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) 1989-2000. |
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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.rtems.com/license/LICENSE. |
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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 <string.h> |
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18 | |
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19 | #include <bsp.h> |
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20 | #include <libcpu/au1x00.h> |
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21 | #include <rtems/libio.h> |
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22 | #include <rtems/libcsupport.h> |
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23 | |
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24 | /* |
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25 | * The original table from the application and our copy of it with |
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26 | * some changes. |
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27 | */ |
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28 | |
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29 | extern void *_sdram_size; |
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30 | extern void *_sdram_base; |
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31 | extern void *_bss_free_start; |
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32 | |
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33 | unsigned long free_mem_start; |
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34 | unsigned long free_mem_end; |
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35 | |
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36 | au1x00_uart_t *uart0 = (au1x00_uart_t *)AU1X00_UART0_ADDR; |
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37 | au1x00_uart_t *uart3 = (au1x00_uart_t *)AU1X00_UART3_ADDR; |
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38 | |
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39 | /* |
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40 | * Use the shared implementations of the following routines |
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41 | */ |
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42 | |
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43 | void bsp_postdriver_hook(void); |
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44 | void bsp_libc_init( void *, uint32_t, int ); |
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45 | |
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46 | /* |
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47 | * Function: bsp_pretasking_hook |
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48 | * Created: 95/03/10 |
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49 | * |
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50 | * Description: |
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51 | * BSP pretasking hook. Called just before drivers are initialized. |
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52 | * Used to setup libc and install any BSP extensions. |
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53 | * |
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54 | * NOTES: |
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55 | * Must not use libc (to do io) from here, since drivers are |
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56 | * not yet initialized. |
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57 | * |
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58 | */ |
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59 | |
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60 | void bsp_pretasking_hook(void) |
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61 | { |
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62 | uint32_t heap_start; |
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63 | uint32_t heap_size; |
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64 | |
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65 | /* |
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66 | * Set up the heap. |
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67 | */ |
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68 | heap_start = free_mem_start; |
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69 | heap_size = free_mem_end - free_mem_start; |
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70 | |
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71 | /* call rtems lib init - malloc stuff */ |
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72 | bsp_libc_init((void *)heap_start, heap_size, 0); |
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73 | |
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74 | #ifdef RTEMS_DEBUG |
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75 | rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); |
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76 | #endif |
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77 | |
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78 | } |
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79 | |
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80 | /* |
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81 | * bsp_start |
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82 | * |
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83 | * This routine does the bulk of the system initialization. |
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84 | */ |
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85 | |
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86 | void bsp_start( void ) |
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87 | { |
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88 | extern void mips_install_isr_entries(void); |
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89 | unsigned int compare = 0; |
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90 | |
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91 | /* Place RTEMS workspace at beginning of free memory. */ |
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92 | Configuration.work_space_start = (void *)&_bss_free_start; |
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93 | |
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94 | free_mem_start = ((uint32_t)&_bss_free_start + |
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95 | rtems_configuration_get_work_space_size()); |
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96 | |
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97 | free_mem_end = ((uint32_t)&_sdram_base + (uint32_t)&_sdram_size); |
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98 | |
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99 | mips_set_sr( 0x7f00 ); /* all interrupts unmasked but globally off */ |
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100 | /* depend on the IRC to take care of things */ |
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101 | asm volatile ("mtc0 %0, $11\n" :: "r" (compare)); |
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102 | mips_install_isr_entries(); |
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103 | } |
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104 | |
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105 | |
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106 | /* These replace the ones in newlib. I'm not sure why the newlib ones |
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107 | * don't work. |
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108 | */ |
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109 | void _init(void) |
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110 | { |
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111 | } |
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112 | |
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113 | void _fini(void) |
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114 | { |
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115 | } |
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