[Feature]add MT2731_MP2_MR2_SVN388 baseline version

Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/bsp/lk/lib/libavb/avb_sha256.c b/src/bsp/lk/lib/libavb/avb_sha256.c
new file mode 100644
index 0000000..04392dd
--- /dev/null
+++ b/src/bsp/lk/lib/libavb/avb_sha256.c
@@ -0,0 +1,61 @@
+/* SHA-256 and SHA-512 implementation based on code by Oliver Gay
+ * <olivier.gay@a3.epfl.ch> under a BSD-style license. See below.
+ */
+
+/*
+ * FIPS 180-2 SHA-224/256/384/512 implementation
+ * Last update: 02/02/2007
+ * Issue date:  04/30/2005
+ *
+ * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include "avb_sha.h"
+#include "avb_util.h"
+#include "sha256.h"
+/* SHA-256 implementation */
+void avb_sha256_init(AvbSHA256Ctx* ctx) {
+    struct sha256_context* s_ctx = (struct sha256_context*)ctx;
+    if(sizeof(struct sha256_context)>sizeof(AvbSHA256Ctx))
+    {
+        avb_print("ERROR:sizeof(struct sha256_context)>sizeof(AvbSHA256Ctx)\n");
+        while(1);
+    }
+    avb_memset(s_ctx, 0, sizeof(struct sha256_context));
+    sha256_start(s_ctx);
+}
+
+void avb_sha256_update(AvbSHA256Ctx* ctx, const uint8_t* data, uint32_t len) {
+    sha256_process((struct sha256_context*)ctx,data,len);
+}
+
+uint8_t* avb_sha256_final(AvbSHA256Ctx* ctx) {
+  uint8_t* output = avb_malloc(AVB_SHA256_DIGEST_SIZE);
+  sha256_end((struct sha256_context*)ctx,output);
+  return output;
+}
+