151 lines
5.3 KiB
C
151 lines
5.3 KiB
C
/****************************************************************************
|
|
* arch/arm/src/stm32f7/stm32_dtcm.h
|
|
*
|
|
* Copyright (C) 2015-2017 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
* David Sidrane <david_s5@nscdg.com>
|
|
* Bob Feretich <bob.feretich@rafresearch.com>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __ARCH_ARM_SRC_STM32F7_STM32_DTCM_H
|
|
#define __ARCH_ARM_SRC_STM32F7_STM32_DTCM_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <nuttx/mm/mm.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
/* Configuration ************************************************************/
|
|
/* Assume that we can support the DTCM heap */
|
|
|
|
#define HAVE_DTCM_HEAP 1
|
|
|
|
/* The STM32 F7 have DTCM memory */
|
|
|
|
#if defined(CONFIG_STM32F7_STM32F72XX) || defined(CONFIG_STM32F7_STM32F73XX) \
|
|
|| defined(CONFIG_STM32F7_STM32F74XX) || defined(CONFIG_STM32F7_STM32F75XX)
|
|
# define DTCM_START 0x20000000
|
|
# define DTCM_END 0x20010000
|
|
#elif defined(CONFIG_STM32F7_STM32F76XX) || defined(CONFIG_STM32F7_STM32F77XX)
|
|
# define DTCM_START 0x20000000
|
|
# define DTCM_END 0x20020000
|
|
#else
|
|
# undef HAVE_DTCM_HEAP
|
|
#endif
|
|
|
|
/* In order to use the DTCM heap, it had to have been excluded from the main
|
|
* heap.
|
|
*/
|
|
|
|
#ifndef CONFIG_STM32F7_DTCMEXCLUDE
|
|
# undef HAVE_DTCM_HEAP
|
|
#endif
|
|
|
|
/* Can we support the DTCM heap? */
|
|
|
|
#ifdef HAVE_DTCM_HEAP
|
|
|
|
/* dtcm_initialize must be called early in initialization in order to
|
|
* initialize the DTCM heap.
|
|
*/
|
|
|
|
#define dtcm_initialize() \
|
|
mm_initialize(&g_dtcm_heap, (FAR void *)DTCM_START, DTCM_END-DTCM_START)
|
|
|
|
/* The dtcm_addregion interface could be used if, for example, you want to
|
|
* add some other memory region to the DTCM heap. I don't really know why
|
|
* you might want to do that, but the functionality is essentially free.
|
|
*/
|
|
|
|
#define dtcm_addregion(b,s) mm_addregion(&g_dtcm_heap, b, s);
|
|
|
|
/* Then, once g_dtcm_heap has been setup by dtcm_initialize(), these memory
|
|
* allocators can be used just like the standard memory allocators.
|
|
*/
|
|
|
|
#define dtcm_malloc(s) mm_malloc(&g_dtcm_heap, s)
|
|
#define dtcm_zalloc(s) mm_zalloc(&g_dtcm_heap, s)
|
|
#define dtcm_calloc(n,s) mm_calloc(&g_dtcm_heap, n,s)
|
|
#define dtcm_free(p) mm_free(&g_dtcm_heap, p)
|
|
#define dtcm_realloc(p,s) mm_realloc(&g_dtcm_heap, p, s)
|
|
#define dtcm_memalign(a,s) mm_memalign(&g_dtcm_heap, a, s)
|
|
|
|
/****************************************************************************
|
|
* Public Types
|
|
****************************************************************************/
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
#ifdef __cplusplus
|
|
#define EXTERN extern "C"
|
|
extern "C"
|
|
{
|
|
#else
|
|
#define EXTERN extern
|
|
#endif
|
|
|
|
EXTERN struct mm_heap_s g_dtcm_heap;
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
#undef EXTERN
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: dtcm_procfs_register
|
|
*
|
|
* Description:
|
|
* Register the DTCM procfs file system entry
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_STM32F7_DTCM_PROCFS
|
|
int dtcm_procfs_register(void);
|
|
#endif
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* HAVE_DTCM_HEAP */
|
|
#endif /* __ARCH_ARM_SRC_STM32F7_STM32_DTCM_H */
|