source: rtems/c/src/lib/libbsp/shared/bspgetworkarea.c @ c499856

/*
 *  This routine is an implementation of the bsp_work_area_initialize()
 *  that can be used by all BSPs following linkcmds conventions
 *  regarding heap, stack, and workspace allocation.
 *
 *  COPYRIGHT (c) 1989-2008.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  Copyright (c) 2011-2012 embedded brains GmbH.
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.org/license/LICENSE.
 */

#include <bsp.h>
#include <bsp/bootcard.h>
#ifdef BSP_INTERRUPT_STACK_AT_WORK_AREA_BEGIN
  #include <rtems/config.h>
#endif

#if defined(HAS_UBOOT) && !defined(BSP_DISABLE_UBOOT_WORK_AREA_CONFIG)
  #define USE_UBOOT
#endif

/*
 *  These are provided by the linkcmds for ALL of the BSPs which use this file.
 */
extern char WorkAreaBase[];

/*
 *  We may get the size information from U-Boot or the linker scripts.
 */
#ifdef USE_UBOOT
  #include <bsp/u-boot.h>
#else
  extern char RamBase[];
  extern char RamSize[];
#endif

void bsp_work_area_initialize(void)
{
  uintptr_t work_base = (uintptr_t) WorkAreaBase;
  uintptr_t ram_end;

  #ifdef USE_UBOOT
    ram_end = (uintptr_t) bsp_uboot_board_info.bi_memstart +
                          bsp_uboot_board_info.bi_memsize;
  #else
    ram_end = (uintptr_t)RamBase + (uintptr_t)RamSize;
  #endif

  #ifdef BSP_INTERRUPT_STACK_AT_WORK_AREA_BEGIN
    work_base += rtems_configuration_get_interrupt_stack_size();
  #endif

  bsp_work_area_initialize_default( (void *) work_base, ram_end - work_base );
}