LPC313X heap setup logic
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2436 42af7a65-404d-4744-a932-0658087f49c3
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@ -46,4 +46,4 @@ CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
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up_undefinedinsn.c up_usestack.c
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CHIP_ASRCS =
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CHIP_CSRCS =
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CHIP_CSRCS = lpc313x_allocateheap.c
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92
arch/arm/src/lpc313x/lpc313x_allocateheap.c
Executable file
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arch/arm/src/lpc313x/lpc313x_allocateheap.c
Executable file
@ -0,0 +1,92 @@
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/************************************************************************
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* arch/arm/src/lpc313x/lpc313x_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/arch.h>
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#include "up_arch.h"
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#include "up_internal.h"
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#include "lpc313x_memorymap.h"
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/************************************************************************
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* Pre-processor 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
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* and CONFIG_HEAP_SIZE. If these are not defined, then this function
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* will be called to dynamically set aside the heap region to the end
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* of SRAM.
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*
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* SRAM layout:
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* Start of SRAM: .data
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* .bss
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* IDLE thread stack
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* End of SRAm: heap
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*
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* NOTE: Ignore the erroneous nomenclature DRAM and SDRAM. That names
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* date back to an earlier platform that had SDRAM.
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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 = (LPC313X_SRAM_VADDR + CONFIG_DRAM_SIZE) - g_heapbase;
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}
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@ -116,7 +116,26 @@
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/* To be provided */
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/* LPC313X Virtual (mapped) Memory Map */
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/* To be provided */
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/* Temporary for now, just to get through compilation */
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#define LPC313X_SHADOWSPACE_VSECTION 0x00000000 /* 0x00000000-0x00000fff: Shadow Area 4Kb */
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#define LPC313X_INTSRAM0_VSECTION 0x11028000 /* 0x11028000-0x1103ffff: Internal SRAM 0 96Kb */
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#define LPC313X_INTSRAM1_VSECTION 0x11040000 /* 0x11040000-0x11057fff: Internal SRAM 1 96Kb */
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# define LPC313X_SRAM_VADDR LPC313X_INTSRAM0_VSECTION
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#define LPC313X_INTSROM0_VSECTION 0x12000000 /* 0x12000000-0x1201ffff: Internal SROM 0 128Kb */
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#define LPC313X_APB0_VSECTION 0x13000000 /* 0x13000000-0x13007fff: APB0 32Kb */
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#define LPC313X_APB1_VSECTION 0x13008000 /* 0x13008000-0x1300bfff: APB1 16Kb */
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#define LPC313X_APB2_VSECTION 0x15000000 /* 0x15000000-0x15003fff: APB2 16Kb */
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#define LPC313X_APB3_VSECTION 0x16000000 /* 0x16000000-0x160003ff: APB3 1Kb */
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#define LPC313X_APB4_VSECTION 0x17000000 /* 0x17000000-0x17000fff: APB4 4Kb */
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#define LPC313X_MPMC_VSECTION 0x17008000 /* 0x17008000-0x17008fff: MPMC cfg 4Kb */
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#define LPC313X_MCI_VSECTION 0x18000000 /* 0x18000000 0x180003ff: MCI/SD/SDIO 1Kb */
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#define LPC313X_USBOTG_VSECTION 0x19000000 /* 0x19000000-0x19000fff: USB OTG 4Kb */
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#define LPC313X_EXTSRAM0_VSECTION 0x20000000 /* 0x20000000-0x2001ffff: External SRAM 0 64-128Kb */
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#define LPC313X_EXTSRAM1_VSECTION 0x20020000 /* 0x20020000-0x2003ffff: External SRAM 1 64-128Kb */
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#define LPC313X_EXTSDRAM0_VSECTION 0x30000000 /* 0x30000000-0x37ffffff: External SDRAM 0 128Mb */
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#define LPC313X_INTC_VSECTION 0x60000000 /* 0x60000000-0x60000fff: Interrupt controller 4Kb */
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#define LPC313X_NAND_VSECTION 0x70000000 /* 0x70000000-0x700007ff: NANDFLASH Ctrl 2Kb */
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/* The NuttX entry point starts at an offset from the virtual beginning of DRAM.
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* This offset reserves space for the MMU page cache.
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