| /**************************************************************************** |
| * arch/arm/src/imx1/imx_allocateheap.c |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The |
| * ASF licenses this file to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the |
| * License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| * |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #include <sys/types.h> |
| #include <stdint.h> |
| #include <debug.h> |
| |
| #include <nuttx/kmalloc.h> |
| #include <nuttx/arch.h> |
| #include <nuttx/board.h> |
| #include <arch/board/board.h> |
| |
| #include "chip.h" |
| #include "arm_internal.h" |
| |
| /**************************************************************************** |
| * Public Functions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: up_allocate_heap |
| * |
| * Description: |
| * This function will be called to dynamically set aside the heap region. |
| * |
| * For the kernel build (CONFIG_BUILD_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(). |
| * |
| ****************************************************************************/ |
| |
| void up_allocate_heap(void **heap_start, size_t *heap_size) |
| { |
| board_autoled_on(LED_HEAPALLOCATE); |
| *heap_start = (void *)g_idle_topstack; |
| *heap_size = (IMX_SDRAM_VSECTION + CONFIG_RAM_SIZE) - g_idle_topstack; |
| } |
| |
| /**************************************************************************** |
| * Name: arm_addregion |
| * |
| * Description: |
| * Memory may be added in non-contiguous chunks. Additional chunks are |
| * added by calling this function. |
| * |
| ****************************************************************************/ |
| |
| #if CONFIG_MM_REGIONS > 1 |
| void arm_addregion(void) |
| { |
| /* If a bootloader that copies us to DRAM, but not to the beginning of |
| * DRAM, then recover that memory by adding another memory region. |
| */ |
| |
| #if !defined(CONFIG_BOOT_RUNFROMFLASH) && !defined(CONFIG_BOOT_COPYTORAM) |
| #if (CONFIG_RAM_NUTTXENTRY & 0xffff0000) != CONFIG_RAM_VSTART |
| uint32_t start = CONFIG_RAM_VSTART + 0x1000; |
| uint32_t end = (CONFIG_RAM_NUTTXENTRY & 0xffff0000); |
| |
| kmm_addregion((void *)start, end - start); |
| #endif |
| #endif |
| |
| /* Check for any additional memory regions */ |
| |
| #if defined(CONFIG_HEAP2_BASE) && defined(CONFIG_HEAP2_SIZE) |
| kmm_addregion((void *)CONFIG_HEAP2_BASE, CONFIG_HEAP2_SIZE); |
| #endif |
| } |
| #endif |