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/*
* File : sram.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2015, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2015-08-03 xiaonong The first version for STM32F7
*/
#include "sram.h"
#include "board.h"
#include <rtthread.h>
#ifdef RT_USING_EXT_SDRAM
struct rt_memheap system_heap;
void sram_init(void)
{
/* initialize the built-in SRAM as a memory heap */
rt_memheap_init(&system_heap,
"system",
(void *)HEAP_BEGIN,
(rt_uint32_t)HEAP_END - (rt_uint32_t)HEAP_BEGIN);
}
void *sram_malloc(unsigned long size)
{
return rt_memheap_alloc(&system_heap, size);
}
RTM_EXPORT(sram_malloc);
void sram_free(void *ptr)
{
rt_memheap_free(ptr);
}
RTM_EXPORT(sram_free);
void *sram_realloc(void *ptr, unsigned long size)
{
return rt_memheap_realloc(&system_heap, ptr, size);
}
RTM_EXPORT(sram_realloc);
#endif
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