Opensource ML embedded evaluation kit
Change-Id: I12e807f19f5cacad7cef82572b6dd48252fd61fd
diff --git a/source/application/tensorflow-lite-micro/include/BufAttributes.hpp b/source/application/tensorflow-lite-micro/include/BufAttributes.hpp
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+/*
+ * Copyright (c) 2021 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+
+#ifndef BUF_ATTRIBUTES_HPP
+#define BUF_ATTRIBUTES_HPP
+
+#ifdef __has_attribute
+#define HAVE_ATTRIBUTE(x) __has_attribute(x)
+#else /* __has_attribute */
+#define HAVE_ATTRIBUTE(x) 0
+#endif /* __has_attribute */
+
+#if HAVE_ATTRIBUTE(aligned) || (defined(__GNUC__) && !defined(__clang__))
+
+/* We want all buffers/sections to be aligned to 16 byte. */
+#define ALIGNMENT_REQ aligned(16)
+
+/* Model data section name. */
+#define MODEL_SECTION section("nn_model")
+
+/* Label section name */
+#define LABEL_SECTION section("labels")
+
+#ifndef ACTIVATION_BUF_SZ
+ #warning "ACTIVATION_BUF_SZ needs to be defined. Using default value"
+ #define ACTIVATION_BUF_SZ 0x00200000
+#endif /* ACTIVATION_BUF_SZ */
+
+#ifndef ACTIVATION_BUF_SRAM_SZ
+ #warning "ACTIVATION_BUF_SRAM_SZ needs to be defined. Using default value = 0"
+ #define ACTIVATION_BUF_SRAM_SZ 0x00000000
+#endif /* ACTIVATION_BUF_SRAM_SZ */
+
+/**
+ * Activation buffer aka tensor arena section name
+ * We have to place the tensor arena in different region based on its size.
+ * If it fits in SRAM, we place it there, and also mark it by giving it a
+ * different section name. The scatter file places the ZI data in DDR and
+ * the uninitialised region in the SRAM.
+ **/
+#define ACTIVATION_BUF_SECTION_SRAM section(".bss.NoInit.activation_buf")
+#define ACTIVATION_BUF_SECTION_DRAM section("activation_buf")
+
+#if ACTIVATION_BUF_SZ > ACTIVATION_BUF_SRAM_SZ /* Will buffer not fit in SRAM? */
+ #define ACTIVATION_BUF_SECTION ACTIVATION_BUF_SECTION_DRAM
+ #define ACTIVATION_BUF_SECTION_NAME ("DDR")
+#else /* ACTIVATION_BUF_SZ > 0x00200000 */
+ #define ACTIVATION_BUF_SECTION ACTIVATION_BUF_SECTION_SRAM
+ #define ACTIVATION_BUF_SECTION_NAME ("SRAM")
+#endif /* ACTIVATION_BUF_SZ > 0x00200000 */
+
+/* IFM section name. */
+#define IFM_BUF_SECTION section("ifm")
+
+/* Form the attributes, alignment is mandatory. */
+#define MAKE_ATTRIBUTE(x) __attribute__((ALIGNMENT_REQ, x))
+#define MODEL_TFLITE_ATTRIBUTE MAKE_ATTRIBUTE(MODEL_SECTION)
+#define ACTIVATION_BUF_ATTRIBUTE MAKE_ATTRIBUTE(ACTIVATION_BUF_SECTION)
+#define IFM_BUF_ATTRIBUTE MAKE_ATTRIBUTE(IFM_BUF_SECTION)
+#define LABELS_ATTRIBUTE MAKE_ATTRIBUTE(LABEL_SECTION)
+
+#else /* HAVE_ATTRIBUTE(aligned) || (defined(__GNUC__) && !defined(__clang__)) */
+
+#define MODEL_TFLITE_ATTRIBUTE
+#define ACTIVATION_BUF_ATTRIBUTE
+#define IFM_BUF_ATTRIBUTE
+#define LABELS_ATTRIBUTE
+
+#endif /* HAVE_ATTRIBUTE(aligned) || (defined(__GNUC__) && !defined(__clang__)) */
+
+#endif /* BUF_ATTRIBUTES_HPP */
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