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/*
* 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.
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* Ported to the i386ex and submitted by:
*
* Erik Ivanenko
* University of Toronto
* erik.ivanenko@utoronto.ca
*
* $Id$
*/
#include <bsp.h>
#include <rtems/libio.h>
#include <libcsupport.h>
#ifdef STACK_CHECKER_ON
#include <stackchk.h>
#endif
/*
* 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;
/*
* Tells us where to put the workspace in case remote debugger is present.
*/
extern rtems_unsigned32 rdb_start;
/*
* bsp_libc_init
*
* Initialize whatever libc we are using called from bsp_postdriver_hook.
*/
void bsp_libc_init()
{
extern int heap_bottom;
rtems_unsigned32 heap_start;
rtems_unsigned32 heap_size;
heap_start = (rtems_unsigned32) &heap_bottom;
if (heap_start & (CPU_ALIGNMENT-1))
heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
heap_size = BSP_Configuration.work_space_start -(void *) heap_start ;
heap_size &= 0xfffffff0; /* keep it as a multiple of 16 bytes */
heap_size &= 0xfffffff0; /* keep it as a multiple of 16 bytes */
RTEMS_Malloc_Initialize((void *) heap_start, heap_size, 0);
/*
* Init the RTEMS libio facility to provide UNIX-like system
* calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
* Uses malloc() to get area for the iops, so must be after malloc init
*/
rtems_libio_init();
/*
* 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 */
}
/*
* Function: bsp_pretasking_hook
* Created: 95/03/10
*
* Description:
* BSP pretasking hook. Called just before drivers are initialized.
* Used to setup libc and install any BSP extensions.
*
* NOTES:
* Must not use libc (to do io) from here, since drivers are
* not yet initialized.
*
*/
void
bsp_pretasking_hook(void)
{
bsp_libc_init();
#ifdef STACK_CHECKER_ON
/*
* Initialize the stack bounds checker
* We can either turn it on here or from the app.
*/
Stack_check_Initialize();
#endif
#ifdef RTEMS_DEBUG
rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
#endif
}
/*
* Use the shared bsp_postdriver_hook() implementation
*/
void bsp_postdriver_hook(void);
void bsp_start( void )
{
/*
* we do not use the pretasking_hook.
*/
Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */
Cpu_table.predriver_hook = NULL;
Cpu_table.postdriver_hook = bsp_postdriver_hook;
Cpu_table.idle_task = NULL; /* do not override system IDLE task */
Cpu_table.do_zero_of_workspace = TRUE;
Cpu_table.interrupt_table_segment = get_ds();
Cpu_table.interrupt_table_offset = (void *)Interrupt_descriptor_table;
Cpu_table.interrupt_stack_size = 4096; /* STACK_MINIMUM_SIZE */
Cpu_table.extra_mpci_receive_server_stack = 0;
/*
* Copy the table
*/
BSP_Configuration = Configuration;
#if defined(RTEMS_POSIX_API)
BSP_Configuration.work_space_size *= 3;
#endif
BSP_Configuration.work_space_start = (void *)
RAM_END - BSP_Configuration.work_space_size;
/*
* Account for the console's resources
*/
/* console_reserve_resources( &BSP_Configuration ); */
/*
* Tell libio how many fd's we want and allow it to tweak config
*/
rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
}
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