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 "hw/hw.h" 22 #include "sysemu/sysemu.h" 23 #include "hw/sysbus.h" 24 25 #define MPC8544_GUTS_MMIO_SIZE 0x1000 26 #define MPC8544_GUTS_RSTCR_RESET 0x02 27 28 #define MPC8544_GUTS_ADDR_PORPLLSR 0x00 29 #define MPC8544_GUTS_ADDR_PORBMSR 0x04 30 #define MPC8544_GUTS_ADDR_PORIMPSCR 0x08 31 #define MPC8544_GUTS_ADDR_PORDEVSR 0x0C 32 #define MPC8544_GUTS_ADDR_PORDBGMSR 0x10 33 #define MPC8544_GUTS_ADDR_PORDEVSR2 0x14 34 #define MPC8544_GUTS_ADDR_GPPORCR 0x20 35 #define MPC8544_GUTS_ADDR_GPIOCR 0x30 36 #define MPC8544_GUTS_ADDR_GPOUTDR 0x40 37 #define MPC8544_GUTS_ADDR_GPINDR 0x50 38 #define MPC8544_GUTS_ADDR_PMUXCR 0x60 39 #define MPC8544_GUTS_ADDR_DEVDISR 0x70 40 #define MPC8544_GUTS_ADDR_POWMGTCSR 0x80 41 #define MPC8544_GUTS_ADDR_MCPSUMR 0x90 42 #define MPC8544_GUTS_ADDR_RSTRSCR 0x94 43 #define MPC8544_GUTS_ADDR_PVR 0xA0 44 #define MPC8544_GUTS_ADDR_SVR 0xA4 45 #define MPC8544_GUTS_ADDR_RSTCR 0xB0 46 #define MPC8544_GUTS_ADDR_IOVSELSR 0xC0 47 #define MPC8544_GUTS_ADDR_DDRCSR 0xB20 48 #define MPC8544_GUTS_ADDR_DDRCDR 0xB24 49 #define MPC8544_GUTS_ADDR_DDRCLKDR 0xB28 50 #define MPC8544_GUTS_ADDR_CLKOCR 0xE00 51 #define MPC8544_GUTS_ADDR_SRDS1CR1 0xF04 52 #define MPC8544_GUTS_ADDR_SRDS2CR1 0xF10 53 #define MPC8544_GUTS_ADDR_SRDS2CR3 0xF18 54 55 #define TYPE_MPC8544_GUTS "mpc8544-guts" 56 #define MPC8544_GUTS(obj) OBJECT_CHECK(GutsState, (obj), TYPE_MPC8544_GUTS) 57 58 struct GutsState { 59 /*< private >*/ 60 SysBusDevice parent_obj; 61 /*< public >*/ 62 63 MemoryRegion iomem; 64 }; 65 66 typedef struct GutsState GutsState; 67 68 static uint64_t mpc8544_guts_read(void *opaque, hwaddr addr, 69 unsigned size) 70 { 71 uint32_t value = 0; 72 PowerPCCPU *cpu = POWERPC_CPU(current_cpu); 73 CPUPPCState *env = &cpu->env; 74 75 addr &= MPC8544_GUTS_MMIO_SIZE - 1; 76 switch (addr) { 77 case MPC8544_GUTS_ADDR_PVR: 78 value = env->spr[SPR_PVR]; 79 break; 80 case MPC8544_GUTS_ADDR_SVR: 81 value = env->spr[SPR_E500_SVR]; 82 break; 83 default: 84 fprintf(stderr, "guts: Unknown register read: %x\n", (int)addr); 85 break; 86 } 87 88 return value; 89 } 90 91 static void mpc8544_guts_write(void *opaque, hwaddr addr, 92 uint64_t value, unsigned size) 93 { 94 addr &= MPC8544_GUTS_MMIO_SIZE - 1; 95 96 switch (addr) { 97 case MPC8544_GUTS_ADDR_RSTCR: 98 if (value & MPC8544_GUTS_RSTCR_RESET) { 99 qemu_system_reset_request(); 100 } 101 break; 102 default: 103 fprintf(stderr, "guts: Unknown register write: %x = %x\n", 104 (int)addr, (unsigned)value); 105 break; 106 } 107 } 108 109 static const MemoryRegionOps mpc8544_guts_ops = { 110 .read = mpc8544_guts_read, 111 .write = mpc8544_guts_write, 112 .endianness = DEVICE_BIG_ENDIAN, 113 .valid = { 114 .min_access_size = 4, 115 .max_access_size = 4, 116 }, 117 }; 118 119 static void mpc8544_guts_initfn(Object *obj) 120 { 121 SysBusDevice *d = SYS_BUS_DEVICE(obj); 122 GutsState *s = MPC8544_GUTS(obj); 123 124 memory_region_init_io(&s->iomem, OBJECT(s), &mpc8544_guts_ops, s, 125 "mpc8544.guts", MPC8544_GUTS_MMIO_SIZE); 126 sysbus_init_mmio(d, &s->iomem); 127 } 128 129 static const TypeInfo mpc8544_guts_info = { 130 .name = TYPE_MPC8544_GUTS, 131 .parent = TYPE_SYS_BUS_DEVICE, 132 .instance_size = sizeof(GutsState), 133 .instance_init = mpc8544_guts_initfn, 134 }; 135 136 static void mpc8544_guts_register_types(void) 137 { 138 type_register_static(&mpc8544_guts_info); 139 } 140 141 type_init(mpc8544_guts_register_types) 142