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#define STACK_CHECKER_ON
/* bsp_start()
*
* This routine starts the application. It includes application,
* board, and monitor specific initialization and configuration.
* The generic CPU dependent initialization has been performed
* before this routine is invoked.
*
* INPUT: NONE
*
* OUTPUT: NONE
*
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* $Id$
*/
#include <rtems.h>
#include <bsp.h>
#include <libcsupport.h>
#include <vmeintr.h>
/*
* The original table from the application and our copy of it with
* some changes.
*/
extern rtems_configuration_table Configuration;
rtems_configuration_table BSP_Configuration;
rtems_cpu_table Cpu_table;
/* Initialize whatever libc we are using
* called from postdriver hook
*/
void bsp_libc_init()
{
extern int end;
rtems_unsigned32 heap_start;
heap_start = (rtems_unsigned32) &end;
if (heap_start & (CPU_ALIGNMENT-1))
heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
/*
* Set up for the libc handling.
*/
if (BSP_Configuration.ticks_per_timeslice > 0)
libc_init(1); /* reentrant if possible */
else
libc_init(0); /* non-reentrant */
/*
* Initialize the stack bounds checker
*/
#ifdef STACK_CHECKER_ON
Stack_check_Initialize();
#endif
}
int bsp_start(
int argc,
char **argv,
char **environp
)
{
m68k_isr_entry *monitors_vector_table;
int index;
void *vbr;
monitors_vector_table = (m68k_isr_entry *)0; /* Monitor Vectors are at 0 */
m68k_set_vbr( monitors_vector_table );
for ( index=2 ; index<=255 ; index++ )
M68Kvec[ index ] = monitors_vector_table[ 32 ];
M68Kvec[ 2 ] = monitors_vector_table[ 2 ]; /* bus error vector */
M68Kvec[ 4 ] = monitors_vector_table[ 4 ]; /* breakpoints vector */
M68Kvec[ 9 ] = monitors_vector_table[ 9 ]; /* trace vector */
/*
* Uncommenting this seems to confuse/break the monitor on this board.
* It probably assumes the vector table is at 0.
*/
/* m68k_set_vbr( &M68Kvec ); */
/*
* Adjust the VMEbus mode to round-robin.
*/
/*
* This is only apparent with the shared memory driver which has not
* yet been supported on this target.
*/
m68k_enable_caching();
/*
* we only use a hook to get the C library initialized.
*/
Cpu_table.pretasking_hook = NULL;
Cpu_table.predriver_hook = bsp_libc_init; /* RTEMS resources available */
Cpu_table.postdriver_hook = NULL; /* Call our main() for constructors */
Cpu_table.idle_task = NULL; /* do not override system IDLE task */
Cpu_table.do_zero_of_workspace = TRUE;
m68k_get_vbr( vbr );
Cpu_table.interrupt_vector_table = vbr;
Cpu_table.interrupt_stack_size = 4096;
Cpu_table.extra_system_initialization_stack = 0;
/*
* Copy the table
*/
BSP_Configuration = Configuration;
BSP_Configuration.work_space_start = (void *)
(RAM_END - BSP_Configuration.work_space_size);
/*
* Add 1 region for Malloc in libc_low
*/
BSP_Configuration.maximum_regions++;
/*
* Add 1 extension for newlib libc
*/
#ifdef RTEMS_NEWLIB
BSP_Configuration.maximum_extensions++;
#endif
/*
* Add another extension if using the stack checker
*/
#ifdef STACK_CHECKER_ON
BSP_Configuration.maximum_extensions++;
#endif
rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
/* does not return */
/* Clock_exit is done as an atexit() function */
VME_interrupt_Disable( 0xff );
/* return like a "normal" subroutine to the monitor */
return 0;
}
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