From c4bb5210280f599935b85afdf6d8457a5ac5eea4 Mon Sep 17 00:00:00 2001 From: patacongo Date: Thu, 24 Nov 2011 01:34:10 +0000 Subject: Finish code for basic STM3240 port git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4124 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/arch/arm/src/stm32/stm32_allocateheap.c | 161 ++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) create mode 100644 nuttx/arch/arm/src/stm32/stm32_allocateheap.c (limited to 'nuttx/arch/arm/src/stm32/stm32_allocateheap.c') diff --git a/nuttx/arch/arm/src/stm32/stm32_allocateheap.c b/nuttx/arch/arm/src/stm32/stm32_allocateheap.c new file mode 100644 index 000000000..576db4047 --- /dev/null +++ b/nuttx/arch/arm/src/stm32/stm32_allocateheap.c @@ -0,0 +1,161 @@ +/**************************************************************************** + * arch/arm/src/stm32/up_allocateheap.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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 + +#include +#include + +#include +#include + +#include "chip.h" +#include "up_arch.h" +#include "up_internal.h" + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/* For the STM312F10xxx family, all SRAM is in a contiguous block starting + * at g_heapbase and extending through CONFIG_DRAM_END (my apologies for + * the bad naming). + */ + +#if defined(CONFIG_STM32_STM32F10XX) +# define SRAM1_END CONFIG_DRAM_END + +/* All members of the STM32F40xxx family have 192Kb in three banks: + * + * 1) 112Kb of SRAM beginning at address 0x2000:0000 + * 2) 16Kb of SRAM beginning at address 0x2001:c000 + * 3) 64Kb of TCM 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. + */ + +#elif defined(CONFIG_STM32_STM32F40XX) +# define SRAM1_END 0x20020000 +# define SRAM2_START 0x10000000 +# define SRAM2_END 0x10010000 +#else +# error "Unsupported STM32 chip" +#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 +# if defined(CONFIG_STM32_STM32F40XX) +# if defined(CONFIG_HEAP2_BASE) && defined(CONFIG_HEAP2_END) +# if CONFIG_MM_REGIONS > 3 +# error "CONFIG_MM_REGIONS > 3 but I don't know what all of the regions are" +# endif +# elif CONFIG_MM_REGIONS > 2 +# error "CONFIG_MM_REGIONS > 2 but I don't know what all of the regions are" +# endif + +void up_addregion(void) +{ + /* Add the STM32F40xxx TCM SRAM heap region. */ + + mm_addregion((FAR void*)SRAM2_START, SRAM2_END-SRAM2_START); + + /* Add the user specified heap region. */ + +# if CONFIG_MM_REGIONS > 2 && defined(CONFIG_HEAP2_BASE) && defined(CONFIG_HEAP2_END) + mm_addregion((FAR void*)CONFIG_HEAP2_BASE, CONFIG_HEAP2_END - CONFIG_HEAP2_BASE); +# endif +} + +# elif defined(CONFIG_HEAP2_BASE) && defined(CONFIG_HEAP2_END) +# if CONFIG_MM_REGIONS > 2 +# error "CONFIG_MM_REGIONS > 2 but I don't know what all of the regions are" +# endif + +void up_addregion(void) +{ + /* Add the user specified heap region. */ + + mm_addregion((FAR void*)CONFIG_HEAP2_BASE, CONFIG_HEAP2_END - CONFIG_HEAP2_BASE); +} + +# else +# error "CONFIG_MM_REGIONS > 1 but I don't know what any of the region(s) are" +# endif +#endif -- cgit v1.2.3