77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
/*
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* Copyright (c) 2016 Nordic Semiconductor ASA
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* Copyright (c) 2016 Linaro Limited
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief System/hardware module for Nordic Semiconductor nRF51 family processor
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*
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* This module provides routines to initialize and support board-level hardware
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* for the Nordic Semiconductor nRF51 family processor.
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*/
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#include <kernel.h>
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#include <init.h>
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#include <hal/nrf_power.h>
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#include <soc/nrfx_coredep.h>
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#include <logging/log.h>
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#ifdef CONFIG_RUNTIME_NMI
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extern void z_arm_nmi_init(void);
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#define NMI_INIT() z_arm_nmi_init()
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#else
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#define NMI_INIT()
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#endif
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#include <system_nrf51.h>
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#define LOG_LEVEL CONFIG_SOC_LOG_LEVEL
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LOG_MODULE_REGISTER(soc);
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/* Overrides the weak ARM implementation:
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Set general purpose retention register and reboot */
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void sys_arch_reboot(int type)
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{
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nrf_power_gpregret_set(NRF_POWER, (uint8_t)type);
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NVIC_SystemReset();
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}
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static int nordicsemi_nrf51_init(const struct device *arg)
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{
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uint32_t key;
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ARG_UNUSED(arg);
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key = irq_lock();
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/* Install default handler that simply resets the CPU
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* if configured in the kernel, NOP otherwise
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*/
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NMI_INIT();
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irq_unlock(key);
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return 0;
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}
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#define DELAY_CALL_OVERHEAD_US 2
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void arch_busy_wait(uint32_t time_us)
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{
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if (time_us <= DELAY_CALL_OVERHEAD_US) {
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return;
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}
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time_us -= DELAY_CALL_OVERHEAD_US;
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nrfx_coredep_delay_us(time_us);
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}
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void z_platform_init(void)
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{
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SystemInit();
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}
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SYS_INIT(nordicsemi_nrf51_init, PRE_KERNEL_1, 0);
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