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) 1989-1999. |
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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 <rtems.h> |
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18 | #include <bsp.h> |
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19 | #include <rtems/libio.h> |
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20 | |
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21 | #include <libcsupport.h> |
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22 | |
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23 | #include <string.h> |
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24 | |
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25 | extern rtems_configuration_table Configuration; |
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26 | |
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27 | rtems_configuration_table BSP_Configuration; |
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28 | rtems_cpu_table Cpu_table; |
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29 | |
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30 | int cpu_number; |
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31 | |
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32 | #define WORKSPACE_SIZE (1024 * 1024) |
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33 | rtems_unsigned8 MY_WORK_SPACE[ WORKSPACE_SIZE ]; |
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34 | |
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35 | /* |
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36 | * Amount to increment itimer by each pass |
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37 | * It is a variable instead of a #define to allow the 'looptest' |
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38 | * script to bump it without recompiling rtems |
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39 | */ |
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40 | |
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41 | rtems_unsigned32 CPU_HPPA_CLICKS_PER_TICK; |
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42 | |
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43 | #if SIMHPPA_FAST_IDLE |
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44 | |
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45 | /* |
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46 | * Many of the tests are very slow on the simulator because they have |
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47 | * have 5 second delays hardwired in. |
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48 | * Try to speed those tests up by speeding up the clock when in idle |
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49 | */ |
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50 | |
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51 | rtems_extension fast_idle_switch_hook( |
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52 | rtems_tcb *current_task, |
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53 | rtems_tcb *heir_task |
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54 | ) |
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55 | { |
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56 | static rtems_unsigned32 normal_clock = ~0; |
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57 | static rtems_unsigned32 fast_clock; |
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58 | |
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59 | /* init our params on first call */ |
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60 | if (normal_clock == (rtems_unsigned32) ~0) |
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61 | { |
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62 | normal_clock = CPU_HPPA_CLICKS_PER_TICK; |
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63 | fast_clock = CPU_HPPA_CLICKS_PER_TICK / 0x100; |
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64 | if (fast_clock == 0) /* who? me? pathological? never! */ |
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65 | fast_clock++; |
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66 | } |
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67 | |
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68 | /* |
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69 | * Checking for 'name' field of 'IDLE' is not the best/safest, |
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70 | * but its the best we could think of at the moment. |
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71 | */ |
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72 | |
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73 | if (heir_task == _Thread_Idle) |
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74 | CPU_HPPA_CLICKS_PER_TICK = fast_clock; |
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75 | else if (current_task == _Thread_Idle) |
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76 | CPU_HPPA_CLICKS_PER_TICK = normal_clock; |
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77 | } |
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78 | |
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79 | #endif |
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80 | |
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81 | /* |
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82 | * Use the shared implementations of the following routines |
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83 | */ |
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84 | |
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85 | void bsp_postdriver_hook(void); |
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86 | void bsp_libc_init( void *, unsigned32, int ); |
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87 | |
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88 | /* |
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89 | * Function: bsp_pretasking_hook |
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90 | * Created: 95/03/10 |
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91 | * |
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92 | * Description: |
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93 | * BSP pretasking hook. Called just before drivers are initialized. |
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94 | * Used to setup libc and install any BSP extensions. |
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95 | * |
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96 | * Notes: |
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97 | * Must not use libc (to do io) from here, since drivers are |
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98 | * not yet initialized. |
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99 | */ |
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100 | |
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101 | void bsp_pretasking_hook(void) |
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102 | { |
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103 | extern int end; |
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104 | rtems_unsigned32 heap_start; |
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105 | |
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106 | heap_start = (rtems_unsigned32) &end; |
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107 | if (heap_start & (CPU_ALIGNMENT-1)) |
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108 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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109 | |
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110 | bsp_libc_init((void *) heap_start, 64 * 1024, 0); |
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111 | |
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112 | /* |
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113 | * on MP systems, always use the print buffer |
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114 | * instead of the (broken) system calls |
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115 | */ |
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116 | |
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117 | if (BSP_Configuration.User_multiprocessing_table) |
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118 | use_print_buffer = 1; |
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119 | |
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120 | #ifdef SIMHPPA_ROM |
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121 | use_print_buffer = 1; |
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122 | #endif |
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123 | |
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124 | #if SIMHPPA_FAST_IDLE |
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125 | /* |
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126 | * Install the fast idle task switch extension |
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127 | * |
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128 | * on MP systems, might now want to do this; it confuses at least |
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129 | * one test (mp06) |
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130 | */ |
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131 | |
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132 | #if 0 |
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133 | if (BSP_Configuration.User_multiprocessing_table == 0) |
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134 | #endif |
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135 | { |
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136 | rtems_extensions_table fast_idle_extension; |
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137 | rtems_id extension_id; |
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138 | rtems_status_code rc; |
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139 | |
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140 | memset(&fast_idle_extension, 0, sizeof(fast_idle_extension)); |
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141 | |
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142 | fast_idle_extension.thread_switch = fast_idle_switch_hook; |
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143 | |
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144 | rc = rtems_extension_create(rtems_build_name('F', 'D', 'L', 'E'), |
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145 | &fast_idle_extension, &extension_id); |
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146 | if (rc != RTEMS_SUCCESSFUL) |
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147 | rtems_fatal_error_occurred(rc); |
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148 | } |
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149 | #endif |
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150 | } |
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151 | |
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152 | void bsp_start(void) |
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153 | { |
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154 | /* |
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155 | * Set cpu_number to accurately reflect our cpu number |
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156 | */ |
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157 | |
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158 | #ifdef hppa7200 |
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159 | /* |
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160 | * Use HPPA_DR0 if supported |
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161 | */ |
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162 | { |
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163 | int dr0; |
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164 | HPPA_ASM_MFCPU(HPPA_DR0, dr0); |
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165 | cpu_number = (dr0 >> 4) & 0x7; |
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166 | } |
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167 | #else |
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168 | if (Configuration.User_multiprocessing_table) |
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169 | cpu_number = Configuration.User_multiprocessing_table->node - 1; |
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170 | else |
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171 | cpu_number = 0; |
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172 | #endif |
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173 | |
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174 | BSP_Configuration.work_space_start = (void *)MY_WORK_SPACE; |
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175 | if (BSP_Configuration.work_space_size) |
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176 | BSP_Configuration.work_space_size = WORKSPACE_SIZE; |
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177 | |
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178 | /* |
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179 | * Set up our hooks |
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180 | * Make sure libc_init is done before drivers init'd so that |
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181 | * they can use atexit() |
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182 | */ |
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183 | |
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184 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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185 | Cpu_table.postdriver_hook = bsp_postdriver_hook; /* register drivers */ |
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186 | |
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187 | /* |
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188 | * Don't zero out the workspace. The simulator did it for us. |
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189 | */ |
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190 | |
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191 | Cpu_table.do_zero_of_workspace = FALSE; |
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192 | Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY; |
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193 | |
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194 | /* |
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195 | * Set this artificially low for the simulator |
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196 | */ |
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197 | |
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198 | Cpu_table.itimer_clicks_per_microsecond = 1; |
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199 | |
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200 | #if 0 |
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201 | /* |
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202 | * Commented by DIVISION INC. External interrupt |
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203 | * processing is now divorced from RTEMS for HPPA. |
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204 | */ |
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205 | |
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206 | /* |
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207 | * Determine the external interrupt processing order |
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208 | * the external interrupt handler walks thru this table, in |
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209 | * order checking for posted interrupts. |
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210 | */ |
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211 | |
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212 | Cpu_table.external_interrupts = 0; |
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213 | |
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214 | Cpu_table.external_interrupt[ Cpu_table.external_interrupts ] = |
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215 | HPPA_INTERRUPT_EXTERNAL_INTERVAL_TIMER; |
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216 | Cpu_table.external_interrupts++; |
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217 | |
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218 | if ( Configuration.User_multiprocessing_table ) { |
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219 | Cpu_table.external_interrupt[ Cpu_table.external_interrupts ] = |
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220 | HPPA_INTERRUPT_EXTERNAL_10; |
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221 | Cpu_table.external_interrupts++; |
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222 | } |
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223 | #endif |
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224 | |
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225 | #if SIMHPPA_FAST_IDLE |
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226 | /* |
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227 | * Add 1 extension for fast idle |
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228 | */ |
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229 | |
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230 | BSP_Configuration.maximum_extensions++; |
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231 | #endif |
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232 | |
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233 | /* |
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234 | * Set the "clicks per tick" for the simulator |
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235 | * used by libcpu/hppa/clock/clock.c to schedule interrupts |
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236 | * |
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237 | * Set it only if 0 to allow for simulator setting it via script |
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238 | * on test startup. |
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239 | */ |
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240 | |
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241 | if (CPU_HPPA_CLICKS_PER_TICK == 0) |
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242 | CPU_HPPA_CLICKS_PER_TICK = 0x4000; |
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243 | } |
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