[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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| 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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| 26 | #include <libcsupport.h> |
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| 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 | /* |
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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 | |
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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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[ac7d5ef0] | 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 | extern int end; |
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| 55 | rtems_unsigned32 heap_start; |
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| 56 | |
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| 57 | heap_start = (rtems_unsigned32) &end; |
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| 58 | if (heap_start & (CPU_ALIGNMENT-1)) |
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| 59 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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| 60 | |
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| 61 | RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0); |
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| 62 | |
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[3a4ae6c] | 63 | /* |
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| 64 | * Init the RTEMS libio facility to provide UNIX-like system |
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| 65 | * calls for use by newlib (ie: provide __open, __close, etc) |
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| 66 | * Uses malloc() to get area for the iops, so must be after malloc init |
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| 67 | */ |
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| 68 | |
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| 69 | rtems_libio_init(); |
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| 70 | |
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[ac7d5ef0] | 71 | /* |
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| 72 | * Set up for the libc handling. |
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| 73 | */ |
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| 74 | |
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| 75 | if (BSP_Configuration.ticks_per_timeslice > 0) |
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| 76 | libc_init(1); /* reentrant if possible */ |
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| 77 | else |
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| 78 | libc_init(0); /* non-reentrant */ |
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[3652ad35] | 79 | } |
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| 80 | |
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| 81 | /* |
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| 82 | * Function: bsp_pretasking_hook |
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| 83 | * Created: 95/03/10 |
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| 84 | * |
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| 85 | * Description: |
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| 86 | * BSP pretasking hook. Called just before drivers are initialized. |
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| 87 | * Used to setup libc and install any BSP extensions. |
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| 88 | * |
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| 89 | * NOTES: |
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| 90 | * Must not use libc (to do io) from here, since drivers are |
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| 91 | * not yet initialized. |
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| 92 | * |
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| 93 | */ |
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| 94 | |
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| 95 | void |
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| 96 | bsp_pretasking_hook(void) |
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| 97 | { |
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| 98 | bsp_libc_init(); |
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| 99 | |
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| 100 | #ifdef STACK_CHECKER_ON |
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[ac7d5ef0] | 101 | /* |
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| 102 | * Initialize the stack bounds checker |
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[3652ad35] | 103 | * We can either turn it on here or from the app. |
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[ac7d5ef0] | 104 | */ |
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[3652ad35] | 105 | |
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[ac7d5ef0] | 106 | Stack_check_Initialize(); |
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| 107 | #endif |
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[3652ad35] | 108 | |
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| 109 | #ifdef RTEMS_DEBUG |
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| 110 | rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); |
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| 111 | #endif |
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[ac7d5ef0] | 112 | } |
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[3652ad35] | 113 | |
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[ac7d5ef0] | 114 | |
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[3a4ae6c] | 115 | /* |
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| 116 | * After drivers are setup, register some "filenames" |
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| 117 | * and open stdin, stdout, stderr files |
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| 118 | * |
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| 119 | * Newlib will automatically associate the files with these |
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| 120 | * (it hardcodes the numbers) |
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| 121 | */ |
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| 122 | |
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| 123 | void |
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| 124 | bsp_postdriver_hook(void) |
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| 125 | { |
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| 126 | int stdin_fd, stdout_fd, stderr_fd; |
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| 127 | |
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| 128 | if ((stdin_fd = __open("/dev/console", O_RDONLY, 0)) == -1) |
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| 129 | rtems_fatal_error_occurred('STD0'); |
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| 130 | |
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| 131 | if ((stdout_fd = __open("/dev/console", O_WRONLY, 0)) == -1) |
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| 132 | rtems_fatal_error_occurred('STD1'); |
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| 133 | |
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| 134 | if ((stderr_fd = __open("/dev/console", O_WRONLY, 0)) == -1) |
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| 135 | rtems_fatal_error_occurred('STD2'); |
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| 136 | |
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| 137 | if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2)) |
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| 138 | rtems_fatal_error_occurred('STIO'); |
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| 139 | } |
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| 140 | |
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| 141 | int main( |
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[ac7d5ef0] | 142 | int argc, |
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| 143 | char **argv, |
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| 144 | char **environp |
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| 145 | ) |
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| 146 | { |
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[3a4ae6c] | 147 | if ((argc > 0) && argv && argv[0]) |
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| 148 | rtems_progname = argv[0]; |
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| 149 | else |
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| 150 | rtems_progname = "RTEMS"; |
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| 151 | |
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[ac7d5ef0] | 152 | /* set node number in SQSIO4 CTL REG */ |
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| 153 | |
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| 154 | *((rtems_unsigned32 *)0xc00000b0) = |
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| 155 | (Configuration.User_multiprocessing_table) ? |
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| 156 | Configuration.User_multiprocessing_table->node : 0; |
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| 157 | |
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| 158 | Prcb = get_prcb(); |
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| 159 | Ctl_tbl = Prcb->control_tbl; |
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| 160 | |
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| 161 | /* following configures the data breakpoint (which must be set |
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| 162 | * before this is executed) to break on writes only. |
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| 163 | */ |
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| 164 | |
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| 165 | Ctl_tbl->bpcon &= ~0x00cc0000; |
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| 166 | i960_reload_ctl_group( 6 ); |
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| 167 | |
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| 168 | /* bit 31 of the Register Cache Control can be set to |
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| 169 | * enable an alternative caching algorithm. It does |
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| 170 | * not appear to help RTEMS. |
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| 171 | */ |
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| 172 | |
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| 173 | /* Configure Number of Register Caches */ |
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| 174 | |
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| 175 | Prcb->reg_cache_cfg = 8; |
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| 176 | i960_soft_reset( Prcb ); |
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| 177 | |
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| 178 | /* |
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| 179 | * we do not use the pretasking_hook. |
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| 180 | */ |
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| 181 | |
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[3652ad35] | 182 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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[ac7d5ef0] | 183 | |
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[3652ad35] | 184 | Cpu_table.predriver_hook = NULL; |
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[ac7d5ef0] | 185 | |
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[3a4ae6c] | 186 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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[ac7d5ef0] | 187 | |
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| 188 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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| 189 | |
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| 190 | Cpu_table.do_zero_of_workspace = TRUE; |
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| 191 | |
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| 192 | Cpu_table.interrupt_stack_size = 4096; |
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| 193 | |
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| 194 | Cpu_table.extra_system_initialization_stack = 0; |
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| 195 | |
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| 196 | Cpu_table.Prcb = Prcb; |
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| 197 | |
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| 198 | /* |
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| 199 | * Copy the table |
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| 200 | */ |
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| 201 | |
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| 202 | BSP_Configuration = Configuration; |
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| 203 | |
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| 204 | /* |
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| 205 | * Add 1 region for the RTEMS Malloc |
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| 206 | */ |
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| 207 | |
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| 208 | BSP_Configuration.maximum_regions++; |
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| 209 | |
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| 210 | /* |
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| 211 | * Add 1 extension for newlib libc |
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| 212 | */ |
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| 213 | |
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| 214 | #ifdef RTEMS_NEWLIB |
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| 215 | BSP_Configuration.maximum_extensions++; |
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| 216 | #endif |
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| 217 | |
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| 218 | /* |
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| 219 | * Add another extension if using the stack checker |
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| 220 | */ |
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| 221 | |
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| 222 | #ifdef STACK_CHECKER_ON |
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| 223 | BSP_Configuration.maximum_extensions++; |
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| 224 | #endif |
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| 225 | |
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[3a4ae6c] | 226 | /* |
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| 227 | * Tell libio how many fd's we want and allow it to tweak config |
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| 228 | */ |
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| 229 | |
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| 230 | rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS); |
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| 231 | |
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[ac7d5ef0] | 232 | BSP_Configuration.work_space_start = (void *) |
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| 233 | (RAM_END - BSP_Configuration.work_space_size); |
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| 234 | |
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| 235 | rtems_initialize_executive( &BSP_Configuration, &Cpu_table ); |
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| 236 | /* does not return */ |
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| 237 | |
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| 238 | bsp_cleanup(); |
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| 239 | |
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| 240 | return 0; |
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| 241 | |
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| 242 | } |
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