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1.1 root 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, <[email protected]>
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 "hw.h"
21: #include "sysemu.h"
22: #include "sysbus.h"
23:
24: #define MPC8544_GUTS_MMIO_SIZE 0x1000
25: #define MPC8544_GUTS_RSTCR_RESET 0x02
26:
27: #define MPC8544_GUTS_ADDR_PORPLLSR 0x00
28: #define MPC8544_GUTS_ADDR_PORBMSR 0x04
29: #define MPC8544_GUTS_ADDR_PORIMPSCR 0x08
30: #define MPC8544_GUTS_ADDR_PORDEVSR 0x0C
31: #define MPC8544_GUTS_ADDR_PORDBGMSR 0x10
32: #define MPC8544_GUTS_ADDR_PORDEVSR2 0x14
33: #define MPC8544_GUTS_ADDR_GPPORCR 0x20
34: #define MPC8544_GUTS_ADDR_GPIOCR 0x30
35: #define MPC8544_GUTS_ADDR_GPOUTDR 0x40
36: #define MPC8544_GUTS_ADDR_GPINDR 0x50
37: #define MPC8544_GUTS_ADDR_PMUXCR 0x60
38: #define MPC8544_GUTS_ADDR_DEVDISR 0x70
39: #define MPC8544_GUTS_ADDR_POWMGTCSR 0x80
40: #define MPC8544_GUTS_ADDR_MCPSUMR 0x90
41: #define MPC8544_GUTS_ADDR_RSTRSCR 0x94
42: #define MPC8544_GUTS_ADDR_PVR 0xA0
43: #define MPC8544_GUTS_ADDR_SVR 0xA4
44: #define MPC8544_GUTS_ADDR_RSTCR 0xB0
45: #define MPC8544_GUTS_ADDR_IOVSELSR 0xC0
46: #define MPC8544_GUTS_ADDR_DDRCSR 0xB20
47: #define MPC8544_GUTS_ADDR_DDRCDR 0xB24
48: #define MPC8544_GUTS_ADDR_DDRCLKDR 0xB28
49: #define MPC8544_GUTS_ADDR_CLKOCR 0xE00
50: #define MPC8544_GUTS_ADDR_SRDS1CR1 0xF04
51: #define MPC8544_GUTS_ADDR_SRDS2CR1 0xF10
52: #define MPC8544_GUTS_ADDR_SRDS2CR3 0xF18
53:
54: struct GutsState {
55: SysBusDevice busdev;
1.1.1.2 ! root 56: MemoryRegion iomem;
1.1 root 57: };
58:
59: typedef struct GutsState GutsState;
60:
1.1.1.2 ! root 61: static uint64_t mpc8544_guts_read(void *opaque, target_phys_addr_t addr,
! 62: unsigned size)
1.1 root 63: {
64: uint32_t value = 0;
1.1.1.2 ! root 65: CPUPPCState *env = cpu_single_env;
1.1 root 66:
67: addr &= MPC8544_GUTS_MMIO_SIZE - 1;
68: switch (addr) {
69: case MPC8544_GUTS_ADDR_PVR:
70: value = env->spr[SPR_PVR];
71: break;
72: case MPC8544_GUTS_ADDR_SVR:
73: value = env->spr[SPR_E500_SVR];
74: break;
75: default:
76: fprintf(stderr, "guts: Unknown register read: %x\n", (int)addr);
77: break;
78: }
79:
80: return value;
81: }
82:
1.1.1.2 ! root 83: static void mpc8544_guts_write(void *opaque, target_phys_addr_t addr,
! 84: uint64_t value, unsigned size)
1.1 root 85: {
86: addr &= MPC8544_GUTS_MMIO_SIZE - 1;
87:
88: switch (addr) {
89: case MPC8544_GUTS_ADDR_RSTCR:
90: if (value & MPC8544_GUTS_RSTCR_RESET) {
91: qemu_system_reset_request();
92: }
93: break;
94: default:
95: fprintf(stderr, "guts: Unknown register write: %x = %x\n",
1.1.1.2 ! root 96: (int)addr, (unsigned)value);
1.1 root 97: break;
98: }
99: }
100:
1.1.1.2 ! root 101: static const MemoryRegionOps mpc8544_guts_ops = {
! 102: .read = mpc8544_guts_read,
! 103: .write = mpc8544_guts_write,
! 104: .endianness = DEVICE_BIG_ENDIAN,
! 105: .valid = {
! 106: .min_access_size = 4,
! 107: .max_access_size = 4,
! 108: },
1.1 root 109: };
110:
111: static int mpc8544_guts_initfn(SysBusDevice *dev)
112: {
113: GutsState *s;
114:
115: s = FROM_SYSBUS(GutsState, sysbus_from_qdev(dev));
116:
1.1.1.2 ! root 117: memory_region_init_io(&s->iomem, &mpc8544_guts_ops, s,
! 118: "mpc6544.guts", MPC8544_GUTS_MMIO_SIZE);
! 119: sysbus_init_mmio(dev, &s->iomem);
1.1 root 120:
121: return 0;
122: }
123:
1.1.1.2 ! root 124: static void mpc8544_guts_class_init(ObjectClass *klass, void *data)
! 125: {
! 126: SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
! 127:
! 128: k->init = mpc8544_guts_initfn;
! 129: }
! 130:
! 131: static TypeInfo mpc8544_guts_info = {
! 132: .name = "mpc8544-guts",
! 133: .parent = TYPE_SYS_BUS_DEVICE,
! 134: .instance_size = sizeof(GutsState),
! 135: .class_init = mpc8544_guts_class_init,
1.1 root 136: };
137:
1.1.1.2 ! root 138: static void mpc8544_guts_register_types(void)
1.1 root 139: {
1.1.1.2 ! root 140: type_register_static(&mpc8544_guts_info);
1.1 root 141: }
1.1.1.2 ! root 142:
! 143: type_init(mpc8544_guts_register_types)
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