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