[637df35] | 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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[3a4ae6c] | 24 | #include <rtems/libio.h> |
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| 25 | |
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[637df35] | 26 | #include <libcsupport.h> |
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[3a4ae6c] | 27 | #include <z8036.h> |
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| 28 | |
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| 29 | #include <string.h> |
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| 30 | #include <fcntl.h> |
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| 31 | |
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| 32 | #ifdef STACK_CHECKER_ON |
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[637df35] | 33 | #include <stackchk.h> |
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[3a4ae6c] | 34 | #endif |
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[637df35] | 35 | |
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| 36 | /* |
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| 37 | * The original table from the application and our copy of it with |
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| 38 | * some changes. |
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| 39 | */ |
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| 40 | |
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| 41 | extern rtems_configuration_table Configuration; |
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| 42 | rtems_configuration_table BSP_Configuration; |
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| 43 | |
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| 44 | rtems_cpu_table Cpu_table; |
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| 45 | |
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[3a4ae6c] | 46 | char *rtems_progname; |
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| 47 | |
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[637df35] | 48 | /* Initialize whatever libc we are using |
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| 49 | * called from postdriver hook |
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| 50 | */ |
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| 51 | |
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| 52 | void bsp_libc_init() |
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| 53 | { |
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| 54 | rtems_unsigned32 heap_start; |
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| 55 | |
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| 56 | #if 0 |
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| 57 | extern int end; |
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| 58 | heap_start = (rtems_unsigned32) &end; |
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| 59 | #else |
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| 60 | void * sbrk( int ); |
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| 61 | heap_start = (rtems_unsigned32) sbrk( 64 * 1024 + CPU_ALIGNMENT ); |
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| 62 | #endif |
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| 63 | if (heap_start & (CPU_ALIGNMENT-1)) |
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| 64 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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| 65 | |
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| 66 | RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0); |
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| 67 | |
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[3a4ae6c] | 68 | /* |
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| 69 | * Init the RTEMS libio facility to provide UNIX-like system |
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| 70 | * calls for use by newlib (ie: provide __open, __close, etc) |
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| 71 | * Uses malloc() to get area for the iops, so must be after malloc init |
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| 72 | */ |
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| 73 | |
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| 74 | rtems_libio_init(); |
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| 75 | |
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[637df35] | 76 | /* |
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| 77 | * Set up for the libc handling. |
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| 78 | */ |
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| 79 | |
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| 80 | if (BSP_Configuration.ticks_per_timeslice > 0) |
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| 81 | libc_init(1); /* reentrant if possible */ |
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| 82 | else |
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| 83 | libc_init(0); /* non-reentrant */ |
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| 84 | |
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| 85 | /* |
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| 86 | * Initialize the stack bounds checker |
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| 87 | */ |
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| 88 | |
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| 89 | #ifdef STACK_CHECKER_ON |
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| 90 | Stack_check_Initialize(); |
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| 91 | #endif |
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| 92 | |
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| 93 | } |
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[3a4ae6c] | 94 | |
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| 95 | /* |
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| 96 | * After drivers are setup, register some "filenames" |
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| 97 | * and open stdin, stdout, stderr files |
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| 98 | * |
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| 99 | * Newlib will automatically associate the files with these |
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| 100 | * (it hardcodes the numbers) |
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| 101 | */ |
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| 102 | |
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| 103 | void |
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| 104 | bsp_postdriver_hook(void) |
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[637df35] | 105 | { |
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[3a4ae6c] | 106 | int stdin_fd, stdout_fd, stderr_fd; |
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| 107 | |
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| 108 | if ((stdin_fd = __open("/dev/console", O_RDONLY, 0)) == -1) |
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| 109 | rtems_fatal_error_occurred('STD0'); |
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| 110 | |
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| 111 | if ((stdout_fd = __open("/dev/console", O_WRONLY, 0)) == -1) |
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| 112 | rtems_fatal_error_occurred('STD1'); |
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| 113 | |
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| 114 | if ((stderr_fd = __open("/dev/console", O_WRONLY, 0)) == -1) |
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| 115 | rtems_fatal_error_occurred('STD2'); |
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| 116 | |
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| 117 | if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2)) |
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| 118 | rtems_fatal_error_occurred('STIO'); |
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| 119 | } |
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[637df35] | 120 | |
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[3a4ae6c] | 121 | /* This is the original command line passed from DOS */ |
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| 122 | char ** Go32_Argv; |
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[637df35] | 123 | |
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[3a4ae6c] | 124 | int main( |
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| 125 | int argc, |
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| 126 | char **argv, |
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| 127 | char **environp |
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| 128 | ) |
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| 129 | { |
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| 130 | extern void * sbrk( int ); |
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| 131 | extern volatile void _exit( int ); |
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| 132 | |
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| 133 | /* Set up arguments that we can access later */ |
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| 134 | Go32_Argv = argv; |
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| 135 | |
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| 136 | if ((argc > 0) && argv && argv[0]) |
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| 137 | rtems_progname = argv[0]; |
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| 138 | else |
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| 139 | rtems_progname = "RTEMS"; |
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| 140 | |
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| 141 | Cpu_table.pretasking_hook = NULL; |
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| 142 | Cpu_table.predriver_hook = bsp_libc_init; /* RTEMS resources available */ |
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| 143 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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| 144 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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| 145 | Cpu_table.do_zero_of_workspace = TRUE; |
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| 146 | Cpu_table.interrupt_table_segment = 0;/* get_ds(); */ |
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| 147 | Cpu_table.interrupt_table_offset = (void *)0; |
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| 148 | Cpu_table.interrupt_stack_size = 4096; |
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| 149 | Cpu_table.extra_system_initialization_stack = 0; |
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| 150 | |
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| 151 | /* |
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| 152 | * Copy the table |
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| 153 | */ |
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| 154 | BSP_Configuration = Configuration; |
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| 155 | |
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| 156 | BSP_Configuration.work_space_start = sbrk( Configuration.work_space_size ); |
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| 157 | if ( BSP_Configuration.work_space_start == 0 ) { |
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| 158 | /* Big trouble */ |
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| 159 | int write( int, void *, int ); |
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| 160 | char msg[] = "bsp_start() couldn't sbrk() RTEMS work space\n"; |
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| 161 | write( 2, msg, sizeof msg - 1 ); |
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| 162 | _exit( 1 ); |
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| 163 | } |
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| 164 | |
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| 165 | /* |
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| 166 | * Add 1 region for Malloc in libc_low |
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| 167 | */ |
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| 168 | |
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| 169 | BSP_Configuration.maximum_regions++; |
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| 170 | |
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| 171 | /* |
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| 172 | * Add 1 extension for newlib libc |
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| 173 | */ |
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[637df35] | 174 | |
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| 175 | #ifdef RTEMS_NEWLIB |
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[3a4ae6c] | 176 | BSP_Configuration.maximum_extensions++; |
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[637df35] | 177 | #endif |
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| 178 | |
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[3a4ae6c] | 179 | /* |
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| 180 | * Add another extension if using the stack checker |
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| 181 | */ |
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[637df35] | 182 | |
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| 183 | #ifdef STACK_CHECKER_ON |
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[3a4ae6c] | 184 | BSP_Configuration.maximum_extensions++; |
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[637df35] | 185 | #endif |
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| 186 | |
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[3a4ae6c] | 187 | /* |
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| 188 | * Tell libio how many fd's we want and allow it to tweak config |
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| 189 | */ |
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| 190 | |
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| 191 | rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS); |
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| 192 | |
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| 193 | rtems_initialize_executive( &BSP_Configuration, &Cpu_table ); |
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| 194 | /* does not return */ |
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| 195 | |
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| 196 | /* We only return here if the executive has finished. This happens */ |
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| 197 | /* when the task has called exit(). */ |
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| 198 | /* At this point we call _exit() which resides in djgcc. */ |
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| 199 | |
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| 200 | for (;;) |
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| 201 | _exit( 0 ); |
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| 202 | |
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| 203 | /* no cleanup necessary for GO32 */ |
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[637df35] | 204 | |
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[3a4ae6c] | 205 | return 0; |
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[637df35] | 206 | } |
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