[PATCH v2 18/34] BaseTools: Enable LoongArch64 architecture for LoongArch64 EDK2 CI.

["Chao Li" <lichao@loongson.cn>]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4053

EDK CI for LoongArch64 architecture

Enable LoongArch64 architecture for LoongArch64 EDK2 CI testing.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Yuwei Chen <yuwei.chen@intel.com>

Signed-off-by: Chao Li <lichao@loongson.cn>
---
 ...gcc_loongarch64_unknown_linux_ext_dep.yaml | 22 +++++++++++++
 .../LinuxGcc5ToolChain/LinuxGcc5ToolChain.py  | 31 +++++++++++++++++++
 2 files changed, 53 insertions(+)
 create mode 100644 BaseTools/Bin/gcc_loongarch64_unknown_linux_ext_dep.yaml

diff --git a/BaseTools/Bin/gcc_loongarch64_unknown_linux_ext_dep.yaml b/BaseTools/Bin/gcc_loongarch64_unknown_linux_ext_dep.yaml
new file mode 100644
index 0000000000..ac18438080
--- /dev/null
+++ b/BaseTools/Bin/gcc_loongarch64_unknown_linux_ext_dep.yaml
@@ -0,0 +1,22 @@
+## @file
+# Download GCC LoongArch64 compiler from LoongArch GitHub release site
+# Set shell variable GCC5_LOONGARCH64_INSTALL to this folder
+#
+# This is only downloaded when a build activates scope gcc_loongarch64_unknown_linux
+#
+# Copyright (c) Microsoft Corporation.
+# Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+##
+{
+  "scope": "gcc_loongarch64_unknown_linux",
+  "type": "web",
+  "name": "gcc_loongarch64_unknown_linux",
+  "source":"https://github.com/loongson/build-tools/releases/download/2022.09.06/loongarch64-clfs-6.3-cross-tools-gcc-full.tar.xz",
+  "version": "13.0.0",
+  "sha256":"27a43c5bb127794f091d0e75da0003c4d0eec28a958d8f2cc7cd290a6e6133ab",
+  "compression_type": "tar",
+  "internal_path": "/cross-tools/",
+  "flags": ["set_shell_var", ],
+  "var_name": "GCC5_LOONGARCH64_INSTALL"
+}
diff --git a/BaseTools/Plugin/LinuxGcc5ToolChain/LinuxGcc5ToolChain.py b/BaseTools/Plugin/LinuxGcc5ToolChain/LinuxGcc5ToolChain.py
index f0685d8040..dab7a87997 100644
--- a/BaseTools/Plugin/LinuxGcc5ToolChain/LinuxGcc5ToolChain.py
+++ b/BaseTools/Plugin/LinuxGcc5ToolChain/LinuxGcc5ToolChain.py
@@ -5,6 +5,7 @@
 #
 # Copyright (c) Microsoft Corporation
 # Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+# Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 ##
 import os
@@ -43,6 +44,12 @@ class LinuxGcc5ToolChain(IUefiBuildPlugin):
                 self.Logger.critical("Failed in check riscv64")
                 return ret
 
+            # Check LoongArch64 compiler
+            ret = self._check_loongarch64()
+            if ret != 0:
+                self.Logger.critical("Failed in check loongarch64")
+                return ret
+
         return 0
 
     def _check_arm(self):
@@ -121,3 +128,27 @@ class LinuxGcc5ToolChain(IUefiBuildPlugin):
         shell_environment.GetEnvironment().set_shell_var("LD_LIBRARY_PATH", prefix)
 
         return 0
+
+    def _check_loongarch64(self):
+        # check to see if full path already configured
+        if shell_environment.GetEnvironment().get_shell_var("GCC5_LOONGARCH64_PREFIX") is not None:
+            self.Logger.info("GCC5_LOONGARCH64_PREFIX is already set.")
+
+        else:
+            # now check for install dir.  If set then set the Prefix
+            install_path = shell_environment.GetEnvironment(
+            ).get_shell_var("GCC5_LOONGARCH64_INSTALL")
+            if install_path is None:
+                return 0
+
+            # make GCC5_LOONGARCH64_PREFIX to align with tools_def.txt
+            prefix = os.path.join(install_path, "bin", "loongarch64-unknown-linux-gnu-")
+            shell_environment.GetEnvironment().set_shell_var("GCC5_LOONGARCH64_PREFIX", prefix)
+
+        # now confirm it exists
+        if not os.path.exists(shell_environment.GetEnvironment().get_shell_var("GCC5_LOONGARCH64_PREFIX") + "gcc"):
+            self.Logger.error(
+                "Path for GCC5_LOONGARCH64_PREFIX toolchain is invalid")
+            return -2
+
+        return 0
-- 
2.27.0