = TYPE_OPENRISC_CPU,
.parent = TYPE_CPU,
.instance_size = sizeof(OpenRISCCPU),
.instance_init = openrisc_cpu_initfn,
.abstract = false,
.class_size = sizeof(OpenRISCCPUClass),
.class_init = openrisc_cpu_class_init,
};
static void openrisc_cpu_register_types(void)
{
int i;
type_register_static(&openrisc_cpu_type_info);
for (i = 0; i < ARRAY_SIZE(openrisc_cpus); i++) {
cpu_register(&openrisc_cpus[i]);
}
}
OpenRISCCPU *cpu_openrisc_init(const char *cpu_model)
{
OpenRISCCPU *cpu;
ObjectClass *oc;
oc = openrisc_cpu_class_by_name(cpu_model);
if (oc == NULL) {
return NULL;
}
cpu = OPENRISC_CPU(object_new(object_class_get_name(oc)));
cpu->env.cpu_model_str = cpu_model;
openrisc_cpu_realize(OBJECT(cpu), NULL);
return cpu;
}
/* Sort alphabetically by type name, except for "any". */
static gint openrisc_cpu_list_compare(gconstpointer a, gconstpointer b)
{
ObjectClass *class_a = (ObjectClass *)a;
ObjectClass *class_b = (ObjectClass *)b;
const char *name_a, *name_b;
name_a = object_class_get_name(class_a);
name_b = object_class_get_name(class_b);
if (strcmp(name_a, "any") == 0) {
return 1;
} else if (strcmp(name_b, "any") == 0) {
return -1;
} else {
return strcmp(name_a, name_b);
}
}
static void openrisc_cpu_list_entry(gpointer data, gpointer user_data)
{
ObjectClass *oc = data;
CPUListState *s = user_data;
(*s->cpu_fprintf)(s->file, " %s\n",
object_class_get_name(oc));
}
void cpu_openrisc_list(FILE *f, fprintf_function cpu_fprintf)
{
CPUListState s = {
.file = f,
.cpu_fprintf = cpu_fprintf,
};
GSList *list;
list = object_class_get_list(TYPE_OPENRISC_CPU, false);
list = g_slist_sort(list, openrisc_cpu_list_compare);
(*cpu_fprintf)(f, "Available CPUs:\n");
g_slist_foreach(list, openrisc_cpu_list_entry, &s);
g_slist_free(list);
}
type_init(openrisc_cpu_register_types)
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