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/*
* ARM MPS2 FPGAIO emulation
*
* Copyright (c) 2018 Linaro Limited
* Written by Peter Maydell
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 or
* (at your option) any later version.
*/
/* This is a model of the FPGAIO register block in the AN505
* FPGA image for the MPS2 dev board; it is documented in the
* application note:
* https://developer.arm.com/documentation/dai0505/latest/
*
* QEMU interface:
* + sysbus MMIO region 0: the register bank
*/
#ifndef MPS2_FPGAIO_H
#define MPS2_FPGAIO_H
#include "hw/sysbus.h"
#include "hw/misc/led.h"
#include "qom/object.h"
#define TYPE_MPS2_FPGAIO "mps2-fpgaio"
OBJECT_DECLARE_SIMPLE_TYPE(MPS2FPGAIO, MPS2_FPGAIO)
#define MPS2FPGAIO_MAX_LEDS 32
struct MPS2FPGAIO {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
MemoryRegion iomem;
LEDState *led[MPS2FPGAIO_MAX_LEDS];
uint32_t num_leds;
bool has_switches;
uint32_t led0;
uint32_t prescale;
uint32_t misc;
/* QEMU_CLOCK_VIRTUAL time at which counter and pscntr were last synced */
int64_t pscntr_sync_ticks;
/* Values of COUNTER and PSCNTR at time pscntr_sync_ticks */
uint32_t counter;
uint32_t pscntr;
uint32_t prescale_clk;
/* These hold the CLOCK_VIRTUAL ns tick when the CLK1HZ/CLK100HZ was zero */
int64_t clk1hz_tick_offset;
int64_t clk100hz_tick_offset;
};
#endif
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