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targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/device/system_init_pre.c
- Committer:
- <>
- Date:
- 2017-03-14
- Revision:
- 160:d5399cc887bb
- Parent:
- 158:b23ee177fd68
File content as of revision 160:d5399cc887bb:
/* * Copyright (c) 2015-2015, 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. */ #include "stm32f4xx.h" #include "nvic_addr.h" /*!< Uncomment the following line if you need to relocate your vector Table in Internal SRAM. */ /* note: if uVisor is present the definition must go in system_init_pre.c */ /* #define VECT_TAB_SRAM */ #define VECT_TAB_OFFSET 0x00 /*!< Vector Table base offset field. This value must be a multiple of 0x200. */ /* this function is needed to peform hardware initialization that must happen * before the uVisor; the whole SystemInit function for the STM32F4 cannot be * put here as it depends on some APIs that need uVisor to be enabled */ void SystemInitPre(void) { /* FPU settings ------------------------------------------------------------*/ #if (__FPU_PRESENT == 1) && (__FPU_USED == 1) SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); /* set CP10 and CP11 Full Access */ #endif /* Configure the Vector Table location add offset address ------------------*/ #ifdef VECT_TAB_SRAM SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */ #else SCB->VTOR = NVIC_FLASH_VECTOR_ADDRESS; /* Vector Table Relocation in Internal FLASH */ #endif }