1 | /* |
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2 | * This routine 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 this routine is invoked. |
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6 | * |
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7 | * COPYRIGHT (c) 1989-1998. |
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8 | * On-Line Applications Research Corporation (OAR). |
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9 | * Copyright assigned to U.S. Government, 1994. |
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10 | * |
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11 | * The license and distribution terms for this file may be |
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12 | * found in the file LICENSE in this distribution or at |
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13 | * http://www.OARcorp.com/rtems/license.html. |
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14 | * |
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15 | * Ported to the i386ex and submitted by: |
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16 | * |
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17 | * Erik Ivanenko |
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18 | * University of Toronto |
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19 | * erik.ivanenko@utoronto.ca |
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20 | * |
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21 | * $Id$ |
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22 | */ |
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23 | |
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24 | #include <bsp.h> |
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25 | #include <rtems/libio.h> |
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26 | |
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27 | #include <libcsupport.h> |
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28 | |
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29 | #ifdef STACK_CHECKER_ON |
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30 | #include <stackchk.h> |
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31 | #endif |
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32 | |
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33 | /* |
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34 | * The original table from the application and our copy of it with |
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35 | * some changes. |
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36 | */ |
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37 | |
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38 | extern rtems_configuration_table Configuration; |
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39 | rtems_configuration_table BSP_Configuration; |
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40 | |
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41 | rtems_cpu_table Cpu_table; |
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42 | |
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43 | /* |
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44 | * Tells us where to put the workspace in case remote debugger is present. |
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45 | */ |
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46 | |
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47 | extern rtems_unsigned32 rdb_start; |
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48 | |
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49 | /* |
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50 | * bsp_libc_init |
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51 | * |
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52 | * Initialize whatever libc we are using called from bsp_postdriver_hook. |
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53 | */ |
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54 | |
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55 | |
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56 | void bsp_libc_init() |
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57 | { |
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58 | extern int heap_bottom; |
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59 | rtems_unsigned32 heap_start; |
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60 | rtems_unsigned32 heap_size; |
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61 | |
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62 | heap_start = (rtems_unsigned32) &heap_bottom; |
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63 | if (heap_start & (CPU_ALIGNMENT-1)) |
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64 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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65 | |
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66 | heap_size = BSP_Configuration.work_space_start -(void *) heap_start ; |
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67 | heap_size &= 0xfffffff0; /* keep it as a multiple of 16 bytes */ |
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68 | |
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69 | heap_size &= 0xfffffff0; /* keep it as a multiple of 16 bytes */ |
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70 | RTEMS_Malloc_Initialize((void *) heap_start, heap_size, 0); |
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71 | |
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72 | /* |
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73 | * Init the RTEMS libio facility to provide UNIX-like system |
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74 | * calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc) |
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75 | * Uses malloc() to get area for the iops, so must be after malloc init |
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76 | */ |
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77 | |
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78 | rtems_libio_init(); |
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79 | |
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80 | /* |
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81 | * Set up for the libc handling. |
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82 | */ |
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83 | |
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84 | if (BSP_Configuration.ticks_per_timeslice > 0) |
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85 | libc_init(1); /* reentrant if possible */ |
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86 | else |
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87 | libc_init(0); /* non-reentrant */ |
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88 | } |
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89 | |
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90 | /* |
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91 | * Function: bsp_pretasking_hook |
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92 | * Created: 95/03/10 |
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93 | * |
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94 | * Description: |
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95 | * BSP pretasking hook. Called just before drivers are initialized. |
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96 | * Used to setup libc and install any BSP extensions. |
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97 | * |
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98 | * NOTES: |
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99 | * Must not use libc (to do io) from here, since drivers are |
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100 | * not yet initialized. |
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101 | * |
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102 | */ |
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103 | |
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104 | void |
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105 | bsp_pretasking_hook(void) |
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106 | { |
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107 | bsp_libc_init(); |
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108 | |
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109 | #ifdef STACK_CHECKER_ON |
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110 | /* |
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111 | * Initialize the stack bounds checker |
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112 | * We can either turn it on here or from the app. |
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113 | */ |
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114 | |
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115 | Stack_check_Initialize(); |
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116 | #endif |
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117 | |
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118 | #ifdef RTEMS_DEBUG |
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119 | rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); |
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120 | #endif |
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121 | } |
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122 | |
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123 | |
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124 | /* |
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125 | * Use the shared bsp_postdriver_hook() implementation |
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126 | */ |
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127 | |
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128 | void bsp_postdriver_hook(void); |
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129 | |
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130 | void bsp_start( void ) |
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131 | { |
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132 | /* |
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133 | * we do not use the pretasking_hook. |
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134 | */ |
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135 | |
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136 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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137 | |
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138 | Cpu_table.predriver_hook = NULL; |
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139 | |
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140 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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141 | |
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142 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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143 | |
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144 | Cpu_table.do_zero_of_workspace = TRUE; |
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145 | |
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146 | Cpu_table.interrupt_table_segment = get_ds(); |
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147 | |
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148 | Cpu_table.interrupt_table_offset = (void *)Interrupt_descriptor_table; |
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149 | |
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150 | Cpu_table.interrupt_stack_size = 4096; /* STACK_MINIMUM_SIZE */ |
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151 | |
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152 | Cpu_table.extra_mpci_receive_server_stack = 0; |
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153 | |
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154 | /* |
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155 | * Copy the table |
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156 | */ |
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157 | |
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158 | BSP_Configuration = Configuration; |
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159 | |
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160 | #if defined(RTEMS_POSIX_API) |
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161 | BSP_Configuration.work_space_size *= 3; |
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162 | #endif |
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163 | |
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164 | BSP_Configuration.work_space_start = (void *) |
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165 | RAM_END - BSP_Configuration.work_space_size; |
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166 | |
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167 | /* |
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168 | * Account for the console's resources |
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169 | */ |
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170 | |
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171 | /* console_reserve_resources( &BSP_Configuration ); */ |
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172 | |
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173 | |
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174 | /* |
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175 | * Tell libio how many fd's we want and allow it to tweak config |
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176 | */ |
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177 | |
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178 | rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS); |
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179 | |
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180 | } |
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