lpc24xx/start/bspstart.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSBSPsARMLPC24XX
0007  *
0008  * @brief Startup code.
0009  */
0010
0011 /*
0012  * Copyright (C) 2008, 2014 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/bootcard.h>
0038 #include <bsp/dma.h>
0039 #include <bsp/io.h>
0040 #include <bsp/irq-generic.h>
0041 #include <bsp/irq.h>
0042 #include <bsp/linker-symbols.h>
0043 #include <bsp/lpc24xx.h>
0044 #include <bsp/system-clocks.h>
0045 #include <bsp/uart-output-char.h>
0046
0047 #ifdef LPC24XX_HEAP_EXTEND
0048   LINKER_SYMBOL(lpc24xx_region_heap_0_begin);
0049   LINKER_SYMBOL(lpc24xx_region_heap_0_size);
0050   LINKER_SYMBOL(lpc24xx_region_heap_0_end);
0051
0052   LINKER_SYMBOL(lpc24xx_region_heap_1_begin);
0053   LINKER_SYMBOL(lpc24xx_region_heap_1_size);
0054   LINKER_SYMBOL(lpc24xx_region_heap_1_end);
0055
0056   extern Heap_Control *RTEMS_Malloc_Heap;
0057 #endif
0058
0059 static void heap_extend(void)
0060 {
0061   #ifdef LPC24XX_HEAP_EXTEND
0062     _Heap_Extend(
0063       RTEMS_Malloc_Heap,
0064       lpc24xx_region_heap_0_begin,
0065       (uintptr_t) lpc24xx_region_heap_0_size,
0066       0
0067     );
0068     _Heap_Extend(
0069       RTEMS_Malloc_Heap,
0070       lpc24xx_region_heap_1_begin,
0071       (uintptr_t) lpc24xx_region_heap_1_size,
0072       0
0073     );
0074   #endif
0075 }
0076
0077 static void initialize_console(void)
0078 {
0079   #ifdef LPC24XX_CONFIG_CONSOLE
0080     static const lpc24xx_pin_range pins [] = {
0081       LPC24XX_PIN_UART_0_TXD,
0082       LPC24XX_PIN_UART_0_RXD,
0083       LPC24XX_PIN_TERMINAL
0084     };
0085
0086     lpc24xx_module_enable(LPC24XX_MODULE_UART_0, LPC24XX_MODULE_PCLK_DEFAULT);
0087     lpc24xx_pin_config(&pins [0], LPC24XX_PIN_SET_FUNCTION);
0088     BSP_CONSOLE_UART_INIT(LPC24XX_PCLK / 16 / LPC24XX_UART_BAUD);
0089   #endif
0090 }
0091
0092 void bsp_start(void)
0093 {
0094   /* Initialize Timer 1 */
0095   lpc24xx_module_enable(LPC24XX_MODULE_TIMER_1, LPC24XX_MODULE_PCLK_DEFAULT);
0096
0097   /* Initialize standard timer */
0098   lpc24xx_timer_initialize();
0099
0100   initialize_console();
0101
0102   /* Interrupts */
0103   bsp_interrupt_initialize();
0104
0105   /* DMA */
0106   lpc24xx_dma_initialize();
0107
0108   heap_extend();
0109 }