lpc176x/start/bspstart.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSBSPsARMLPC176X
0007  *
0008  * @brief Startup code.
0009  */
0010
0011 /*
0012  * Copyright (C) 2008, 2012 embedded brains GmbH & Co. KG
0013  *
0014  * Redistribution and use in source and binary forms, with or without
0015  * modification, are permitted provided that the following conditions
0016  * are met:
0017  * 1. Redistributions of source code must retain the above copyright
0018  *    notice, this list of conditions and the following disclaimer.
0019  * 2. Redistributions in binary form must reproduce the above copyright
0020  *    notice, this list of conditions and the following disclaimer in the
0021  *    documentation and/or other materials provided with the distribution.
0022  *
0023  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0024  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0025  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0026  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0027  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0028  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0029  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0030  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0031  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0032  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0033  * POSSIBILITY OF SUCH DAMAGE.
0034  */
0035
0036 #include <bsp.h>
0037 #include <bsp/io.h>
0038 #include <bsp/irq.h>
0039 #include <bsp/dma.h>
0040 #include <bsp/bootcard.h>
0041 #include <bsp/timer.h>
0042 #include <bsp/irq-generic.h>
0043 #include <bsp/system-clocks.h>
0044 #include <bsp/linker-symbols.h>
0045 #include <bsp/common-types.h>
0046 #include <bsp/uart-output-char.h>
0047
0048 #ifdef LPC176X_HEAP_EXTEND
0049 LINKER_SYMBOL( lpc176x_region_heap_0_begin );
0050 LINKER_SYMBOL( lpc176x_region_heap_0_size );
0051 LINKER_SYMBOL( lpc176x_region_heap_0_end );
0052 LINKER_SYMBOL( lpc176x_region_heap_1_begin );
0053 LINKER_SYMBOL( lpc176x_region_heap_1_size );
0054 LINKER_SYMBOL( lpc176x_region_heap_1_end );
0055 extern Heap_Control *RTEMS_Malloc_Heap;
0056 #endif
0057
0058 static void heap_extend( void )
0059 {
0060 #ifdef LPC176X_HEAP_EXTEND
0061   _Heap_Extend( RTEMS_Malloc_Heap,
0062     lpc176x_region_heap_0_begin,
0063     (uintptr_t) lpc176x_region_heap_0_size,
0064     NULL );
0065   _Heap_Extend( RTEMS_Malloc_Heap,
0066     lpc176x_region_heap_1_begin,
0067     (uintptr_t) lpc176x_region_heap_1_size,
0068     NULL );
0069 #endif
0070 }
0071
0072 /**
0073  * @brief Console initialization
0074  */
0075 static void initialize_console( void )
0076 {
0077 #ifdef LPC176X_CONFIG_CONSOLE
0078
0079   lpc176x_module_enable( LPC176X_MODULE_UART_0, LPC176X_MODULE_PCLK_DEFAULT );
0080
0081   lpc176x_pin_select( LPC176X_PIN_UART_0_TXD, LPC176X_PIN_FUNCTION_01 );
0082   lpc176x_pin_select( LPC176X_PIN_UART_0_RXD, LPC176X_PIN_FUNCTION_01 );
0083
0084   BSP_CONSOLE_UART_INIT( LPC176X_PCLK / 16 / LPC176X_UART_BAUD );
0085 #endif
0086 }
0087
0088 void bsp_start( void )
0089 {
0090   /* Initialize console */
0091   initialize_console();
0092
0093   /*Initialize timer*/
0094   lpc176x_timer_init( LPC176X_TIMER_1 );
0095   lpc176x_timer_start( LPC176X_TIMER_1 );
0096
0097   /* Interrupts */
0098   bsp_interrupt_initialize();
0099
0100   /* DMA */
0101   lpc176x_dma_initialize();
0102
0103   heap_extend();
0104 }