1 files changed, 93 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc64/shared/startup/bspgetworkarea.c b/c/src/lib/libbsp/sparc64/shared/startup/bspgetworkarea.c
new file mode 100644
index 0000000000..2b8775df57
--- /dev/null
+++ b/c/src/lib/libbsp/sparc64/shared/startup/bspgetworkarea.c
@@ -0,0 +1,93 @@
+/*
+ *  This routine is an implementation of the bsp_get_work_area()
+ *  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).
+ *
+ *  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.
+ *
+ *  $Id$
+ */
+
+#include <bsp.h>
+#include <bsp/bootcard.h>
+#ifdef BSP_GET_WORK_AREA_DEBUG
+  #include <rtems/bspIo.h>
+#endif
+
+/*
+ *  These are provided by the linkcmds for ALL of the BSPs which use this file.
+ */
+extern char WorkAreaBase[];
+extern char HeapSize[];
+extern char HeapBase[];
+
+
+/*
+ *  We may get the size information from U-Boot or the linker scripts.
+ */
+#ifdef HAS_UBOOT
+  extern bd_t bsp_uboot_board_info;
+#else
+  extern char RamBase[];
+  extern char RamSize[];
+#endif /* HAS_UBOOT */
+
+/*
+ *  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,
+  uintptr_t  *work_area_size,
+  void      **heap_start,
+  uintptr_t  *heap_size
+)
+{
+  uintptr_t ram_end;
+
+  #ifdef HAS_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
+
+  *work_area_start = WorkAreaBase;
+  *work_area_size  = ram_end - (uintptr_t) WorkAreaBase;
+  *heap_start      = (void*) HeapBase;
+  *heap_size       = (uintptr_t) HeapSize;
+
+  /*
+   *  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
+    {
+      void *sp = __builtin_frame_address(0);
+      void *end = *work_area_start + *work_area_size;
+      printk(
+		"bsp_get_work_area\n\r"
+        "work_area_start = 0x%p\n\r"
+        "work_area_size = %d 0x%08x\n\r"
+        "end = 0x%p\n\r"
+        "heap_start = 0x%p\n\r"
+        "heap_size = %d\n\r"
+        "current stack pointer = 0x%p%s\n\r",
+        *work_area_start,
+        *work_area_size,  /* decimal */
+        *work_area_size,  /* hexadecimal */
+        end,
+        *heap_start,
+        *heap_size,
+        sp,
+        ((sp >= *work_area_start && sp <= end) ? " OVERLAPS!" : "")
+     );
+  }
+ #endif
+}