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