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) 1989-1998. |
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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 | * MVME147 port for TNI - Telecom Bretagne |
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21 | * by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr) |
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22 | * May 1996 |
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23 | * |
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24 | * $Id$ |
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25 | */ |
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26 | |
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27 | #include <bsp.h> |
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28 | #include <rtems/libio.h> |
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29 | |
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30 | #include <libcsupport.h> |
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31 | |
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32 | #include <string.h> |
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33 | |
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34 | #ifdef STACK_CHECKER_ON |
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35 | #include <stackchk.h> |
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36 | #endif |
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37 | |
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38 | /* |
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39 | * The original table from the application and our copy of it with |
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40 | * some changes. |
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41 | */ |
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42 | |
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43 | extern rtems_configuration_table Configuration; |
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44 | rtems_configuration_table BSP_Configuration; |
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45 | |
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46 | rtems_cpu_table Cpu_table; |
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47 | |
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48 | char *rtems_progname; |
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49 | |
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50 | /* Initialize whatever libc we are using |
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51 | * called from postdriver hook |
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52 | */ |
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53 | |
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54 | void bsp_libc_init() |
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55 | { |
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56 | extern int end; |
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57 | rtems_unsigned32 heap_start; |
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58 | |
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59 | heap_start = (rtems_unsigned32) &end; |
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60 | if (heap_start & (CPU_ALIGNMENT-1)) |
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61 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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62 | |
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63 | RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0); |
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64 | |
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65 | /* |
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66 | * Init the RTEMS libio facility to provide UNIX-like system |
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67 | * calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc) |
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68 | * Uses malloc() to get area for the iops, so must be after malloc init |
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69 | */ |
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70 | |
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71 | rtems_libio_init(); |
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72 | |
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73 | /* |
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74 | * Set up for the libc handling. |
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75 | */ |
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76 | |
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77 | if (BSP_Configuration.ticks_per_timeslice > 0) |
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78 | libc_init(1); /* reentrant if possible */ |
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79 | else |
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80 | libc_init(0); /* non-reentrant */ |
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81 | } |
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82 | |
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83 | /* |
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84 | * Function: bsp_pretasking_hook |
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85 | * Created: 95/03/10 |
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86 | * |
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87 | * Description: |
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88 | * BSP pretasking hook. Called just before drivers are initialized. |
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89 | * Used to setup libc and install any BSP extensions. |
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90 | * |
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91 | * NOTES: |
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92 | * Must not use libc (to do io) from here, since drivers are |
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93 | * not yet initialized. |
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94 | * |
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95 | */ |
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96 | |
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97 | void |
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98 | bsp_pretasking_hook(void) |
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99 | { |
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100 | bsp_libc_init(); |
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101 | |
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102 | #ifdef STACK_CHECKER_ON |
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103 | /* |
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104 | * Initialize the stack bounds checker |
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105 | * We can either turn it on here or from the app. |
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106 | */ |
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107 | |
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108 | Stack_check_Initialize(); |
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109 | #endif |
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110 | |
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111 | #ifdef RTEMS_DEBUG |
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112 | rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); |
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113 | #endif |
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114 | } |
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115 | |
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116 | |
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117 | /* |
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118 | * Use the shared bsp_postdriver_hook() implementation |
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119 | */ |
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120 | |
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121 | void bsp_postdriver_hook(void); |
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122 | |
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123 | |
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124 | void bsp_start( void ) |
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125 | { |
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126 | m68k_isr_entry *monitors_vector_table; |
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127 | int index; |
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128 | rtems_unsigned8 node_number; |
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129 | |
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130 | monitors_vector_table = (m68k_isr_entry *)0; /* 147Bug Vectors are at 0 */ |
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131 | m68k_set_vbr( monitors_vector_table ); |
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132 | |
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133 | for ( index=2 ; index<=255 ; index++ ) |
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134 | M68Kvec[ index ] = monitors_vector_table[ 32 ]; |
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135 | |
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136 | M68Kvec[ 2 ] = monitors_vector_table[ 2 ]; /* bus error vector */ |
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137 | M68Kvec[ 4 ] = monitors_vector_table[ 4 ]; /* breakpoints vector */ |
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138 | M68Kvec[ 9 ] = monitors_vector_table[ 9 ]; /* trace vector */ |
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139 | M68Kvec[ 47 ] = monitors_vector_table[ 47 ]; /* system call vector */ |
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140 | |
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141 | m68k_set_vbr( &M68Kvec ); |
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142 | |
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143 | pcc->int_base_vector = PCC_BASE_VECTOR & 0xF0; |
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144 | /* Set the PCC int vectors base */ |
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145 | |
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146 | /* VME shared memory configuration */ |
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147 | /* Only the first node shares its top 128k DRAM */ |
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148 | |
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149 | vme_lcsr->utility_interrupt_vector = VME_BASE_VECTOR & 0xF8; |
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150 | /* Set VMEchip base interrupt vector */ |
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151 | vme_lcsr->utility_interrupt_mask |= 0x02; |
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152 | /* Enable SIGLP interruption (see shm support) */ |
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153 | pcc->general_purpose_control &= 0x10; |
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154 | /* Enable VME master interruptions */ |
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155 | |
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156 | if (vme_lcsr->system_controller & 0x01) { |
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157 | /* the board is system controller */ |
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158 | vme_lcsr->system_controller = 0x08; |
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159 | /* Make VME access round-robin */ |
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160 | } |
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161 | |
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162 | |
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163 | node_number = |
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164 | (rtems_unsigned8) |
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165 | (Configuration.User_multiprocessing_table->node - 1) & 0xF; |
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166 | /* Get and store node ID, first node_number = 0 */ |
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167 | vme_gcsr->board_identification = node_number; |
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168 | |
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169 | vme_lcsr->gcsr_base_address = node_number; |
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170 | /* Setup the base address of this board's gcsr */ |
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171 | vme_lcsr->timer_configuration = 0x6a; |
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172 | /* Enable VME time outs, maximum periods */ |
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173 | |
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174 | if (node_number == 0) { |
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175 | pcc->slave_base_address = 0x01; |
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176 | /* Set local DRAM base address on the VME bus to the DRAM size */ |
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177 | |
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178 | vme_lcsr->vme_bus_requester = 0x80; |
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179 | while (! (vme_lcsr->vme_bus_requester & 0x40)); |
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180 | /* Get VMEbus mastership */ |
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181 | vme_lcsr->slave_address_modifier = 0xfb; |
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182 | /* Share everything */ |
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183 | vme_lcsr->slave_configuration = 0x80; |
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184 | /* Share local DRAM */ |
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185 | vme_lcsr->vme_bus_requester = 0x0; |
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186 | /* release bus */ |
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187 | } else { |
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188 | pcc->slave_base_address = 0; |
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189 | /* Set local DRAM base address on the VME bus to 0 */ |
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190 | |
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191 | vme_lcsr->vme_bus_requester = 0x80; |
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192 | while (! (vme_lcsr->vme_bus_requester & 0x40)); |
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193 | /* Get VMEbus mastership */ |
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194 | vme_lcsr->slave_address_modifier = 0x08; |
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195 | /* Share only the short adress range */ |
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196 | vme_lcsr->slave_configuration = 0; |
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197 | /* Don't share local DRAM */ |
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198 | vme_lcsr->vme_bus_requester = 0x0; |
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199 | /* release bus */ |
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200 | } |
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201 | |
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202 | vme_lcsr->master_address_modifier = 0; |
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203 | /* Automatically set the address modifier */ |
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204 | vme_lcsr->master_configuration = 1; |
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205 | /* Disable D32 transfers : they don't work on my VMEbus rack */ |
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206 | |
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207 | m68k_enable_caching(); |
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208 | |
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209 | /* |
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210 | * we only use a hook to get the C library initialized. |
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211 | */ |
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212 | |
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213 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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214 | |
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215 | Cpu_table.predriver_hook = NULL; |
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216 | |
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217 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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218 | |
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219 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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220 | |
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221 | Cpu_table.do_zero_of_workspace = TRUE; |
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222 | |
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223 | Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec; |
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224 | |
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225 | Cpu_table.interrupt_stack_size = 4096; |
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226 | |
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227 | Cpu_table.extra_mpci_receive_server_stack = 0; |
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228 | |
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229 | /* |
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230 | * Copy the table |
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231 | */ |
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232 | |
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233 | BSP_Configuration = Configuration; |
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234 | |
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235 | BSP_Configuration.work_space_start = (void *) |
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236 | (RAM_END - BSP_Configuration.work_space_size); |
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237 | |
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238 | /* |
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239 | * Tell libio how many fd's we want and allow it to tweak config |
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240 | */ |
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241 | |
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242 | rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS); |
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243 | } |
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