[3235ad9] | 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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[5c491aef] | 12 | * Author: Andrew Bray <andy@i-cubed.co.uk> |
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[3235ad9] | 13 | * |
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| 14 | * COPYRIGHT (c) 1995 by i-cubed ltd. |
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| 15 | * |
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| 16 | * To anyone who acknowledges that this file is provided "AS IS" |
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| 17 | * without any express or implied warranty: |
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| 18 | * permission to use, copy, modify, and distribute this file |
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| 19 | * for any purpose is hereby granted without fee, provided that |
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| 20 | * the above copyright notice and this notice appears in all |
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| 21 | * copies, and that the name of i-cubed limited not be used in |
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| 22 | * advertising or publicity pertaining to distribution of the |
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| 23 | * software without specific, written prior permission. |
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| 24 | * i-cubed limited makes no representations about the suitability |
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| 25 | * of this software for any purpose. |
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| 26 | * |
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| 27 | * Derived from c/src/lib/libbsp/no_cpu/no_bsp/startup/bspstart.c: |
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| 28 | * |
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[60b791ad] | 29 | * COPYRIGHT (c) 1989-1998. |
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[3235ad9] | 30 | * On-Line Applications Research Corporation (OAR). |
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[03f2154e] | 31 | * Copyright assigned to U.S. Government, 1994. |
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[3235ad9] | 32 | * |
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[98e4ebf5] | 33 | * The license and distribution terms for this file may be |
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| 34 | * found in the file LICENSE in this distribution or at |
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[03f2154e] | 35 | * http://www.OARcorp.com/rtems/license.html. |
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[3235ad9] | 36 | * |
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[eb5a7e07] | 37 | * $Id$ |
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[3235ad9] | 38 | */ |
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| 39 | |
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| 40 | #include <bsp.h> |
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[3a4ae6c] | 41 | #include <rtems/libio.h> |
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| 42 | |
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[3235ad9] | 43 | #include <libcsupport.h> |
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[3a4ae6c] | 44 | |
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| 45 | #include <string.h> |
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| 46 | |
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| 47 | #ifdef STACK_CHECKER_ON |
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| 48 | #include <stackchk.h> |
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| 49 | #endif |
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[3235ad9] | 50 | |
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| 51 | /* |
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| 52 | * The original table from the application and our copy of it with |
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| 53 | * some changes. |
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| 54 | */ |
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| 55 | |
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| 56 | extern rtems_configuration_table Configuration; |
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| 57 | |
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| 58 | rtems_configuration_table BSP_Configuration; |
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| 59 | |
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| 60 | rtems_cpu_table Cpu_table; |
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| 61 | |
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[3a4ae6c] | 62 | char *rtems_progname; |
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| 63 | |
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[3235ad9] | 64 | /* Initialize whatever libc we are using |
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| 65 | * called from postdriver hook |
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| 66 | */ |
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| 67 | |
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| 68 | void bsp_libc_init() |
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| 69 | { |
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| 70 | extern int _end; |
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| 71 | rtems_unsigned32 heap_start; |
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| 72 | |
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| 73 | heap_start = (rtems_unsigned32) &_end; |
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| 74 | if (heap_start & (CPU_ALIGNMENT-1)) |
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| 75 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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| 76 | |
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| 77 | /* |
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| 78 | * The last parameter to RTEMS_Malloc_Initialize is the "chunk" |
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| 79 | * size which a multiple of will be requested on each sbrk() |
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| 80 | * call by malloc(). A value of 0 indicates that sbrk() should |
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| 81 | * not be called to extend the heap. |
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| 82 | */ |
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| 83 | |
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| 84 | RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0); |
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| 85 | |
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[3a4ae6c] | 86 | /* |
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| 87 | * Init the RTEMS libio facility to provide UNIX-like system |
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[634e746] | 88 | * calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc) |
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[3a4ae6c] | 89 | * Uses malloc() to get area for the iops, so must be after malloc init |
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| 90 | */ |
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| 91 | |
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| 92 | rtems_libio_init(); |
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| 93 | |
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[3235ad9] | 94 | /* |
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| 95 | * Set up for the libc handling. |
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| 96 | */ |
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| 97 | |
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| 98 | if (BSP_Configuration.ticks_per_timeslice > 0) |
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| 99 | libc_init(1); /* reentrant if possible */ |
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| 100 | else |
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| 101 | libc_init(0); /* non-reentrant */ |
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| 102 | |
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[3652ad35] | 103 | } |
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| 104 | |
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| 105 | /* |
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| 106 | * Function: bsp_pretasking_hook |
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| 107 | * Created: 95/03/10 |
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| 108 | * |
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| 109 | * Description: |
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| 110 | * BSP pretasking hook. Called just before drivers are initialized. |
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| 111 | * Used to setup libc and install any BSP extensions. |
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| 112 | * |
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| 113 | * NOTES: |
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| 114 | * Must not use libc (to do io) from here, since drivers are |
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| 115 | * not yet initialized. |
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| 116 | * |
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| 117 | */ |
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| 118 | |
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| 119 | void |
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| 120 | bsp_pretasking_hook(void) |
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| 121 | { |
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| 122 | bsp_libc_init(); |
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| 123 | |
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| 124 | #ifdef STACK_CHECKER_ON |
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[3235ad9] | 125 | /* |
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| 126 | * Initialize the stack bounds checker |
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[3652ad35] | 127 | * We can either turn it on here or from the app. |
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[3235ad9] | 128 | */ |
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[3652ad35] | 129 | |
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[3235ad9] | 130 | Stack_check_Initialize(); |
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| 131 | #endif |
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[3652ad35] | 132 | |
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| 133 | #ifdef RTEMS_DEBUG |
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| 134 | rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); |
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| 135 | #endif |
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[3235ad9] | 136 | } |
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[3652ad35] | 137 | |
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[3235ad9] | 138 | |
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[3a4ae6c] | 139 | /* |
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[8f95b5f] | 140 | * Use the shared bsp_postdriver_hook() implementation |
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[3a4ae6c] | 141 | */ |
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| 142 | |
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[8f95b5f] | 143 | void bsp_postdriver_hook(void); |
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| 144 | |
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[3a4ae6c] | 145 | |
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[e2a2ec60] | 146 | void bsp_start( void ) |
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[3235ad9] | 147 | { |
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| 148 | /* |
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| 149 | * Allocate the memory for the RTEMS Work Space. This can come from |
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| 150 | * a variety of places: hard coded address, malloc'ed from outside |
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| 151 | * RTEMS world (e.g. simulator or primitive memory manager), or (as |
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| 152 | * typically done by stock BSPs) by subtracting the required amount |
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| 153 | * of work space from the last physical address on the CPU board. |
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| 154 | */ |
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| 155 | |
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| 156 | /* |
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| 157 | * Copy the Configuration Table .. so we can change it |
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| 158 | */ |
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| 159 | |
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| 160 | BSP_Configuration = Configuration; |
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| 161 | |
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[3a4ae6c] | 162 | /* |
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| 163 | * Tell libio how many fd's we want and allow it to tweak config |
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| 164 | */ |
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| 165 | |
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| 166 | rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS); |
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| 167 | |
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[3235ad9] | 168 | /* |
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| 169 | * Need to "allocate" the memory for the RTEMS Workspace and |
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| 170 | * tell the RTEMS configuration where it is. This memory is |
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| 171 | * not malloc'ed. It is just "pulled from the air". |
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| 172 | */ |
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| 173 | |
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| 174 | BSP_Configuration.work_space_start = (void *) |
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| 175 | RAM_END - BSP_Configuration.work_space_size; |
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| 176 | |
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| 177 | /* |
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| 178 | * initialize the CPU table for this BSP |
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| 179 | */ |
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| 180 | |
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[3652ad35] | 181 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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[3235ad9] | 182 | |
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[3652ad35] | 183 | Cpu_table.predriver_hook = NULL; |
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[3235ad9] | 184 | |
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[3a4ae6c] | 185 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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[3235ad9] | 186 | |
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| 187 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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| 188 | |
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| 189 | Cpu_table.do_zero_of_workspace = TRUE; |
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| 190 | |
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| 191 | Cpu_table.interrupt_stack_size = 4 * 1024; |
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| 192 | |
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[8cbbe312] | 193 | Cpu_table.extra_mpci_receive_server_stack = 0; |
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[3235ad9] | 194 | |
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| 195 | /* |
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| 196 | * Don't forget the other CPU Table entries. |
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| 197 | */ |
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| 198 | |
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| 199 | Cpu_table.clicks_per_usec = 10; |
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| 200 | |
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| 201 | Cpu_table.serial_per_sec = 10000000; |
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| 202 | |
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| 203 | Cpu_table.serial_external_clock = 1; |
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| 204 | |
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| 205 | Cpu_table.serial_xon_xoff = 0; |
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| 206 | |
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| 207 | Cpu_table.serial_cts_rts = 1; |
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| 208 | |
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| 209 | Cpu_table.serial_rate = 9600; |
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| 210 | |
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| 211 | Cpu_table.timer_average_overhead = 2; |
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| 212 | |
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| 213 | Cpu_table.timer_least_valid = 3; |
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| 214 | } |
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