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 "hw/hw.h" 21 #include "sysemu/sysemu.h" 22 #include "hw/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 #define TYPE_MPC8544_GUTS "mpc8544-guts" 55 #define MPC8544_GUTS(obj) OBJECT_CHECK(GutsState, (obj), TYPE_MPC8544_GUTS) 56 57 struct GutsState { 58 /*< private >*/ 59 SysBusDevice parent_obj; 60 /*< public >*/ 61 62 MemoryRegion iomem; 63 }; 64 65 typedef struct GutsState GutsState; 66 67 static uint64_t mpc8544_guts_read(void *opaque, hwaddr addr, 68 unsigned size) 69 { 70 uint32_t value = 0; 71 CPUPPCState *env = cpu_single_env; 72 73 addr &= MPC8544_GUTS_MMIO_SIZE - 1; 74 switch (addr) { 75 case MPC8544_GUTS_ADDR_PVR: 76 value = env->spr[SPR_PVR]; 77 break; 78 case MPC8544_GUTS_ADDR_SVR: 79 value = env->spr[SPR_E500_SVR]; 80 break; 81 default: 82 fprintf(stderr, "guts: Unknown register read: %x\n", (int)addr); 83 break; 84 } 85 86 return value; 87 } 88 89 static void mpc8544_guts_write(void *opaque, hwaddr addr, 90 uint64_t value, unsigned size) 91 { 92 addr &= MPC8544_GUTS_MMIO_SIZE - 1; 93 94 switch (addr) { 95 case MPC8544_GUTS_ADDR_RSTCR: 96 if (value & MPC8544_GUTS_RSTCR_RESET) { 97 qemu_system_reset_request(); 98 } 99 break; 100 default: 101 fprintf(stderr, "guts: Unknown register write: %x = %x\n", 102 (int)addr, (unsigned)value); 103 break; 104 } 105 } 106 107 static const MemoryRegionOps mpc8544_guts_ops = { 108 .read = mpc8544_guts_read, 109 .write = mpc8544_guts_write, 110 .endianness = DEVICE_BIG_ENDIAN, 111 .valid = { 112 .min_access_size = 4, 113 .max_access_size = 4, 114 }, 115 }; 116 117 static int mpc8544_guts_initfn(SysBusDevice *dev) 118 { 119 GutsState *s = MPC8544_GUTS(dev); 120 121 memory_region_init_io(&s->iomem, &mpc8544_guts_ops, s, 122 "mpc8544.guts", MPC8544_GUTS_MMIO_SIZE); 123 sysbus_init_mmio(dev, &s->iomem); 124 125 return 0; 126 } 127 128 static void mpc8544_guts_class_init(ObjectClass *klass, void *data) 129 { 130 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); 131 132 k->init = mpc8544_guts_initfn; 133 } 134 135 static const TypeInfo mpc8544_guts_info = { 136 .name = TYPE_MPC8544_GUTS, 137 .parent = TYPE_SYS_BUS_DEVICE, 138 .instance_size = sizeof(GutsState), 139 .class_init = mpc8544_guts_class_init, 140 }; 141 142 static void mpc8544_guts_register_types(void) 143 { 144 type_register_static(&mpc8544_guts_info); 145 } 146 147 type_init(mpc8544_guts_register_types) 148