Add a new header file CpuMmuLib.h, whitch is referenced from
ArmPkg/Include/Library/ArmMmuLib.h. Currently, only support for
LoongArch64 is added, and more architectures can be accommodated in the
future.

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4734

Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Cc: Andrei Warkentin <andrei.warkentin@intel.com>
Signed-off-by: Chao Li <lichao@loongson.cn>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
---
UefiCpuPkg/Include/Library/CpuMmuLib.h | 55 ++++++++++++++++++++++++++
UefiCpuPkg/UefiCpuPkg.dec              | 4 ++
2 files changed, 59 insertions(+)
create mode 100644 UefiCpuPkg/Include/Library/CpuMmuLib.h

diff --git a/UefiCpuPkg/Include/Library/CpuMmuLib.h b/UefiCpuPkg/Include/Library/CpuMmuLib.h
new file mode 100644
index 0000000000..26d2d65524
--- /dev/null
+++ b/UefiCpuPkg/Include/Library/CpuMmuLib.h
@@ -0,0 +1,33 @@
+/** @file
+
+ Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef CPU_MMU_LIB_H_
+#define CPU_MMU_LIB_H_
+
+#include <Uefi/UefiBaseType.h>
+
+/**
+ Sets the Attributes of the specified memory region.
+
+ @param[in] BaseAddress    The base address of the memory region to set the Attributes.
+ @param[in] Length         The length of the memory region to set the Attributes.
+ @param[in] Attributes     The Attributes to be set.
+ @param[in] AttributeMask Mask of memory attributes to take into account.
+
+ @retval EFI_SUCCESS    The Attributes was set successfully
+**/
+EFI_STATUS
+EFIAPI
+SetMemoryRegionAttributes (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINTN                 Length,
+ IN UINTN                 Attributes,
+ IN UINT64                AttributeMask
+ );
+
+#endif // CPU_MMU_LIB_H_
diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec
index 571b59b36f..ca744fab55 100644
--- a/UefiCpuPkg/UefiCpuPkg.dec
+++ b/UefiCpuPkg/UefiCpuPkg.dec
@@ -72,6 +72,10 @@ [LibraryClasses.RISCV64]
   ##
   RiscVMmuLib|Include/Library/BaseRiscVMmuLib.h

+[LibraryClasses.LoongArch64]
+ ## @libraryclass Provides functions for the memory management unit.
+ CpuMmuLib|Include/Library/CpuMmuLib.h
+
[Guids]
   gUefiCpuPkgTokenSpaceGuid      = { 0xac05bf33, 0x995a, 0x4ed4, { 0xaa, 0xb8, 0xef, 0x7a, 0xe8, 0xf, 0x5c, 0xb0 }}
   gMsegSmramGuid                 = { 0x5802bce4, 0xeeee, 0x4e33, { 0xa1, 0x30, 0xeb, 0xad, 0x27, 0xf0, 0xe4, 0x39 }}