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/*
* This routine is an implementation of the bsp_pretasking_hook
* that can be used by all m68k BSPs following linkcmds conventions
* regarding heap, stack, and workspace allocation.
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* 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.
*
* $Id$
*/
#include <rtems.h>
#include <bsp.h>
#include <libcsupport.h>
/*
* 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.
*
*/
extern void bsp_libc_init( void *, unsigned long, int );
extern rtems_configuration_table BSP_Configuration;
extern void *_RamBase;
extern void *_WorkspaceBase;
extern void *_HeapSize;
unsigned long _M68k_Ramsize;
void bsp_pretasking_hook(void)
{
void *heapStart;
unsigned long heapSize = (unsigned long)&_HeapSize;
unsigned long ramSpace;
heapStart = (void *)
((unsigned long)&_WorkspaceBase + BSP_Configuration.work_space_size);
ramSpace = (unsigned long) &_RamBase + _M68k_Ramsize - (unsigned long) heapStart;
if (heapSize == 0)
heapSize = ramSpace;
else if (heapSize > ramSpace)
rtems_fatal_error_occurred (('H'<<24) | ('E'<<16) | ('A'<<8) | 'P');
bsp_libc_init(heapStart, heapSize, 0);
#ifdef RTEMS_DEBUG
rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
#endif
}
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