1 files changed, 37 insertions, 0 deletions
diff --git a/rom_access_library/library/rom/src/ss_sm_checksum.cpp b/rom_access_library/library/rom/src/ss_sm_checksum.cpp
new file mode 100644
index 00000000..39a087ae
--- /dev/null
+++ b/rom_access_library/library/rom/src/ss_sm_checksum.cpp
@@ -0,0 +1,37 @@
+/*
+ * @copyright Copyright (c) 2016-2019 TOYOTA MOTOR CORPORATION.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+///////////////////////////////////////////////////////////////////////////////
+/// \ingroup  tag_SystemManager
+/// \brief    This file provides for checksum calculation.
+///
+///////////////////////////////////////////////////////////////////////////////
+#include "ss_sm_checksum.h"
+
+CSMChecksum::CSMChecksum() {}
+CSMChecksum::~CSMChecksum() {}
+UI_32 CSMChecksum::cal_checksum(const void* p_buf, size_t bufSize) {
+  size_t num;
+  UI_32 sum = 0;
+  const UI_32 *p_calcBuf = reinterpret_cast<const UI_32 *>(p_buf);
+  num = bufSize / sizeof(UI_32);
+
+  for (size_t i = 0; i < num; i++) {
+    sum += p_calcBuf[i];
+  }
+  return sum;
+}
+