qemu/include/hw/timer/armv7m_systick.h
Peter Maydell 683754c7b6 arm: Remove system_clock_scale global
All the devices that used to use system_clock_scale have now been
converted to use Clock inputs instead, so the global is no longer
needed; remove it and all the code that sets it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210812093356.1946-26-peter.maydell@linaro.org
2021-09-01 11:08:21 +01:00

51 lines
1.1 KiB
C

/*
* ARMv7M SysTick timer
*
* Copyright (c) 2006-2007 CodeSourcery.
* Written by Paul Brook
* Copyright (c) 2017 Linaro Ltd
* Written by Peter Maydell
*
* This code is licensed under the GPL (version 2 or later).
*/
#ifndef HW_TIMER_ARMV7M_SYSTICK_H
#define HW_TIMER_ARMV7M_SYSTICK_H
#include "hw/sysbus.h"
#include "qom/object.h"
#include "hw/ptimer.h"
#include "hw/clock.h"
#define TYPE_SYSTICK "armv7m_systick"
OBJECT_DECLARE_SIMPLE_TYPE(SysTickState, SYSTICK)
/*
* QEMU interface:
* + sysbus MMIO region 0 is the register interface (covering
* the registers which are mapped at address 0xE000E010)
* + sysbus IRQ 0 is the interrupt line to the NVIC
* + Clock input "refclk" is the external reference clock
* (used when SYST_CSR.CLKSOURCE == 0)
* + Clock input "cpuclk" is the main CPU clock
* (used when SYST_CSR.CLKSOURCE == 1)
*/
struct SysTickState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
uint32_t control;
uint32_t reload;
int64_t tick;
ptimer_state *ptimer;
MemoryRegion iomem;
qemu_irq irq;
Clock *refclk;
Clock *cpuclk;
};
#endif