From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by spool.mail.gandi.net (Postfix) with ESMTPS id 459D57803CC for ; Mon, 20 Nov 2023 03:26:29 +0000 (UTC) DKIM-Signature: a=rsa-sha256; bh=dou0eqXW/WsRYKnFUtuQLnBIgWuGCLNZ5A9tMUKmyec=; c=relaxed/simple; d=groups.io; h=Message-ID:Date:MIME-Version:User-Agent:Subject:To:Cc:References:From:In-Reply-To:Precedence:List-Subscribe:List-Help:Sender:List-Id:Mailing-List:Delivered-To:Reply-To:List-Unsubscribe-Post:List-Unsubscribe:Content-Type; s=20140610; t=1700450787; v=1; b=PipYFeLZkxzjppn3ke82kQjK9ZVymriADJN08b36nxZGG41A+F7ASI3QGhEQOcnazkl1j/wJ fFvNgj3U4LFvFyRDxJ1y7zuhQWG/uxdAp+IknI8RGvjhH06r+xY6xnOEUzhiumPPhUQ3iT/zQvW 1BKeRojb39yl5mfqwQrkJcas= X-Received: by 127.0.0.2 with SMTP id EBujYY7687511xTYGPNyXsVB; Sun, 19 Nov 2023 19:26:27 -0800 X-Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by mx.groups.io with SMTP id smtpd.web11.43289.1700450786265097513 for ; Sun, 19 Nov 2023 19:26:27 -0800 X-Received: from loongson.cn (unknown [10.40.24.149]) by gateway (Coremail) with SMTP id _____8AxEvDf0VplFSI7AA--.50687S3; Mon, 20 Nov 2023 11:26:23 +0800 (CST) X-Received: from [10.40.24.149] (unknown [10.40.24.149]) by localhost.localdomain (Coremail) with SMTP id AQAAf8DxfS_d0VplIjhHAA--.25316S3; Mon, 20 Nov 2023 11:26:21 +0800 (CST) Message-ID: <01436801-9a8d-46ec-9c0f-e85051340fc5@loongson.cn> Date: Mon, 20 Nov 2023 11:26:21 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [edk2-devel] [PATCH v3 13/39] UefiCpuPkg: Add CpuMmuLib.h to UefiCpuPkg To: devel@edk2.groups.io, andrei.warkentin@intel.com Cc: "Dong, Eric" , "Ni, Ray" , "Kumar, Rahul R" , Gerd Hoffmann , Leif Lindholm , Ard Biesheuvel , Sami Mujawar , Sunil V L , Tuan Phan References: <20231117095742.3605778-1-lichao@loongs> <20231117100026.3609206-1-lichao@loongson.cn> From: "Chao Li" In-Reply-To: X-CM-TRANSID: AQAAf8DxfS_d0VplIjhHAA--.25316S3 X-CM-SenderInfo: xolfxt3r6o00pqjv00gofq/1tbiAQABCGVawioAkwAMsA X-Coremail-Antispam: 1Uk129KBj93XoW3Gr13Ar1rtw4fKw4kCr1kCrX_yoW3WrWkpr 1DCrW5Gw4UKrW3XrWxJFsagr1kC395Ga4UGrWqyrn5Cw4rJ3sruFZIkw1jqFZFvF1fua4U Zay2gw47uFWrG3gCm3ZEXasCq-sJn29KB7ZKAUJUUUU8529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnRJUUUyKb4IE77IF4wAF F20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r 1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0Y4vE2Ix0cI8IcVAF wI0_JFI_Gr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1l84ACjcxK6I8E87Iv67 AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVCY1x0267AKxVW8Jr0_Cr1UM2AIxVAIcxkEcVAq 07x20xvEncxIr21l57IF6xkI12xvs2x26I8E6xACxx1lYx0E2Ix0cI8IcVAFwI0_JF0_Jw 1lYx0Ex4A2jsIE14v26r4j6F4UMcvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvEwIxGrwCj r7xvwVCIw2I0I7xG6c02F41l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr 1lx2IqxVAqx4xG67AKxVWUGVWUWwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE 14v26r1q6r43MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7 IYx2IY6xkF7I0E14v26r1j6r4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E 87Iv67AKxVW8JVWxJwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73Uj IFyTuYvjxUwXo2UUUUU Precedence: Bulk List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,lichao@loongson.cn List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: yHp79NIzRoG5UJtIIRIMGaOOx7686176AA= Content-Type: multipart/alternative; boundary="------------O9O03rz0PNa9gO6XE8YgLOE0" X-GND-Status: LEGIT Authentication-Results: spool.mail.gandi.net; dkim=pass header.d=groups.io header.s=20140610 header.b=PipYFeLZ; dmarc=none; spf=pass (spool.mail.gandi.net: domain of bounce@groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce@groups.io --------------O9O03rz0PNa9gO6XE8YgLOE0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Hi Anderi, There are indeed typos and I will fix them in V4. Thank you! Thanks, Chao On 2023/11/18 04:18, Andrei Warkentin wrote: > +Tuan as a heads-up. > > This seems reasonable to me. What does the "Uint" mean in ConfigureMemory= ManagementUint? > > Did you intend to say "Unit"? > > Reviewed-by: Andrei Warkentin > >> -----Original Message----- >> From: Chao Li >> Sent: Friday, November 17, 2023 4:00 AM >> To:devel@edk2.groups.io >> Cc: Dong, Eric; Ni, Ray; Kumar, >> Rahul R; Gerd Hoffmann; >> Leif Lindholm; Ard Biesheuvel >> ; Sami Mujawar; >> Sunil V L; Warkentin, Andrei >> >> Subject: [PATCH v3 13/39] UefiCpuPkg: Add CpuMmuLib.h to UefiCpuPkg >> >> 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=3D4584 >> >> Cc: Eric Dong >> Cc: Ray Ni >> Cc: Rahul Kumar >> Cc: Gerd Hoffmann >> Cc: Leif Lindholm >> Cc: Ard Biesheuvel >> Cc: Sami Mujawar >> Cc: Sunil V L >> Cc: Andrei Warkentin >> Signed-off-by: Chao Li >> --- >> UefiCpuPkg/Include/Library/CpuMmuLib.h | 155 >> +++++++++++++++++++++++++ >> UefiCpuPkg/UefiCpuPkg.dec | 4 + >> 2 files changed, 159 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..23b2fe34ac >> --- /dev/null >> +++ b/UefiCpuPkg/Include/Library/CpuMmuLib.h >> @@ -0,0 +1,155 @@ >> +/** @file >> + >> + Copyright (c) 2023 Loongson Technology Corporation Limited. All >> + rights reserved.
>> + >> + SPDX-License-Identifier: BSD-2-Clause-Patent >> + >> +**/ >> + >> +#ifndef CPU_MMU_LIB_H_ >> +#define CPU_MMU_LIB_H_ >> + >> +#include >> + >> +#define EFI_MEMORY_CACHETYPE_MASK (EFI_MEMORY_UC | \ >> + EFI_MEMORY_WC | \ >> + EFI_MEMORY_WT | \ >> + EFI_MEMORY_WB | \ >> + EFI_MEMORY_UCE \ >> + ) >> + >> +typedef struct { >> + EFI_PHYSICAL_ADDRESS PhysicalBase; >> + EFI_VIRTUAL_ADDRESS VirtualBase; >> + UINTN Length; >> + UINTN Attributes; >> +} MEMORY_REGION_DESCRIPTOR; >> + >> +/** >> + Converts EFI Attributes to corresponding architecture Attributes. >> + >> + @param[in] EfiAttributes Efi Attributes. >> + >> + @retval Corresponding architecture attributes. >> +**/ >> +UINTN >> +EfiAttributeConverse ( >> + IN UINTN EfiAttributes >> + ); >> + >> +/** >> + Finds the length and memory properties of the memory region >> corresponding to the specified base address. >> + >> + @param[in] BaseAddress To find the base address of the memory >> region. >> + @param[in] EndAddress To find the end address of the memory regi= on. >> + @param[out] RegionLength The length of the memory region found. >> + @param[out] RegionAttributes Properties of the memory region foun= d. >> + >> + @retval EFI_SUCCESS The corresponding memory area was successfull= y >> found >> + EFI_NOT_FOUND No memory area found >> +**/ >> +EFI_STATUS >> +GetMemoryRegionAttribute ( >> + IN UINTN BaseAddress, >> + IN UINTN EndAddress, >> + OUT UINTN *RegionLength, >> + OUT UINTN *RegionAttributes >> + ); >> + >> +/** >> + Sets the Attributes of the specified memory region >> + >> + @param[in] BaseAddress The base address of the memory region to s= et >> 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 >> +SetMemoryRegionAttributes ( >> + IN EFI_PHYSICAL_ADDRESS BaseAddress, >> + IN UINTN Length, >> + IN UINTN Attributes, >> + IN UINT64 AttributeMask >> + ); >> + >> +/** >> + Sets the non-executable Attributes for 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. >> + >> + @retval EFI_SUCCESS The Attributes was set successfully >> +**/ >> +EFI_STATUS >> +SetMemoryRegionNoExec ( >> + IN EFI_PHYSICAL_ADDRESS BaseAddress, >> + IN UINTN Length >> + ); >> + >> +/** >> + Clears the non-executable Attributes for the specified memory region >> + >> + @param[in] BaseAddress The base address of the memory region to cle= ar >> the Attributes. >> + @param[in] Length The length of the memory region to clear the >> Attributes. >> + >> + @retval EFI_SUCCESS The Attributes was clear successfully >> +**/ >> +EFI_STATUS >> +EFIAPI >> +ClearMemoryRegionNoExec ( >> + IN EFI_PHYSICAL_ADDRESS BaseAddress, >> + IN UINT64 Length >> + ); >> + >> +/** >> + Sets the read-only Attributes for 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. >> + >> + @retval EFI_SUCCESS The Attributes was set successfully >> +**/ >> +EFI_STATUS >> +EFIAPI >> +SetMemoryRegionReadOnly ( >> + IN EFI_PHYSICAL_ADDRESS BaseAddress, >> + IN UINT64 Length >> + ); >> + >> +/** >> + Clears the read-only Attributes for the specified memory region >> + >> + @param[in] BaseAddress The base address of the memory region to cle= ar >> the Attributes. >> + @param[in] Length The length of the memory region to clear the >> Attributes. >> + >> + @retval EFI_SUCCESS The Attributes was clear successfully >> +**/ >> +EFI_STATUS >> +EFIAPI >> +ClearMemoryRegionReadOnly ( >> + IN EFI_PHYSICAL_ADDRESS BaseAddress, >> + IN UINT64 Length >> + ); >> + >> +/** >> + Create a page table and initialize the memory management unit(MMU). >> + >> + @param[in] MemoryTable A pointer to a memory ragion table. >> + @param[out] TranslationTableBase A pointer to a translation table ba= se >> address. >> + @param[out] TranslationTableSize A pointer to a translation table ba= se >> size. >> + >> + @retval EFI_SUCCESS Configure MMU successfully. >> + EFI_INVALID_PARAMETER MemoryTable is NULL. >> + EFI_UNSUPPORTED Out of memory space or size not a= ligned. >> +**/ >> +EFI_STATUS >> +EFIAPI >> +ConfigureMemoryManagementUint ( >> + IN MEMORY_REGION_DESCRIPTOR *MemoryTable, >> + OUT VOID **TranslationTableBase OPTIONAL, >> + OUT UINTN *TranslationTableSize OPTIONAL >> + ); >> + >> +#endif // CPU_MMU_LIB_H_ >> diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec index >> 154b1d06fe..150beae981 100644 >> --- a/UefiCpuPkg/UefiCpuPkg.dec >> +++ b/UefiCpuPkg/UefiCpuPkg.dec >> @@ -62,6 +62,10 @@ >> ## @libraryclass Provides function for manipulating x86 paging str= uctures. >> CpuPageTableLib|Include/Library/CpuPageTableLib.h >> >> +[LibraryClasses.LoongArch64] >> + ## @libraryclass Provides macros and functions for the memory >> management unit. >> + CpuMmuLib|Include/Library/CpuMmuLib.h >> + >> ## @libraryclass Provides functions for manipulating smram savesta= te >> registers. >> MmSaveStateLib|Include/Library/MmSaveStateLib.h >> >> -- >> 2.27.0 > > >=20 > -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#111442): https://edk2.groups.io/g/devel/message/111442 Mute This Topic: https://groups.io/mt/102644768/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- --------------O9O03rz0PNa9gO6XE8YgLOE0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

Hi Anderi,

There are indeed typos and I will fix them in V4. Thank you!


=
Thanks,
Chao
On 2023/11/18 04:18, Andrei Warkentin wrote:
+Tuan as a heads-up.

This seems reasonable to me. What does the "Uint" mean in ConfigureMemoryMa=
nagementUint?

Did you intend to say "Unit"?

Reviewed-by: Andrei Warkentin <andrei.warkentin@intel.com>


-----Original Message-----
From: Chao Li <lichao@loongson.cn>
Sent: Friday, November 17, 2023 4:00 AM
To: devel@edk2.groups.io
Cc: Dong, Eric <eric.dong@intel.com>; Ni, Ray <ray.ni@intel.com>; =
Kumar,
Rahul R <rahul.r.kumar@intel.com>; Gerd Hoffmann <kraxel@redhat.com&=
gt;;
Leif Lindholm <quic_llindhol@quicinc.com>; Ard Biesheuvel
<ardb+tianocore@kernel.org>; Sami Mujawar <sami.mujawar@arm.com=
>;
Sunil V L <sunilvl@ventanamicro.com>; Warkentin, Andrei
<andrei.warkentin@intel.com>
Subject: [PATCH v3 13/39] UefiCpuPkg: Add CpuMmuLib.h to UefiCpuPkg

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=
=3D4584

Cc: Eric Dong <eric.dong@intel.com>
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>
---
 UefiCpuPkg/Include/Library/CpuMmuLib.h | 155
+++++++++++++++++++++++++
 UefiCpuPkg/UefiCpuPkg.dec              |   4 +
 2 files changed, 159 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..23b2fe34ac
--- /dev/null
+++ b/UefiCpuPkg/Include/Library/CpuMmuLib.h
@@ -0,0 +1,155 @@
+/** @file
+
+  Copyright (c) 2023 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>
+
+#define EFI_MEMORY_CACHETYPE_MASK  (EFI_MEMORY_UC  | \
+                                    EFI_MEMORY_WC  | \
+                                    EFI_MEMORY_WT  | \
+                                    EFI_MEMORY_WB  | \
+                                    EFI_MEMORY_UCE   \
+                                    )
+
+typedef struct {
+  EFI_PHYSICAL_ADDRESS    PhysicalBase;
+  EFI_VIRTUAL_ADDRESS     VirtualBase;
+  UINTN                   Length;
+  UINTN                   Attributes;
+} MEMORY_REGION_DESCRIPTOR;
+
+/**
+  Converts EFI Attributes to corresponding architecture Attributes.
+
+  @param[in]  EfiAttributes     Efi Attributes.
+
+  @retval  Corresponding architecture attributes.
+**/
+UINTN
+EfiAttributeConverse (
+  IN UINTN  EfiAttributes
+  );
+
+/**
+  Finds the length and memory properties of the memory region
corresponding to the specified base address.
+
+  @param[in]  BaseAddress    To find the base address of the memory
region.
+  @param[in]  EndAddress     To find the end address of the memory region.
+  @param[out]  RegionLength    The length of the memory region found.
+  @param[out]  RegionAttributes    Properties of the memory region found.
+
+  @retval  EFI_SUCCESS    The corresponding memory area was successfully
found
+           EFI_NOT_FOUND    No memory area found
+**/
+EFI_STATUS
+GetMemoryRegionAttribute (
+  IN     UINTN  BaseAddress,
+  IN     UINTN  EndAddress,
+  OUT    UINTN  *RegionLength,
+  OUT    UINTN  *RegionAttributes
+  );
+
+/**
+  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
+SetMemoryRegionAttributes (
+  IN EFI_PHYSICAL_ADDRESS  BaseAddress,
+  IN UINTN                 Length,
+  IN UINTN                 Attributes,
+  IN UINT64                AttributeMask
+  );
+
+/**
+  Sets the non-executable Attributes for 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.
+
+  @retval  EFI_SUCCESS    The Attributes was set successfully
+**/
+EFI_STATUS
+SetMemoryRegionNoExec (
+  IN  EFI_PHYSICAL_ADDRESS  BaseAddress,
+  IN  UINTN                 Length
+  );
+
+/**
+  Clears the non-executable Attributes for the specified memory region
+
+  @param[in]  BaseAddress  The base address of the memory region to clear
the Attributes.
+  @param[in]  Length       The length of the memory region to clear the
Attributes.
+
+  @retval  EFI_SUCCESS    The Attributes was clear successfully
+**/
+EFI_STATUS
+EFIAPI
+ClearMemoryRegionNoExec (
+  IN  EFI_PHYSICAL_ADDRESS  BaseAddress,
+  IN  UINT64                Length
+  );
+
+/**
+  Sets the read-only Attributes for 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.
+
+  @retval  EFI_SUCCESS    The Attributes was set successfully
+**/
+EFI_STATUS
+EFIAPI
+SetMemoryRegionReadOnly (
+  IN  EFI_PHYSICAL_ADDRESS  BaseAddress,
+  IN  UINT64                Length
+  );
+
+/**
+  Clears the read-only Attributes for the specified memory region
+
+  @param[in]  BaseAddress  The base address of the memory region to clear
the Attributes.
+  @param[in]  Length       The length of the memory region to clear the
Attributes.
+
+  @retval  EFI_SUCCESS    The Attributes was clear successfully
+**/
+EFI_STATUS
+EFIAPI
+ClearMemoryRegionReadOnly (
+  IN  EFI_PHYSICAL_ADDRESS  BaseAddress,
+  IN  UINT64                Length
+  );
+
+/**
+  Create a page table and initialize the memory management unit(MMU).
+
+  @param[in]  MemoryTable           A pointer to a memory ragion table.
+  @param[out] TranslationTableBase  A pointer to a translation table base
address.
+  @param[out] TranslationTableSize  A pointer to a translation table base
size.
+
+  @retval  EFI_SUCCESS                Configure MMU successfully.
+           EFI_INVALID_PARAMETER      MemoryTable is NULL.
+           EFI_UNSUPPORTED            Out of memory space or size not alig=
ned.
+**/
+EFI_STATUS
+EFIAPI
+ConfigureMemoryManagementUint (
+  IN  MEMORY_REGION_DESCRIPTOR  *MemoryTable,
+  OUT VOID                      **TranslationTableBase OPTIONAL,
+  OUT UINTN                     *TranslationTableSize  OPTIONAL
+  );
+
+#endif // CPU_MMU_LIB_H_
diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec index
154b1d06fe..150beae981 100644
--- a/UefiCpuPkg/UefiCpuPkg.dec
+++ b/UefiCpuPkg/UefiCpuPkg.dec
@@ -62,6 +62,10 @@
   ##  @libraryclass  Provides function for manipulating x86 paging structu=
res.
   CpuPageTableLib|Include/Library/CpuPageTableLib.h

+[LibraryClasses.LoongArch64]
+  ##  @libraryclass  Provides macros and functions for the memory
management unit.
+  CpuMmuLib|Include/Library/CpuMmuLib.h
+
   ## @libraryclass   Provides functions for manipulating smram savestate
registers.
   MmSaveStateLib|Include/Library/MmSaveStateLib.h

--
2.27.0
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