blob: a482f13f7e720c0e034169f4d7bd3364683e2ea8 [file] [log] [blame]
/****************************************************************************
* 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