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MdePkg: Add LoongArch64 FPU function set into BaseCpuLib

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Adding InitializeFloatingPointUnits, EnableFloatingPointUnits and
DisableFloatingPointUnits functions for LoongArch64.

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
2024-01-03 10:27:56 +08:00
committed by Liming Gao
parent 9e1576bc10
commit e5b5073153
5 changed files with 128 additions and 7 deletions
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43
MdePkg/Include/Library/CpuLib.h
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@@ -8,6 +8,7 @@
As a result, these services could not be defined in the Base Library.
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -41,14 +42,16 @@ CpuFlushTlb (
VOID
);
#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64) || defined (MDE_CPU_LOONGARCH64)
/**
Initialize the CPU floating point units.
Initializes floating point units for requirement of UEFI specification.
This function initializes floating-point control word to 0x027F (all exceptions
masked,double-precision, round-to-nearest) and multimedia-extensions control word
(if supported) to 0x1F80 (all exceptions masked, round-to-nearest, flush to zero
for masked underflow).
For IA32 and X64, this function initializes floating-point control word to 0x027F
(all exceptions masked,double-precision, round-to-nearest) and multimedia-extensions
control word (if supported) to 0x1F80 (all exceptions masked, round-to-nearest,
flush to zero for masked underflow).
**/
VOID
EFIAPI
@@ -56,6 +59,10 @@ InitializeFloatingPointUnits (
VOID
);
#endif
#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
/**
Determine if the standard CPU signature is "AuthenticAMD".
@retval TRUE The CPU signature matches.
@@ -89,4 +96,30 @@ GetCpuSteppingId (
#endif
#if defined (MDE_CPU_LOONGARCH64)
/**
Enable the CPU floating point units.
Enable the CPU floating point units.
**/
VOID
EFIAPI
EnableFloatingPointUnits (
VOID
);
/**
Disable the CPU floating point units.
Disable the CPU floating point units.
**/
VOID
EFIAPI
DisableFloatingPointUnits (
VOID
);
#endif
#endif