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/* 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 "stackchk.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
)
{
/* set node number in SQSIO4 CTL REG */
*((rtems_unsigned32 *)0xc00000b0) =
(Configuration.User_multiprocessing_table) ?
Configuration.User_multiprocessing_table->node : 0;
Prcb = get_prcb();
Ctl_tbl = Prcb->control_tbl;
/* following configures the data breakpoint (which must be set
* before this is executed) to break on writes only.
*/
Ctl_tbl->bpcon &= ~0x00cc0000;
i960_reload_ctl_group( 6 );
/* bit 31 of the Register Cache Control can be set to
* enable an alternative caching algorithm. It does
* not appear to help RTEMS.
*/
/* Configure Number of Register Caches */
Prcb->reg_cache_cfg = 8;
i960_soft_reset( Prcb );
/*
* we do not use the pretasking_hook.
*/
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;
Cpu_table.interrupt_stack_size = 4096;
Cpu_table.extra_system_initialization_stack = 0;
Cpu_table.Prcb = Prcb;
/*
* Copy the table
*/
BSP_Configuration = Configuration;
/*
* Add 1 region for the RTEMS Malloc
*/
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
BSP_Configuration.work_space_start = (void *)
(RAM_END - BSP_Configuration.work_space_size);
rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
/* does not return */
bsp_cleanup();
return 0;
}
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