1 | /*-------------------------------------------------------------------------+ |
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2 | | This file contains the ARM BSP startup package. It includes application, |
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3 | | board, and monitor specific initialization and configuration. The generic CPU |
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4 | | dependent initialization has been performed before this routine is invoked. |
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5 | +--------------------------------------------------------------------------+ |
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6 | | |
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7 | | Copyright (c) 2000 Canon Research Centre France SA. |
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8 | | Emmanuel Raguet, mailto:raguet@crf.canon.fr |
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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 found in the file LICENSE in this distribution or at |
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12 | | http://www.rtems.com/license/LICENSE. |
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13 | | |
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14 | +--------------------------------------------------------------------------*/ |
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15 | |
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16 | |
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17 | #include <bsp.h> |
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18 | #include <rtems/libcsupport.h> |
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19 | #include <rtems/libio.h> |
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20 | #include <s3c2400.h> |
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21 | |
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22 | /*-------------------------------------------------------------------------+ |
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23 | | Global Variables |
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24 | +--------------------------------------------------------------------------*/ |
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25 | |
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26 | extern void *_sdram_size; |
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27 | extern void *_sdram_base; |
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28 | extern void *_bss_free_start; |
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29 | |
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30 | unsigned long free_mem_start; |
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31 | unsigned long free_mem_end; |
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32 | |
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33 | /* The original BSP configuration table from the application and our copy of it |
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34 | with some changes. */ |
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35 | |
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36 | extern rtems_configuration_table Configuration; |
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37 | rtems_configuration_table BSP_Configuration; |
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38 | |
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39 | rtems_cpu_table Cpu_table; /* CPU configuration table. */ |
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40 | char *rtems_progname = "RTEMS"; /* Program name - from main(). */ |
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41 | |
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42 | /*-------------------------------------------------------------------------+ |
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43 | | External Prototypes |
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44 | +--------------------------------------------------------------------------*/ |
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45 | extern void rtems_irq_mngt_init(void); |
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46 | void bsp_libc_init( void *, uint32_t, int ); |
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47 | void bsp_postdriver_hook(void); |
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48 | |
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49 | /*-------------------------------------------------------------------------+ |
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50 | | Function: bsp_pretasking_hook |
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51 | | Description: BSP pretasking hook. Called just before drivers are |
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52 | | initialized. Used to setup libc and install any BSP |
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53 | | extensions. NOTE: Must not use libc (to do io) from here, |
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54 | | since drivers are not yet initialized. |
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55 | | Global Variables: None. |
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56 | | Arguments: None. |
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57 | | Returns: Nothing. |
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58 | +--------------------------------------------------------------------------*/ |
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59 | void bsp_pretasking_hook(void) |
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60 | { |
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61 | uint32_t heap_start; |
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62 | uint32_t heap_size; |
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63 | |
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64 | /* |
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65 | * Set up the heap. |
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66 | */ |
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67 | heap_start = free_mem_start; |
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68 | heap_size = free_mem_end - free_mem_start; |
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69 | |
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70 | /* call rtems lib init - malloc stuff */ |
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71 | bsp_libc_init((void *)heap_start, heap_size, 0); |
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72 | |
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73 | #ifdef RTEMS_DEBUG |
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74 | |
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75 | rtems_debug_enable(RTEMS_DEBUG_ALL_MASK); |
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76 | |
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77 | #endif /* RTEMS_DEBUG */ |
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78 | |
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79 | } /* bsp_pretasking_hook */ |
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80 | |
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81 | /*-------------------------------------------------------------------------+ |
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82 | | Function: bsp_start |
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83 | | Description: Called before main is invoked. |
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84 | | Global Variables: None. |
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85 | | Arguments: None. |
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86 | | Returns: Nothing. |
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87 | +--------------------------------------------------------------------------*/ |
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88 | void bsp_start_default( void ) |
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89 | { |
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90 | uint32_t cr; |
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91 | /* If we don't have command line arguments set default program name. */ |
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92 | |
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93 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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94 | Cpu_table.predriver_hook = NULL; /* use system's */ |
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95 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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96 | Cpu_table.idle_task = NULL; |
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97 | |
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98 | Cpu_table.do_zero_of_workspace = TRUE; |
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99 | Cpu_table.interrupt_stack_size = 4096; |
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100 | Cpu_table.extra_mpci_receive_server_stack = 0; |
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101 | |
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102 | /* stop all timers */ |
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103 | rTCON=0x0; |
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104 | |
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105 | /* disable interrupts */ |
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106 | rINTMOD=0x0; |
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107 | rINTMSK=BIT_ALLMSK; /* unmasked by drivers */ |
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108 | rSRCPND=BIT_ALLMSK; |
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109 | rINTMSK=BIT_ALLMSK; |
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110 | rINTPND=BIT_ALLMSK; |
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111 | |
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112 | /* setup clocks 133/66/33) */ |
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113 | rCLKDIVN=3; |
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114 | rMPLLCON=((M_MDIV<<12)+(M_PDIV<<4)+M_SDIV); |
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115 | |
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116 | /* set prescaler for timers 2,3,4 to 16(15+1) */ |
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117 | cr=rTCFG0 & 0xFFFF00FF; |
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118 | rTCFG0=(cr | (15<<8)); |
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119 | |
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120 | /* set prescaler for timers 0,1 to 1(0+1) */ |
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121 | cr=rTCFG0 & 0xFFFFFF00; |
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122 | rTCFG0=(cr | (0<<0)); |
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123 | |
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124 | /* Place RTEMS workspace at beginning of free memory. */ |
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125 | BSP_Configuration.work_space_start = (void *)&_bss_free_start; |
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126 | |
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127 | free_mem_start = ((uint32_t)&_bss_free_start + BSP_Configuration.work_space_size); |
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128 | |
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129 | free_mem_end = ((uint32_t)&_sdram_base + (uint32_t)&_sdram_size); |
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130 | |
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131 | /* |
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132 | * Init rtems exceptions management |
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133 | */ |
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134 | rtems_exception_init_mngt(); |
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135 | |
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136 | /* |
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137 | * Init rtems interrupt management |
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138 | */ |
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139 | rtems_irq_mngt_init(); |
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140 | /* |
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141 | * The following information is very useful when debugging. |
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142 | */ |
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143 | |
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144 | #if 0 |
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145 | printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size ); |
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146 | printk( "maximum_extensions = 0x%x\n", BSP_Configuration.maximum_extensions ); |
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147 | printk( "microseconds_per_tick = 0x%x\n", |
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148 | BSP_Configuration.microseconds_per_tick ); |
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149 | printk( "ticks_per_timeslice = 0x%x\n", |
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150 | BSP_Configuration.ticks_per_timeslice ); |
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151 | printk( "maximum_devices = 0x%x\n", BSP_Configuration.maximum_devices ); |
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152 | printk( "number_of_device_drivers = 0x%x\n", |
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153 | BSP_Configuration.number_of_device_drivers ); |
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154 | printk( "Device_driver_table = 0x%x\n", |
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155 | BSP_Configuration.Device_driver_table ); |
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156 | |
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157 | printk( "_heap_size = 0x%x\n", _heap_size ); |
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158 | /* printk( "_stack_size = 0x%x\n", _stack_size );*/ |
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159 | printk( "rtemsFreeMemStart = 0x%x\n", rtemsFreeMemStart ); |
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160 | printk( "work_space_start = 0x%x\n", BSP_Configuration.work_space_start ); |
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161 | printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size ); |
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162 | #endif |
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163 | |
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164 | } |
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165 | |
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166 | /* |
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167 | * By making this a weak alias for bsp_start_default, a brave soul |
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168 | * can override the actual bsp_start routine used. |
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169 | */ |
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170 | |
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171 | void bsp_start (void) __attribute__ ((weak, alias("bsp_start_default"))); |
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172 | |
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173 | void bsp_reset(void) |
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174 | { |
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175 | rtems_interrupt_level level; |
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176 | _CPU_ISR_Disable(level); |
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177 | printk("bsp_reset.....\n"); |
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178 | while(1); |
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179 | } |
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180 | |
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181 | void LCD_BREAK() |
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182 | { |
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183 | int x,y; |
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184 | unsigned short color=0; |
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185 | volatile unsigned char* framebuffer = (unsigned char*) 0x0C7B4000; |
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186 | while(1) { |
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187 | for(y = 0; y < 240; y++) { |
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188 | for(x = 0; x < 320; x++) { |
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189 | *(framebuffer + (239 - y) + (240 * x)) = color; |
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190 | } |
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191 | } |
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192 | color++; |
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193 | } |
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194 | } |
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195 | |
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