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 | * The MPC860 specific stuff was written by Jay Monkman (jmonkman@frasca.com) |
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9 | * |
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10 | * COPYRIGHT (c) 1989-1998. |
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11 | * On-Line Applications Research Corporation (OAR). |
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12 | * Copyright assigned to U.S. Government, 1994. |
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13 | * |
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14 | * The license and distribution terms for this file may be |
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15 | * found in the file LICENSE in this distribution or at |
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16 | * http://www.OARcorp.com/rtems/license.html. |
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17 | * |
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18 | * $Id$ |
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19 | */ |
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20 | |
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21 | #include <bsp.h> |
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22 | #include <mpc860.h> |
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23 | #include <rtems/libio.h> |
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24 | |
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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 <info.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 | boardinfo_t M860_binfo; |
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35 | |
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36 | |
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37 | /* |
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38 | * The original table from the application and our copy of it with |
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39 | * some changes. |
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40 | */ |
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41 | extern rtems_configuration_table Configuration; |
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42 | |
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43 | rtems_configuration_table BSP_Configuration; |
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44 | |
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45 | rtems_cpu_table Cpu_table; |
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46 | |
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47 | char *rtems_progname; |
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48 | |
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49 | /* |
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50 | * Use the shared implementations of the following routines |
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51 | */ |
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52 | void bsp_postdriver_hook(void); |
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53 | void bsp_libc_init( void *, unsigned32, int ); |
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54 | |
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55 | /* |
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56 | * Function: bsp_pretasking_hook |
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57 | * Created: 95/03/10 |
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58 | * |
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59 | * Description: |
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60 | * BSP pretasking hook. Called just before drivers are initialized. |
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61 | * Used to setup libc and install any BSP extensions. |
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62 | * |
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63 | * NOTES: |
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64 | * Must not use libc (to do io) from here, since drivers are |
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65 | * not yet initialized. |
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66 | * |
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67 | */ |
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68 | |
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69 | void |
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70 | bsp_pretasking_hook(void) |
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71 | { |
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72 | extern int _end; |
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73 | rtems_unsigned32 heap_start; |
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74 | |
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75 | /* |
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76 | * Let's check to see if the size of M860_binfo is what |
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77 | * it should be. It might not be if the info.h files |
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78 | * for RTEMS and the bootloader define boardinfo_t |
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79 | * differently. |
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80 | */ |
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81 | |
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82 | /* Oops. printf() won't work yet, since the console is not initialized. |
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83 | I should probably find some way of doing this though. |
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84 | if (M860_binfo.size != sizeof(boardinfo_t)) { |
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85 | printf("The size of the Board Info Block appears to be incorrect.\n"); |
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86 | printf(" This could occur if the 'info.h' files for RTEMS and the\n"); |
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87 | printf(" bootloader differ in their definition of boardinfo_t\n"); |
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88 | } |
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89 | */ |
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90 | heap_start = (rtems_unsigned32) &_end; |
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91 | |
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92 | /* Align the heap on a natural boundary (4 bytes?) */ |
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93 | if (heap_start & (CPU_ALIGNMENT-1)) { |
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94 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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95 | } |
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96 | /* set up a 256K heap */ |
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97 | bsp_libc_init((void *) heap_start, 256 * 1024, 0); |
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98 | |
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99 | #ifdef STACK_CHECKER_ON |
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100 | /* |
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101 | * Initialize the stack bounds checker |
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102 | * We can either turn it on here or from the app. |
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103 | */ |
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104 | |
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105 | Stack_check_Initialize(); |
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106 | #endif |
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107 | |
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108 | #ifdef RTEMS_DEBUG |
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109 | rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); |
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110 | #endif |
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111 | } |
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112 | |
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113 | |
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114 | void bsp_start(void) |
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115 | { |
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116 | extern int _end; |
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117 | rtems_unsigned32 heap_start; |
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118 | rtems_unsigned32 ws_start; |
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119 | /* |
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120 | * Allocate the memory for the RTEMS Work Space. This can come from |
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121 | * a variety of places: hard coded address, malloc'ed from outside |
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122 | * RTEMS world (e.g. simulator or primitive memory manager), or (as |
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123 | * typically done by stock BSPs) by subtracting the required amount |
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124 | * of work space from the last physical address on the CPU board. |
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125 | */ |
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126 | |
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127 | /* |
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128 | * Need to "allocate" the memory for the RTEMS Workspace and |
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129 | * tell the RTEMS configuration where it is. This memory is |
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130 | * not malloc'ed. It is just "pulled from the air". |
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131 | */ |
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132 | |
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133 | heap_start = (rtems_unsigned32) &_end; |
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134 | if (heap_start & (CPU_ALIGNMENT-1)) |
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135 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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136 | |
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137 | |
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138 | ws_start = heap_start + (256 * 1024); |
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139 | if (ws_start & ((512 * 1024) - 1)) { /* align to 512K boundary */ |
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140 | ws_start = (ws_start + (512 * 1024)) & ~((512 * 1024) - 1); |
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141 | } |
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142 | |
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143 | BSP_Configuration.work_space_start = (void *)ws_start; |
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144 | BSP_Configuration.work_space_size = 512 * 1024; |
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145 | |
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146 | /* |
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147 | * initialize the CPU table for this BSP |
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148 | */ |
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149 | |
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150 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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151 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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152 | Cpu_table.interrupt_stack_size = 4 * 1024; |
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153 | |
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154 | Cpu_table.clicks_per_usec = 1; /* for 4MHz extclk */ |
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155 | Cpu_table.serial_per_sec = 10000000; |
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156 | Cpu_table.serial_external_clock = 1; |
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157 | Cpu_table.serial_xon_xoff = 0; |
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158 | Cpu_table.serial_cts_rts = 1; |
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159 | Cpu_table.serial_rate = 9600; |
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160 | Cpu_table.timer_average_overhead = 0; |
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161 | Cpu_table.timer_least_valid = 0; |
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162 | Cpu_table.clock_speed = 40000000; |
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163 | |
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164 | /* |
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165 | * Call this in case we use TERMIOS for console I/O |
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166 | */ |
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167 | m860_console_reserve_resources(&BSP_Configuration); |
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168 | |
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169 | /* |
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170 | * Since we are currently autodetecting whether to use SCC1 or |
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171 | * the FEC for ethernet, we set up a register in the ethernet |
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172 | * transciever that is used for 10/100 Mbps ethernet now, so that |
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173 | * we can attempt to read it later in rtems_enet_driver_attach() |
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174 | */ |
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175 | m860.fec.mii_speed = 0x0a; |
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176 | m860.fec.mii_data = 0x680a0000; |
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177 | |
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178 | |
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179 | m860.scc2.sccm=0; |
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180 | m860.scc2p.rbase=0; |
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181 | m860.scc2p.tbase=0; |
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182 | M860ExecuteRISC(M860_CR_OP_STOP_TX | M860_CR_CHAN_SCC2); |
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183 | |
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184 | mmu_init(); |
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185 | } |
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186 | |
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187 | |
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