* arch/xtensa/src/esp32/esp32_imm.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 <nuttx/arch.h>
#include <nuttx/mm/mm.h>
#include <arch/esp32/memory_layout.h>
#include "xtensa.h"
#ifdef CONFIG_XTENSA_IMEM_USE_SEPARATE_HEAP
* Pre-processor Definitions
****************************************************************************/
* Private Data
****************************************************************************/
struct mm_heap_s *g_iheap;
* Public Functions
****************************************************************************/
* Name: xtensa_imm_initialize
*
* Description:
* Initialize the internal heap.
*
****************************************************************************/
void xtensa_imm_initialize(void)
{
void *start;
size_t size;
start = (void *)ESP32_IMEM_START;
size = CONFIG_XTENSA_IMEM_REGION_SIZE;
g_iheap = mm_initialize("esp32-imem", start, size);
}
* Name: xtensa_imm_malloc
*
* Description:
* Allocate memory from the internal heap.
*
****************************************************************************/
void *xtensa_imm_malloc(size_t size)
{
return mm_malloc(g_iheap, size);
}
* Name: xtensa_imm_calloc
*
* Description:
* Calculates the size of the allocation and
* allocate memory the internal heap.
*
****************************************************************************/
void *xtensa_imm_calloc(size_t n, size_t elem_size)
{
return mm_calloc(g_iheap, n, elem_size);
}
* Name: xtensa_imm_realloc
*
* Description:
* Reallocate memory from the internal heap.
*
****************************************************************************/
void *xtensa_imm_realloc(void *ptr, size_t size)
{
return mm_realloc(g_iheap, ptr, size);
}
* Name: xtensa_imm_zalloc
*
* Description:
* Allocate and zero memory from the internal heap.
*
****************************************************************************/
void *xtensa_imm_zalloc(size_t size)
{
return mm_zalloc(g_iheap, size);
}
* Name: xtensa_imm_free
*
* Description:
* Free memory from the internal heap.
*
****************************************************************************/
void xtensa_imm_free(void *mem)
{
mm_free(g_iheap, mem);
}
* Name: xtensa_imm_delayfree
*
* Description:
* Free memory from the internal heap with delay.
*
* Input Parameters:
* mem - Address to be freed.
*
* Returned Value:
* None.
*
****************************************************************************/
void xtensa_imm_delayfree(void *mem)
{
mm_delayfree(g_iheap, mem);
}
* Name: xtensa_imm_memalign
*
* Description:
* memalign requests more than enough space from malloc, finds a region
* within that chunk that meets the alignment request and then frees any
* leading or trailing space.
*
* The alignment argument must be a power of two (not checked). 8-byte
* alignment is guaranteed by normal malloc calls.
*
****************************************************************************/
void *xtensa_imm_memalign(size_t alignment, size_t size)
{
return mm_memalign(g_iheap, alignment, size);
}
* Name: xtensa_imm_heapmember
*
* Description:
* Check if an address lies in the internal heap.
*
* Parameters:
* mem - The address to check
*
* Return Value:
* true if the address is a member of the internal heap. false if not
*
****************************************************************************/
bool xtensa_imm_heapmember(void *mem)
{
return mm_heapmember(g_iheap, mem);
}
* Name: xtensa_imm_mallinfo
*
* Description:
* mallinfo returns a copy of updated current heap information for the
* user heap.
*
****************************************************************************/
struct mallinfo xtensa_imm_mallinfo(void)
{
return mm_mallinfo(g_iheap);
}
#endif