source: rtems/bsps/arm/lpc176x/start/bspstart.c

Last change on this file was ba619b7f, checked in by Joel Sherrill <joel@…>, on 03/01/22 at 21:38:20

bsps/arm/: Scripted embedded brains header file clean up

Updates #4625.

  • Property mode set to 100644
File size: 1.9 KB
Line 
1/**
2 * @file
3 *
4 * @ingroup RTEMSBSPsARMLPC176X
5 *
6 * @brief Startup code.
7 */
8
9/*
10 * Copyright (c) 2008-2012 embedded brains GmbH.  All rights reserved.
11 *
12 * The license and distribution terms for this file may be
13 * found in the file LICENSE in this distribution or at
14 * http://www.rtems.org/license/LICENSE.
15 */
16
17#include <bsp.h>
18#include <bsp/io.h>
19#include <bsp/irq.h>
20#include <bsp/dma.h>
21#include <bsp/bootcard.h>
22#include <bsp/timer.h>
23#include <bsp/irq-generic.h>
24#include <bsp/system-clocks.h>
25#include <bsp/linker-symbols.h>
26#include <bsp/common-types.h>
27#include <bsp/uart-output-char.h>
28
29#ifdef LPC176X_HEAP_EXTEND
30LINKER_SYMBOL( lpc176x_region_heap_0_begin );
31LINKER_SYMBOL( lpc176x_region_heap_0_size );
32LINKER_SYMBOL( lpc176x_region_heap_0_end );
33LINKER_SYMBOL( lpc176x_region_heap_1_begin );
34LINKER_SYMBOL( lpc176x_region_heap_1_size );
35LINKER_SYMBOL( lpc176x_region_heap_1_end );
36extern Heap_Control *RTEMS_Malloc_Heap;
37#endif
38
39static void heap_extend( void )
40{
41#ifdef LPC176X_HEAP_EXTEND
42  _Heap_Extend( RTEMS_Malloc_Heap,
43    lpc176x_region_heap_0_begin,
44    (uintptr_t) lpc176x_region_heap_0_size,
45    NULL );
46  _Heap_Extend( RTEMS_Malloc_Heap,
47    lpc176x_region_heap_1_begin,
48    (uintptr_t) lpc176x_region_heap_1_size,
49    NULL );
50#endif
51}
52
53/**
54 * @brief Console initialization
55 */
56static void initialize_console( void )
57{
58#ifdef LPC176X_CONFIG_CONSOLE
59
60  lpc176x_module_enable( LPC176X_MODULE_UART_0, LPC176X_MODULE_PCLK_DEFAULT );
61
62  lpc176x_pin_select( LPC176X_PIN_UART_0_TXD, LPC176X_PIN_FUNCTION_01 );
63  lpc176x_pin_select( LPC176X_PIN_UART_0_RXD, LPC176X_PIN_FUNCTION_01 );
64
65  BSP_CONSOLE_UART_INIT( LPC176X_PCLK / 16 / LPC176X_UART_BAUD );
66#endif
67}
68
69void bsp_start( void )
70{
71  /* Initialize console */
72  initialize_console();
73
74  /*Initialize timer*/
75  lpc176x_timer_init( LPC176X_TIMER_1 );
76  lpc176x_timer_start( LPC176X_TIMER_1 );
77
78  /* Interrupts */
79  bsp_interrupt_initialize();
80
81  /* DMA */
82  lpc176x_dma_initialize();
83
84  heap_extend();
85}
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