qemu/include/hw/arm/armv7m.h
Peter Maydell d5093d9615 hw/arm/armv7m: Create input clocks
Create input clocks on the armv7m container object which pass through
to the systick timers, so that users of the armv7m object can specify
the clocks being used.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-7-peter.maydell@linaro.org
2021-09-01 11:08:19 +01:00

105 lines
3.2 KiB
C

/*
* ARMv7M CPU object
*
* Copyright (c) 2017 Linaro Ltd
* Written by Peter Maydell <peter.maydell@linaro.org>
*
* This code is licensed under the GPL version 2 or later.
*/
#ifndef HW_ARM_ARMV7M_H
#define HW_ARM_ARMV7M_H
#include "hw/sysbus.h"
#include "hw/intc/armv7m_nvic.h"
#include "hw/misc/armv7m_ras.h"
#include "target/arm/idau.h"
#include "qom/object.h"
#include "hw/clock.h"
#define TYPE_BITBAND "ARM-bitband-memory"
OBJECT_DECLARE_SIMPLE_TYPE(BitBandState, BITBAND)
struct BitBandState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
AddressSpace source_as;
MemoryRegion iomem;
uint32_t base;
MemoryRegion *source_memory;
};
#define TYPE_ARMV7M "armv7m"
OBJECT_DECLARE_SIMPLE_TYPE(ARMv7MState, ARMV7M)
#define ARMV7M_NUM_BITBANDS 2
/* ARMv7M container object.
* + Unnamed GPIO input lines: external IRQ lines for the NVIC
* + Named GPIO output SYSRESETREQ: signalled for guest AIRCR.SYSRESETREQ.
* If this GPIO is not wired up then the NVIC will default to performing
* a qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET).
* + Property "cpu-type": CPU type to instantiate
* + Property "num-irq": number of external IRQ lines
* + Property "memory": MemoryRegion defining the physical address space
* that CPU accesses see. (The NVIC, bitbanding and other CPU-internal
* devices will be automatically layered on top of this view.)
* + Property "idau": IDAU interface (forwarded to CPU object)
* + Property "init-svtor": secure VTOR reset value (forwarded to CPU object)
* + Property "init-nsvtor": non-secure VTOR reset value (forwarded to CPU object)
* + Property "vfp": enable VFP (forwarded to CPU object)
* + Property "dsp": enable DSP (forwarded to CPU object)
* + Property "enable-bitband": expose bitbanded IO
* + Clock input "refclk" is the external reference clock for the systick timers
* + Clock input "cpuclk" is the main CPU clock
*/
struct ARMv7MState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
NVICState nvic;
BitBandState bitband[ARMV7M_NUM_BITBANDS];
ARMCPU *cpu;
ARMv7MRAS ras;
SysTickState systick[M_REG_NUM_BANKS];
/* MemoryRegion we pass to the CPU, with our devices layered on
* top of the ones the board provides in board_memory.
*/
MemoryRegion container;
/*
* MemoryRegion which passes the transaction to either the S or the
* NS systick device depending on the transaction attributes
*/
MemoryRegion systickmem;
/*
* MemoryRegion which enforces the S/NS handling of the systick
* device NS alias region and passes the transaction to the
* NS systick device if appropriate.
*/
MemoryRegion systick_ns_mem;
/* Ditto, for the sysregs region provided by the NVIC */
MemoryRegion sysreg_ns_mem;
/* MR providing default PPB behaviour */
MemoryRegion defaultmem;
Clock *refclk;
Clock *cpuclk;
/* Properties */
char *cpu_type;
/* MemoryRegion the board provides to us (with its devices, RAM, etc) */
MemoryRegion *board_memory;
Object *idau;
uint32_t init_svtor;
uint32_t init_nsvtor;
bool enable_bitband;
bool start_powered_off;
bool vfp;
bool dsp;
};
#endif