52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/*
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* File : sram.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2009-2013 RT-Thread Develop Team
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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.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2013-05-19 Bernard The first version for LPC40xx
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*/
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#include "board.h"
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#include "drv_sram.h"
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#include <rtthread.h>
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#if LPC_EXT_SDRAM
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struct rt_memheap system_heap;
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void sram_init(void)
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{
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rt_kprintf("system ram: [0x%08x - 0x%08x]\n", HEAP_BEGIN, HEAP_END);
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/* initialize the built-in SRAM as a memory heap */
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rt_memheap_init(&system_heap,
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"system",
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(void *)HEAP_BEGIN,
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(rt_uint32_t)HEAP_END - (rt_uint32_t)HEAP_BEGIN);
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}
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void *sram_malloc(unsigned long size)
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{
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return rt_memheap_alloc(&system_heap, size);
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}
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RTM_EXPORT(sram_malloc);
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void sram_free(void *ptr)
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{
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rt_memheap_free(ptr);
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}
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RTM_EXPORT(sram_free);
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void *sram_realloc(void *ptr, unsigned long size)
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{
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return rt_memheap_realloc(&system_heap, ptr, size);
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}
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RTM_EXPORT(sram_realloc);
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#endif
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