124 lines
4.0 KiB
C
124 lines
4.0 KiB
C
/****************************************************************************
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* arch/arm/src/stm32f7/stm32_dtcm.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_STM32F7_STM32_DTCM_H
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#define __ARCH_ARM_SRC_STM32F7_STM32_DTCM_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/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 DTCM heap */
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#define HAVE_DTCM_HEAP 1
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/* The STM32 F7 have DTCM memory */
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#if defined(CONFIG_STM32F7_STM32F72XX) || defined(CONFIG_STM32F7_STM32F73XX) \
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|| defined(CONFIG_STM32F7_STM32F74XX) || defined(CONFIG_STM32F7_STM32F75XX)
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# define DTCM_START 0x20000000
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# define DTCM_END 0x20010000
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#elif defined(CONFIG_STM32F7_STM32F76XX) || defined(CONFIG_STM32F7_STM32F77XX)
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# define DTCM_START 0x20000000
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# define DTCM_END 0x20020000
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#else
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# undef HAVE_DTCM_HEAP
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#endif
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/* In order to use the DTCM heap, it had to have been excluded from the main
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* heap.
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*/
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#ifndef CONFIG_STM32F7_DTCMEXCLUDE
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# undef HAVE_DTCM_HEAP
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#endif
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/* Can we support the DTCM heap? */
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#ifdef HAVE_DTCM_HEAP
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/* dtcm_initialize must be called early in initialization in order to
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* initialize the DTCM heap.
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*/
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#define dtcm_initialize() \
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g_dtcm_heap = mm_initialize("dtcm", (void *)DTCM_START, DTCM_END-DTCM_START)
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/* The dtcm_addregion interface could be used if, for example, you want to
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* add some other memory region to the DTCM 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 dtcm_addregion(b,s) mm_addregion(g_dtcm_heap, b, s);
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/* Then, once g_dtcm_heap has been setup by dtcm_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 dtcm_malloc(s) mm_malloc(g_dtcm_heap, s)
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#define dtcm_zalloc(s) mm_zalloc(g_dtcm_heap, s)
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#define dtcm_calloc(n,s) mm_calloc(g_dtcm_heap, n,s)
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#define dtcm_free(p) mm_free(g_dtcm_heap, p)
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#define dtcm_realloc(p,s) mm_realloc(g_dtcm_heap, p, s)
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#define dtcm_memalign(a,s) mm_memalign(g_dtcm_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_dtcm_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_DTCM_HEAP */
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#endif /* __ARCH_ARM_SRC_STM32F7_STM32_DTCM_H */
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