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58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
/*
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* Copyright (C) 2021 Mesotic SAS
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup cpu_nrf9160
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* @{
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*
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* @file
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* @brief Implementation of the CPU initialization
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*
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* @author Dylan Laduranty <dylan.laduranty@mesotic.com>
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*
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* @}
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*/
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#include "cpu.h"
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#include "kernel_init.h"
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#include "nrf_clock.h"
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#include "periph_conf.h"
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#include "periph/init.h"
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#include "stdio_base.h"
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/**
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* @brief LFCLK Clock selection configuration guard
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*/
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#if ((CLOCK_LFCLK != CLOCK_LFCLKSRC_SRC_LFRC) && \
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(CLOCK_LFCLK != CLOCK_LFCLKSRC_SRC_LFXO))
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#error "LFCLK init: CLOCK_LFCLK has invalid value"
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#endif
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/**
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* @brief Initialize the CPU, set IRQ priorities
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*/
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void cpu_init(void)
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{
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/* initialize hf clock */
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clock_init_hf();
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#ifdef NVMC_ICACHECNF_CACHEEN_Msk
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/* enable instruction cache */
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NRF_NVMC_S->ICACHECNF = (NVMC_ICACHECNF_CACHEEN_Msk);
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#endif
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/* call cortexm default initialization */
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cortexm_init();
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/* initialize stdio prior to periph_init() to allow use of DEBUG() there */
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early_init();
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/* trigger static peripheral initialization */
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periph_init();
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}
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