From 344dc4b9d3c29965ecc92686f9f7a7e2e69c6576 Mon Sep 17 00:00:00 2001
From: Chao Li <lichao@loongson.cn>
Date: Thu, 2 Nov 2023 20:29:41 +0800
Subject: MdePkg: Add LoongArch Cpucfg function

Add LoongArch AsmCpucfg function and Cpucfg definitions.

Also added Include/Register/LoongArch64/Cpucfg.h to IgnoreFiles of
EccCheck.

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Signed-off-by: Chao Li <lichao@loongson.cn>
Acked-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
---
 MdePkg/Library/BaseLib/BaseLib.inf          |  1 +
 MdePkg/Library/BaseLib/LoongArch64/Cpucfg.S | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 MdePkg/Library/BaseLib/LoongArch64/Cpucfg.S

(limited to 'MdePkg/Library')

diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf
index 22b38b59e7..2f1e3b3d91 100644
--- a/MdePkg/Library/BaseLib/BaseLib.inf
+++ b/MdePkg/Library/BaseLib/BaseLib.inf
@@ -421,6 +421,7 @@
   LoongArch64/SetJumpLongJump.S     | GCC
   LoongArch64/SwitchStack.S         | GCC
   LoongArch64/ExceptionBase.S       | GCC
+  LoongArch64/Cpucfg.S              | GCC
 
 [Packages]
   MdePkg/MdePkg.dec
diff --git a/MdePkg/Library/BaseLib/LoongArch64/Cpucfg.S b/MdePkg/Library/BaseLib/LoongArch64/Cpucfg.S
new file mode 100644
index 0000000000..8b3f842f9e
--- /dev/null
+++ b/MdePkg/Library/BaseLib/LoongArch64/Cpucfg.S
@@ -0,0 +1,26 @@
+#------------------------------------------------------------------------------
+#
+# AsmCpucfg for LoongArch
+#
+# Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#------------------------------------------------------------------------------
+
+ASM_GLOBAL ASM_PFX(AsmCpucfg)
+
+#/**
+#  Read CPUCFG register.
+#
+#  @param   a0 Specifies the register number of the CPUCFG to read the data.
+#  @param   a1 Pointer to the variable used to store the CPUCFG register value.
+#
+#**/
+
+ASM_PFX(AsmCpucfg):
+  cpucfg  $t0, $a0
+  stptr.d $t0, $a1, 0
+
+  jirl    $zero, $ra, 0
+  .end
-- 
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