forked from Imagelibrary/rtems
9964895866
Adjust build support files to new directory layout. This patch is a part of the BSP source reorganization. Update #3285.
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
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* This set of routines are the BSP specific initialization
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* support routines.
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*
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* COPYRIGHT (c) 1989-2008.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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/* #define BSP_GET_WORK_AREA_DEBUG */
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#include <bsp.h>
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#include <bsp/bootcard.h>
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#ifdef BSP_GET_WORK_AREA_DEBUG
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#include <rtems/bspIo.h>
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#endif
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/* Tells us where to put the workspace in case remote debugger is present. */
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extern uint32_t rdb_start;
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/*
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* This method returns the base address and size of the area which
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* is to be allocated between the RTEMS Workspace and the C Program
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* Heap.
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*/
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void bsp_work_area_initialize(void)
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{
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/* must be identical to STACK_SIZE in start.S */
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#define STACK_SIZE (16 * 1024)
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/* Early dynamic memory allocator is placed just above _end */
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void *work_area_start = (void *)&end;
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uintptr_t work_area_size =
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(uintptr_t)rdb_start - (uintptr_t)&end - STACK_SIZE;
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/*
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* The following may be helpful in debugging what goes wrong when
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* you are allocating the Work Area in a new BSP.
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*/
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#ifdef BSP_GET_WORK_AREA_DEBUG
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{
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void *sp = __builtin_frame_address(0);
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void *end = *work_area_start + *work_area_size;
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printk(
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"work_area_start = 0x%p\n"
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"work_area_size = %d 0x%08x\n"
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"end = 0x%p\n"
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"current stack pointer = 0x%p%s\n",
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work_area_start,
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work_area_size, /* decimal */
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work_area_size, /* hexadecimal */
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end,
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sp,
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((sp >= *work_area_start && sp <= end) ? " OVERLAPS!" : "")
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);
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printk( "rdb_start = 0x%08x\n", rdb_start );
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}
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#endif
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bsp_work_area_initialize_default(work_area_start, work_area_size);
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}
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