aboutsummaryrefslogtreecommitdiff
path: root/nuttx/arch/arm/src/stm32/stm32_allocateheap.c
diff options
context:
space:
mode:
Diffstat (limited to 'nuttx/arch/arm/src/stm32/stm32_allocateheap.c')
-rw-r--r--nuttx/arch/arm/src/stm32/stm32_allocateheap.c324
1 files changed, 0 insertions, 324 deletions
diff --git a/nuttx/arch/arm/src/stm32/stm32_allocateheap.c b/nuttx/arch/arm/src/stm32/stm32_allocateheap.c
deleted file mode 100644
index 4b8707a2b..000000000
--- a/nuttx/arch/arm/src/stm32/stm32_allocateheap.c
+++ /dev/null
@@ -1,324 +0,0 @@
-/****************************************************************************
- * arch/arm/src/stm32/up_allocateheap.c
- *
- * Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * 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.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-
-#include <sys/types.h>
-#include <debug.h>
-
-#include <nuttx/arch.h>
-#include <nuttx/mm.h>
-
-#include <arch/board/board.h>
-
-#include "chip.h"
-#include "up_arch.h"
-#include "up_internal.h"
-
-/****************************************************************************
- * Private Definitions
- ****************************************************************************/
-/* Internal SRAM is available in all members of the STM32 family. The
- * following definitions must be provided to specify the size and
- * location of internal(system) SRAM:
- *
- * CONFIG_DRAM_END : End address (+1) of SRAM (F1 family only, the
- * : F4 family uses the a priori end of SRAM)
- *
- * The F4 family also contains internal CCM SRAM. This SRAM is different
- * because it cannot be used for DMA. So if DMA needed, then the following
- * should be defined to exclude CCM SRAM from the heap:
- *
- * CONFIG_STM32_CCMEXCLUDE : Exclude CCM SRAM from the HEAP
- *
- * In addition to internal SRAM, SRAM may also be available through the FSMC.
- * In order to use FSMC SRAM, the following additional things need to be
- * present in the NuttX configuration file:
- *
- * CONFIG_STM32_FSMC=y : Enables the FSMC
- * CONFIG_STM32_FSMC_SRAM=y : Indicates that SRAM is available via the
- * FSMC (as opposed to an LCD or FLASH).
- * CONFIG_HEAP2_BASE : The base address of the SRAM in the FSMC
- * address space
- * CONFIG_HEAP2_SIZE : The size of the SRAM in the FSMC
- * address space
- * CONFIG_MM_REGIONS : Must be set to a large enough value to
- * include the FSMC SRAM (as determined by
- * the rules provided below)
- */
-
-#ifndef CONFIG_STM32_FSMC
-# undef CONFIG_STM32_FSMC_SRAM
-#endif
-
-/* For the STM312F10xxx family, all internal SRAM is in one contiguous block
- * starting at g_heapbase and extending through CONFIG_DRAM_END (my apologies for
- * the bad naming). In addition, external FSMC SRAM may be available.
- */
-
-#if defined(CONFIG_STM32_STM32F10XX)
-
- /* Set the end of system SRAM */
-
-# define SRAM1_END CONFIG_DRAM_END
-
- /* Check if external FSMC SRAM is provided */
-
-# if CONFIG_STM32_FSMC_SRAM
-# if CONFIG_MM_REGIONS < 2
-# warning "FSMC SRAM not included in the heap"
-# undef CONFIG_STM32_FSMC_SRAM
-# elif CONFIG_MM_REGIONS > 2
-# error "CONFIG_MM_REGIONS > 2 but I don't know what some of the region(s) are"
-# undef CONFIG_MM_REGIONS
-# define CONFIG_MM_REGIONS 2
-# endif
-# elif CONFIG_MM_REGIONS > 1
-# error "CONFIG_MM_REGIONS > 1 but I don't know what the other region(s) are"
-# endif
-
- /* The STM32 F1 has no CCM SRAM */
-
-# undef CONFIG_STM32_CCMEXCLUDE
-# define CONFIG_STM32_CCMEXCLUDE 1
-
-/* All members of the STM32F20xxx and STM32F40xxx families have 192Kb in three banks:
- *
- * 1) 112Kb of System SRAM beginning at address 0x2000:0000
- * 2) 16Kb of System SRAM beginning at address 0x2001:c000
- * 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
- *
- * As determined by ld.script, g_heapbase lies in the 112Kb memory
- * region and that extends to 0x2001:0000. But the first and second memory
- * regions are contiguous and treated as one in this logic that extends to
- * 0x2002:0000.
- *
- * As a complication, it appears that CCM SRAM cannot be used for DMA. So, if
- * STM32 DMA is enabled, CCM SRAM should probably be excluded from the heap.
- *
- * In addition, external FSMC SRAM may be available.
- */
-
-#elif defined(CONFIG_STM32_STM32F20XX) || defined(CONFIG_STM32_STM32F40XX)
-
-
- /* The STM32 F2 has no CCM SRAM */
-
-# ifdef CONFIG_STM32_STM32F20XX
-# undef CONFIG_STM32_CCMEXCLUDE
-# define CONFIG_STM32_CCMEXCLUDE 1
-# endif
-
- /* Set the end of system SRAM */
-
-# define SRAM1_END 0x20020000
-
- /* Set the range of CCM SRAM as well (although we may not use it) */
-
-# define SRAM2_START 0x10000000
-# define SRAM2_END 0x10010000
-
- /* There are 4 possible SRAM configurations:
- *
- * Configuration 1. System SRAM (only)
- * CONFIG_MM_REGIONS == 1
- * CONFIG_STM32_FSMC_SRAM NOT defined
- * CONFIG_STM32_CCMEXCLUDE defined
- * Configuration 2. System SRAM and CCM SRAM
- * CONFIG_MM_REGIONS == 2
- * CONFIG_STM32_FSMC_SRAM NOT defined
- * CONFIG_STM32_CCMEXCLUDE NOT defined
- * Configuration 3. System SRAM and FSMC SRAM
- * CONFIG_MM_REGIONS == 2
- * CONFIG_STM32_FSMC_SRAM defined
- * CONFIG_STM32_CCMEXCLUDE defined
- * Configuration 4. System SRAM, CCM SRAM, and FSMC SRAM
- * CONFIG_MM_REGIONS == 3
- * CONFIG_STM32_FSMC_SRAM defined
- * CONFIG_STM32_CCMEXCLUDE NOT defined
- *
- * Let's make sure that all definitions are consitent before doing
- * anything else
- */
-
-# if defined(CONFIG_STM32_FSMC_SRAM)
-
- /* Configuration 3 or 4. External SRAM is available. CONFIG_MM_REGIONS
- * should be at least 2.
- */
-
-# if CONFIG_MM_REGIONS < 2
- /* Only one memory region. Force Configuration 1 */
-
-# warning "FSMC SRAM (and CCM SRAM) excluded from the heap"
-# undef CONFIG_STM32_FSMC_SRAM
-# undef CONFIG_STM32_CCMEXCLUDE
-# define CONFIG_STM32_CCMEXCLUDE 1
-
- /* CONFIG_MM_REGIONS may be 3 if CCM SRAM is included in the head */
-
-# elif CONFIG_MM_REGIONS > 2
-
- /* More than two memory regions. This is okay if CCM SRAM is not
- * disabled.
- */
-
-# if defined(CONFIG_STM32_CCMEXCLUDE)
-
- /* Configuration 3: CONFIG_MM_REGIONS should have been 2 */
-
-# error "CONFIG_MM_REGIONS > 2 but I don't know what some of the region(s) are"
-# undef CONFIG_MM_REGIONS
-# define CONFIG_MM_REGIONS 2
-# else
-
- /* Configuration 4: DMA should be disabled and CONFIG_MM_REGIONS
- * should be 3.
- */
-
-# ifdef CONFIG_ARCH_DMA
-# warning "CCM SRAM is included in the heap AND DMA is enabled"
-# endif
-# if CONFIG_MM_REGIONS != 3
-# error "CONFIG_MM_REGIONS > 3 but I don't know what some of the region(s) are"
-# undef CONFIG_MM_REGIONS
-# define CONFIG_MM_REGIONS 3
-# endif
-# endif
-
- /* CONFIG_MM_REGIONS is exactly 2. We cannot support both CCM SRAM and
- * FSMC SRAM.
- */
-
-# elif !defined(CONFIG_STM32_CCMEXCLUDE)
-# error "CONFIG_MM_REGIONS == 2, cannot support both CCM SRAM and FSMC SRAM"
-# undef CONFIG_STM32_CCMEXCLUDE
-# define CONFIG_STM32_CCMEXCLUDE 1
-# endif
-
-# elif !defined(CONFIG_STM32_CCMEXCLUDE)
-
- /* Configuration 2: FSMC SRAM is not used, but CCM SRAM is requested. DMA
- * should be disabled and CONFIG_MM_REGIONS should be 2.
- */
-
-# ifdef CONFIG_ARCH_DMA
-# warning "CCM SRAM is included in the heap AND DMA is enabled"
-# endif
-# if CONFIG_MM_REGIONS < 2
-# error "CCM SRAM excluded from the heap because CONFIG_MM_REGIONS < 2"
-# undef CONFIG_STM32_CCMEXCLUDE
-# define CONFIG_STM32_CCMEXCLUDE 1
-# elif CONFIG_MM_REGIONS > 2
-# error "CONFIG_MM_REGIONS > 2 but I don't know what some of the region(s) are"
-# undef CONFIG_MM_REGIONS
-# define CONFIG_MM_REGIONS 2
-# endif
-# endif
-#else
-# error "Unsupported STM32 chip"
-#endif
-
-/* If FSMC SRAM is going to be used as heap, then verify that the starting
- * address and size of the external SRAM region has been provided in the
- * configuration (as CONFIG_HEAP2_BASE and CONFIG_HEAP2_SIZE).
- */
-
-#ifdef CONFIG_STM32_FSMC_SRAM
-# if !defined(CONFIG_HEAP2_BASE) || !defined(CONFIG_HEAP2_SIZE)
-# error "CONFIG_HEAP2_BASE and CONFIG_HEAP2_SIZE must be provided"
-# undef CONFIG_STM32_FSMC_SRAM
-# endif
-#endif
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: up_allocate_heap
- *
- * Description:
- * The heap may be statically allocated by
- * defining CONFIG_HEAP_BASE and CONFIG_HEAP_SIZE. If these
- * are not defined, then this function will be called to
- * dynamically set aside the heap region.
- *
- ****************************************************************************/
-
-void up_allocate_heap(FAR void **heap_start, size_t *heap_size)
-{
- up_ledon(LED_HEAPALLOCATE);
- *heap_start = (FAR void*)g_heapbase;
- *heap_size = SRAM1_END - g_heapbase;
-}
-
-/****************************************************************************
- * Name: up_addregion
- *
- * Description:
- * Memory may be added in non-contiguous chunks. Additional chunks are
- * added by calling this function.
- *
- ****************************************************************************/
-
-#if CONFIG_MM_REGIONS > 1
-void up_addregion(void)
-{
- /* Add the STM32F20xxx/STM32F40xxx CCM SRAM heap region. */
-
-#ifndef CONFIG_STM32_CCMEXCLUDE
- mm_addregion((FAR void*)SRAM2_START, SRAM2_END-SRAM2_START);
-#endif
-
- /* Add the external FSMC SRAM heap region. */
-
-#ifdef CONFIG_STM32_FSMC_SRAM
- mm_addregion((FAR void*)CONFIG_HEAP2_BASE, CONFIG_HEAP2_SIZE);
-#endif
-}
-#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-11 08:02:35 +0000