4 files changed, 90 insertions, 2 deletions
diff --git a/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf b/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
index 9a162afe6d..89f6272f11 100644
--- a/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
+++ b/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
@@ -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
diff --git a/MdePkg/Library/BaseCpuLib/LoongArch/DisableFpu.S b/MdePkg/Library/BaseCpuLib/LoongArch/DisableFpu.S
new file mode 100644
index 0000000000..33c6bf3411
--- /dev/null
+++ b/MdePkg/Library/BaseCpuLib/LoongArch/DisableFpu.S
@@ -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
diff --git a/MdePkg/Library/BaseCpuLib/LoongArch/EnableFpu.S b/MdePkg/Library/BaseCpuLib/LoongArch/EnableFpu.S
new file mode 100644
index 0000000000..3e4f7411f1
--- /dev/null
+++ b/MdePkg/Library/BaseCpuLib/LoongArch/EnableFpu.S
@@ -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
diff --git a/MdePkg/Library/BaseCpuLib/LoongArch/InitializeFpu.S b/MdePkg/Library/BaseCpuLib/LoongArch/InitializeFpu.S
new file mode 100644
index 0000000000..2cea5558a6
--- /dev/null
+++ b/MdePkg/Library/BaseCpuLib/LoongArch/InitializeFpu.S
@@ -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