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 "qemu/log.h" 23 #include "sysemu/runstate.h" 24 #include "cpu.h" 25 #include "hw/sysbus.h" 26 #include "qom/object.h" 27 28 #define MPC8544_GUTS_MMIO_SIZE 0x1000 29 #define MPC8544_GUTS_RSTCR_RESET 0x02 30 31 #define MPC8544_GUTS_ADDR_PORPLLSR 0x00 32 #define MPC8544_GUTS_ADDR_PORBMSR 0x04 33 #define MPC8544_GUTS_ADDR_PORIMPSCR 0x08 34 #define MPC8544_GUTS_ADDR_PORDEVSR 0x0C 35 #define MPC8544_GUTS_ADDR_PORDBGMSR 0x10 36 #define MPC8544_GUTS_ADDR_PORDEVSR2 0x14 37 #define MPC8544_GUTS_ADDR_GPPORCR 0x20 38 #define MPC8544_GUTS_ADDR_GPIOCR 0x30 39 #define MPC8544_GUTS_ADDR_GPOUTDR 0x40 40 #define MPC8544_GUTS_ADDR_GPINDR 0x50 41 #define MPC8544_GUTS_ADDR_PMUXCR 0x60 42 #define MPC8544_GUTS_ADDR_DEVDISR 0x70 43 #define MPC8544_GUTS_ADDR_POWMGTCSR 0x80 44 #define MPC8544_GUTS_ADDR_MCPSUMR 0x90 45 #define MPC8544_GUTS_ADDR_RSTRSCR 0x94 46 #define MPC8544_GUTS_ADDR_PVR 0xA0 47 #define MPC8544_GUTS_ADDR_SVR 0xA4 48 #define MPC8544_GUTS_ADDR_RSTCR 0xB0 49 #define MPC8544_GUTS_ADDR_IOVSELSR 0xC0 50 #define MPC8544_GUTS_ADDR_DDRCSR 0xB20 51 #define MPC8544_GUTS_ADDR_DDRCDR 0xB24 52 #define MPC8544_GUTS_ADDR_DDRCLKDR 0xB28 53 #define MPC8544_GUTS_ADDR_CLKOCR 0xE00 54 #define MPC8544_GUTS_ADDR_SRDS1CR1 0xF04 55 #define MPC8544_GUTS_ADDR_SRDS2CR1 0xF10 56 #define MPC8544_GUTS_ADDR_SRDS2CR3 0xF18 57 58 #define TYPE_MPC8544_GUTS "mpc8544-guts" 59 OBJECT_DECLARE_SIMPLE_TYPE(GutsState, MPC8544_GUTS) 60 61 struct GutsState { 62 /*< private >*/ 63 SysBusDevice parent_obj; 64 /*< public >*/ 65 66 MemoryRegion iomem; 67 }; 68 69 70 static uint64_t mpc8544_guts_read(void *opaque, hwaddr addr, 71 unsigned size) 72 { 73 uint32_t value = 0; 74 PowerPCCPU *cpu = POWERPC_CPU(current_cpu); 75 CPUPPCState *env = &cpu->env; 76 77 addr &= MPC8544_GUTS_MMIO_SIZE - 1; 78 switch (addr) { 79 case MPC8544_GUTS_ADDR_PVR: 80 value = env->spr[SPR_PVR]; 81 break; 82 case MPC8544_GUTS_ADDR_SVR: 83 value = env->spr[SPR_E500_SVR]; 84 break; 85 default: 86 qemu_log_mask(LOG_GUEST_ERROR, 87 "%s: Unknown register 0x%" HWADDR_PRIx "\n", 88 __func__, addr); 89 break; 90 } 91 92 return value; 93 } 94 95 static void mpc8544_guts_write(void *opaque, hwaddr addr, 96 uint64_t value, unsigned size) 97 { 98 addr &= MPC8544_GUTS_MMIO_SIZE - 1; 99 100 switch (addr) { 101 case MPC8544_GUTS_ADDR_RSTCR: 102 if (value & MPC8544_GUTS_RSTCR_RESET) { 103 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 104 } 105 break; 106 default: 107 qemu_log_mask(LOG_GUEST_ERROR, "%s: Unknown register 0x%" HWADDR_PRIx 108 " = 0x%" PRIx64 "\n", __func__, addr, value); 109 break; 110 } 111 } 112 113 static const MemoryRegionOps mpc8544_guts_ops = { 114 .read = mpc8544_guts_read, 115 .write = mpc8544_guts_write, 116 .endianness = DEVICE_BIG_ENDIAN, 117 .valid = { 118 .min_access_size = 4, 119 .max_access_size = 4, 120 }, 121 }; 122 123 static void mpc8544_guts_initfn(Object *obj) 124 { 125 SysBusDevice *d = SYS_BUS_DEVICE(obj); 126 GutsState *s = MPC8544_GUTS(obj); 127 128 memory_region_init_io(&s->iomem, OBJECT(s), &mpc8544_guts_ops, s, 129 "mpc8544.guts", MPC8544_GUTS_MMIO_SIZE); 130 sysbus_init_mmio(d, &s->iomem); 131 } 132 133 static const TypeInfo mpc8544_guts_info = { 134 .name = TYPE_MPC8544_GUTS, 135 .parent = TYPE_SYS_BUS_DEVICE, 136 .instance_size = sizeof(GutsState), 137 .instance_init = mpc8544_guts_initfn, 138 }; 139 140 static void mpc8544_guts_register_types(void) 141 { 142 type_register_static(&mpc8544_guts_info); 143 } 144 145 type_init(mpc8544_guts_register_types) 146