[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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| 26 | #include <libcsupport.h> |
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| 27 | |
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| 28 | #include <string.h> |
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| 29 | |
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| 30 | #ifdef STACK_CHECKER_ON |
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| 31 | #include <stackchk.h> |
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| 32 | #endif |
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[ac7d5ef0] | 33 | |
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| 34 | /* |
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| 35 | * The original table from the application and our copy of it with |
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| 36 | * some changes. |
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| 37 | */ |
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| 38 | |
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| 39 | extern rtems_configuration_table Configuration; |
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| 40 | |
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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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[3a4ae6c] | 45 | char *rtems_progname; |
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| 46 | |
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[ac7d5ef0] | 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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| 50 | |
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| 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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| 55 | |
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| 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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| 59 | |
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| 60 | RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0); |
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| 61 | |
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[3a4ae6c] | 62 | /* |
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| 63 | * Init the RTEMS libio facility to provide UNIX-like system |
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[634e746] | 64 | * calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc) |
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[3a4ae6c] | 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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[ac7d5ef0] | 70 | /* |
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| 71 | * Set up for the libc handling. |
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| 72 | */ |
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| 73 | |
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| 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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[3652ad35] | 78 | } |
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| 79 | |
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| 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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[ac7d5ef0] | 100 | /* |
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| 101 | * Initialize the stack bounds checker |
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[3652ad35] | 102 | * We can either turn it on here or from the app. |
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[ac7d5ef0] | 103 | */ |
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[3652ad35] | 104 | |
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[ac7d5ef0] | 105 | Stack_check_Initialize(); |
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| 106 | #endif |
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[3652ad35] | 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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[ac7d5ef0] | 111 | } |
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[3652ad35] | 112 | |
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[ac7d5ef0] | 113 | |
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[3a4ae6c] | 114 | /* |
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[8f95b5f] | 115 | * Use the shared bsp_postdriver_hook() implementation |
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[3a4ae6c] | 116 | */ |
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| 117 | |
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[8f95b5f] | 118 | void bsp_postdriver_hook(void); |
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[3a4ae6c] | 119 | |
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[e2a2ec60] | 120 | void bsp_start( void ) |
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[ac7d5ef0] | 121 | { |
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| 122 | /* set node number in SQSIO4 CTL REG */ |
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| 123 | |
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| 124 | *((rtems_unsigned32 *)0xc00000b0) = |
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| 125 | (Configuration.User_multiprocessing_table) ? |
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| 126 | Configuration.User_multiprocessing_table->node : 0; |
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| 127 | |
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| 128 | Prcb = get_prcb(); |
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| 129 | Ctl_tbl = Prcb->control_tbl; |
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| 130 | |
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| 131 | /* following configures the data breakpoint (which must be set |
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| 132 | * before this is executed) to break on writes only. |
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| 133 | */ |
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| 134 | |
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| 135 | Ctl_tbl->bpcon &= ~0x00cc0000; |
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| 136 | i960_reload_ctl_group( 6 ); |
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| 137 | |
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| 138 | /* bit 31 of the Register Cache Control can be set to |
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| 139 | * enable an alternative caching algorithm. It does |
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| 140 | * not appear to help RTEMS. |
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| 141 | */ |
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| 142 | |
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| 143 | /* Configure Number of Register Caches */ |
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| 144 | |
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| 145 | Prcb->reg_cache_cfg = 8; |
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| 146 | i960_soft_reset( Prcb ); |
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| 147 | |
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| 148 | /* |
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| 149 | * we do not use the pretasking_hook. |
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| 150 | */ |
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| 151 | |
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[3652ad35] | 152 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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[ac7d5ef0] | 153 | |
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[3652ad35] | 154 | Cpu_table.predriver_hook = NULL; |
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[ac7d5ef0] | 155 | |
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[3a4ae6c] | 156 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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[ac7d5ef0] | 157 | |
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| 158 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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| 159 | |
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| 160 | Cpu_table.do_zero_of_workspace = TRUE; |
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| 161 | |
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| 162 | Cpu_table.interrupt_stack_size = 4096; |
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| 163 | |
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[8cbbe312] | 164 | Cpu_table.extra_mpci_receive_server_stack = 0; |
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[ac7d5ef0] | 165 | |
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| 166 | Cpu_table.Prcb = Prcb; |
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| 167 | |
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| 168 | /* |
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| 169 | * Copy the table |
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| 170 | */ |
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| 171 | |
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| 172 | BSP_Configuration = Configuration; |
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| 173 | |
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[3a4ae6c] | 174 | /* |
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| 175 | * Tell libio how many fd's we want and allow it to tweak config |
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| 176 | */ |
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| 177 | |
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| 178 | rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS); |
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| 179 | |
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[ac7d5ef0] | 180 | BSP_Configuration.work_space_start = (void *) |
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| 181 | (RAM_END - BSP_Configuration.work_space_size); |
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| 182 | } |
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