/*
 * Copyright (C) 2013 INRIA
 *               2014 Freie Universität Berlin
 *               2016 TriaGnoSys GmbH
 *               2018 Kaspar Schleiser <kaspar@schleiser.de>
 *               2018 OTA keys S.A.
 *
 *
 * This file is subject to the terms and conditions of the GNU Lesser General
 * Public License v2.1. See the file LICENSE in the top level directory for more
 * details.
 */

/**
 * @ingroup     cpu_stm32_common
 * @{
 *
 * @file
 * @brief       Implementation of the kernel cpu functions
 *
 * @author      Stefan Pfeiffer <stefan.pfeiffer@fu-berlin.de>
 * @author      Alaeddine Weslati <alaeddine.weslati@inria.fr>
 * @author      Thomas Eichinger <thomas.eichinger@fu-berlin.de>
 * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
 * @author      Nick van IJzendoorn <nijzendoorn@engineering-spirit.nl>
 * @author      Víctor Ariño <victor.arino@zii.aero>
 * @author      Kaspar Schleiser <kaspar@schleiser.de>
 * @author      Vincent Dupont <vincent@otakeys.com>
 *
 * @}
 */

#include "cpu.h"
#include "stmclk.h"
#include "periph_cpu.h"
#include "periph/init.h"

#if defined (CPU_FAM_STM32L4)
#define BIT_APB_PWREN       RCC_APB1ENR1_PWREN
#else
#define BIT_APB_PWREN       RCC_APB1ENR_PWREN
#endif

void cpu_init(void)
{
    /* initialize the Cortex-M core */
    cortexm_init();
    /* enable PWR module */
    periph_clk_en(APB1, BIT_APB_PWREN);
    /* initialize the system clock as configured in the periph_conf.h */
    stmclk_init_sysclk();
#ifdef MODULE_PERIPH_DMA
    /*  initialize DMA streams */
    dma_init();
#endif
    /* trigger static peripheral initialization */
    periph_init();
}