bsps: Rework work area initialization

The work area initialization was done by the BSP through
bsp_work_area_initialize(). This approach predated the system
initialization through the system initialization linker set. The
workspace and C program heap were unconditionally initialized.  The aim
is to support RTEMS application configurations which do not need the
workspace and C program heap.  In these configurations, the workspace
and C prgram heap should not get initialized.

Change all bsp_work_area_initialize() to implement _Memory_Get()
instead.  Move the dirty memory, sbrk(), per-CPU data, workspace, and
malloc() heap initialization into separate system initialization steps.
This makes it also easier to test the individual initialization steps.

This change adds a dependency to _Heap_Extend() to all BSPs.  This
dependency will be removed in a follow up change.

Update #3838.

1 files changed, 1 insertions, 61 deletions

diff --git a/bsps/include/bsp/bootcard.h b/bsps/include/bsp/bootcard.h
index 6121ff9ba1..e3eed8da46 100644
--- a/bsps/include/bsp/bootcard.h
+++ b/bsps/include/bsp/bootcard.h
@@ -21,11 +21,10 @@
 #ifndef LIBBSP_SHARED_BOOTCARD_H
 #define LIBBSP_SHARED_BOOTCARD_H
 
-#include <string.h>
-
 #include <rtems/config.h>
 #include <rtems/bspIo.h>
 #include <rtems/malloc.h>
+#include <rtems/score/memory.h>
 #include <rtems/score/wkspace.h>
 
 #include <bspopts.h>
@@ -71,65 +70,6 @@ void bsp_reset(void);
  */
 void boot_card(const char *cmdline) RTEMS_NO_RETURN;
 
-#ifdef CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK
-  /**
-   * @brief Gives the BSP a chance to reduce the work area size with sbrk()
-   * adding more later.
-   *
-   * bsp_sbrk_init() may reduce the work area size passed in. The routine
-   * returns the 'sbrk_amount' to be used when extending the heap.  Note that
-   * the return value may be zero.
-   *
-   * In case the @a area size is altered, then the remaining size of the
-   * @a area must be greater than or equal to @a min_size.
-   */
-  ptrdiff_t bsp_sbrk_init(Heap_Area *area, uintptr_t min_size);
-#endif
-
-static inline void bsp_work_area_initialize_default(
-  void *area_begin,
-  uintptr_t area_size
-)
-{
-  Heap_Area area = {
-    .begin = area_begin,
-    .size = area_size
-  };
-
-  #if BSP_DIRTY_MEMORY == 1
-    memset(area.begin, 0xCF,  area.size);
-  #endif
-
-  #ifdef CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK
-    {
-      uintptr_t overhead = _Heap_Area_overhead(CPU_HEAP_ALIGNMENT);
-      uintptr_t work_space_size = rtems_configuration_get_work_space_size();
-      ptrdiff_t sbrk_amount = bsp_sbrk_init(
-        &area,
-        work_space_size
-          + overhead
-          + (rtems_configuration_get_unified_work_area() ? 0 : overhead)
-      );
-
-      rtems_heap_set_sbrk_amount(sbrk_amount);
-    }
-  #endif
-
-  _Workspace_Handler_initialization(&area, 1, NULL);
-  RTEMS_Malloc_Initialize(&area, 1, NULL);
-}
-
-static inline void bsp_work_area_initialize_with_table(
-  Heap_Area *areas,
-  size_t area_count
-)
-{
-  _Workspace_Handler_initialization(areas, area_count, _Heap_Extend);
-  RTEMS_Malloc_Initialize(areas, area_count, _Heap_Extend);
-}
-
-void bsp_work_area_initialize(void);
-
 struct Per_CPU_Control;
 
 /**