forked from Imagelibrary/rtems
210 lines
4.8 KiB
C
210 lines
4.8 KiB
C
/* bsp_start()
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*
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* This routine starts the application. It includes application,
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* board, and monitor specific initialization and configuration.
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* The generic CPU dependent initialization has been performed
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* before this routine is invoked.
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*
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* INPUT: NONE
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*
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* OUTPUT: NONE
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*
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* COPYRIGHT (c) 1989-1998.
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* On-Line Applications Research Corporation (OAR).
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* Copyright assigned to U.S. Government, 1994.
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.OARcorp.com/rtems/license.html.
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*
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* Modifications of respective RTEMS file: COPYRIGHT (c) 1994.
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* EISCAT Scientific Association. M.Savitski
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*
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* This material is a part of the MVME162 Board Support Package
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* for the RTEMS executive. Its licensing policies are those of the
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* RTEMS above.
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*
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* $Id$
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*/
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#include <bsp.h>
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#include <rtems/libio.h>
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#include <page_table.h>
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#include <libcsupport.h>
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#include <string.h>
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#ifdef STACK_CHECKER_ON
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#include <stackchk.h>
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#endif
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/*
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* The original table from the application and our copy of it with
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* some changes.
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*/
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extern rtems_configuration_table Configuration;
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rtems_configuration_table BSP_Configuration;
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rtems_cpu_table Cpu_table;
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char *rtems_progname;
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/* Initialize whatever libc we are using
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* called from postdriver hook
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*/
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void bsp_libc_init()
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{
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extern int end;
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rtems_unsigned32 heap_start;
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heap_start = (rtems_unsigned32) &end;
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if (heap_start & (CPU_ALIGNMENT-1))
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heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
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RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
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/*
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* Init the RTEMS libio facility to provide UNIX-like system
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* calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
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* Uses malloc() to get area for the iops, so must be after malloc init
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*/
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rtems_libio_init();
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/*
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* Set up for the libc handling.
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*/
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if (BSP_Configuration.ticks_per_timeslice > 0)
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libc_init(1); /* reentrant if possible */
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else
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libc_init(0); /* non-reentrant */
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}
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/*
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* Function: bsp_pretasking_hook
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* Created: 95/03/10
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*
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* Description:
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* BSP pretasking hook. Called just before drivers are initialized.
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* Used to setup libc and install any BSP extensions.
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*
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* NOTES:
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* Must not use libc (to do io) from here, since drivers are
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* not yet initialized.
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*
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*/
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void
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bsp_pretasking_hook(void)
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{
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bsp_libc_init();
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#ifdef STACK_CHECKER_ON
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/*
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* Initialize the stack bounds checker
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* We can either turn it on here or from the app.
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*/
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Stack_check_Initialize();
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#endif
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#ifdef RTEMS_DEBUG
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rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
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#endif
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}
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/*
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* Use the shared bsp_postdriver_hook() implementation
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*/
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void bsp_postdriver_hook(void);
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void bsp_start( void )
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{
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m68k_isr_entry *monitors_vector_table;
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int index;
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/*
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* 162Bug Vectors are at 0xFFE00000
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* 162Bug Vectors on LX are at 0x00000000
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*/
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#if defined(mvme162lx)
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monitors_vector_table = (m68k_isr_entry *)0x00000000;
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#else
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monitors_vector_table = (m68k_isr_entry *)0xFFE00000;
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#endif
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m68k_set_vbr( monitors_vector_table );
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for ( index=2 ; index<=255 ; index++ )
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M68Kvec[ index ] = monitors_vector_table[ 32 ];
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M68Kvec[ 2 ] = monitors_vector_table[ 2 ]; /* bus error vector */
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M68Kvec[ 4 ] = monitors_vector_table[ 4 ]; /* breakpoints vector */
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M68Kvec[ 9 ] = monitors_vector_table[ 9 ]; /* trace vector */
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M68Kvec[ 47 ] = monitors_vector_table[ 47 ]; /* system call vector */
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m68k_set_vbr( &M68Kvec );
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/*
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* You may wish to make the VME arbitration round-robin here, currently
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* we leave it as it is.
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*/
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/* set the Interrupt Base Vectors */
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lcsr->vector_base = (VBR0 << 28) | (VBR1 << 24);
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page_table_init();
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/*
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* we only use a hook to get the C library initialized.
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*/
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Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */
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Cpu_table.predriver_hook = NULL;
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Cpu_table.postdriver_hook = bsp_postdriver_hook;
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Cpu_table.idle_task = NULL; /* do not override system IDLE task */
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Cpu_table.do_zero_of_workspace = TRUE;
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Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
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Cpu_table.interrupt_stack_size = 4096;
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Cpu_table.extra_mpci_receive_server_stack = 0;
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/*
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* Copy the table
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*/
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BSP_Configuration = Configuration;
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/*
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* Add another extension if using the stack checker
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*/
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#ifdef STACK_CHECKER_ON
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BSP_Configuration.maximum_extensions++;
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#endif
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/*
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* Tell libio how many fd's we want and allow it to tweak config
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*/
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rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
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BSP_Configuration.work_space_start = (void *)
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(RAM_END - BSP_Configuration.work_space_size);
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}
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