61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/*
|
|
* 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
|