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/*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
/* #define BSP_GET_WORK_AREA_DEBUG */
#include <bsp.h>
#include <bsp/bootcard.h>
#include <stdint.h>
#ifdef BSP_GET_WORK_AREA_DEBUG
#include <rtems/bspIo.h>
#endif
extern void *__rtems_end;
extern uintptr_t _bsp_sbrk_init(uintptr_t, uintptr_t*);
/*
* This method returns the base address and size of the area which
* is to be allocated between the RTEMS Workspace and the C Program
* Heap.
*/
void bsp_get_work_area(
void **work_area_start,
ssize_t *work_area_size,
void **heap_start,
ssize_t *heap_size
)
{
uintptr_t work_size;
uintptr_t spared;
uintptr_t work_area;
work_area = (uintptr_t)&__rtems_end +
rtems_configuration_get_interrupt_stack_size();
work_size = (uintptr_t)BSP_mem_size - work_area;
spared = _bsp_sbrk_init( work_area, &work_size );
*work_area_start = (void *)work_area,
*work_area_size = work_size;
*heap_start = BSP_BOOTCARD_HEAP_USES_WORK_AREA;
*heap_size = BSP_BOOTCARD_HEAP_SIZE_DEFAULT;
/*
* The following may be helpful in debugging what goes wrong when
* you are allocating the Work Area in a new BSP.
*/
#ifdef BSP_GET_WORK_AREA_DEBUG
printk( "work_area_start = %p\n", *work_area_start );
printk( "work_area_size = %d 0x%08x\n", *work_area_size, *work_area_size );
printk( "end = %p\n", *work_area_start + *work_area_size );
printk( "heap_start = %p\n", *heap_start );
printk( "heap_size = %d\n", *heap_size );
#endif
}
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