Merge remote-tracking branch 'remotes/philmd-gitlab/tags/renesas-20201027' into staging
[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 "sysemu/runstate.h"
23 #include "cpu.h"
24 #include "hw/sysbus.h"
25 #include "qom/object.h"
26
27 #define MPC8544_GUTS_MMIO_SIZE 0x1000
28 #define MPC8544_GUTS_RSTCR_RESET 0x02
29
30 #define MPC8544_GUTS_ADDR_PORPLLSR 0x00
31 #define MPC8544_GUTS_ADDR_PORBMSR 0x04
32 #define MPC8544_GUTS_ADDR_PORIMPSCR 0x08
33 #define MPC8544_GUTS_ADDR_PORDEVSR 0x0C
34 #define MPC8544_GUTS_ADDR_PORDBGMSR 0x10
35 #define MPC8544_GUTS_ADDR_PORDEVSR2 0x14
36 #define MPC8544_GUTS_ADDR_GPPORCR 0x20
37 #define MPC8544_GUTS_ADDR_GPIOCR 0x30
38 #define MPC8544_GUTS_ADDR_GPOUTDR 0x40
39 #define MPC8544_GUTS_ADDR_GPINDR 0x50
40 #define MPC8544_GUTS_ADDR_PMUXCR 0x60
41 #define MPC8544_GUTS_ADDR_DEVDISR 0x70
42 #define MPC8544_GUTS_ADDR_POWMGTCSR 0x80
43 #define MPC8544_GUTS_ADDR_MCPSUMR 0x90
44 #define MPC8544_GUTS_ADDR_RSTRSCR 0x94
45 #define MPC8544_GUTS_ADDR_PVR 0xA0
46 #define MPC8544_GUTS_ADDR_SVR 0xA4
47 #define MPC8544_GUTS_ADDR_RSTCR 0xB0
48 #define MPC8544_GUTS_ADDR_IOVSELSR 0xC0
49 #define MPC8544_GUTS_ADDR_DDRCSR 0xB20
50 #define MPC8544_GUTS_ADDR_DDRCDR 0xB24
51 #define MPC8544_GUTS_ADDR_DDRCLKDR 0xB28
52 #define MPC8544_GUTS_ADDR_CLKOCR 0xE00
53 #define MPC8544_GUTS_ADDR_SRDS1CR1 0xF04
54 #define MPC8544_GUTS_ADDR_SRDS2CR1 0xF10
55 #define MPC8544_GUTS_ADDR_SRDS2CR3 0xF18
56
57 #define TYPE_MPC8544_GUTS "mpc8544-guts"
58 OBJECT_DECLARE_SIMPLE_TYPE(GutsState, MPC8544_GUTS)
59
60 struct GutsState {
61 /*< private >*/
62 SysBusDevice parent_obj;
63 /*< public >*/
64
65 MemoryRegion iomem;
66 };
67
68
69 static uint64_t mpc8544_guts_read(void *opaque, hwaddr addr,
70 unsigned size)
71 {
72 uint32_t value = 0;
73 PowerPCCPU *cpu = POWERPC_CPU(current_cpu);
74 CPUPPCState *env = &cpu->env;
75
76 addr &= MPC8544_GUTS_MMIO_SIZE - 1;
77 switch (addr) {
78 case MPC8544_GUTS_ADDR_PVR:
79 value = env->spr[SPR_PVR];
80 break;
81 case MPC8544_GUTS_ADDR_SVR:
82 value = env->spr[SPR_E500_SVR];
83 break;
84 default:
85 fprintf(stderr, "guts: Unknown register read: %x\n", (int)addr);
86 break;
87 }
88
89 return value;
90 }
91
92 static void mpc8544_guts_write(void *opaque, hwaddr addr,
93 uint64_t value, unsigned size)
94 {
95 addr &= MPC8544_GUTS_MMIO_SIZE - 1;
96
97 switch (addr) {
98 case MPC8544_GUTS_ADDR_RSTCR:
99 if (value & MPC8544_GUTS_RSTCR_RESET) {
100 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
101 }
102 break;
103 default:
104 fprintf(stderr, "guts: Unknown register write: %x = %x\n",
105 (int)addr, (unsigned)value);
106 break;
107 }
108 }
109
110 static const MemoryRegionOps mpc8544_guts_ops = {
111 .read = mpc8544_guts_read,
112 .write = mpc8544_guts_write,
113 .endianness = DEVICE_BIG_ENDIAN,
114 .valid = {
115 .min_access_size = 4,
116 .max_access_size = 4,
117 },
118 };
119
120 static void mpc8544_guts_initfn(Object *obj)
121 {
122 SysBusDevice *d = SYS_BUS_DEVICE(obj);
123 GutsState *s = MPC8544_GUTS(obj);
124
125 memory_region_init_io(&s->iomem, OBJECT(s), &mpc8544_guts_ops, s,
126 "mpc8544.guts", MPC8544_GUTS_MMIO_SIZE);
127 sysbus_init_mmio(d, &s->iomem);
128 }
129
130 static const TypeInfo mpc8544_guts_info = {
131 .name = TYPE_MPC8544_GUTS,
132 .parent = TYPE_SYS_BUS_DEVICE,
133 .instance_size = sizeof(GutsState),
134 .instance_init = mpc8544_guts_initfn,
135 };
136
137 static void mpc8544_guts_register_types(void)
138 {
139 type_register_static(&mpc8544_guts_info);
140 }
141
142 type_init(mpc8544_guts_register_types)