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MdePkg: Add read stable counter operation for LoongArch

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Add LoongArch gets stable counter ASM function.

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>
This commit is contained in:
Chao Li 2023-10-12 11:18:28 +08:00 committed by Liming Gao
parent 344dc4b9d3
commit 414ad233a5
3 changed files with 37 additions and 0 deletions
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12
MdePkg/Include/Library/BaseLib.h
View File

@ -339,6 +339,18 @@ AsmCpucfg (
OUT UINT32 *Data OUT UINT32 *Data
); );
/**
Gets the timer count value.
@param[] VOID
@retval timer count value.
**/
UINTN
AsmReadStableCounter (
VOID
);
#endif // defined (MDE_CPU_LOONGARCH64) #endif // defined (MDE_CPU_LOONGARCH64)
// //

1
MdePkg/Library/BaseLib/BaseLib.inf
View File

@ -422,6 +422,7 @@
LoongArch64/SwitchStack.S | GCC LoongArch64/SwitchStack.S | GCC
LoongArch64/ExceptionBase.S | GCC LoongArch64/ExceptionBase.S | GCC
LoongArch64/Cpucfg.S | GCC LoongArch64/Cpucfg.S | GCC
LoongArch64/ReadStableCounter.S | GCC
[Packages] [Packages]
MdePkg/MdePkg.dec MdePkg/MdePkg.dec

24
MdePkg/Library/BaseLib/LoongArch64/ReadStableCounter.S Normal file
View File

@ -0,0 +1,24 @@
#------------------------------------------------------------------------------
#
# LoongArch Read Stable Counter
#
# Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(AsmReadStableCounter)
#/**
# Gets the timer count value.
#
# @param[] VOID
# @retval timer count value.
#
#**/
ASM_PFX(AsmReadStableCounter):
rdtime.d $a0, $zero
jirl $zero, $ra, 0
.end