/**************************************************************************** * configs/efm32-g8xx-stk/src/efm32_boot.c * * Copyright (C) 2014 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include "efm32_gpio.h" #include "efm32_start.h" #include "efm32-g8xx-stk.h" /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: efm32_boardinitialize * * Description: * All EFM32 architectures must provide the following entry point. This * entry point is called early in the initialization before any devices * have been initialized. * ****************************************************************************/ void efm32_boardinitialize(void) { #ifdef CONFIG_EFM32_UART0 /* The control MCU acts as a board controller (BC). There is a UART * connection between the EFM and the BC. The connection is made by * setting the EFM_BC_EN (PD13) line high. The EFM can then use the BSP to * send commands to the BC. When EFM_BC_EN is low, EFM_BC_TX and EFM_BC_RX * can be used by other applications. */ efm32_configgpio(GPIO_BC_EN); #endif #ifdef CONFIG_ARCH_LEDS /* Configure on-board LEDs if LED support has been selected. */ board_autoled_initialize(); #endif } /**************************************************************************** * Name: board_initialize * * Description: * If CONFIG_BOARD_INITIALIZE is selected, then an additional * initialization call will be performed in the boot-up sequence to a * function called board_initialize(). board_initialize() will be * called immediately after up_initialize() is called and just before the * initial application is started. This additional initialization phase * may be used, for example, to initialize board-specific device drivers. * ****************************************************************************/ #ifdef CONFIG_BOARD_INITIALIZE void board_initialize(void) { } #endif