You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
854 B
40 lines
854 B
/* |
|
* Copyright (c) 2016 Open-RnD Sp. z o.o. |
|
* Copyright (c) 2016 Linaro Limited. |
|
* |
|
* SPDX-License-Identifier: Apache-2.0 |
|
*/ |
|
|
|
/** |
|
* @file |
|
* @brief System/hardware module for STM32F4 processor |
|
*/ |
|
|
|
#include <zephyr/device.h> |
|
#include <zephyr/init.h> |
|
|
|
#include <cmsis_core.h> |
|
#include <stm32_ll_system.h> |
|
|
|
/** |
|
* @brief Perform basic hardware initialization at boot. |
|
* |
|
* This needs to be run from the very beginning. |
|
* So the init priority has to be 0 (zero). |
|
* |
|
* @return 0 |
|
*/ |
|
static int st_stm32f4_init(void) |
|
{ |
|
/* Enable ART Flash cache accelerator for both instruction and data */ |
|
LL_FLASH_EnableInstCache(); |
|
LL_FLASH_EnableDataCache(); |
|
|
|
/* Update CMSIS SystemCoreClock variable (HCLK) */ |
|
/* At reset, system core clock is set to 16 MHz from HSI */ |
|
SystemCoreClock = 16000000; |
|
|
|
return 0; |
|
} |
|
|
|
SYS_INIT(st_stm32f4_init, PRE_KERNEL_1, 0);
|
|
|