[752cd8f] | 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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| 12 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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| 13 | * On-Line Applications Research Corporation (OAR). |
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| 14 | * All rights assigned to U.S. Government, 1994. |
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| 15 | * |
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| 16 | * This material may be reproduced by or for the U.S. Government pursuant |
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| 17 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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| 18 | * notice must appear in all copies of this file and its derivatives. |
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| 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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[fe6ef776] | 24 | #include <rtems/libio.h> |
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| 25 | |
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[752cd8f] | 26 | #include <libcsupport.h> |
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[fe6ef776] | 27 | |
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| 28 | #include <fcntl.h> |
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[752cd8f] | 29 | |
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[fe6ef776] | 30 | #ifdef PRINTON |
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| 31 | extern char inbyte(void); |
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[752cd8f] | 32 | extern void outbyte(char); |
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[fe6ef776] | 33 | #endif |
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[752cd8f] | 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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[fe6ef776] | 45 | char *rtems_progname; |
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| 46 | |
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[752cd8f] | 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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[fe6ef776] | 50 | |
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[752cd8f] | 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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[fe6ef776] | 55 | |
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[752cd8f] | 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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[fe6ef776] | 59 | |
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[752cd8f] | 60 | RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0); |
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[fe6ef776] | 61 | |
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| 62 | /* |
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| 63 | * Init the RTEMS libio facility to provide UNIX-like system |
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| 64 | * calls for use by newlib (ie: provide __open, __close, etc) |
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| 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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[752cd8f] | 70 | /* |
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| 71 | * Set up for the libc handling. |
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| 72 | */ |
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[fe6ef776] | 73 | |
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[752cd8f] | 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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[fe6ef776] | 78 | } |
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[752cd8f] | 79 | |
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[fe6ef776] | 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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[752cd8f] | 100 | /* |
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| 101 | * Initialize the stack bounds checker |
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[fe6ef776] | 102 | * We can either turn it on here or from the app. |
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[752cd8f] | 103 | */ |
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[fe6ef776] | 104 | |
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[752cd8f] | 105 | Stack_check_Initialize(); |
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| 106 | #endif |
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[fe6ef776] | 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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[752cd8f] | 113 | |
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[fe6ef776] | 114 | /* |
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| 115 | * After drivers are setup, register some "filenames" |
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| 116 | * and open stdin, stdout, stderr files |
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| 117 | * |
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| 118 | * Newlib will automatically associate the files with these |
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| 119 | * (it hardcodes the numbers) |
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| 120 | */ |
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| 121 | |
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| 122 | void |
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| 123 | bsp_postdriver_hook(void) |
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| 124 | { |
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| 125 | int stdin_fd, stdout_fd, stderr_fd; |
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| 126 | int error_code; |
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| 127 | |
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| 128 | error_code = 'S' << 24 | 'T' << 16; |
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| 129 | |
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| 130 | if ((stdin_fd = __open("/dev/console", O_RDONLY, 0)) == -1) |
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| 131 | rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' ); |
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| 132 | |
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| 133 | if ((stdout_fd = __open("/dev/console", O_WRONLY, 0)) == -1) |
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| 134 | rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' ); |
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| 135 | |
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| 136 | if ((stderr_fd = __open("/dev/console", O_WRONLY, 0)) == -1) |
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| 137 | rtems_fatal_error_occurred( error_code | 'D' << 8 | '2' ); |
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| 138 | |
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| 139 | if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2)) |
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| 140 | rtems_fatal_error_occurred( error_code | 'I' << 8 | 'O' ); |
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[752cd8f] | 141 | } |
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| 142 | |
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[fe6ef776] | 143 | |
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| 144 | int main( |
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[752cd8f] | 145 | int argc, |
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| 146 | char **argv, |
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| 147 | char **environp |
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| 148 | ) |
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| 149 | { |
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| 150 | |
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[fe6ef776] | 151 | #ifdef PRINTON |
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[752cd8f] | 152 | outbyte('a'); |
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| 153 | outbyte('b'); |
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| 154 | outbyte('c'); |
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| 155 | outbyte ('S'); |
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| 156 | #endif |
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| 157 | |
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[fe6ef776] | 158 | if ((argc > 0) && argv && argv[0]) |
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| 159 | rtems_progname = argv[0]; |
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| 160 | else |
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| 161 | rtems_progname = "RTEMS"; |
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| 162 | |
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[752cd8f] | 163 | /* |
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| 164 | * we do not use the pretasking_hook. |
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| 165 | */ |
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| 166 | |
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[fe6ef776] | 167 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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| 168 | |
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| 169 | Cpu_table.predriver_hook = NULL; |
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| 170 | |
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| 171 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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| 172 | |
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[752cd8f] | 173 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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[fe6ef776] | 174 | |
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[752cd8f] | 175 | Cpu_table.do_zero_of_workspace = TRUE; |
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[fe6ef776] | 176 | |
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[752cd8f] | 177 | Cpu_table.interrupt_table_segment = get_ds(); |
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[fe6ef776] | 178 | |
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[752cd8f] | 179 | Cpu_table.interrupt_table_offset = (void *)Interrupt_descriptor_table; |
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[fe6ef776] | 180 | |
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[752cd8f] | 181 | Cpu_table.interrupt_stack_size = 4096; |
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[fe6ef776] | 182 | |
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| 183 | Cpu_table.extra_mpci_receive_server_stack = 0; |
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[752cd8f] | 184 | |
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| 185 | /* |
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| 186 | * Copy the table |
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| 187 | */ |
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| 188 | |
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| 189 | BSP_Configuration = Configuration; |
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| 190 | |
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| 191 | BSP_Configuration.work_space_start = (void *) |
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| 192 | RAM_END - BSP_Configuration.work_space_size; |
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| 193 | |
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| 194 | |
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| 195 | #ifdef SPRINTON |
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| 196 | sprintf( x_buffer, "ram end : %u, work_space_size: %d\n", |
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| 197 | RAM_END , BSP_Configuration.work_space_size ); |
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| 198 | do { |
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| 199 | outbyte ( x_buffer[i] ); |
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| 200 | } while ( x_buffer[i++] != '\n'); |
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| 201 | #endif |
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| 202 | |
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| 203 | /* |
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| 204 | * Add 1 region for Malloc in libc_low |
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| 205 | */ |
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| 206 | |
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[fe6ef776] | 207 | BSP_Configuration.RTEMS_api_configuration->maximum_regions++; |
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[752cd8f] | 208 | |
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| 209 | /* |
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| 210 | * Add 1 extension for newlib libc |
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| 211 | */ |
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| 212 | |
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| 213 | #ifdef RTEMS_NEWLIB |
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| 214 | BSP_Configuration.maximum_extensions++; |
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| 215 | #endif |
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| 216 | |
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| 217 | /* |
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| 218 | * Add another extension if using the stack checker |
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| 219 | */ |
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| 220 | |
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| 221 | #ifdef STACK_CHECKER_ON |
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| 222 | BSP_Configuration.maximum_extensions++; |
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| 223 | #endif |
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| 224 | |
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| 225 | rtems_initialize_executive( &BSP_Configuration, &Cpu_table ); |
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| 226 | /* does not return */ |
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[fe6ef776] | 227 | /* no cleanup necessary for i386ex */ |
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[752cd8f] | 228 | for (;;); /* was return 0 to go to the debug monitor */ |
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| 229 | } |
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