[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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[60b791ad] | 12 | * COPYRIGHT (c) 1989-1998. |
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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 | |
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[ac7d5ef0] | 30 | /* |
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| 31 | * The original table from the application and our copy of it with |
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| 32 | * some changes. |
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| 33 | */ |
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| 34 | |
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| 35 | extern rtems_configuration_table Configuration; |
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| 36 | |
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| 37 | rtems_configuration_table BSP_Configuration; |
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| 38 | |
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| 39 | rtems_cpu_table Cpu_table; |
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| 40 | |
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[3a4ae6c] | 41 | char *rtems_progname; |
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| 42 | |
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[ac7d5ef0] | 43 | /* Initialize whatever libc we are using |
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| 44 | * called from postdriver hook |
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| 45 | */ |
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| 46 | |
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| 47 | void bsp_libc_init() |
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| 48 | { |
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| 49 | extern int end; |
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| 50 | rtems_unsigned32 heap_start; |
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| 51 | |
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| 52 | heap_start = (rtems_unsigned32) &end; |
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| 53 | if (heap_start & (CPU_ALIGNMENT-1)) |
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| 54 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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| 55 | |
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| 56 | /* |
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| 57 | * The last parameter to RTEMS_Malloc_Initialize is the "chunk" |
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| 58 | * size which a multiple of will be requested on each sbrk() |
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| 59 | * call by malloc(). A value of 0 indicates that sbrk() should |
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| 60 | * not be called to extend the heap. |
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| 61 | */ |
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| 62 | |
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| 63 | RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0); |
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| 64 | |
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[3a4ae6c] | 65 | /* |
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| 66 | * Init the RTEMS libio facility to provide UNIX-like system |
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[634e746] | 67 | * calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc) |
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[3a4ae6c] | 68 | * Uses malloc() to get area for the iops, so must be after malloc init |
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| 69 | */ |
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| 70 | |
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| 71 | rtems_libio_init(); |
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| 72 | |
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[ac7d5ef0] | 73 | /* |
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| 74 | * Set up for the libc handling. |
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| 75 | */ |
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| 76 | |
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| 77 | if (BSP_Configuration.ticks_per_timeslice > 0) |
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| 78 | libc_init(1); /* reentrant if possible */ |
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| 79 | else |
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| 80 | libc_init(0); /* non-reentrant */ |
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[3652ad35] | 81 | } |
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[ac7d5ef0] | 82 | |
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[3652ad35] | 83 | /* |
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| 84 | * Function: bsp_pretasking_hook |
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| 85 | * Created: 95/03/10 |
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| 86 | * |
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| 87 | * Description: |
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| 88 | * BSP pretasking hook. Called just before drivers are initialized. |
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| 89 | * Used to setup libc and install any BSP extensions. |
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| 90 | * |
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| 91 | * NOTES: |
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| 92 | * Must not use libc (to do io) from here, since drivers are |
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| 93 | * not yet initialized. |
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| 94 | * |
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| 95 | */ |
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| 96 | |
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| 97 | void |
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| 98 | bsp_pretasking_hook(void) |
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| 99 | { |
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| 100 | bsp_libc_init(); |
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| 101 | |
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| 102 | #ifdef RTEMS_DEBUG |
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| 103 | rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); |
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| 104 | #endif |
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[ac7d5ef0] | 105 | } |
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[3652ad35] | 106 | |
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[ac7d5ef0] | 107 | |
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[3a4ae6c] | 108 | /* |
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[8f95b5f] | 109 | * Use the shared bsp_postdriver_hook() implementation |
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[3a4ae6c] | 110 | */ |
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| 111 | |
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[8f95b5f] | 112 | void bsp_postdriver_hook(void); |
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[3a4ae6c] | 113 | |
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[3652ad35] | 114 | int bsp_start( |
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[ac7d5ef0] | 115 | int argc, |
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| 116 | char **argv, |
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| 117 | char **environp |
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| 118 | ) |
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| 119 | { |
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[3a4ae6c] | 120 | if ((argc > 0) && argv && argv[0]) |
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| 121 | rtems_progname = argv[0]; |
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| 122 | else |
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| 123 | rtems_progname = "RTEMS"; |
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| 124 | |
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[ac7d5ef0] | 125 | /* |
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| 126 | * Allocate the memory for the RTEMS Work Space. This can come from |
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| 127 | * a variety of places: hard coded address, malloc'ed from outside |
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| 128 | * RTEMS world (e.g. simulator or primitive memory manager), or (as |
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| 129 | * typically done by stock BSPs) by subtracting the required amount |
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| 130 | * of work space from the last physical address on the CPU board. |
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| 131 | */ |
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| 132 | |
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| 133 | /* |
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| 134 | * Copy the Configuration Table .. so we can change it |
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| 135 | */ |
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| 136 | |
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| 137 | BSP_Configuration = Configuration; |
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| 138 | |
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[3a4ae6c] | 139 | /* |
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| 140 | * Tell libio how many fd's we want and allow it to tweak config |
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| 141 | */ |
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| 142 | |
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| 143 | rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS); |
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| 144 | |
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[ac7d5ef0] | 145 | /* |
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| 146 | * Need to "allocate" the memory for the RTEMS Workspace and |
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| 147 | * tell the RTEMS configuration where it is. This memory is |
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| 148 | * not malloc'ed. It is just "pulled from the air". |
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| 149 | */ |
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| 150 | |
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| 151 | BSP_Configuration.work_space_start = (void *) 0; |
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| 152 | |
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| 153 | /* |
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| 154 | * initialize the CPU table for this BSP |
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| 155 | */ |
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| 156 | |
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| 157 | /* |
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| 158 | * we do not use the pretasking_hook |
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| 159 | */ |
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| 160 | |
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[3652ad35] | 161 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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[ac7d5ef0] | 162 | |
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[3652ad35] | 163 | Cpu_table.predriver_hook = NULL; |
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[ac7d5ef0] | 164 | |
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[3a4ae6c] | 165 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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[ac7d5ef0] | 166 | |
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| 167 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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| 168 | |
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| 169 | Cpu_table.do_zero_of_workspace = TRUE; |
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| 170 | |
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| 171 | Cpu_table.interrupt_stack_size = 4096; |
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| 172 | |
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[8cbbe312] | 173 | Cpu_table.extra_mpci_receive_server_stack = 0; |
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[ac7d5ef0] | 174 | |
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| 175 | /* |
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| 176 | * Don't forget the other CPU Table entries. |
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| 177 | */ |
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| 178 | |
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| 179 | /* |
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| 180 | * Start RTEMS |
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| 181 | */ |
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| 182 | |
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| 183 | rtems_initialize_executive( &BSP_Configuration, &Cpu_table ); |
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| 184 | |
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| 185 | bsp_cleanup(); |
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| 186 | |
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| 187 | return 0; |
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| 188 | } |
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