1 | /* bsp_start() |
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2 | * |
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3 | * This routine starts the application. It includes application, |
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4 | * board, and monitor specific initialization and configuration. |
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5 | * The generic CPU dependent initialization has been performed |
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6 | * before this routine is invoked. |
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7 | * |
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8 | * INPUT: NONE |
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9 | * |
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10 | * OUTPUT: NONE |
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11 | * |
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12 | * COPYRIGHT (c) 1989-1997. |
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13 | * On-Line Applications Research Corporation (OAR). |
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14 | * Copyright assigned to U.S. Government, 1994. |
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15 | * |
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16 | * The license and distribution terms for this file may be |
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17 | * found in the file LICENSE in this distribution or at |
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18 | * http://www.OARcorp.com/rtems/license.html. |
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19 | * |
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20 | * $Id$ |
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21 | */ |
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22 | |
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23 | #include <bsp.h> |
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24 | #include <rtems/libio.h> |
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25 | #include <libcsupport.h> |
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26 | |
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27 | #include <string.h> |
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28 | #include <fcntl.h> |
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29 | |
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30 | #ifdef STACK_CHECKER_ON |
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31 | #include <stackchk.h> |
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32 | #endif |
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33 | |
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34 | /* |
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35 | * The original table from the application and our copy of it with |
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36 | * some changes. |
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37 | */ |
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38 | |
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39 | extern rtems_configuration_table Configuration; |
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40 | rtems_configuration_table BSP_Configuration; |
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41 | |
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42 | rtems_cpu_table Cpu_table; |
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43 | |
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44 | char *rtems_progname; |
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45 | |
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46 | rtems_unsigned32 Timer_interrupts; |
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47 | |
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48 | extern void set_debug_traps(void); |
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49 | extern void breakpoint(void); |
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50 | |
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51 | /* Initialize whatever libc we are using |
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52 | * called from postdriver hook |
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53 | */ |
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54 | |
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55 | void bsp_libc_init() |
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56 | { |
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57 | /* extern int end; */ |
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58 | rtems_unsigned32 heap_start; |
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59 | |
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60 | heap_start = (rtems_unsigned32) BSP_Configuration.work_space_start + |
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61 | (rtems_unsigned32) BSP_Configuration.work_space_size; |
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62 | if (heap_start & (CPU_ALIGNMENT-1)) |
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63 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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64 | |
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65 | if (heap_start > (rtems_unsigned32) RAM_END) { |
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66 | /* rtems_fatal_error_occurred can not be used before initalization */ |
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67 | RAW_PUTS("\n\rRTEMS: Out of memory.\n\r"); |
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68 | RAW_PUTS("RTEMS: Check RAM_END and the size of the work space.\n\r"); |
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69 | } |
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70 | |
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71 | RTEMS_Malloc_Initialize((void *) heap_start, |
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72 | (RAM_END - heap_start), 0); |
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73 | |
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74 | /* |
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75 | * Init the RTEMS libio facility to provide UNIX-like system |
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76 | * calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc) |
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77 | * Uses malloc() to get area for the iops, so must be after malloc init |
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78 | */ |
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79 | |
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80 | rtems_libio_init(); |
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81 | |
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82 | /* |
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83 | * Set up for the libc handling. |
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84 | */ |
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85 | |
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86 | if (BSP_Configuration.ticks_per_timeslice > 0) |
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87 | libc_init(1); /* reentrant if possible */ |
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88 | else |
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89 | libc_init(0); /* non-reentrant */ |
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90 | } |
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91 | |
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92 | /* |
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93 | * Function: bsp_pretasking_hook |
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94 | * Created: 95/03/10 |
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95 | * |
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96 | * Description: |
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97 | * BSP pretasking hook. Called just before drivers are initialized. |
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98 | * Used to setup libc and install any BSP extensions. |
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99 | * |
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100 | * NOTES: |
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101 | * Must not use libc (to do io) from here, since drivers are |
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102 | * not yet initialized. |
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103 | * |
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104 | */ |
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105 | |
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106 | void |
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107 | bsp_pretasking_hook(void) |
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108 | { |
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109 | bsp_libc_init(); |
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110 | |
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111 | #ifdef STACK_CHECKER_ON |
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112 | /* |
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113 | * Initialize the stack bounds checker |
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114 | * We can either turn it on here or from the app. |
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115 | */ |
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116 | |
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117 | Stack_check_Initialize(); |
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118 | #endif |
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119 | |
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120 | #ifdef RTEMS_DEBUG |
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121 | rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); |
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122 | #endif |
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123 | } |
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124 | |
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125 | |
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126 | /* |
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127 | * After drivers are setup, register some "filenames" |
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128 | * and open stdin, stdout, stderr files |
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129 | * |
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130 | * Newlib will automatically associate the files with these |
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131 | * (it hardcodes the numbers) |
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132 | */ |
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133 | |
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134 | void |
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135 | bsp_postdriver_hook(void) |
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136 | { |
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137 | int stdin_fd, stdout_fd, stderr_fd; |
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138 | int error_code; |
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139 | |
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140 | error_code = 'S' << 24 | 'T' << 16; |
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141 | |
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142 | if ((stdin_fd = __rtems_open("/dev/console", O_RDONLY, 0)) == -1) |
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143 | rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' ); |
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144 | |
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145 | if ((stdout_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1) |
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146 | rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' ); |
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147 | |
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148 | if ((stderr_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1) |
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149 | rtems_fatal_error_occurred( error_code | 'D' << 8 | '2' ); |
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150 | |
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151 | if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2)) |
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152 | rtems_fatal_error_occurred( error_code | 'I' << 8 | 'O' ); |
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153 | } |
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154 | |
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155 | int main( |
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156 | int argc, |
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157 | char **argv, |
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158 | char **environp |
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159 | ) |
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160 | { |
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161 | void *vbr; |
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162 | |
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163 | /* set_debug_traps(); */ |
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164 | /* breakpoint(); */ |
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165 | |
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166 | /* |
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167 | * we only use a hook to get the C library initialized. |
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168 | */ |
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169 | |
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170 | Cpu_table.pretasking_hook = bsp_pretasking_hook; |
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171 | |
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172 | Cpu_table.predriver_hook = NULL; |
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173 | |
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174 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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175 | |
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176 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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177 | |
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178 | Cpu_table.do_zero_of_workspace = TRUE; |
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179 | |
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180 | m68k_get_vbr( vbr ); |
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181 | Cpu_table.interrupt_vector_table = vbr; |
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182 | |
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183 | Cpu_table.interrupt_stack_size = 0; |
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184 | |
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185 | Cpu_table.extra_mpci_receive_server_stack = 0; |
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186 | |
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187 | /* |
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188 | * Copy the table |
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189 | */ |
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190 | |
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191 | BSP_Configuration = Configuration; |
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192 | |
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193 | BSP_Configuration.work_space_start = (void *) |
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194 | (((unsigned int)_end + STACK_SIZE + 0x100) & 0xffffff00); |
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195 | |
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196 | /* |
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197 | * Add 1 region for Malloc in libc_low |
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198 | */ |
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199 | |
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200 | BSP_Configuration.RTEMS_api_configuration->maximum_regions++; |
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201 | |
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202 | /* |
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203 | * Add 1 extension for newlib libc |
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204 | */ |
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205 | |
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206 | #ifdef RTEMS_NEWLIB |
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207 | BSP_Configuration.maximum_extensions++; |
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208 | #endif |
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209 | |
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210 | /* |
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211 | * Add another extension if using the stack checker |
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212 | */ |
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213 | |
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214 | #ifdef STACK_CHECKER_ON |
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215 | BSP_Configuration.maximum_extensions++; |
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216 | #endif |
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217 | |
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218 | /* |
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219 | * Tell libio how many fd's we want and allow it to tweak config |
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220 | */ |
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221 | |
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222 | rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS); |
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223 | |
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224 | rtems_initialize_executive( &BSP_Configuration, &Cpu_table ); |
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225 | /* does not return */ |
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226 | |
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227 | /* Clock_exit is done as an atexit() function */ |
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228 | |
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229 | /* exit: */ |
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230 | /* configure peripherals for safe exit */ |
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231 | bsp_cleanup(); |
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232 | |
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233 | /* return like a "normal" subroutine to the monitor */ |
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234 | return 0; |
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235 | } |
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236 | |
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