//------------------------------------------------------------------------------
|
//
|
// SiFive U5 Series Timer CSR functions.
|
//
|
// Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
|
//
|
// SPDX-License-Identifier: BSD-2-Clause-Patent
|
//
|
//------------------------------------------------------------------------------
|
#include <Base.h>
|
#include <RiscVImpl.h>
|
#include <U5Clint.h>
|
|
.data
|
|
.text
|
.align 3
|
|
.global ASM_PFX(RiscVReadMachineTimer)
|
.global ASM_PFX(RiscVSetMachineTimerCmp)
|
.global ASM_PFX(RiscVReadMachineTimerCmp)
|
|
//
|
// Read machine timer CSR.
|
// @retval a0 : 64-bit machine timer.
|
//
|
ASM_PFX (RiscVReadMachineTimer):
|
li t1, CLINT_REG_MTIME
|
ld a0, (t1)
|
ret
|
|
//
|
// Set machine timer compare CSR.
|
// @param a0 : UINT64
|
//
|
ASM_PFX (RiscVSetMachineTimerCmp):
|
li t1, CLINT_REG_MTIMECMP0
|
sd a0, (t1)
|
ret
|
|
//
|
// Read machine timer compare CSR.
|
// @param a0 : UINT64
|
//
|
ASM_PFX (RiscVReadMachineTimerCmp):
|
li t1, CLINT_REG_MTIMECMP0
|
ld a0, (t1)
|
ret
|
