[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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[03f2154e] | 12 | * COPYRIGHT (c) 1989-1997. |
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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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[3a4ae6c] | 27 | |
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| 28 | #include <string.h> |
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| 29 | #include <fcntl.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 | * The original table from the application and our copy of it with |
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| 36 | * some changes. |
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| 37 | */ |
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| 38 | |
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| 39 | extern rtems_configuration_table Configuration; |
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| 40 | rtems_configuration_table BSP_Configuration; |
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| 41 | |
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| 42 | rtems_cpu_table Cpu_table; |
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| 43 | |
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[3a4ae6c] | 44 | char *rtems_progname; |
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| 45 | |
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[ac7d5ef0] | 46 | /* Initialize whatever libc we are using |
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| 47 | * called from postdriver hook |
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| 48 | */ |
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| 49 | |
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| 50 | void bsp_libc_init() |
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| 51 | { |
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| 52 | extern int end; |
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| 53 | rtems_unsigned32 heap_start; |
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| 54 | |
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| 55 | heap_start = (rtems_unsigned32) &end; |
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| 56 | if (heap_start & (CPU_ALIGNMENT-1)) |
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| 57 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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| 58 | |
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| 59 | RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0); |
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| 60 | |
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[3a4ae6c] | 61 | /* |
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| 62 | * Init the RTEMS libio facility to provide UNIX-like system |
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[634e746] | 63 | * calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc) |
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[3a4ae6c] | 64 | * Uses malloc() to get area for the iops, so must be after malloc init |
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| 65 | */ |
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| 66 | |
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| 67 | rtems_libio_init(); |
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| 68 | |
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[ac7d5ef0] | 69 | /* |
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| 70 | * Set up for the libc handling. |
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| 71 | */ |
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| 72 | |
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| 73 | if (BSP_Configuration.ticks_per_timeslice > 0) |
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| 74 | libc_init(1); /* reentrant if possible */ |
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| 75 | else |
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| 76 | libc_init(0); /* non-reentrant */ |
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[3652ad35] | 77 | } |
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[ac7d5ef0] | 78 | |
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[3652ad35] | 79 | /* |
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| 80 | * Function: bsp_pretasking_hook |
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| 81 | * Created: 95/03/10 |
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| 82 | * |
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| 83 | * Description: |
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| 84 | * BSP pretasking hook. Called just before drivers are initialized. |
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| 85 | * Used to setup libc and install any BSP extensions. |
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| 86 | * |
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| 87 | * NOTES: |
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| 88 | * Must not use libc (to do io) from here, since drivers are |
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| 89 | * not yet initialized. |
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| 90 | * |
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| 91 | */ |
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| 92 | |
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| 93 | void |
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| 94 | bsp_pretasking_hook(void) |
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| 95 | { |
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| 96 | bsp_libc_init(); |
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| 97 | |
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| 98 | #ifdef STACK_CHECKER_ON |
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[ac7d5ef0] | 99 | /* |
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| 100 | * Initialize the stack bounds checker |
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[3652ad35] | 101 | * We can either turn it on here or from the app. |
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[ac7d5ef0] | 102 | */ |
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[3652ad35] | 103 | |
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[ac7d5ef0] | 104 | Stack_check_Initialize(); |
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| 105 | #endif |
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[3652ad35] | 106 | |
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| 107 | #ifdef RTEMS_DEBUG |
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| 108 | rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); |
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| 109 | #endif |
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[ac7d5ef0] | 110 | } |
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[3652ad35] | 111 | |
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[ac7d5ef0] | 112 | |
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[3a4ae6c] | 113 | /* |
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| 114 | * After drivers are setup, register some "filenames" |
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| 115 | * and open stdin, stdout, stderr files |
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| 116 | * |
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| 117 | * Newlib will automatically associate the files with these |
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| 118 | * (it hardcodes the numbers) |
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| 119 | */ |
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| 120 | |
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| 121 | void |
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| 122 | bsp_postdriver_hook(void) |
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| 123 | { |
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| 124 | int stdin_fd, stdout_fd, stderr_fd; |
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[9700578] | 125 | int error_code; |
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| 126 | |
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| 127 | error_code = 'S' << 24 | 'T' << 16; |
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[3a4ae6c] | 128 | |
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[634e746] | 129 | if ((stdin_fd = __rtems_open("/dev/console", O_RDONLY, 0)) == -1) |
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[9700578] | 130 | rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' ); |
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[3a4ae6c] | 131 | |
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[634e746] | 132 | if ((stdout_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1) |
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[9700578] | 133 | rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' ); |
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[3a4ae6c] | 134 | |
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[634e746] | 135 | if ((stderr_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1) |
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[9700578] | 136 | rtems_fatal_error_occurred( error_code | 'D' << 8 | '2' ); |
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[3a4ae6c] | 137 | |
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| 138 | if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2)) |
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[9700578] | 139 | rtems_fatal_error_occurred( error_code | 'I' << 8 | 'O' ); |
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[3a4ae6c] | 140 | } |
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| 141 | |
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| 142 | int main( |
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[ac7d5ef0] | 143 | int argc, |
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| 144 | char **argv, |
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| 145 | char **environp |
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| 146 | ) |
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| 147 | { |
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[497428a2] | 148 | m68k_isr_entry *monitors_vector_table; |
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| 149 | int index; |
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| 150 | void *vbr; |
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[ac7d5ef0] | 151 | |
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[3a4ae6c] | 152 | if ((argc > 0) && argv && argv[0]) |
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| 153 | rtems_progname = argv[0]; |
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| 154 | else |
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| 155 | rtems_progname = "RTEMS"; |
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| 156 | |
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[497428a2] | 157 | monitors_vector_table = (m68k_isr_entry *)0; /* Monitor Vectors are at 0 */ |
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[ac7d5ef0] | 158 | m68k_set_vbr( monitors_vector_table ); |
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| 159 | |
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| 160 | for ( index=2 ; index<=255 ; index++ ) |
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| 161 | M68Kvec[ index ] = monitors_vector_table[ 32 ]; |
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| 162 | |
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| 163 | M68Kvec[ 2 ] = monitors_vector_table[ 2 ]; /* bus error vector */ |
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| 164 | M68Kvec[ 4 ] = monitors_vector_table[ 4 ]; /* breakpoints vector */ |
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| 165 | M68Kvec[ 9 ] = monitors_vector_table[ 9 ]; /* trace vector */ |
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| 166 | |
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| 167 | /* |
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| 168 | * Uncommenting this seems to confuse/break the monitor on this board. |
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| 169 | * It probably assumes the vector table is at 0. |
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| 170 | */ |
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| 171 | |
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| 172 | /* m68k_set_vbr( &M68Kvec ); */ |
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| 173 | |
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| 174 | /* |
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| 175 | * Adjust the VMEbus mode to round-robin. |
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| 176 | */ |
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| 177 | |
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| 178 | /* |
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| 179 | * This is only apparent with the shared memory driver which has not |
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| 180 | * yet been supported on this target. |
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| 181 | */ |
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| 182 | |
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| 183 | m68k_enable_caching(); |
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| 184 | |
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| 185 | /* |
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| 186 | * we only use a hook to get the C library initialized. |
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| 187 | */ |
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| 188 | |
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[3652ad35] | 189 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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[ac7d5ef0] | 190 | |
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[3652ad35] | 191 | Cpu_table.predriver_hook = NULL; |
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[ac7d5ef0] | 192 | |
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[3a4ae6c] | 193 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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[ac7d5ef0] | 194 | |
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| 195 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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| 196 | |
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| 197 | Cpu_table.do_zero_of_workspace = TRUE; |
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| 198 | |
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| 199 | m68k_get_vbr( vbr ); |
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| 200 | Cpu_table.interrupt_vector_table = vbr; |
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| 201 | |
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| 202 | Cpu_table.interrupt_stack_size = 4096; |
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| 203 | |
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[8cbbe312] | 204 | Cpu_table.extra_mpci_receive_server_stack = 0; |
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[ac7d5ef0] | 205 | |
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| 206 | /* |
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| 207 | * Copy the table |
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| 208 | */ |
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| 209 | |
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| 210 | BSP_Configuration = Configuration; |
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| 211 | |
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| 212 | BSP_Configuration.work_space_start = (void *) |
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| 213 | (RAM_END - BSP_Configuration.work_space_size); |
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| 214 | |
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| 215 | /* |
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| 216 | * Add 1 region for Malloc in libc_low |
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| 217 | */ |
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| 218 | |
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[e6d4b1d] | 219 | BSP_Configuration.RTEMS_api_configuration->maximum_regions++; |
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[ac7d5ef0] | 220 | |
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[edd1329f] | 221 | /* |
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| 222 | * Account for the console's resources |
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| 223 | */ |
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| 224 | |
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| 225 | console_reserve_resources( &BSP_Configuration ); |
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| 226 | |
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[ac7d5ef0] | 227 | /* |
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| 228 | * Add 1 extension for newlib libc |
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| 229 | */ |
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| 230 | |
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| 231 | #ifdef RTEMS_NEWLIB |
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| 232 | BSP_Configuration.maximum_extensions++; |
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| 233 | #endif |
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| 234 | |
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| 235 | /* |
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| 236 | * Add another extension if using the stack checker |
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| 237 | */ |
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| 238 | |
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| 239 | #ifdef STACK_CHECKER_ON |
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| 240 | BSP_Configuration.maximum_extensions++; |
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| 241 | #endif |
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| 242 | |
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[3a4ae6c] | 243 | /* |
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| 244 | * Tell libio how many fd's we want and allow it to tweak config |
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| 245 | */ |
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| 246 | |
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| 247 | rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS); |
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| 248 | |
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[ac7d5ef0] | 249 | rtems_initialize_executive( &BSP_Configuration, &Cpu_table ); |
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| 250 | /* does not return */ |
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| 251 | |
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| 252 | /* Clock_exit is done as an atexit() function */ |
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| 253 | |
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| 254 | VME_interrupt_Disable( 0xff ); |
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| 255 | |
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| 256 | /* return like a "normal" subroutine to the monitor */ |
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| 257 | return 0; |
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| 258 | } |
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