//------------------------------------------------------------------------------
//
// RISC-V CPU functions.
//
// Copyright (c) 2016 - 2021, Hewlett Packard Enterprise Development LP. All rights reserved.
//
// SPDX-License-Identifier: BSD-2-Clause-Patent
//
//------------------------------------------------------------------------------
#include
#include
.data
.text
.align 3
//
// Set machine mode scratch.
// @param a0 : Pointer to RISCV_MACHINE_MODE_CONTEXT.
//
ASM_FUNC (RiscVSetMachineScratch)
csrrw a1, RISCV_CSR_MACHINE_MSCRATCH, a0
ret
//
// Get machine mode scratch.
// @retval a0 : Pointer to RISCV_MACHINE_MODE_CONTEXT.
//
ASM_FUNC (RiscVGetMachineScratch)
csrrs a0, RISCV_CSR_MACHINE_MSCRATCH, 0
ret
//
// Get machine trap cause CSR.
//
ASM_FUNC (RiscVGetMachineTrapCause)
csrrs a0, RISCV_CSR_MACHINE_MCAUSE, 0
ret
//
// Get machine interrupt enable
//
ASM_FUNC (RiscVReadMachineInterruptEnable)
csrr a0, RISCV_CSR_MACHINE_MIE
ret
//
// Get machine interrupt pending
//
ASM_FUNC (RiscVReadMachineInterruptPending)
csrr a0, RISCV_CSR_MACHINE_MIP
ret
//
// Get machine status
//
ASM_FUNC (RiscVReadMachineStatus)
csrr a0, RISCV_CSR_MACHINE_MSTATUS
ret
//
// Set machine status
//
ASM_FUNC (RiscVWriteMachineStatus)
csrw RISCV_CSR_MACHINE_MSTATUS, a0
ret
//
// Get machine trap vector
//
ASM_FUNC (RiscVReadMachineTrapVector)
csrr a0, RISCV_CSR_MACHINE_MTVEC
ret
//
// Read machine ISA
//
ASM_FUNC (RiscVReadMachineIsa)
csrr a0, RISCV_CSR_MACHINE_MISA
ret
//
// Read machine vendor ID
//
ASM_FUNC (RiscVReadMachineVendorId)
csrr a0, RISCV_CSR_MACHINE_MVENDORID
ret
//
// Read machine architecture ID
//
ASM_FUNC (RiscVReadMachineArchitectureId)
csrr a0, RISCV_CSR_MACHINE_MARCHID
ret
//
// Read machine implementation ID
//
ASM_FUNC (RiscVReadMachineImplementId)
csrr a0, RISCV_CSR_MACHINE_MIMPID
ret
//
// Set Supervisor mode scratch.
// @param a0 : Value set to Supervisor mode scratch
//
ASM_FUNC (RiscVSetSupervisorScratch)
csrrw a1, RISCV_CSR_SUPERVISOR_SSCRATCH, a0
ret
//
// Get Supervisor mode scratch.
// @retval a0 : Value in Supervisor mode scratch
//
ASM_FUNC (RiscVGetSupervisorScratch)
csrr a0, RISCV_CSR_SUPERVISOR_SSCRATCH
ret
//
// Set Supervisor mode trap vector.
// @param a0 : Value set to Supervisor mode trap vector
//
ASM_FUNC (RiscVSetSupervisorStvec)
csrrw a1, RISCV_CSR_SUPERVISOR_STVEC, a0
ret
//
// Get Supervisor mode scratch.
// @retval a0 : Value in Supervisor mode trap vector
//
ASM_FUNC (RiscVGetSupervisorStvec)
csrr a0, RISCV_CSR_SUPERVISOR_STVEC
ret