[ac7d5ef0] | 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 | * INPUT: NONE |
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| 9 | * |
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| 10 | * OUTPUT: NONE |
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| 11 | * |
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[60b791ad] | 12 | * COPYRIGHT (c) 1989-1998. |
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[ac7d5ef0] | 13 | * On-Line Applications Research Corporation (OAR). |
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[03f2154e] | 14 | * Copyright assigned to U.S. Government, 1994. |
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[ac7d5ef0] | 15 | * |
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[98e4ebf5] | 16 | * The license and distribution terms for this file may be |
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| 17 | * found in the file LICENSE in this distribution or at |
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[03f2154e] | 18 | * http://www.OARcorp.com/rtems/license.html. |
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[ac7d5ef0] | 19 | * |
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| 20 | * $Id$ |
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| 21 | */ |
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| 22 | |
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| 23 | #include <bsp.h> |
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[3a4ae6c] | 24 | #include <rtems/libio.h> |
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| 25 | |
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[ac7d5ef0] | 26 | #include <libcsupport.h> |
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[81d96577] | 27 | #include <zilog/z8036.h> |
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[ac7d5ef0] | 28 | |
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[3a4ae6c] | 29 | #include <string.h> |
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| 30 | |
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| 31 | #ifdef STACK_CHECKER_ON |
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| 32 | #include <stackchk.h> |
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| 33 | #endif |
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[ac7d5ef0] | 34 | |
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| 35 | /* |
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| 36 | * The original table from the application and our copy of it with |
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| 37 | * some changes. |
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| 38 | */ |
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| 39 | |
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| 40 | extern rtems_configuration_table Configuration; |
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| 41 | rtems_configuration_table BSP_Configuration; |
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| 42 | |
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| 43 | rtems_cpu_table Cpu_table; |
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| 44 | |
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[3a4ae6c] | 45 | char *rtems_progname; |
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| 46 | |
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[ac7d5ef0] | 47 | /* Initialize whatever libc we are using |
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| 48 | * called from postdriver hook |
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| 49 | */ |
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| 50 | |
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| 51 | void bsp_libc_init() |
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| 52 | { |
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| 53 | extern int end; |
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| 54 | rtems_unsigned32 heap_start; |
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| 55 | |
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| 56 | heap_start = (rtems_unsigned32) &end; |
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| 57 | if (heap_start & (CPU_ALIGNMENT-1)) |
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| 58 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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| 59 | |
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| 60 | RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0); |
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| 61 | |
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[3a4ae6c] | 62 | /* |
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| 63 | * Init the RTEMS libio facility to provide UNIX-like system |
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[634e746] | 64 | * calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc) |
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[3a4ae6c] | 65 | * Uses malloc() to get area for the iops, so must be after malloc init |
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| 66 | */ |
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| 67 | |
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| 68 | rtems_libio_init(); |
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| 69 | |
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[ac7d5ef0] | 70 | /* |
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| 71 | * Set up for the libc handling. |
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| 72 | */ |
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| 73 | |
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| 74 | if (BSP_Configuration.ticks_per_timeslice > 0) |
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| 75 | libc_init(1); /* reentrant if possible */ |
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| 76 | else |
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| 77 | libc_init(0); /* non-reentrant */ |
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[3652ad35] | 78 | } |
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[ac7d5ef0] | 79 | |
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[3652ad35] | 80 | /* |
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| 81 | * Function: bsp_pretasking_hook |
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| 82 | * Created: 95/03/10 |
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| 83 | * |
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| 84 | * Description: |
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| 85 | * BSP pretasking hook. Called just before drivers are initialized. |
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| 86 | * Used to setup libc and install any BSP extensions. |
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| 87 | * |
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| 88 | * NOTES: |
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| 89 | * Must not use libc (to do io) from here, since drivers are |
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| 90 | * not yet initialized. |
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| 91 | * |
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| 92 | */ |
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| 93 | |
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| 94 | void |
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| 95 | bsp_pretasking_hook(void) |
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| 96 | { |
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| 97 | bsp_libc_init(); |
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| 98 | |
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| 99 | #ifdef STACK_CHECKER_ON |
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[ac7d5ef0] | 100 | /* |
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| 101 | * Initialize the stack bounds checker |
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[3652ad35] | 102 | * We can either turn it on here or from the app. |
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[ac7d5ef0] | 103 | */ |
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[3652ad35] | 104 | |
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[ac7d5ef0] | 105 | Stack_check_Initialize(); |
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| 106 | #endif |
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[3652ad35] | 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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[ac7d5ef0] | 111 | } |
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[3652ad35] | 112 | |
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[3a4ae6c] | 113 | /* |
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[8f95b5f] | 114 | * Use the shared bsp_postdriver_hook() implementation |
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[3a4ae6c] | 115 | */ |
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| 116 | |
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[8f95b5f] | 117 | void bsp_postdriver_hook(void); |
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[3a4ae6c] | 118 | |
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[e2a2ec60] | 119 | void bsp_start( void ) |
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[ac7d5ef0] | 120 | { |
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[497428a2] | 121 | m68k_isr_entry *monitors_vector_table; |
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| 122 | int index; |
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[ac7d5ef0] | 123 | |
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[497428a2] | 124 | monitors_vector_table = (m68k_isr_entry *)0; /* 135Bug Vectors are at 0 */ |
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[ac7d5ef0] | 125 | m68k_set_vbr( monitors_vector_table ); |
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| 126 | |
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| 127 | for ( index=2 ; index<=255 ; index++ ) |
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| 128 | M68Kvec[ index ] = monitors_vector_table[ 32 ]; |
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| 129 | |
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| 130 | M68Kvec[ 2 ] = monitors_vector_table[ 2 ]; /* bus error vector */ |
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| 131 | M68Kvec[ 4 ] = monitors_vector_table[ 4 ]; /* breakpoints vector */ |
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| 132 | M68Kvec[ 9 ] = monitors_vector_table[ 9 ]; /* trace vector */ |
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| 133 | M68Kvec[ 47 ] = monitors_vector_table[ 47 ]; /* system call vector */ |
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| 134 | |
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| 135 | m68k_set_vbr( &M68Kvec ); |
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| 136 | |
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| 137 | (*(rtems_unsigned8 *)0xfffb0067) = 0x7f; /* make VME access round-robin */ |
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| 138 | |
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| 139 | m68k_enable_caching(); |
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| 140 | |
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| 141 | /* |
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| 142 | * we only use a hook to get the C library initialized. |
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| 143 | */ |
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| 144 | |
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[3652ad35] | 145 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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[ac7d5ef0] | 146 | |
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[3652ad35] | 147 | Cpu_table.predriver_hook = NULL; |
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[ac7d5ef0] | 148 | |
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[3a4ae6c] | 149 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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[ac7d5ef0] | 150 | |
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| 151 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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| 152 | |
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| 153 | Cpu_table.do_zero_of_workspace = TRUE; |
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| 154 | |
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[497428a2] | 155 | Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec; |
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[ac7d5ef0] | 156 | |
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| 157 | Cpu_table.interrupt_stack_size = 4096; |
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| 158 | |
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[8cbbe312] | 159 | Cpu_table.extra_mpci_receive_server_stack = 0; |
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[ac7d5ef0] | 160 | |
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| 161 | /* |
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| 162 | * Copy the table |
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| 163 | */ |
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| 164 | |
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| 165 | BSP_Configuration = Configuration; |
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| 166 | |
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| 167 | BSP_Configuration.work_space_start = (void *) |
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| 168 | (RAM_END - BSP_Configuration.work_space_size); |
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| 169 | |
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[3a4ae6c] | 170 | /* |
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| 171 | * Tell libio how many fd's we want and allow it to tweak config |
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| 172 | */ |
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| 173 | |
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| 174 | rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS); |
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[ac7d5ef0] | 175 | } |
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