2 * Power Management device simulation in PKUnity SoC
4 * Copyright (C) 2010-2012 Guan Xuetao
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation, or any later version.
9 * See the COPYING file in the top-level directory.
12 #include "qemu/osdep.h"
13 #include "hw/sysbus.h"
14 #include "qom/object.h"
17 #include "hw/unicore32/puv3.h"
18 #include "qemu/module.h"
21 #define TYPE_PUV3_PM "puv3_pm"
22 OBJECT_DECLARE_SIMPLE_TYPE(PUV3PMState, PUV3_PM)
25 SysBusDevice parent_obj;
31 uint32_t reg_PLL_SYS_CFG;
32 uint32_t reg_PLL_DDR_CFG;
33 uint32_t reg_PLL_VGA_CFG;
37 static uint64_t puv3_pm_read(void *opaque, hwaddr offset,
40 PUV3PMState *s = opaque;
48 ret = s->reg_PLL_SYS_CFG;
51 ret = s->reg_PLL_DDR_CFG;
54 ret = s->reg_PLL_VGA_CFG;
59 case 0x28: /* PLL SYS STATUS */
62 case 0x2c: /* PLL DDR STATUS */
65 case 0x30: /* PLL VGA STATUS */
68 case 0x34: /* DIV STATUS */
71 case 0x38: /* SW RESET */
74 case 0x44: /* PLL DFC DONE */
78 qemu_log_mask(LOG_GUEST_ERROR,
79 "%s: Bad read offset 0x%"HWADDR_PRIx"\n",
82 DPRINTF("offset 0x%x, value 0x%x\n", offset, ret);
87 static void puv3_pm_write(void *opaque, hwaddr offset,
88 uint64_t value, unsigned size)
90 PUV3PMState *s = opaque;
100 s->reg_PLL_SYS_CFG = value;
103 s->reg_PLL_DDR_CFG = value;
106 s->reg_PLL_VGA_CFG = value;
112 qemu_log_mask(LOG_GUEST_ERROR,
113 "%s: Bad write offset 0x%"HWADDR_PRIx"\n",
116 DPRINTF("offset 0x%x, value 0x%x\n", offset, value);
119 static const MemoryRegionOps puv3_pm_ops = {
120 .read = puv3_pm_read,
121 .write = puv3_pm_write,
123 .min_access_size = 4,
124 .max_access_size = 4,
126 .endianness = DEVICE_NATIVE_ENDIAN,
129 static void puv3_pm_realize(DeviceState *dev, Error **errp)
131 PUV3PMState *s = PUV3_PM(dev);
135 memory_region_init_io(&s->iomem, OBJECT(s), &puv3_pm_ops, s, "puv3_pm",
137 sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->iomem);
140 static void puv3_pm_class_init(ObjectClass *klass, void *data)
142 DeviceClass *dc = DEVICE_CLASS(klass);
144 dc->realize = puv3_pm_realize;
147 static const TypeInfo puv3_pm_info = {
148 .name = TYPE_PUV3_PM,
149 .parent = TYPE_SYS_BUS_DEVICE,
150 .instance_size = sizeof(PUV3PMState),
151 .class_init = puv3_pm_class_init,
154 static void puv3_pm_register_type(void)
156 type_register_static(&puv3_pm_info);
159 type_init(puv3_pm_register_type)