diff options
Diffstat (limited to 'nuttx/arch/arm/src/sam3u/sam_allocateheap.c')
-rw-r--r-- | nuttx/arch/arm/src/sam3u/sam_allocateheap.c | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/nuttx/arch/arm/src/sam3u/sam_allocateheap.c b/nuttx/arch/arm/src/sam3u/sam_allocateheap.c deleted file mode 100644 index bf765462e..000000000 --- a/nuttx/arch/arm/src/sam3u/sam_allocateheap.c +++ /dev/null @@ -1,245 +0,0 @@ -/**************************************************************************** - * arch/arm/src/common/sam_allocateheap.c - * - * Copyright (C) 2010, 2013 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/kmalloc.h> - -#include <arch/board/board.h> - -#include "chip.h" -#include "mpu.h" -#include "up_arch.h" -#include "up_internal.h" -#include "sam_mpuinit.h" - -/**************************************************************************** - * Private Definitions - ****************************************************************************/ - -#if CONFIG_MM_REGIONS < 2 -# warning "CONFIG_MM_REGIONS < 2: SRAM1 not included in HEAP" -#endif - -#if CONFIG_MM_REGIONS < 3 && !defined(CONFIG_SAM34_NAND) -# warning "CONFIG_MM_REGIONS < 3: NFC SRAM not included in HEAP" -#endif - -#if CONFIG_MM_REGIONS > 2 && defined(CONFIG_SAM34_NAND) -# error "CONFIG_MM_REGIONS > 3 but cannot used NFC SRAM" -# undef CONFIG_MM_REGIONS -# define CONFIG_MM_REGIONS 2 -#endif - -#if CONFIG_DRAM_END > (SAM_INTSRAM0_BASE+CONFIG_SAM34_SRAM0_SIZE) -# error "CONFIG_DRAM_END is beyond the end of SRAM0" -# undef CONFIG_DRAM_END -# define CONFIG_DRAM_END (SAM_INTSRAM0_BASE+CONFIG_SAM34_SRAM0_SIZE) -#elif CONFIG_DRAM_END < (SAM_INTSRAM0_BASE+CONFIG_SAM34_SRAM0_SIZE) -# warning "CONFIG_DRAM_END is before end of SRAM0... not all of SRAM0 used" -#endif - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: up_allocate_heap - * - * Description: - * This function will be called to dynamically set aside the heap region. - * - * For the kernel build (CONFIG_NUTTX_KERNEL=y) with both kernel- and - * user-space heaps (CONFIG_MM_KERNEL_HEAP=y), this function provides the - * size of the unprotected, user-space heap. - * - * If a protected kernel-space heap is provided, the kernel heap must be - * allocated (and protected) by an analogous up_allocate_kheap(). - * - * The following memory map is assumed for the flat build: - * - * .data region. Size determined at link time. - * .bss region Size determined at link time. - * IDLE thread stack. Size determined by CONFIG_IDLETHREAD_STACKSIZE. - * Heap. Extends to the end of SRAM. - * - * The following memory map is assumed for the kernel build: - * - * Kernel .data region. Size determined at link time. - * Kernel .bss region Size determined at link time. - * Kernel IDLE thread stack. Size determined by CONFIG_IDLETHREAD_STACKSIZE. - * Padding for alignment - * User .data region. Size determined at link time. - * User .bss region Size determined at link time. - * Kernel heap. Size determined by CONFIG_MM_KERNEL_HEAPSIZE. - * User heap. Extends to the end of SRAM. - * - ****************************************************************************/ - -void up_allocate_heap(FAR void **heap_start, size_t *heap_size) -{ -#if defined(CONFIG_NUTTX_KERNEL) && defined(CONFIG_MM_KERNEL_HEAP) - /* Get the unaligned size and position of the user-space heap. - * This heap begins after the user-space .bss section at an offset - * of CONFIG_MM_KERNEL_HEAPSIZE (subject to alignment). - */ - - uintptr_t ubase = (uintptr_t)USERSPACE->us_bssend + CONFIG_MM_KERNEL_HEAPSIZE; - size_t usize = CONFIG_DRAM_END - ubase; - int log2; - - DEBUGASSERT(ubase < (uintptr_t)CONFIG_DRAM_END); - - /* Adjust that size to account for MPU alignment requirements. - * NOTE that there is an implicit assumption that the CONFIG_DRAM_END - * is aligned to the MPU requirement. - */ - - log2 = (int)mpu_log2regionfloor(usize); - DEBUGASSERT((CONFIG_DRAM_END & ((1 << log2) - 1)) == 0); - - usize = (1 << log2); - ubase = CONFIG_DRAM_END - usize; - - /* Return the user-space heap settings */ - - up_ledon(LED_HEAPALLOCATE); - *heap_start = (FAR void*)ubase; - *heap_size = usize; - - /* Allow user-mode access to the user heap memory */ - - sam_mpu_uheap((uintptr_t)ubase, usize); -#else - - /* Return the heap settings */ - - up_ledon(LED_HEAPALLOCATE); - *heap_start = (FAR void*)g_idle_topstack; - *heap_size = CONFIG_DRAM_END - g_idle_topstack; -#endif -} - -/**************************************************************************** - * Name: up_allocate_kheap - * - * Description: - * For the kernel build (CONFIG_NUTTX_KERNEL=y) with both kernel- and - * user-space heaps (CONFIG_MM_KERNEL_HEAP=y), this function allocates - * (and protects) the kernel-space heap. - * - ****************************************************************************/ - -#if defined(CONFIG_NUTTX_KERNEL) && defined(CONFIG_MM_KERNEL_HEAP) -void up_allocate_kheap(FAR void **heap_start, size_t *heap_size) -{ - /* Get the unaligned size and position of the user-space heap. - * This heap begins after the user-space .bss section at an offset - * of CONFIG_MM_KERNEL_HEAPSIZE (subject to alignment). - */ - - uintptr_t ubase = (uintptr_t)USERSPACE->us_bssend + CONFIG_MM_KERNEL_HEAPSIZE; - size_t usize = CONFIG_DRAM_END - ubase; - int log2; - - DEBUGASSERT(ubase < (uintptr_t)CONFIG_DRAM_END); - - /* Adjust that size to account for MPU alignment requirements. - * NOTE that there is an implicit assumption that the CONFIG_DRAM_END - * is aligned to the MPU requirement. - */ - - log2 = (int)mpu_log2regionfloor(usize); - DEBUGASSERT((CONFIG_DRAM_END & ((1 << log2) - 1)) == 0); - - usize = (1 << log2); - ubase = CONFIG_DRAM_END - usize; - - /* Return the kernel heap settings (i.e., the part of the heap region - * that was not dedicated to the user heap). - */ - - *heap_start = (FAR void*)USERSPACE->us_bssend; - *heap_size = ubase - (uintptr_t)USERSPACE->us_bssend; -} -#endif - -/************************************************************************ - * 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) -{ - /* Allow user access to the heap memory */ - - sam_mpu_uheap(SAM_INTSRAM1_BASE, CONFIG_SAM34_SRAM1_SIZE); - - /* Add the region */ - - kumm_addregion((FAR void*)SAM_INTSRAM1_BASE, CONFIG_SAM34_SRAM1_SIZE); - -#if CONFIG_MM_REGIONS > 2 - /* Allow user access to the heap memory */ - - sam_mpu_uheap(SAM_NFCSRAM_BASE, CONFIG_SAM34_NFCSRAM_SIZE); - - /* Add the region */ - - kumm_addregion((FAR void*)SAM_NFCSRAM_BASE, CONFIG_SAM34_NFCSRAM_SIZE); -#endif -} -#endif |