From f62c3d756917295146d415fcba7b5208c13874f7 Mon Sep 17 00:00:00 2001
From: Kristofer Jonsson <kristofer.jonsson@arm.com>
Date: Thu, 21 Jan 2021 17:39:03 +0100
Subject: Build system refactoring

The source tree is configured for a specific target as defined in the
targets directory.

The common target components are defined in targets/common. Targets
for real platform should include this directory to get the default
target libraries setup.

Change-Id: I7fced4bfacec97432cbbd4125bd5b4cdd21122e3
---
 targets/corstone-300/target.cpp | 109 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 targets/corstone-300/target.cpp

(limited to 'targets/corstone-300/target.cpp')

diff --git a/targets/corstone-300/target.cpp b/targets/corstone-300/target.cpp
new file mode 100644
index 0000000..3d18680
--- /dev/null
+++ b/targets/corstone-300/target.cpp
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2020 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
+ *
+ * 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.
+ */
+
+/****************************************************************************
+ * Includes
+ ****************************************************************************/
+
+#include "target.hpp"
+
+#ifdef ETHOSU
+#include <ethosu_driver.h>
+#endif
+
+#include "uart.h"
+
+#include <stdio.h>
+
+using namespace EthosU;
+
+/****************************************************************************
+ * Defines
+ ****************************************************************************/
+
+#define ETHOSU_BASE_ADDRESS 0x48102000
+
+#define ETHOSU_IRQ 56
+
+/****************************************************************************
+ * Variables
+ ****************************************************************************/
+
+#if defined(ETHOSU_FAST_MEMORY_SIZE) && ETHOSU_FAST_MEMORY_SIZE > 0
+__attribute__((aligned(16), section(".bss.ethosu_scratch"))) uint8_t ethosu_scratch[ETHOSU_FAST_MEMORY_SIZE];
+#else
+#define ethosu_scratch          0
+#define ETHOSU_FAST_MEMORY_SIZE 0
+#endif
+
+/****************************************************************************
+ * Cache maintenance
+ ****************************************************************************/
+
+#if defined(CPU_CACHE_ENABLE) && defined(__DCACHE_PRESENT) && (__DCACHE_PRESENT == 1U)
+extern "C" {
+void ethosu_flush_dcache(uint32_t *p, size_t bytes) {
+    if (p)
+        SCB_CleanDCache_by_Addr(p, bytes);
+    else
+        SCB_CleanDCache();
+}
+
+void ethosu_invalidate_dcache(uint32_t *p, size_t bytes) {
+    if (p)
+        SCB_InvalidateDCache_by_Addr(p, bytes);
+    else
+        SCB_InvalidateDCache();
+}
+}
+#endif
+
+/****************************************************************************
+ * Init
+ ****************************************************************************/
+
+namespace {
+
+#ifdef ETHOSU
+void ethosuIrqHandler() {
+    ethosu_irq_handler();
+}
+#endif
+
+} // namespace
+
+namespace EthosU {
+
+void targetSetup() {
+    // Initialize UART driver
+    uart_init();
+
+#ifdef ETHOSU
+    // Initialize Ethos-U NPU driver
+    if (ethosu_init_v3(reinterpret_cast<void *>(ETHOSU_BASE_ADDRESS), ethosu_scratch, ETHOSU_FAST_MEMORY_SIZE, 1, 1)) {
+        printf("Failed to initialize NPU.\n");
+        return;
+    }
+
+    /* Assumes SCB->VTOR point to RW memory */
+    NVIC_SetVector(static_cast<IRQn_Type>(ETHOSU_IRQ), (uint32_t)&ethosuIrqHandler);
+    NVIC_EnableIRQ(static_cast<IRQn_Type>(ETHOSU_IRQ));
+#endif
+}
+
+} // namespace EthosU
-- 
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