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 | |
26 | #define MPC8544_GUTS_MMIO_SIZE 0x1000 |
27 | #define MPC8544_GUTS_RSTCR_RESET 0x02 |
28 | |
29 | #define MPC8544_GUTS_ADDR_PORPLLSR 0x00 |
30 | #define MPC8544_GUTS_ADDR_PORBMSR 0x04 |
31 | #define MPC8544_GUTS_ADDR_PORIMPSCR 0x08 |
32 | #define MPC8544_GUTS_ADDR_PORDEVSR 0x0C |
33 | #define MPC8544_GUTS_ADDR_PORDBGMSR 0x10 |
34 | #define MPC8544_GUTS_ADDR_PORDEVSR2 0x14 |
35 | #define MPC8544_GUTS_ADDR_GPPORCR 0x20 |
36 | #define MPC8544_GUTS_ADDR_GPIOCR 0x30 |
37 | #define MPC8544_GUTS_ADDR_GPOUTDR 0x40 |
38 | #define MPC8544_GUTS_ADDR_GPINDR 0x50 |
39 | #define MPC8544_GUTS_ADDR_PMUXCR 0x60 |
40 | #define MPC8544_GUTS_ADDR_DEVDISR 0x70 |
41 | #define MPC8544_GUTS_ADDR_POWMGTCSR 0x80 |
42 | #define MPC8544_GUTS_ADDR_MCPSUMR 0x90 |
43 | #define MPC8544_GUTS_ADDR_RSTRSCR 0x94 |
44 | #define MPC8544_GUTS_ADDR_PVR 0xA0 |
45 | #define MPC8544_GUTS_ADDR_SVR 0xA4 |
46 | #define MPC8544_GUTS_ADDR_RSTCR 0xB0 |
47 | #define MPC8544_GUTS_ADDR_IOVSELSR 0xC0 |
48 | #define MPC8544_GUTS_ADDR_DDRCSR 0xB20 |
49 | #define MPC8544_GUTS_ADDR_DDRCDR 0xB24 |
50 | #define MPC8544_GUTS_ADDR_DDRCLKDR 0xB28 |
51 | #define MPC8544_GUTS_ADDR_CLKOCR 0xE00 |
52 | #define MPC8544_GUTS_ADDR_SRDS1CR1 0xF04 |
53 | #define MPC8544_GUTS_ADDR_SRDS2CR1 0xF10 |
54 | #define MPC8544_GUTS_ADDR_SRDS2CR3 0xF18 |
55 | |
56 | #define TYPE_MPC8544_GUTS "mpc8544-guts" |
57 | #define MPC8544_GUTS(obj) OBJECT_CHECK(GutsState, (obj), TYPE_MPC8544_GUTS) |
58 | |
59 | struct GutsState { |
60 | /*< private >*/ |
61 | SysBusDevice parent_obj; |
62 | /*< public >*/ |
63 | |
64 | MemoryRegion iomem; |
65 | }; |
66 | |
67 | typedef struct GutsState GutsState; |
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) |
143 | |