140 lines
4.1 KiB
C
140 lines
4.1 KiB
C
/*
|
|
* Allwinner H3 System Control emulation
|
|
*
|
|
* Copyright (C) 2019 Niek Linnenbank <nieklinnenbank@gmail.com>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu/units.h"
|
|
#include "hw/sysbus.h"
|
|
#include "migration/vmstate.h"
|
|
#include "qemu/log.h"
|
|
#include "qemu/module.h"
|
|
#include "hw/misc/allwinner-h3-sysctrl.h"
|
|
|
|
/* System Control register offsets */
|
|
enum {
|
|
REG_VER = 0x24, /* Version */
|
|
REG_EMAC_PHY_CLK = 0x30, /* EMAC PHY Clock */
|
|
};
|
|
|
|
#define REG_INDEX(offset) (offset / sizeof(uint32_t))
|
|
|
|
/* System Control register reset values */
|
|
enum {
|
|
REG_VER_RST = 0x0,
|
|
REG_EMAC_PHY_CLK_RST = 0x58000,
|
|
};
|
|
|
|
static uint64_t allwinner_h3_sysctrl_read(void *opaque, hwaddr offset,
|
|
unsigned size)
|
|
{
|
|
const AwH3SysCtrlState *s = AW_H3_SYSCTRL(opaque);
|
|
const uint32_t idx = REG_INDEX(offset);
|
|
|
|
if (idx >= AW_H3_SYSCTRL_REGS_NUM) {
|
|
qemu_log_mask(LOG_GUEST_ERROR, "%s: out-of-bounds offset 0x%04x\n",
|
|
__func__, (uint32_t)offset);
|
|
return 0;
|
|
}
|
|
|
|
return s->regs[idx];
|
|
}
|
|
|
|
static void allwinner_h3_sysctrl_write(void *opaque, hwaddr offset,
|
|
uint64_t val, unsigned size)
|
|
{
|
|
AwH3SysCtrlState *s = AW_H3_SYSCTRL(opaque);
|
|
const uint32_t idx = REG_INDEX(offset);
|
|
|
|
if (idx >= AW_H3_SYSCTRL_REGS_NUM) {
|
|
qemu_log_mask(LOG_GUEST_ERROR, "%s: out-of-bounds offset 0x%04x\n",
|
|
__func__, (uint32_t)offset);
|
|
return;
|
|
}
|
|
|
|
switch (offset) {
|
|
case REG_VER: /* Version */
|
|
break;
|
|
default:
|
|
s->regs[idx] = (uint32_t) val;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static const MemoryRegionOps allwinner_h3_sysctrl_ops = {
|
|
.read = allwinner_h3_sysctrl_read,
|
|
.write = allwinner_h3_sysctrl_write,
|
|
.endianness = DEVICE_NATIVE_ENDIAN,
|
|
.valid = {
|
|
.min_access_size = 4,
|
|
.max_access_size = 4,
|
|
},
|
|
.impl.min_access_size = 4,
|
|
};
|
|
|
|
static void allwinner_h3_sysctrl_reset(DeviceState *dev)
|
|
{
|
|
AwH3SysCtrlState *s = AW_H3_SYSCTRL(dev);
|
|
|
|
/* Set default values for registers */
|
|
s->regs[REG_INDEX(REG_VER)] = REG_VER_RST;
|
|
s->regs[REG_INDEX(REG_EMAC_PHY_CLK)] = REG_EMAC_PHY_CLK_RST;
|
|
}
|
|
|
|
static void allwinner_h3_sysctrl_init(Object *obj)
|
|
{
|
|
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
|
|
AwH3SysCtrlState *s = AW_H3_SYSCTRL(obj);
|
|
|
|
/* Memory mapping */
|
|
memory_region_init_io(&s->iomem, OBJECT(s), &allwinner_h3_sysctrl_ops, s,
|
|
TYPE_AW_H3_SYSCTRL, 4 * KiB);
|
|
sysbus_init_mmio(sbd, &s->iomem);
|
|
}
|
|
|
|
static const VMStateDescription allwinner_h3_sysctrl_vmstate = {
|
|
.name = "allwinner-h3-sysctrl",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_UINT32_ARRAY(regs, AwH3SysCtrlState, AW_H3_SYSCTRL_REGS_NUM),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static void allwinner_h3_sysctrl_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
dc->reset = allwinner_h3_sysctrl_reset;
|
|
dc->vmsd = &allwinner_h3_sysctrl_vmstate;
|
|
}
|
|
|
|
static const TypeInfo allwinner_h3_sysctrl_info = {
|
|
.name = TYPE_AW_H3_SYSCTRL,
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
|
.instance_init = allwinner_h3_sysctrl_init,
|
|
.instance_size = sizeof(AwH3SysCtrlState),
|
|
.class_init = allwinner_h3_sysctrl_class_init,
|
|
};
|
|
|
|
static void allwinner_h3_sysctrl_register(void)
|
|
{
|
|
type_register_static(&allwinner_h3_sysctrl_info);
|
|
}
|
|
|
|
type_init(allwinner_h3_sysctrl_register)
|