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141 lines
4.1 KiB
C
141 lines
4.1 KiB
C
/*
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* QEMU PowerPC MPC8544 global util pseudo-device
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*
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* Copyright (C) 2011 Freescale Semiconductor, Inc. All rights reserved.
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*
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* Author: Alexander Graf, <alex@csgraf.de>
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* *****************************************************************
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*
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* The documentation for this device is noted in the MPC8544 documentation,
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* file name "MPC8544ERM.pdf". You can easily find it on the web.
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*
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*/
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#include "hw/hw.h"
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#include "sysemu/sysemu.h"
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#include "hw/sysbus.h"
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#define MPC8544_GUTS_MMIO_SIZE 0x1000
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#define MPC8544_GUTS_RSTCR_RESET 0x02
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#define MPC8544_GUTS_ADDR_PORPLLSR 0x00
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#define MPC8544_GUTS_ADDR_PORBMSR 0x04
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#define MPC8544_GUTS_ADDR_PORIMPSCR 0x08
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#define MPC8544_GUTS_ADDR_PORDEVSR 0x0C
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#define MPC8544_GUTS_ADDR_PORDBGMSR 0x10
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#define MPC8544_GUTS_ADDR_PORDEVSR2 0x14
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#define MPC8544_GUTS_ADDR_GPPORCR 0x20
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#define MPC8544_GUTS_ADDR_GPIOCR 0x30
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#define MPC8544_GUTS_ADDR_GPOUTDR 0x40
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#define MPC8544_GUTS_ADDR_GPINDR 0x50
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#define MPC8544_GUTS_ADDR_PMUXCR 0x60
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#define MPC8544_GUTS_ADDR_DEVDISR 0x70
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#define MPC8544_GUTS_ADDR_POWMGTCSR 0x80
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#define MPC8544_GUTS_ADDR_MCPSUMR 0x90
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#define MPC8544_GUTS_ADDR_RSTRSCR 0x94
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#define MPC8544_GUTS_ADDR_PVR 0xA0
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#define MPC8544_GUTS_ADDR_SVR 0xA4
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#define MPC8544_GUTS_ADDR_RSTCR 0xB0
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#define MPC8544_GUTS_ADDR_IOVSELSR 0xC0
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#define MPC8544_GUTS_ADDR_DDRCSR 0xB20
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#define MPC8544_GUTS_ADDR_DDRCDR 0xB24
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#define MPC8544_GUTS_ADDR_DDRCLKDR 0xB28
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#define MPC8544_GUTS_ADDR_CLKOCR 0xE00
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#define MPC8544_GUTS_ADDR_SRDS1CR1 0xF04
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#define MPC8544_GUTS_ADDR_SRDS2CR1 0xF10
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#define MPC8544_GUTS_ADDR_SRDS2CR3 0xF18
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#define TYPE_MPC8544_GUTS "mpc8544-guts"
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#define MPC8544_GUTS(obj) OBJECT_CHECK(GutsState, (obj), TYPE_MPC8544_GUTS)
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struct GutsState {
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/*< private >*/
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SysBusDevice parent_obj;
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/*< public >*/
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MemoryRegion iomem;
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};
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typedef struct GutsState GutsState;
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static uint64_t mpc8544_guts_read(void *opaque, hwaddr addr,
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unsigned size)
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{
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uint32_t value = 0;
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PowerPCCPU *cpu = POWERPC_CPU(current_cpu);
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CPUPPCState *env = &cpu->env;
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addr &= MPC8544_GUTS_MMIO_SIZE - 1;
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switch (addr) {
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case MPC8544_GUTS_ADDR_PVR:
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value = env->spr[SPR_PVR];
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break;
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case MPC8544_GUTS_ADDR_SVR:
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value = env->spr[SPR_E500_SVR];
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break;
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default:
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fprintf(stderr, "guts: Unknown register read: %x\n", (int)addr);
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break;
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}
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return value;
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}
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static void mpc8544_guts_write(void *opaque, hwaddr addr,
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uint64_t value, unsigned size)
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{
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addr &= MPC8544_GUTS_MMIO_SIZE - 1;
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switch (addr) {
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case MPC8544_GUTS_ADDR_RSTCR:
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if (value & MPC8544_GUTS_RSTCR_RESET) {
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qemu_system_reset_request();
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}
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break;
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default:
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fprintf(stderr, "guts: Unknown register write: %x = %x\n",
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(int)addr, (unsigned)value);
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break;
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}
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}
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static const MemoryRegionOps mpc8544_guts_ops = {
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.read = mpc8544_guts_read,
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.write = mpc8544_guts_write,
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.endianness = DEVICE_BIG_ENDIAN,
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.valid = {
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.min_access_size = 4,
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.max_access_size = 4,
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},
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};
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static void mpc8544_guts_initfn(Object *obj)
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{
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SysBusDevice *d = SYS_BUS_DEVICE(obj);
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GutsState *s = MPC8544_GUTS(obj);
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memory_region_init_io(&s->iomem, OBJECT(s), &mpc8544_guts_ops, s,
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"mpc8544.guts", MPC8544_GUTS_MMIO_SIZE);
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sysbus_init_mmio(d, &s->iomem);
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}
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static const TypeInfo mpc8544_guts_info = {
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.name = TYPE_MPC8544_GUTS,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(GutsState),
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.instance_init = mpc8544_guts_initfn,
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};
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static void mpc8544_guts_register_types(void)
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{
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type_register_static(&mpc8544_guts_info);
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}
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type_init(mpc8544_guts_register_types)
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