ae853aaa49
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1695 42af7a65-404d-4744-a932-0658087f49c3
114 lines
4.4 KiB
C
114 lines
4.4 KiB
C
/****************************************************************************
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* arch/arm/src/imx/imx_allocateheap.c
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* arch/arm/src/chip/imx_allocateheap.c
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*
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* Copyright (C) 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <debug.h>
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#include <nuttx/mm.h>
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#include <nuttx/arch.h>
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#include "up_arch.h"
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#include "up_internal.h"
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/****************************************************************************
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* Private Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_allocate_heap
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*
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* Description:
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* The heap may be statically allocated by defining CONFIG_HEAP_BASE and
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* CONFIG_HEAP_SIZE. If these are not defined, then this function will be
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* called to dynamically set aside the heap region.
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*
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****************************************************************************/
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void up_allocate_heap(FAR void **heap_start, size_t *heap_size)
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{
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up_ledon(LED_HEAPALLOCATE);
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*heap_start = (FAR void*)g_heapbase;
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*heap_size = (IMX_SDRAM_VSECTION + CONFIG_DRAM_SIZE) - g_heapbase;
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}
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/****************************************************************************
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* Name: up_addregion
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*
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* Description:
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* Memory may be added in non-contiguous chunks. Additional chunks are
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* added by calling this function.
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*
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****************************************************************************/
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#if CONFIG_MM_REGIONS > 1
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void up_addregion(void)
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{
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/* If a bootloader that copies us to DRAM, but not to the beginning of DRAM,
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* then recover that memory by adding another memory region.
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*/
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#if !defined(CONFIG_BOOT_RUNFROMFLASH) && !defined(CONFIG_BOOT_COPYTORAM)
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# if (CONFIG_DRAM_NUTTXENTRY & 0xffff0000) != CONFIG_DRAM_VSTART
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uint32 start = CONFIG_DRAM_VSTART + 0x1000;
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uint32 end = (CONFIG_DRAM_NUTTXENTRY & 0xffff0000);
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mm_addregion((FAR void*)start, end - start);
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# endif
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#endif
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/* Check for any additional memory regions */
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#if defined(CONFIG_HEAP2_BASE) && defined(CONFIG_HEAP2_END)
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mm_addregion((FAR void*)CONFIG_HEAP2_BASE, CONFIG_HEAP2_END - CONFIG_HEAP2_BASE);
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#endif
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}
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#endif
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