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9f99072fc0
If i/o does not cover the entire first page, allocate a portion of ram as an i/o device, so that the entire first page is i/o. While memory_region_init_ram_device_ptr is happy to allocate the RAMBlock, it does not register the ram for migration. Do this by hand. Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/*
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* QEMU ATmega MCU
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*
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* Copyright (c) 2019-2020 Philippe Mathieu-Daudé
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*
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* This work is licensed under the terms of the GNU GPLv2 or later.
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* See the COPYING file in the top-level directory.
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef HW_AVR_ATMEGA_H
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#define HW_AVR_ATMEGA_H
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#include "hw/char/avr_usart.h"
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#include "hw/timer/avr_timer16.h"
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#include "hw/misc/avr_power.h"
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#include "target/avr/cpu.h"
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#include "qom/object.h"
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#define TYPE_ATMEGA_MCU "ATmega"
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#define TYPE_ATMEGA168_MCU "ATmega168"
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#define TYPE_ATMEGA328_MCU "ATmega328"
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#define TYPE_ATMEGA1280_MCU "ATmega1280"
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#define TYPE_ATMEGA2560_MCU "ATmega2560"
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typedef struct AtmegaMcuState AtmegaMcuState;
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DECLARE_INSTANCE_CHECKER(AtmegaMcuState, ATMEGA_MCU,
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TYPE_ATMEGA_MCU)
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#define POWER_MAX 2
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#define USART_MAX 4
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#define TIMER_MAX 6
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#define GPIO_MAX 12
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struct AtmegaMcuState {
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/*< private >*/
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SysBusDevice parent_obj;
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/*< public >*/
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AVRCPU cpu;
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MemoryRegion flash;
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MemoryRegion eeprom;
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MemoryRegion sram;
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MemoryRegion sram_io;
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DeviceState *io;
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AVRMaskState pwr[POWER_MAX];
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AVRUsartState usart[USART_MAX];
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AVRTimer16State timer[TIMER_MAX];
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uint64_t xtal_freq_hz;
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};
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#endif /* HW_AVR_ATMEGA_H */
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