qemu-e2k/target/openrisc/cpu.c

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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 2.1 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/>.
*/
#include "qemu/osdep.h"
2016-03-14 09:01:28 +01:00
#include "qapi/error.h"
#include "qemu/qemu-print.h"
#include "cpu.h"
#include "exec/exec-all.h"
static void openrisc_cpu_set_pc(CPUState *cs, vaddr value)
{
OpenRISCCPU *cpu = OPENRISC_CPU(cs);
cpu->env.pc = value;
cpu->env.dflag = 0;
}
static void openrisc_cpu_synchronize_from_tb(CPUState *cs,
const TranslationBlock *tb)
{
OpenRISCCPU *cpu = OPENRISC_CPU(cs);
cpu->env.pc = tb->pc;
}
static bool openrisc_cpu_has_work(CPUState *cs)
{
return cs->interrupt_request & (CPU_INTERRUPT_HARD |
CPU_INTERRUPT_TIMER);
}
static void openrisc_disas_set_info(CPUState *cpu, disassemble_info *info)
{
info->print_insn = print_insn_or1k;
}
cpu: Use DeviceClass reset instead of a special CPUClass reset The CPUClass has a 'reset' method. This is a legacy from when TYPE_CPU used not to inherit from TYPE_DEVICE. We don't need it any more, as we can simply use the TYPE_DEVICE reset. The 'cpu_reset()' function is kept as the API which most places use to reset a CPU; it is now a wrapper which calls device_cold_reset() and then the tracepoint function. This change should not cause CPU objects to be reset more often than they are at the moment, because: * nobody is directly calling device_cold_reset() or qdev_reset_all() on CPU objects * no CPU object is on a qbus, so they will not be reset either by somebody calling qbus_reset_all()/bus_cold_reset(), or by the main "reset sysbus and everything in the qbus tree" reset that most devices are reset by Note that this does not change the need for each machine or whatever to use qemu_register_reset() to arrange to call cpu_reset() -- that is necessary because CPU objects are not on any qbus, so they don't get reset when the qbus tree rooted at the sysbus bus is reset, and this isn't being changed here. All the changes to the files under target/ were made using the included Coccinelle script, except: (1) the deletion of the now-inaccurate and not terribly useful "CPUClass::reset" comments was done with a perl one-liner afterwards: perl -n -i -e '/ CPUClass::reset/ or print' target/*/*.c (2) this bit of the s390 change was done by hand, because the Coccinelle script is not sophisticated enough to handle the parent_reset call being inside another function: | @@ -96,8 +96,9 @@ static void s390_cpu_reset(CPUState *s, cpu_reset_type type) | S390CPU *cpu = S390_CPU(s); | S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); | CPUS390XState *env = &cpu->env; |+ DeviceState *dev = DEVICE(s); | |- scc->parent_reset(s); |+ scc->parent_reset(dev); | cpu->env.sigp_order = 0; | s390_cpu_set_state(S390_CPU_STATE_STOPPED, cpu); Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20200303100511.5498-1-peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-03-03 11:05:11 +01:00
static void openrisc_cpu_reset(DeviceState *dev)
{
cpu: Use DeviceClass reset instead of a special CPUClass reset The CPUClass has a 'reset' method. This is a legacy from when TYPE_CPU used not to inherit from TYPE_DEVICE. We don't need it any more, as we can simply use the TYPE_DEVICE reset. The 'cpu_reset()' function is kept as the API which most places use to reset a CPU; it is now a wrapper which calls device_cold_reset() and then the tracepoint function. This change should not cause CPU objects to be reset more often than they are at the moment, because: * nobody is directly calling device_cold_reset() or qdev_reset_all() on CPU objects * no CPU object is on a qbus, so they will not be reset either by somebody calling qbus_reset_all()/bus_cold_reset(), or by the main "reset sysbus and everything in the qbus tree" reset that most devices are reset by Note that this does not change the need for each machine or whatever to use qemu_register_reset() to arrange to call cpu_reset() -- that is necessary because CPU objects are not on any qbus, so they don't get reset when the qbus tree rooted at the sysbus bus is reset, and this isn't being changed here. All the changes to the files under target/ were made using the included Coccinelle script, except: (1) the deletion of the now-inaccurate and not terribly useful "CPUClass::reset" comments was done with a perl one-liner afterwards: perl -n -i -e '/ CPUClass::reset/ or print' target/*/*.c (2) this bit of the s390 change was done by hand, because the Coccinelle script is not sophisticated enough to handle the parent_reset call being inside another function: | @@ -96,8 +96,9 @@ static void s390_cpu_reset(CPUState *s, cpu_reset_type type) | S390CPU *cpu = S390_CPU(s); | S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); | CPUS390XState *env = &cpu->env; |+ DeviceState *dev = DEVICE(s); | |- scc->parent_reset(s); |+ scc->parent_reset(dev); | cpu->env.sigp_order = 0; | s390_cpu_set_state(S390_CPU_STATE_STOPPED, cpu); Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20200303100511.5498-1-peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-03-03 11:05:11 +01:00
CPUState *s = CPU(dev);
OpenRISCCPU *cpu = OPENRISC_CPU(s);
OpenRISCCPUClass *occ = OPENRISC_CPU_GET_CLASS(cpu);
cpu: Use DeviceClass reset instead of a special CPUClass reset The CPUClass has a 'reset' method. This is a legacy from when TYPE_CPU used not to inherit from TYPE_DEVICE. We don't need it any more, as we can simply use the TYPE_DEVICE reset. The 'cpu_reset()' function is kept as the API which most places use to reset a CPU; it is now a wrapper which calls device_cold_reset() and then the tracepoint function. This change should not cause CPU objects to be reset more often than they are at the moment, because: * nobody is directly calling device_cold_reset() or qdev_reset_all() on CPU objects * no CPU object is on a qbus, so they will not be reset either by somebody calling qbus_reset_all()/bus_cold_reset(), or by the main "reset sysbus and everything in the qbus tree" reset that most devices are reset by Note that this does not change the need for each machine or whatever to use qemu_register_reset() to arrange to call cpu_reset() -- that is necessary because CPU objects are not on any qbus, so they don't get reset when the qbus tree rooted at the sysbus bus is reset, and this isn't being changed here. All the changes to the files under target/ were made using the included Coccinelle script, except: (1) the deletion of the now-inaccurate and not terribly useful "CPUClass::reset" comments was done with a perl one-liner afterwards: perl -n -i -e '/ CPUClass::reset/ or print' target/*/*.c (2) this bit of the s390 change was done by hand, because the Coccinelle script is not sophisticated enough to handle the parent_reset call being inside another function: | @@ -96,8 +96,9 @@ static void s390_cpu_reset(CPUState *s, cpu_reset_type type) | S390CPU *cpu = S390_CPU(s); | S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); | CPUS390XState *env = &cpu->env; |+ DeviceState *dev = DEVICE(s); | |- scc->parent_reset(s); |+ scc->parent_reset(dev); | cpu->env.sigp_order = 0; | s390_cpu_set_state(S390_CPU_STATE_STOPPED, cpu); Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20200303100511.5498-1-peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-03-03 11:05:11 +01:00
occ->parent_reset(dev);
memset(&cpu->env, 0, offsetof(CPUOpenRISCState, end_reset_fields));
cpu->env.pc = 0x100;
cpu->env.sr = SR_FO | SR_SM;
cpu->env.lock_addr = -1;
s->exception_index = -1;
cpu_set_fpcsr(&cpu->env, 0);
#ifndef CONFIG_USER_ONLY
cpu->env.picmr = 0x00000000;
cpu->env.picsr = 0x00000000;
cpu->env.ttmr = 0x00000000;
#endif
}
#ifndef CONFIG_USER_ONLY
static void openrisc_cpu_set_irq(void *opaque, int irq, int level)
{
OpenRISCCPU *cpu = (OpenRISCCPU *)opaque;
CPUState *cs = CPU(cpu);
uint32_t irq_bit;
if (irq > 31 || irq < 0) {
return;
}
irq_bit = 1U << irq;
if (level) {
cpu->env.picsr |= irq_bit;
} else {
cpu->env.picsr &= ~irq_bit;
}
if (cpu->env.picsr & cpu->env.picmr) {
cpu_interrupt(cs, CPU_INTERRUPT_HARD);
} else {
cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
cpu->env.picsr = 0;
}
}
#endif
static void openrisc_cpu_realizefn(DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
OpenRISCCPUClass *occ = OPENRISC_CPU_GET_CLASS(dev);
Error *local_err = NULL;
cpu_exec_realizefn(cs, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
qemu_init_vcpu(cs);
cpu_reset(cs);
occ->parent_realize(dev, errp);
}
static void openrisc_cpu_initfn(Object *obj)
{
OpenRISCCPU *cpu = OPENRISC_CPU(obj);
cpu_set_cpustate_pointers(cpu);
#ifndef CONFIG_USER_ONLY
qdev_init_gpio_in_named(DEVICE(cpu), openrisc_cpu_set_irq, "IRQ", NR_IRQS);
#endif
}
/* CPU models */
static ObjectClass *openrisc_cpu_class_by_name(const char *cpu_model)
{
ObjectClass *oc;
char *typename;
typename = g_strdup_printf(OPENRISC_CPU_TYPE_NAME("%s"), cpu_model);
oc = object_class_by_name(typename);
g_free(typename);
if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_OPENRISC_CPU) ||
object_class_is_abstract(oc))) {
return NULL;
}
return oc;
}
static void or1200_initfn(Object *obj)
{
OpenRISCCPU *cpu = OPENRISC_CPU(obj);
cpu->env.vr = 0x13000008;
cpu->env.upr = UPR_UP | UPR_DMP | UPR_IMP | UPR_PICP | UPR_TTP | UPR_PMP;
cpu->env.cpucfgr = CPUCFGR_NSGF | CPUCFGR_OB32S | CPUCFGR_OF32S |
CPUCFGR_EVBARP;
/* 1Way, TLB_SIZE entries. */
cpu->env.dmmucfgr = (DMMUCFGR_NTW & (0 << 2))
| (DMMUCFGR_NTS & (ctz32(TLB_SIZE) << 2));
cpu->env.immucfgr = (IMMUCFGR_NTW & (0 << 2))
| (IMMUCFGR_NTS & (ctz32(TLB_SIZE) << 2));
}
static void openrisc_any_initfn(Object *obj)
{
OpenRISCCPU *cpu = OPENRISC_CPU(obj);
cpu->env.vr = 0x13000040; /* Obsolete VER + UVRP for new SPRs */
cpu->env.vr2 = 0; /* No version specific id */
cpu->env.avr = 0x01030000; /* Architecture v1.3 */
cpu->env.upr = UPR_UP | UPR_DMP | UPR_IMP | UPR_PICP | UPR_TTP | UPR_PMP;
cpu->env.cpucfgr = CPUCFGR_NSGF | CPUCFGR_OB32S | CPUCFGR_OF32S |
CPUCFGR_AVRP | CPUCFGR_EVBARP | CPUCFGR_OF64A32S;
/* 1Way, TLB_SIZE entries. */
cpu->env.dmmucfgr = (DMMUCFGR_NTW & (0 << 2))
| (DMMUCFGR_NTS & (ctz32(TLB_SIZE) << 2));
cpu->env.immucfgr = (IMMUCFGR_NTW & (0 << 2))
| (IMMUCFGR_NTS & (ctz32(TLB_SIZE) << 2));
}
#ifndef CONFIG_USER_ONLY
#include "hw/core/sysemu-cpu-ops.h"
static const struct SysemuCPUOps openrisc_sysemu_ops = {
.get_phys_page_debug = openrisc_cpu_get_phys_page_debug,
};
#endif
#include "hw/core/tcg-cpu-ops.h"
static const struct TCGCPUOps openrisc_tcg_ops = {
.initialize = openrisc_translate_init,
.synchronize_from_tb = openrisc_cpu_synchronize_from_tb,
#ifndef CONFIG_USER_ONLY
.tlb_fill = openrisc_cpu_tlb_fill,
.cpu_exec_interrupt = openrisc_cpu_exec_interrupt,
.do_interrupt = openrisc_cpu_do_interrupt,
#endif /* !CONFIG_USER_ONLY */
};
static void openrisc_cpu_class_init(ObjectClass *oc, void *data)
{
OpenRISCCPUClass *occ = OPENRISC_CPU_CLASS(oc);
CPUClass *cc = CPU_CLASS(occ);
DeviceClass *dc = DEVICE_CLASS(oc);
device_class_set_parent_realize(dc, openrisc_cpu_realizefn,
&occ->parent_realize);
cpu: Use DeviceClass reset instead of a special CPUClass reset The CPUClass has a 'reset' method. This is a legacy from when TYPE_CPU used not to inherit from TYPE_DEVICE. We don't need it any more, as we can simply use the TYPE_DEVICE reset. The 'cpu_reset()' function is kept as the API which most places use to reset a CPU; it is now a wrapper which calls device_cold_reset() and then the tracepoint function. This change should not cause CPU objects to be reset more often than they are at the moment, because: * nobody is directly calling device_cold_reset() or qdev_reset_all() on CPU objects * no CPU object is on a qbus, so they will not be reset either by somebody calling qbus_reset_all()/bus_cold_reset(), or by the main "reset sysbus and everything in the qbus tree" reset that most devices are reset by Note that this does not change the need for each machine or whatever to use qemu_register_reset() to arrange to call cpu_reset() -- that is necessary because CPU objects are not on any qbus, so they don't get reset when the qbus tree rooted at the sysbus bus is reset, and this isn't being changed here. All the changes to the files under target/ were made using the included Coccinelle script, except: (1) the deletion of the now-inaccurate and not terribly useful "CPUClass::reset" comments was done with a perl one-liner afterwards: perl -n -i -e '/ CPUClass::reset/ or print' target/*/*.c (2) this bit of the s390 change was done by hand, because the Coccinelle script is not sophisticated enough to handle the parent_reset call being inside another function: | @@ -96,8 +96,9 @@ static void s390_cpu_reset(CPUState *s, cpu_reset_type type) | S390CPU *cpu = S390_CPU(s); | S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); | CPUS390XState *env = &cpu->env; |+ DeviceState *dev = DEVICE(s); | |- scc->parent_reset(s); |+ scc->parent_reset(dev); | cpu->env.sigp_order = 0; | s390_cpu_set_state(S390_CPU_STATE_STOPPED, cpu); Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20200303100511.5498-1-peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-03-03 11:05:11 +01:00
device_class_set_parent_reset(dc, openrisc_cpu_reset, &occ->parent_reset);
cc->class_by_name = openrisc_cpu_class_by_name;
cc->has_work = openrisc_cpu_has_work;
cc->dump_state = openrisc_cpu_dump_state;
cc->set_pc = openrisc_cpu_set_pc;
cc->gdb_read_register = openrisc_cpu_gdb_read_register;
cc->gdb_write_register = openrisc_cpu_gdb_write_register;
#ifndef CONFIG_USER_ONLY
dc->vmsd = &vmstate_openrisc_cpu;
cc->sysemu_ops = &openrisc_sysemu_ops;
#endif
cc->gdb_num_core_regs = 32 + 3;
cc->disas_set_info = openrisc_disas_set_info;
cc->tcg_ops = &openrisc_tcg_ops;
}
/* 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-" TYPE_OPENRISC_CPU) == 0) {
return 1;
} else if (strcmp(name_b, "any-" TYPE_OPENRISC_CPU) == 0) {
return -1;
} else {
return strcmp(name_a, name_b);
}
}
static void openrisc_cpu_list_entry(gpointer data, gpointer user_data)
{
ObjectClass *oc = data;
const char *typename;
char *name;
typename = object_class_get_name(oc);
name = g_strndup(typename,
strlen(typename) - strlen("-" TYPE_OPENRISC_CPU));
qemu_printf(" %s\n", name);
g_free(name);
}
void cpu_openrisc_list(void)
{
GSList *list;
list = object_class_get_list(TYPE_OPENRISC_CPU, false);
list = g_slist_sort(list, openrisc_cpu_list_compare);
qemu_printf("Available CPUs:\n");
g_slist_foreach(list, openrisc_cpu_list_entry, NULL);
g_slist_free(list);
}
#define DEFINE_OPENRISC_CPU_TYPE(cpu_model, initfn) \
{ \
.parent = TYPE_OPENRISC_CPU, \
.instance_init = initfn, \
.name = OPENRISC_CPU_TYPE_NAME(cpu_model), \
}
static const TypeInfo openrisc_cpus_type_infos[] = {
{ /* base class should be registered first */
.name = TYPE_OPENRISC_CPU,
.parent = TYPE_CPU,
.instance_size = sizeof(OpenRISCCPU),
.instance_init = openrisc_cpu_initfn,
.abstract = true,
.class_size = sizeof(OpenRISCCPUClass),
.class_init = openrisc_cpu_class_init,
},
DEFINE_OPENRISC_CPU_TYPE("or1200", or1200_initfn),
DEFINE_OPENRISC_CPU_TYPE("any", openrisc_any_initfn),
};
DEFINE_TYPES(openrisc_cpus_type_infos)