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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
Download Patch File Download Diff File Expand all files Collapse all files

7
MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
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@@ -65,8 +65,11 @@
RiscV/Cpu.S
[Sources.LOONGARCH64]
LoongArch/CpuFlushTlb.S | GCC
LoongArch/CpuSleep.S | GCC
LoongArch/CpuFlushTlb.S | GCC
LoongArch/CpuSleep.S | GCC
LoongArch/InitializeFpu.S | GCC
LoongArch/EnableFpu.S | GCC
LoongArch/DisableFpu.S | GCC
[Packages]
MdePkg/MdePkg.dec

17
MdePkg/Library/BaseCpuLib/LoongArch/DisableFpu.S Normal file
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@@ -0,0 +1,17 @@
#------------------------------------------------------------------------------
#
# DisableFloatingPointUnits() for LoongArch64
#
# Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(DisableFloatingPointUnits)
ASM_PFX(DisableFloatingPointUnits):
li.w $t0, 0x1
csrxchg $zero, $t0, 0x2
jirl $zero, $ra, 0
.end

17
MdePkg/Library/BaseCpuLib/LoongArch/EnableFpu.S Normal file
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@@ -0,0 +1,17 @@
#------------------------------------------------------------------------------
#
# EnableFloatingPointUnits() for LoongArch64
#
# Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(EnableFloatingPointUnits)
ASM_PFX(EnableFloatingPointUnits):
li.w $t0, 0x1
csrxchg $t0, $t0, 0x2
jirl $zero, $ra, 0
.end

51
MdePkg/Library/BaseCpuLib/LoongArch/InitializeFpu.S Normal file
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@@ -0,0 +1,51 @@
#------------------------------------------------------------------------------
#
# InitializeFloatingPointUnits() for LoongArch64
#
# Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(InitializeFloatingPointUnits)
ASM_PFX(InitializeFloatingPointUnits):
li.d $t0, 0x0 // RNE mode
movgr2fcsr $r0, $t0
li.d $t1, -1 // SNaN
movgr2fr.d $f0, $t1
movgr2fr.d $f1, $t1
movgr2fr.d $f2, $t1
movgr2fr.d $f3, $t1
movgr2fr.d $f4, $t1
movgr2fr.d $f5, $t1
movgr2fr.d $f6, $t1
movgr2fr.d $f7, $t1
movgr2fr.d $f8, $t1
movgr2fr.d $f9, $t1
movgr2fr.d $f10, $t1
movgr2fr.d $f11, $t1
movgr2fr.d $f12, $t1
movgr2fr.d $f13, $t1
movgr2fr.d $f14, $t1
movgr2fr.d $f15, $t1
movgr2fr.d $f16, $t1
movgr2fr.d $f17, $t1
movgr2fr.d $f18, $t1
movgr2fr.d $f19, $t1
movgr2fr.d $f20, $t1
movgr2fr.d $f21, $t1
movgr2fr.d $f22, $t1
movgr2fr.d $f23, $t1
movgr2fr.d $f24, $t1
movgr2fr.d $f25, $t1
movgr2fr.d $f26, $t1
movgr2fr.d $f27, $t1
movgr2fr.d $f28, $t1
movgr2fr.d $f29, $t1
movgr2fr.d $f30, $t1
movgr2fr.d $f31, $t1
jirl $zero, $ra, 0
.end