mirror of
https://github.com/acidanthera/audk.git
synced 2025-08-16 15:18:10 +02:00
bc0b418cba
Add IoCsrRead8, IoCsrRead16, IoCsrRead32, IoCsrRead64, IoCsrWrite8, IoCsrWrite16, IoCsrWrite32, IoCsrWrite64 to operate the IOCSR registers of LoongArch architecture. BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584 Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Zhiguang Liu <zhiguang.liu@intel.com> Signed-off-by: Chao Li <lichao@loongson.cn> Acked-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
121 lines
2.8 KiB
ArmAsm
121 lines
2.8 KiB
ArmAsm
#------------------------------------------------------------------------------
|
|
#
|
|
# LoongArch ASM IO CSR operation functions
|
|
#
|
|
# Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR>
|
|
#
|
|
# SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
#
|
|
#------------------------------------------------------------------------------
|
|
|
|
ASM_GLOBAL ASM_PFX (IoCsrRead8)
|
|
ASM_GLOBAL ASM_PFX (IoCsrRead16)
|
|
ASM_GLOBAL ASM_PFX (IoCsrRead32)
|
|
ASM_GLOBAL ASM_PFX (IoCsrRead64)
|
|
|
|
ASM_GLOBAL ASM_PFX (IoCsrWrite8)
|
|
ASM_GLOBAL ASM_PFX (IoCsrWrite16)
|
|
ASM_GLOBAL ASM_PFX (IoCsrWrite32)
|
|
ASM_GLOBAL ASM_PFX (IoCsrWrite64)
|
|
|
|
#/**
|
|
# IO CSR read byte operation.
|
|
#
|
|
# @param[in] Select IO CSR read instruction select values.
|
|
#
|
|
# @return The return value of iocsrrd.b instruction.
|
|
#
|
|
#**/
|
|
ASM_PFX (IoCsrRead8):
|
|
iocsrrd.b $a0, $a0
|
|
jirl $zero, $ra, 0
|
|
|
|
#/**
|
|
# IO CSR read half word operation.
|
|
#
|
|
# @param[in] Select IO CSR read instruction select values.
|
|
#
|
|
# @return The return value of iocsrrd.h instruction.
|
|
#
|
|
#**/
|
|
ASM_PFX (IoCsrRead16):
|
|
iocsrrd.h $a0, $a0
|
|
jirl $zero, $ra, 0
|
|
|
|
#/**
|
|
# IO CSR read word operation.
|
|
#
|
|
# @param[in] Select IO CSR read instruction select values.
|
|
#
|
|
# @return The return value of iocsrrd.w instruction.
|
|
#
|
|
#**/
|
|
ASM_PFX (IoCsrRead32):
|
|
iocsrrd.w $a0, $a0
|
|
jirl $zero, $ra, 0
|
|
|
|
#/**
|
|
# IO CSR read double word operation. Only for LoongArch64.
|
|
#
|
|
# @param[in] Select IO CSR read instruction select values.
|
|
#
|
|
# @return The return value of iocsrrd.d instruction.
|
|
#
|
|
#**/
|
|
ASM_PFX (IoCsrRead64):
|
|
iocsrrd.d $a0, $a0
|
|
jirl $zero, $ra, 0
|
|
|
|
#/**
|
|
# IO CSR write byte operation.
|
|
#
|
|
# @param[in] Select IO CSR write instruction select values.
|
|
# @param[in] Value The iocsrwr.b will write the value.
|
|
#
|
|
# @return VOID.
|
|
#
|
|
#**/
|
|
ASM_PFX (IoCsrWrite8):
|
|
iocsrwr.b $a1, $a0
|
|
jirl $zero, $ra, 0
|
|
|
|
#/**
|
|
# IO CSR write half word operation.
|
|
#
|
|
# @param[in] Select IO CSR write instruction select values.
|
|
# @param[in] Value The iocsrwr.h will write the value.
|
|
#
|
|
# @return VOID.
|
|
#
|
|
#**/
|
|
ASM_PFX (IoCsrWrite16):
|
|
iocsrwr.h $a1, $a0
|
|
jirl $zero, $ra, 0
|
|
|
|
#/**
|
|
# IO CSR write word operation.
|
|
#
|
|
# @param[in] Select IO CSR write instruction select values.
|
|
# @param[in] Value The iocsrwr.w will write the value.
|
|
#
|
|
# @return VOID.
|
|
#
|
|
#**/
|
|
ASM_PFX (IoCsrWrite32):
|
|
iocsrwr.w $a1, $a0
|
|
jirl $zero, $ra, 0
|
|
|
|
#/**
|
|
# IO CSR write double word operation. Only for LoongArch64.
|
|
#
|
|
# @param[in] Select IO CSR write instruction select values.
|
|
# @param[in] Value The iocsrwr.d will write the value.
|
|
#
|
|
# @return VOID.
|
|
#
|
|
#**/
|
|
ASM_PFX (IoCsrWrite64):
|
|
iocsrwr.d $a1, $a0
|
|
jirl $zero, $ra, 0
|
|
.end
|