137 lines
4.8 KiB
C
137 lines
4.8 KiB
C
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/****************************************************************************
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* arch/arm/src/common/stm32_ccm.h
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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* Based on a prototype by Petteri Amimonen
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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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#ifndef __ARCH_ARM_SRC_STM32_STM32_CCM_H
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#define __ARCH_ARM_SRC_STM32_STM32_CCM_H
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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 <nuttx/mm.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* Assume that we can support the CCM heap */
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#define HAVE_CCM_HEAP 1
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/* Only the STM32 F2, F3, and F4 have CCM memory */
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#if defined(CONFIG_STM32_STM32F30XX)
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# define CCM_START 0x10000000
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# define CCM_END 0x10002000
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#elif defined(CONFIG_STM32_STM32F20XX) || defined(CONFIG_STM32_STM32F40XX)
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# define CCM_START 0x10000000
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# define CCM_END 0x10010000
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#else
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# undef HAVE_CCM_HEAP
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#endif
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/* In order to use the CCM heap, it had to have been excluded from the main
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* heap and support for multiple heaps must have been enabled.
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*/
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#if !defined(CONFIG_STM32_CCMEXCLUDE) || !defined(CONFIG_MM_MULTIHEAP)
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# undef HAVE_CCM_HEAP
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#endif
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/* Can we support the CCM heap? */
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#ifdef HAVE_CCM_HEAP
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/* ccm_initialize must be called early in initialization in order to
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* initialize the CCM heap.
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*/
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#define ccm_initialize() \
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mm_initialize(&g_ccm_heap, (uintptr_t)CCM_START, CCM_END-CCM_START)
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/* The ccm_addregion interface could be used if, for example, you want to
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* add some other memory region to the CCM heap. I don't really know why
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* you might want to do that, but the functionality is essentially free.
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*/
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#define ccm_addregion(b,s) mm_addregion(&g_ccm_heap, b, s);
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/* Then, once g_ccm_heap has been setup by ccm_initialize(), these memory
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* allocators can be used just like the standard memory allocators.
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*/
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#define ccm_malloc(s) mm_malloc(&g_ccm_heap, s)
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#define ccm_zalloc(s) mm_zalloc(&g_ccm_heap, s)
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#define ccm_calloc(n,s) mm_calloc(&g_ccm_heap, n,s)
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#define ccm_free(p) mm_free(&g_ccm_heap, p)
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#define ccm_realloc(p,s) mm_realloc(&g_ccm_heap, p, s)
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#define ccm_memalign(a,s) mm_memalign(&g_ccm_heap, a, s)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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#ifndef __ASSEMBLY__
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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EXTERN struct mm_heap_s g_ccm_heap;
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* HAVE_CCM_HEAP */
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#endif /* __ARCH_ARM_SRC_STM32_STM32_CCM_H */
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