1 | /* |
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2 | * This set of routines starts the application. It includes application, |
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3 | * board, and monitor specific initialization and configuration. |
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4 | * The generic CPU dependent initialization has been performed |
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5 | * before any of these are invoked. |
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6 | * |
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7 | * COPYRIGHT (c) 1989-1999. |
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8 | * On-Line Applications Research Corporation (OAR). |
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9 | * |
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10 | * The license and distribution terms for this file may be |
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11 | * found in the file LICENSE in this distribution or at |
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12 | * http://www.OARcorp.com/rtems/license.html. |
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13 | * |
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14 | * $Id$ |
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15 | */ |
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16 | |
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17 | #include <string.h> |
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18 | |
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19 | #include <bsp.h> |
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20 | #include <rtems/libio.h> |
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21 | #include <rtems/libcsupport.h> |
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22 | |
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23 | /* |
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24 | * The original table from the application and our copy of it with |
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25 | * some changes. |
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26 | */ |
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27 | |
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28 | extern rtems_configuration_table Configuration; |
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29 | rtems_configuration_table BSP_Configuration; |
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30 | |
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31 | rtems_cpu_table Cpu_table; |
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32 | |
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33 | /* |
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34 | * Use the shared implementations of the following routines |
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35 | */ |
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36 | |
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37 | void bsp_postdriver_hook(void); |
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38 | void bsp_libc_init( void *, unsigned32, int ); |
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39 | extern void bsp_spurious_initialize(); |
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40 | |
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41 | /* |
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42 | * bsp_pretasking_hook |
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43 | * |
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44 | * BSP pretasking hook. Called just before drivers are initialized. |
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45 | * Used to setup libc and install any BSP extensions. |
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46 | */ |
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47 | |
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48 | void bsp_pretasking_hook(void) |
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49 | { |
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50 | extern void *_HeapStart; |
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51 | extern rtems_unsigned32 _HeapSize; |
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52 | |
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53 | bsp_libc_init(&_HeapStart, (unsigned int) &_HeapSize, 0); |
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54 | |
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55 | #ifdef RTEMS_DEBUG |
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56 | rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); |
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57 | #endif |
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58 | |
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59 | bsp_spurious_initialize(); |
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60 | } |
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61 | |
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62 | /* |
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63 | * bsp_start |
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64 | * |
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65 | * This routine does the bulk of the system initialization. |
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66 | */ |
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67 | |
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68 | #include <rtems/bspIo.h> |
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69 | |
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70 | BSP_output_char_function_type BSP_output_char; |
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71 | BSP_polling_getchar_function_type BSP_poll_char; |
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72 | extern void C4X_BSP_output_char(char c); |
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73 | |
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74 | void bsp_start( void ) |
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75 | { |
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76 | extern void *_WorkspaceBase; |
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77 | extern rtems_unsigned32 _WorkspaceMax; |
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78 | /* |
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79 | * Set up our hooks |
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80 | * Make sure libc_init is done before drivers initialized so that |
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81 | * they can use atexit() |
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82 | */ |
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83 | |
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84 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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85 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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86 | |
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87 | /* |
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88 | * SIS does zero out memory BUT only when IT begins execution. Thus |
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89 | * if we want to have a clean slate in the workspace each time we |
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90 | * begin execution of OUR application, then we must zero the workspace. |
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91 | */ |
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92 | Cpu_table.do_zero_of_workspace = FALSE; |
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93 | |
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94 | /* |
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95 | * This should be enough interrupt stack. |
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96 | */ |
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97 | |
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98 | Cpu_table.interrupt_stack_size = 0; |
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99 | |
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100 | BSP_Configuration.work_space_start = (void *)&_WorkspaceBase; |
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101 | /* XXX check to see if satisfying small memory model */ |
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102 | |
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103 | if ( BSP_Configuration.work_space_size > (int) &_WorkspaceMax ) |
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104 | rtems_fatal_error_occurred( 0x43218765 ); |
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105 | |
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106 | BSP_output_char = C4X_BSP_output_char; |
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107 | BSP_poll_char = (BSP_polling_getchar_function_type) NULL; |
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108 | } |
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