From 644e5790cdc59f9234a84ede77de9d8f9aa0327b Mon Sep 17 00:00:00 2001
From: Dongyan Qian <qiandongyan@loongson.cn>
Date: Tue, 17 Mar 2026 11:44:53 +0800
Subject: [PATCH] OvmfPkg/VirtMmCommunicationDxe: enable loongarch64

For QEMU version support references, please see:
https://github.com/qemu/qemu/commit/e1092f765d9c0bf33762a03fe45e3d0de86c86a6

Suggested-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dongyan Qian <qiandongyan@loongson.cn>
Cc: Chao Li <lichao@loongson.cn>
Cc: Bibo Mao <maobibo@loongson.cn>
Cc: Xianglai Li <lixianglai@loongson.cn>
Cc: Bo Zhu <zhubo@loongson.cn>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Mike Beaton <mjsbeaton@gmail.com>
---
 OvmfPkg/VirtMmCommunicationDxe/VirtMmCommunication.c |  2 ++
 .../VirtMmCommunicationDxe/VirtMmCommunication.inf   | 12 ++++++------
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/OvmfPkg/VirtMmCommunicationDxe/VirtMmCommunication.c b/OvmfPkg/VirtMmCommunicationDxe/VirtMmCommunication.c
index 20f2806ea4..90d28b2980 100644
--- a/OvmfPkg/VirtMmCommunicationDxe/VirtMmCommunication.c
+++ b/OvmfPkg/VirtMmCommunicationDxe/VirtMmCommunication.c
@@ -406,6 +406,8 @@ ReturnErrorStatus:
       "  'qemu-system-aarch64 -device uefi-vars-sysbus'\n"
  #elif defined (MDE_CPU_RISCV64)
       "  'qemu-system-riscv64 -device uefi-vars-sysbus'\n"
+ #elif defined (MDE_CPU_LOONGARCH64)
+      "  'qemu-system-loongarch64 -device uefi-vars-sysbus'\n"
  #else
       #error unsupported architecture
  #endif
diff --git a/OvmfPkg/VirtMmCommunicationDxe/VirtMmCommunication.inf b/OvmfPkg/VirtMmCommunicationDxe/VirtMmCommunication.inf
index c7e7dcfb3f..99da655b33 100644
--- a/OvmfPkg/VirtMmCommunicationDxe/VirtMmCommunication.inf
+++ b/OvmfPkg/VirtMmCommunicationDxe/VirtMmCommunication.inf
@@ -13,7 +13,7 @@
   MODULE_TYPE                    = DXE_RUNTIME_DRIVER
   VERSION_STRING                 = 1.0
   ENTRY_POINT                    = VirtMmCommunication2Initialize
-  VALID_ARCHITECTURES            = X64 AARCH64 RISCV64
+  VALID_ARCHITECTURES            = X64 AARCH64 RISCV64 LOONGARCH64
 
 [Sources]
   VirtMmCommunication.c
@@ -23,7 +23,7 @@
   QemuHwInfo.c
   QemuMmio.c
 
-[Sources.AARCH64, Sources.RISCV64]
+[Sources.AARCH64, Sources.RISCV64, Sources.LOONGARCH64]
   QemuFdt.c
   QemuMmio.c
 
@@ -32,7 +32,7 @@
   MdeModulePkg/MdeModulePkg.dec
   OvmfPkg/OvmfPkg.dec
 
-[Packages.AARCH64, Packages.RISCV64]
+[Packages.AARCH64, Packages.RISCV64, Packages.LOONGARCH64]
   EmbeddedPkg/EmbeddedPkg.dec
 
 [LibraryClasses]
@@ -48,7 +48,7 @@
   DxeHardwareInfoLib
   QemuFwCfgLib
 
-[LibraryClasses.AARCH64, LibraryClasses.RISCV64]
+[LibraryClasses.AARCH64, LibraryClasses.RISCV64, LibraryClasses.LOONGARCH64]
   FdtLib
 
 [FeaturePcd]
@@ -60,7 +60,7 @@
   gEfiMmCommunication2ProtocolGuid              ## PRODUCES
   gEfiSmmVariableProtocolGuid                   ## PRODUCES
 
-[Protocols.AARCH64, Protocols.RISCV64]
+[Protocols.AARCH64, Protocols.RISCV64, Protocols.LOONGARCH64]
   gFdtClientProtocolGuid
 
 [Guids]
@@ -72,5 +72,5 @@
 [Depex]
   gEfiCpuArchProtocolGuid
 
-[Depex.AARCH64, Depex.RISCV64]
+[Depex.AARCH64, Depex.RISCV64, Depex.LOONGARCH64]
   gFdtClientProtocolGuid