Merge remote-tracking branch 'remotes/jsnow-gitlab/tags/python-pull-request' into...
[qemu.git] / hw / ppc / mpc8544_guts.c
1 /*
2 * QEMU PowerPC MPC8544 global util pseudo-device
3 *
4 * Copyright (C) 2011 Freescale Semiconductor, Inc. All rights reserved.
5 *
6 * Author: Alexander Graf, <alex@csgraf.de>
7 *
8 * This is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * *****************************************************************
14 *
15 * The documentation for this device is noted in the MPC8544 documentation,
16 * file name "MPC8544ERM.pdf". You can easily find it on the web.
17 *
18 */
19
20 #include "qemu/osdep.h"
21 #include "qemu/module.h"
22 #include "qemu/log.h"
23 #include "sysemu/runstate.h"
24 #include "cpu.h"
25 #include "hw/sysbus.h"
26 #include "qom/object.h"
27
28 #define MPC8544_GUTS_MMIO_SIZE 0x1000
29 #define MPC8544_GUTS_RSTCR_RESET 0x02
30
31 #define MPC8544_GUTS_ADDR_PORPLLSR 0x00
32 #define MPC8544_GUTS_ADDR_PORBMSR 0x04
33 #define MPC8544_GUTS_ADDR_PORIMPSCR 0x08
34 #define MPC8544_GUTS_ADDR_PORDEVSR 0x0C
35 #define MPC8544_GUTS_ADDR_PORDBGMSR 0x10
36 #define MPC8544_GUTS_ADDR_PORDEVSR2 0x14
37 #define MPC8544_GUTS_ADDR_GPPORCR 0x20
38 #define MPC8544_GUTS_ADDR_GPIOCR 0x30
39 #define MPC8544_GUTS_ADDR_GPOUTDR 0x40
40 #define MPC8544_GUTS_ADDR_GPINDR 0x50
41 #define MPC8544_GUTS_ADDR_PMUXCR 0x60
42 #define MPC8544_GUTS_ADDR_DEVDISR 0x70
43 #define MPC8544_GUTS_ADDR_POWMGTCSR 0x80
44 #define MPC8544_GUTS_ADDR_MCPSUMR 0x90
45 #define MPC8544_GUTS_ADDR_RSTRSCR 0x94
46 #define MPC8544_GUTS_ADDR_PVR 0xA0
47 #define MPC8544_GUTS_ADDR_SVR 0xA4
48 #define MPC8544_GUTS_ADDR_RSTCR 0xB0
49 #define MPC8544_GUTS_ADDR_IOVSELSR 0xC0
50 #define MPC8544_GUTS_ADDR_DDRCSR 0xB20
51 #define MPC8544_GUTS_ADDR_DDRCDR 0xB24
52 #define MPC8544_GUTS_ADDR_DDRCLKDR 0xB28
53 #define MPC8544_GUTS_ADDR_CLKOCR 0xE00
54 #define MPC8544_GUTS_ADDR_SRDS1CR1 0xF04
55 #define MPC8544_GUTS_ADDR_SRDS2CR1 0xF10
56 #define MPC8544_GUTS_ADDR_SRDS2CR3 0xF18
57
58 #define TYPE_MPC8544_GUTS "mpc8544-guts"
59 OBJECT_DECLARE_SIMPLE_TYPE(GutsState, MPC8544_GUTS)
60
61 struct GutsState {
62 /*< private >*/
63 SysBusDevice parent_obj;
64 /*< public >*/
65
66 MemoryRegion iomem;
67 };
68
69
70 static uint64_t mpc8544_guts_read(void *opaque, hwaddr addr,
71 unsigned size)
72 {
73 uint32_t value = 0;
74 PowerPCCPU *cpu = POWERPC_CPU(current_cpu);
75 CPUPPCState *env = &cpu->env;
76
77 addr &= MPC8544_GUTS_MMIO_SIZE - 1;
78 switch (addr) {
79 case MPC8544_GUTS_ADDR_PVR:
80 value = env->spr[SPR_PVR];
81 break;
82 case MPC8544_GUTS_ADDR_SVR:
83 value = env->spr[SPR_E500_SVR];
84 break;
85 default:
86 qemu_log_mask(LOG_GUEST_ERROR,
87 "%s: Unknown register 0x%" HWADDR_PRIx "\n",
88 __func__, addr);
89 break;
90 }
91
92 return value;
93 }
94
95 static void mpc8544_guts_write(void *opaque, hwaddr addr,
96 uint64_t value, unsigned size)
97 {
98 addr &= MPC8544_GUTS_MMIO_SIZE - 1;
99
100 switch (addr) {
101 case MPC8544_GUTS_ADDR_RSTCR:
102 if (value & MPC8544_GUTS_RSTCR_RESET) {
103 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
104 }
105 break;
106 default:
107 qemu_log_mask(LOG_GUEST_ERROR, "%s: Unknown register 0x%" HWADDR_PRIx
108 " = 0x%" PRIx64 "\n", __func__, addr, value);
109 break;
110 }
111 }
112
113 static const MemoryRegionOps mpc8544_guts_ops = {
114 .read = mpc8544_guts_read,
115 .write = mpc8544_guts_write,
116 .endianness = DEVICE_BIG_ENDIAN,
117 .valid = {
118 .min_access_size = 4,
119 .max_access_size = 4,
120 },
121 };
122
123 static void mpc8544_guts_initfn(Object *obj)
124 {
125 SysBusDevice *d = SYS_BUS_DEVICE(obj);
126 GutsState *s = MPC8544_GUTS(obj);
127
128 memory_region_init_io(&s->iomem, OBJECT(s), &mpc8544_guts_ops, s,
129 "mpc8544.guts", MPC8544_GUTS_MMIO_SIZE);
130 sysbus_init_mmio(d, &s->iomem);
131 }
132
133 static const TypeInfo mpc8544_guts_info = {
134 .name = TYPE_MPC8544_GUTS,
135 .parent = TYPE_SYS_BUS_DEVICE,
136 .instance_size = sizeof(GutsState),
137 .instance_init = mpc8544_guts_initfn,
138 };
139
140 static void mpc8544_guts_register_types(void)
141 {
142 type_register_static(&mpc8544_guts_info);
143 }
144
145 type_init(mpc8544_guts_register_types)