Add LoongArch64 support

.github/workflows/Linux.yml

@@ -16,14 +16,15 @@ env:
   GCC5_ARM_PREFIX: arm-linux-gnueabi-
   GCC5_AARCH64_PREFIX: aarch64-linux-gnu-
   GCC5_RISCV64_PREFIX: riscv64-linux-gnu-
+  GCC5_LOONGARCH64_PREFIX: loongarch64-unknown-linux-gnu-
 
 jobs:
   build:
     runs-on: ubuntu-latest
 
     strategy:
       matrix:
-        TARGET_TYPE: [ia32, x64, aa64, arm, riscv64]
+        TARGET_TYPE: [ia32, x64, aa64, arm, riscv64, loongarch64]
         include:
         - TARGET_TYPE: x64
           TARGET_ARCH: X64
@@ -40,6 +41,9 @@ jobs:
         - TARGET_TYPE: riscv64
           TARGET_ARCH: RISCV64
           TARGET_PKGS: gcc-riscv64-linux-gnu
+        - TARGET_TYPE: loongarch64
+          TARGET_ARCH: LOONGARCH64
+          TARGET_PKGS: gcc-multilib
 
     steps:
     - name: Check out repository
@@ -61,12 +65,17 @@ jobs:
       run: |
         sudo apt-get update
         sudo apt-get -y --no-install-recommends install python3-setuptools uuid-dev ${{ matrix.TARGET_PKGS }}
+        if [[ "${{ matrix.TARGET_ARCH }}" == "LOONGARCH64" ]]; then
+          curl -L -O https://github.com/loongson/build-tools/releases/download/2024.11.01/x86_64-cross-tools-loongarch64-binutils_2.43.1-gcc_14.2.0-glibc_2.40.tar.xz
+          tar -xJf x86_64-cross-tools-loongarch64-binutils_2.43.1-gcc_14.2.0-glibc_2.40.tar.xz
+          echo "$PWD/cross-tools/bin" >> "$GITHUB_PATH"
+        fi
 
     - name: Set up EDK2
       run: |
         # We must patch EDK2's OpenSSL module to be able to import/export certificates and keys
         patch --binary -d edk2 -p1 -i ../Add-extra-PKCS-encoding-and-decoding-to-OpensslLibFull.patch
-        # And we must patch OpenSSL itself to fix ARM and RISCV64 compilation
+        # And we must patch OpenSSL itself to fix ARM, RISCV64 and LOONGARCH compilation
         if [ -f OpenSSL-submodule-fixes-for-${{ matrix.TARGET_ARCH }}-compilation.patch ]; then
           patch -d edk2/CryptoPkg/Library/OpensslLib/openssl -p1 -i ../../../../../OpenSSL-submodule-fixes-for-${{ matrix.TARGET_ARCH }}-compilation.patch
         fi

MosbyPkg.dsc

@@ -1,7 +1,7 @@
 ## @file
 #  MSSB Application
 #
-#  Copyright (c) 2024, Pete Batard <[email protected]>
+#  Copyright (c) 2024-2025, Pete Batard <[email protected]>
 #
 #  SPDX-License-Identifier: GPL-3.0-or-later
 #
@@ -12,7 +12,7 @@
   PLATFORM_GUID                  = 8F782584-E305-4360-B11B-A92C6380D1D6
   PLATFORM_VERSION               = 1.0
   DSC_SPECIFICATION              = 0x00010005
-  SUPPORTED_ARCHITECTURES        = IA32|X64|EBC|ARM|AARCH64|RISCV64
+  SUPPORTED_ARCHITECTURES        = IA32|X64|EBC|ARM|AARCH64|RISCV64|LOONGARCH64
   OUTPUT_DIRECTORY               = Build
   BUILD_TARGETS                  = DEBUG|RELEASE|NOOPT
   SKUID_IDENTIFIER               = DEFAULT

OpenSSL-submodule-fixes-for-LOONGARCH64-compilation.patch

@@ -0,0 +1,26 @@
+From 16f95d56d81712f763728b20290ca7ba7434590f Mon Sep 17 00:00:00 2001
+From: Pete Batard <[email protected]>
+Date: Wed, 29 Jan 2025 11:21:24 +0000
+Subject: [PATCH] OpenSSL submodule fixes for LOONGARCH64 compilation
+
+* left shift was generating references to __ashlti3 which we don't have.
+---
+ crypto/ec/curve448/f_generic.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/crypto/ec/curve448/f_generic.c b/crypto/ec/curve448/f_generic.c
+index 4c571810d3..3084d82319 100644
+--- a/crypto/ec/curve448/f_generic.c
++++ b/crypto/ec/curve448/f_generic.c
+@@ -80,7 +80,7 @@ mask_t gf_deserialize(gf x, const uint8_t serial[SER_BYTES], int with_hibit,
+             sj = serial[j];
+             if (j == nbytes - 1)
+                 sj &= ~hi_nmask;
+-            buffer |= ((dword_t) sj) << fill;
++            ((uint8_t*)&buffer)[j] = sj;
+             fill += 8;
+             j++;
+         }
+-- 
+2.45.2.windows.1
+

src/mosby.h

@@ -61,6 +61,8 @@
 	#define ARCH_EXT                L"arm"
 #elif defined(_M_RISCV64) || (defined (__riscv) && (__riscv_xlen == 64))
 	#define ARCH_EXT                L"riscv64"
+#elif defined (_M_LOONGARCH64) || defined (__loongarch64)
+	#define ARCH_EXT                L"loongarch64"
 #else
 #	error Unsupported architecture
 #endif