| Kristofer Jonsson | f62c3d7 | 2021-01-21 17:39:03 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2020 Arm Limited. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: Apache-2.0 |
| 5 | * |
| 6 | * Licensed under the Apache License, Version 2.0 (the License); you may |
| 7 | * not use this file except in compliance with the License. |
| 8 | * You may obtain a copy of the License at |
| 9 | * |
| 10 | * www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, software |
| 13 | * distributed under the License is distributed on an AS IS BASIS, WITHOUT |
| 14 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | */ |
| 18 | |
| 19 | /**************************************************************************** |
| 20 | * Includes |
| 21 | ****************************************************************************/ |
| 22 | |
| 23 | #include "target.hpp" |
| 24 | |
| 25 | #ifdef ETHOSU |
| 26 | #include <ethosu_driver.h> |
| 27 | #endif |
| 28 | |
| 29 | #include "uart.h" |
| 30 | |
| 31 | #include <stdio.h> |
| 32 | |
| 33 | using namespace EthosU; |
| 34 | |
| 35 | /**************************************************************************** |
| 36 | * Defines |
| 37 | ****************************************************************************/ |
| 38 | |
| 39 | #define ETHOSU_BASE_ADDRESS 0x48102000 |
| 40 | |
| 41 | #define ETHOSU_IRQ 56 |
| 42 | |
| 43 | /**************************************************************************** |
| 44 | * Variables |
| 45 | ****************************************************************************/ |
| 46 | |
| 47 | #if defined(ETHOSU_FAST_MEMORY_SIZE) && ETHOSU_FAST_MEMORY_SIZE > 0 |
| 48 | __attribute__((aligned(16), section(".bss.ethosu_scratch"))) uint8_t ethosu_scratch[ETHOSU_FAST_MEMORY_SIZE]; |
| 49 | #else |
| 50 | #define ethosu_scratch 0 |
| 51 | #define ETHOSU_FAST_MEMORY_SIZE 0 |
| 52 | #endif |
| 53 | |
| 54 | /**************************************************************************** |
| 55 | * Cache maintenance |
| 56 | ****************************************************************************/ |
| 57 | |
| 58 | #if defined(CPU_CACHE_ENABLE) && defined(__DCACHE_PRESENT) && (__DCACHE_PRESENT == 1U) |
| 59 | extern "C" { |
| 60 | void ethosu_flush_dcache(uint32_t *p, size_t bytes) { |
| 61 | if (p) |
| 62 | SCB_CleanDCache_by_Addr(p, bytes); |
| 63 | else |
| 64 | SCB_CleanDCache(); |
| 65 | } |
| 66 | |
| 67 | void ethosu_invalidate_dcache(uint32_t *p, size_t bytes) { |
| 68 | if (p) |
| 69 | SCB_InvalidateDCache_by_Addr(p, bytes); |
| 70 | else |
| 71 | SCB_InvalidateDCache(); |
| 72 | } |
| 73 | } |
| 74 | #endif |
| 75 | |
| 76 | /**************************************************************************** |
| 77 | * Init |
| 78 | ****************************************************************************/ |
| 79 | |
| 80 | namespace { |
| 81 | |
| 82 | #ifdef ETHOSU |
| 83 | void ethosuIrqHandler() { |
| 84 | ethosu_irq_handler(); |
| 85 | } |
| 86 | #endif |
| 87 | |
| 88 | } // namespace |
| 89 | |
| 90 | namespace EthosU { |
| 91 | |
| 92 | void targetSetup() { |
| 93 | // Initialize UART driver |
| 94 | uart_init(); |
| 95 | |
| 96 | #ifdef ETHOSU |
| 97 | // Initialize Ethos-U NPU driver |
| 98 | if (ethosu_init_v3(reinterpret_cast<void *>(ETHOSU_BASE_ADDRESS), ethosu_scratch, ETHOSU_FAST_MEMORY_SIZE, 1, 1)) { |
| 99 | printf("Failed to initialize NPU.\n"); |
| 100 | return; |
| 101 | } |
| 102 | |
| 103 | /* Assumes SCB->VTOR point to RW memory */ |
| 104 | NVIC_SetVector(static_cast<IRQn_Type>(ETHOSU_IRQ), (uint32_t)ðosuIrqHandler); |
| 105 | NVIC_EnableIRQ(static_cast<IRQn_Type>(ETHOSU_IRQ)); |
| 106 | #endif |
| 107 | } |
| 108 | |
| 109 | } // namespace EthosU |