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Add the 64-bit free running timer. Do not model the COMPARE register (no IRQ generated). This timer is used by Linux kernel and recently U-Boot: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/clocksource/bcm2835_timer.c?h=v3.7 https://github.com/u-boot/u-boot/blob/v2019.07/include/configs/rpi.h#L19 Datasheet used: https://www.raspberrypi.org/app/uploads/2012/02/BCM2835-ARM-Peripherals.pdf Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20191019234715.25750-4-f4bug@amsat.org [PMM: squashed in switch to using memset in reset] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
34 lines
650 B
C
34 lines
650 B
C
/*
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* BCM2835 SYS timer emulation
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*
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* Copyright (c) 2019 Philippe Mathieu-Daudé <f4bug@amsat.org>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef BCM2835_SYSTIMER_H
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#define BCM2835_SYSTIMER_H
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#include "hw/sysbus.h"
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#include "hw/irq.h"
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#define TYPE_BCM2835_SYSTIMER "bcm2835-sys-timer"
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#define BCM2835_SYSTIMER(obj) \
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OBJECT_CHECK(BCM2835SystemTimerState, (obj), TYPE_BCM2835_SYSTIMER)
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typedef struct {
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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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qemu_irq irq;
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struct {
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uint32_t status;
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uint32_t compare[4];
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} reg;
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} BCM2835SystemTimerState;
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#endif
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