1 | /* bspstart.c |
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2 | * |
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3 | * This set of routines 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 any of these are invoked. |
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7 | * |
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8 | * COPYRIGHT (c) 1989-2007. |
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9 | * On-Line Applications Research Corporation (OAR). |
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10 | * |
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11 | * The license and distribution terms for this file may in |
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12 | * the file LICENSE in this distribution or at |
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13 | * http://www.rtems.com/license/LICENSE. |
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14 | * |
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15 | * $Id: |
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16 | */ |
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17 | |
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18 | #include <string.h> |
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19 | |
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20 | #include <bsp.h> |
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21 | #include <rtems/libio.h> |
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22 | #include <rtems/libcsupport.h> |
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23 | #include <rtems/bspIo.h> |
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24 | #include <libcpu/cpuIdent.h> |
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25 | #define DEBUG 1 |
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26 | |
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27 | /* |
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28 | * Where the heap starts; is used by bsp_pretasking_hook; |
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29 | */ |
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30 | unsigned int BSP_heap_start; |
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31 | |
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32 | /* |
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33 | * PCI Bus Frequency |
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34 | */ |
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35 | unsigned int BSP_bus_frequency; /* XXX - Set this based upon the Score board */ |
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36 | |
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37 | /* |
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38 | * processor clock frequency |
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39 | */ |
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40 | unsigned int BSP_processor_frequency; /* XXX - Set this based upon the Score board */ |
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41 | |
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42 | /* |
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43 | * Time base divisior (how many tick for 1 second). |
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44 | */ |
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45 | unsigned int BSP_time_base_divisor = 1000; /* XXX - Just a guess */ |
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46 | |
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47 | /* |
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48 | * system init stack |
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49 | */ |
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50 | #define INIT_STACK_SIZE 0x1000 |
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51 | |
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52 | extern unsigned long __rtems_end[]; |
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53 | |
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54 | |
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55 | /* |
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56 | * Driver configuration parameters |
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57 | */ |
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58 | uint32_t bsp_clicks_per_usec; |
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59 | |
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60 | void BSP_panic(char *s) |
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61 | { |
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62 | printk("%s PANIC %s\n",_RTEMS_version, s); |
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63 | __asm__ __volatile ("sc"); |
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64 | } |
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65 | |
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66 | void _BSP_Fatal_error(unsigned int v) |
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67 | { |
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68 | printk("%s PANIC ERROR %x\n",_RTEMS_version, v); |
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69 | __asm__ __volatile ("sc"); |
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70 | } |
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71 | |
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72 | /* |
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73 | * Use the shared implementations of the following routines |
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74 | */ |
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75 | |
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76 | void bsp_postdriver_hook(void); |
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77 | void bsp_libc_init( void *, uint32_t, int ); |
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78 | |
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79 | /*PAGE |
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80 | * |
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81 | * bsp_pretasking_hook |
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82 | * |
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83 | * BSP pretasking hook. Called just before drivers are initialized. |
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84 | * Used to setup libc and install any BSP extensions. |
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85 | */ |
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86 | |
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87 | void bsp_pretasking_hook(void) |
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88 | { |
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89 | extern int end; |
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90 | uint32_t heap_start; |
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91 | uint32_t heap_size; |
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92 | |
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93 | #if DEBUG |
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94 | printk("bsp_pretasking_hook: Set Heap\n"); |
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95 | #endif |
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96 | heap_start = (uint32_t) &end; |
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97 | if (heap_start & (CPU_ALIGNMENT-1)) |
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98 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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99 | |
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100 | heap_size = Configuration.work_space_start - (void *)&end; |
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101 | heap_size &= 0xfffffff0; /* keep it as a multiple of 16 bytes */ |
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102 | |
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103 | #if DEBUG |
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104 | printk("bsp_pretasking_hook: bsp_libc_init\n"); |
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105 | #endif |
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106 | bsp_libc_init((void *) heap_start, heap_size, 0); |
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107 | #if DEBUG |
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108 | printk("bsp_pretasking_hook: End of routine\n"); |
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109 | #endif |
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110 | } |
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111 | |
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112 | /*PAGE |
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113 | * |
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114 | * bsp_predriver_hook |
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115 | * |
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116 | * Before drivers are setup initialize interupt vectors. |
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117 | */ |
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118 | |
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119 | void init_RTC(); |
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120 | void initialize_PMC(); |
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121 | |
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122 | void bsp_predriver_hook(void) |
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123 | { |
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124 | #if DEBUG |
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125 | printk("bsp_predriver_hook: init_RTC\n"); |
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126 | #endif |
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127 | init_RTC(); |
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128 | init_PCI(); |
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129 | initialize_universe(); |
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130 | |
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131 | #if DEBUG |
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132 | printk("bsp_predriver_hook: initialize_PCI_bridge\n"); |
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133 | #endif |
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134 | initialize_PCI_bridge (); |
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135 | |
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136 | #if (HAS_PMC_PSC8) |
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137 | #if DEBUG |
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138 | printk("bsp_predriver_hook: initialize_PMC\n"); |
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139 | #endif |
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140 | initialize_PMC(); |
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141 | #endif |
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142 | |
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143 | #if 0 |
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144 | /* |
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145 | * Initialize Bsp General purpose vector table. |
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146 | */ |
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147 | #if DEBUG |
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148 | printk("bsp_predriver_hook: initialize_external_exception_vector\n"); |
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149 | #endif |
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150 | initialize_external_exception_vector(); |
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151 | #endif |
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152 | |
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153 | #if (0) |
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154 | /* |
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155 | * XXX - Modify this to write a 48000000 (loop to self) command |
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156 | * to each interrupt location. This is better for debug. |
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157 | */ |
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158 | #if DEBUG |
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159 | printk("bsp_predriver_hook: bsp_spurious_initialize\n"); |
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160 | #endif |
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161 | bsp_spurious_initialize(); |
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162 | #endif |
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163 | |
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164 | ShowBATS(); |
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165 | |
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166 | #if DEBUG |
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167 | printk("bsp_predriver_hook: End of routine\n"); |
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168 | #endif |
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169 | |
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170 | } |
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171 | |
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172 | /*PAGE |
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173 | * |
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174 | * initialize_PMC |
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175 | */ |
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176 | |
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177 | void initialize_PMC() { |
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178 | volatile uint32_t *PMC_addr; |
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179 | uint8_t data; |
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180 | |
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181 | #if (0) /* First Values sent */ |
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182 | /* |
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183 | * set PMC base address. |
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184 | */ |
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185 | PMC_addr = BSP_PCI_DEVICE_ADDRESS( 0x14 ); |
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186 | *PMC_addr = (BSP_PCI_REGISTER_BASE >> 24) & 0x3f; |
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187 | |
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188 | /* |
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189 | * Clear status, enable SERR and memory space only. |
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190 | */ |
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191 | PMC_addr = BSP_PCI_DEVICE_ADDRESS( 0x4 ); |
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192 | *PMC_addr = 0x0201ff37; |
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193 | |
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194 | /* |
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195 | * Bit 0 and 1 HI cause Medium Loopback to occur. |
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196 | */ |
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197 | PMC_addr = (volatile uint32_t*) |
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198 | BSP_PMC_SERIAL_ADDRESS( 0x100000 ); |
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199 | data = *PMC_addr; |
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200 | /* *PMC_addr = data | 0x3; */ |
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201 | *PMC_addr = data & 0xfc; |
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202 | |
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203 | #endif |
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204 | |
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205 | #if (1) |
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206 | |
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207 | /* |
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208 | * Clear status, enable SERR and memory space only. |
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209 | */ |
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210 | #if DEBUG |
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211 | printk("initialize_PMC: set Device Address 0x4 \n"); |
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212 | ShowBATS(); |
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213 | #endif |
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214 | PMC_addr = BSP_PCI_DEVICE_ADDRESS( 0x4 ); |
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215 | *PMC_addr = 0x020080cc; |
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216 | |
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217 | /* |
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218 | * set PMC base address. |
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219 | */ |
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220 | #if DEBUG |
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221 | printk("initialize_PMC: set Device Address 0x14 \n"); |
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222 | ShowBATS(); |
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223 | #endif |
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224 | PMC_addr = BSP_PCI_DEVICE_ADDRESS( 0x14 ); |
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225 | *PMC_addr = (BSP_PCI_REGISTER_BASE >> 24) & 0x3f; |
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226 | |
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227 | #if DEBUG |
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228 | printk("initialize_PMC: set PMC Serial Address 0x100000\n"); |
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229 | #endif |
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230 | PMC_addr = (volatile uint32_t*) |
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231 | BSP_PMC_SERIAL_ADDRESS( 0x100000 ); |
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232 | data = *PMC_addr; |
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233 | *PMC_addr = data & 0xfc; |
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234 | |
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235 | #endif |
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236 | } |
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237 | |
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238 | /*PAGE |
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239 | * |
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240 | * bsp_postdriver_hook |
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241 | * |
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242 | * Standard post driver hook plus some BSP specific stuff. |
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243 | */ |
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244 | |
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245 | void bsp_postdriver_hook(void) |
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246 | { |
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247 | extern void Init_EE_mask_init(void); |
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248 | extern void open_dev_console(void); |
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249 | |
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250 | #if DEBUG |
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251 | printk("bsp_postdriver_hook: open_dev_console\n"); |
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252 | #endif |
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253 | open_dev_console(); |
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254 | ShowBATS(); |
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255 | |
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256 | #if DEBUG |
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257 | printk("bsp_postdriver_hook: Init_EE_mask_init\n"); |
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258 | #endif |
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259 | Init_EE_mask_init(); |
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260 | ShowBATS(); |
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261 | #if DEBUG |
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262 | printk("bsp_postdriver_hook: Finished procedure\n"); |
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263 | #endif |
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264 | } |
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265 | |
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266 | void bsp_set_trap_vectors( void ); |
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267 | |
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268 | /*PAGE |
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269 | * |
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270 | * bsp_start |
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271 | * |
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272 | * This routine does the bulk of the system initialization. |
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273 | */ |
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274 | |
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275 | void bsp_start( void ) |
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276 | { |
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277 | unsigned char *work_space_start; |
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278 | unsigned int msr_value = 0x0000; |
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279 | uint32_t intrStackStart; |
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280 | uint32_t intrStackSize; |
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281 | volatile uint32_t *ptr; |
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282 | ppc_cpu_id_t myCpu; |
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283 | ppc_cpu_revision_t myCpuRevision; |
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284 | |
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285 | rtems_bsp_delay( 1000 ); |
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286 | |
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287 | /* |
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288 | * Zero out lots of memory |
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289 | */ |
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290 | #if DEBUG |
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291 | printk("bsp_start: Zero out lots of memory\n"); |
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292 | ShowBATS(); |
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293 | #endif |
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294 | |
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295 | memset( |
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296 | &end, |
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297 | 0, |
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298 | (unsigned char *)&RAM_END - (unsigned char *) &end |
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299 | ); |
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300 | |
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301 | BSP_processor_frequency = 266000000; |
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302 | BSP_bus_frequency = 66000000; |
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303 | |
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304 | /* |
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305 | * Get CPU identification dynamically. Note that the get_ppc_cpu_type() |
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306 | * function store the result in global variables so that it can be used |
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307 | * later... |
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308 | */ |
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309 | myCpu = get_ppc_cpu_type(); |
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310 | myCpuRevision = get_ppc_cpu_revision(); |
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311 | |
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312 | /* |
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313 | * Initialize the interrupt related settings. |
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314 | */ |
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315 | intrStackStart = (uint32_t) __rtems_end + INIT_STACK_SIZE; |
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316 | intrStackSize = rtems_configuration_get_interrupt_stack_size(); |
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317 | BSP_heap_start = intrStackStart + intrStackSize; |
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318 | |
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319 | /* |
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320 | * Initialize default raw exception handlers. |
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321 | */ |
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322 | printk("ppc_exc_initialize\n"); |
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323 | ppc_exc_initialize( |
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324 | PPC_INTERRUPT_DISABLE_MASK_DEFAULT, |
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325 | intrStackStart, |
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326 | intrStackSize |
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327 | ); |
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328 | |
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329 | /* |
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330 | * There are multiple ROM monitors available for this board. |
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331 | */ |
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332 | #if (SCORE603E_USE_SDS) |
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333 | #if DEBUG |
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334 | printk("bsp_start: USE SDS\n"); |
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335 | #endif |
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336 | |
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337 | |
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338 | /* |
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339 | * Write instruction for Unconditional Branch to ROM vector. |
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340 | */ |
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341 | |
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342 | Code = 0x4bf00002; |
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343 | for (Address = 0x100; Address <= 0xe00; Address += 0x100) { |
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344 | A_Vector = (uint32_t*)Address; |
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345 | Code = 0x4bf00002 + Address; |
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346 | *A_Vector = Code; |
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347 | } |
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348 | |
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349 | for (Address = 0x1000; Address <= 0x1400; Address += 0x100) { |
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350 | A_Vector = (uint32_t*)Address; |
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351 | Code = 0x4bf00002 + Address; |
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352 | *A_Vector = Code; |
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353 | } |
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354 | |
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355 | msr_value = 0x2030; |
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356 | |
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357 | #elif (SCORE603E_USE_OPEN_FIRMWARE) |
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358 | #if DEBUG |
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359 | printk("bsp_start: USE OPEN FIRMWARE\n"); |
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360 | #endif |
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361 | msr_value = 0x2030; |
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362 | |
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363 | #elif (SCORE603E_USE_NONE) |
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364 | #if DEBUG |
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365 | printk("bsp_start: USE NONE\n"); |
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366 | #endif |
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367 | msr_value = 0x2030; |
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368 | _CPU_MSR_SET( msr_value ); |
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369 | bsp_set_trap_vectors(); |
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370 | |
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371 | #elif (SCORE603E_USE_DINK) |
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372 | #if DEBUG |
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373 | printk("bsp_start: USE DINK\n"); |
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374 | #endif |
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375 | msr_value = 0x2030; |
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376 | _CPU_MSR_SET( msr_value ); |
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377 | |
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378 | /* |
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379 | * Override the DINK error on a Decrementor interrupt. |
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380 | */ |
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381 | /* org dec_vector - rfi */ |
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382 | ptr = (uint32_t*)0x900; |
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383 | *ptr = 0x4c000064; |
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384 | |
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385 | #else |
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386 | #if DEBUG |
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387 | printk("bsp_start: ERROR unknow ROM Monitor\n"); |
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388 | #endif |
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389 | #error "SCORE603E BSPSTART.C -- what ROM monitor are you using" |
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390 | #endif |
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391 | |
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392 | _CPU_MSR_SET( msr_value ); |
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393 | |
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394 | /* |
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395 | * Need to "allocate" the memory for the RTEMS Workspace and |
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396 | * tell the RTEMS configuration where it is. This memory is |
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397 | * not malloc'ed. It is just "pulled from the air". |
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398 | */ |
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399 | |
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400 | #if DEBUG |
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401 | printk("bsp_start: Calculate Wrokspace\n"); |
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402 | #endif |
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403 | work_space_start = |
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404 | (unsigned char *)&RAM_END - rtems_configuration_get_work_space_size(); |
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405 | |
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406 | if ( work_space_start <= (unsigned char *)&end ) { |
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407 | printk( "bspstart: Not enough RAM!!!\n" ); |
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408 | bsp_cleanup(); |
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409 | } |
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410 | |
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411 | Configuration.work_space_start = work_space_start; |
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412 | |
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413 | /* |
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414 | * initialize the device driver parameters |
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415 | */ |
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416 | #if DEBUG |
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417 | printk("bsp_start: set clicks poer usec\n"); |
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418 | #endif |
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419 | bsp_clicks_per_usec = 66 / 4; /* XXX get from linkcmds */ |
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420 | |
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421 | #if ( PPC_USE_DATA_CACHE ) |
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422 | #if DEBUG |
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423 | printk("bsp_start: cache_enable\n"); |
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424 | #endif |
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425 | instruction_cache_enable (); |
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426 | data_cache_enable (); |
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427 | #if DEBUG |
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428 | printk("bsp_start: END PPC_USE_DATA_CACHE\n"); |
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429 | #endif |
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430 | #endif |
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431 | #if DEBUG |
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432 | printk("bsp_start: end BSPSTART\n"); |
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433 | ShowBATS(); |
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434 | #endif |
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435 | } |
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