256 lines
8.1 KiB
C
256 lines
8.1 KiB
C
/****************************************************************************
|
|
* include/nuttx/progmem.h
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __INCLUDE_NUTTX_PROGMEM_H
|
|
#define __INCLUDE_NUTTX_PROGMEM_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <stdbool.h>
|
|
|
|
#ifdef CONFIG_ARCH_HAVE_PROGMEM
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
#undef EXTERN
|
|
#if defined(__cplusplus)
|
|
#define EXTERN extern "C"
|
|
extern "C"
|
|
{
|
|
#else
|
|
#define EXTERN extern
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: up_progmem_neraseblocks
|
|
*
|
|
* Description:
|
|
* Return number of erase blocks
|
|
*
|
|
****************************************************************************/
|
|
|
|
size_t up_progmem_neraseblocks(void);
|
|
|
|
/****************************************************************************
|
|
* Name: up_progmem_isuniform
|
|
*
|
|
* Description:
|
|
* Is program memory uniform or erase page and read/write page size differs?
|
|
*
|
|
****************************************************************************/
|
|
|
|
bool up_progmem_isuniform(void);
|
|
|
|
/****************************************************************************
|
|
* Name: up_progmem_pagesize
|
|
*
|
|
* Description:
|
|
* Return read/write page size
|
|
*
|
|
****************************************************************************/
|
|
|
|
size_t up_progmem_pagesize(size_t page);
|
|
|
|
/****************************************************************************
|
|
* Name: up_progmem_erasesize
|
|
*
|
|
* Description:
|
|
* Return erase block size. Must be a multiple of the read/write page size.
|
|
*
|
|
****************************************************************************/
|
|
|
|
size_t up_progmem_erasesize(size_t block);
|
|
|
|
/****************************************************************************
|
|
* Name: up_progmem_getpage
|
|
*
|
|
* Description:
|
|
* Address to read/write page conversion
|
|
*
|
|
* Input Parameters:
|
|
* addr - Address with or without flash offset
|
|
* (absolute or aligned to page0)
|
|
*
|
|
* Returned Value:
|
|
* Page or negative value on error.
|
|
* The following errors are reported (errno is not set!):
|
|
*
|
|
* -EFAULT: On invalid address
|
|
*
|
|
****************************************************************************/
|
|
|
|
ssize_t up_progmem_getpage(size_t addr);
|
|
|
|
/****************************************************************************
|
|
* Name: up_progmem_getaddress
|
|
*
|
|
* Description:
|
|
* Read/write page to address conversion
|
|
*
|
|
* Input Parameters:
|
|
* page - page index
|
|
*
|
|
* Returned Value:
|
|
* Base address of given page, SIZE_MAX if page index is not valid.
|
|
*
|
|
****************************************************************************/
|
|
|
|
size_t up_progmem_getaddress(size_t page);
|
|
|
|
/****************************************************************************
|
|
* Name: up_progmem_eraseblock
|
|
*
|
|
* Description:
|
|
* Erase selected erase block.
|
|
*
|
|
* Input Parameters:
|
|
* block - The erase block index to be erased.
|
|
*
|
|
* Returned Value:
|
|
* block size or negative value on error.
|
|
* The following errors are reported (errno is not set!):
|
|
*
|
|
* -EFAULT: On invalid page
|
|
* -EIO: On unsuccessful erase
|
|
* -EROFS: On access to write protected area
|
|
* -EACCES: Insufficient permissions (read/write protected)
|
|
* -EPERM: If operation is not permitted due to some other constraints
|
|
* (i.e. some internal block is not running etc.)
|
|
*
|
|
****************************************************************************/
|
|
|
|
ssize_t up_progmem_eraseblock(size_t block);
|
|
|
|
/****************************************************************************
|
|
* Name: up_progmem_ispageerased
|
|
*
|
|
* Description:
|
|
* Checks whether erase page is erased
|
|
*
|
|
* Input Parameters:
|
|
* page - The page index to be checked.
|
|
*
|
|
* Returned Value:
|
|
* Returns number of bytes NOT erased or negative value on error. If it
|
|
* returns zero then complete page is erased.
|
|
*
|
|
* The following errors are reported:
|
|
* -EFAULT: On invalid page
|
|
*
|
|
****************************************************************************/
|
|
|
|
ssize_t up_progmem_ispageerased(size_t page);
|
|
|
|
/****************************************************************************
|
|
* Name: up_progmem_write
|
|
*
|
|
* Description:
|
|
* Program data at given address
|
|
*
|
|
* Note: this function is not limited to single page and nor it requires
|
|
* the address be aligned inside the page boundaries.
|
|
*
|
|
* Input Parameters:
|
|
* addr - Address with or without flash offset
|
|
* (absolute or aligned to page0)
|
|
* buf - Pointer to buffer
|
|
* count - Number of bytes to write
|
|
*
|
|
* Returned Value:
|
|
* Bytes written or negative value on error. The following errors are
|
|
* reported (errno is not set!)
|
|
*
|
|
* EINVAL: If count is not aligned with the flash boundaries (i.e.
|
|
* some MCU's require per half-word or even word access)
|
|
* EFAULT: On invalid address
|
|
* EIO: On unsuccessful write
|
|
* EROFS: On access to write protected area
|
|
* EACCES: Insufficient permissions (read/write protected)
|
|
* EPERM: If operation is not permitted due to some other constraints
|
|
* (i.e. some internal block is not running etc.)
|
|
*
|
|
****************************************************************************/
|
|
|
|
ssize_t up_progmem_write(size_t addr, FAR const void *buf, size_t count);
|
|
|
|
/****************************************************************************
|
|
* Name: up_progmem_read
|
|
*
|
|
* Description:
|
|
* Read data at given address
|
|
*
|
|
* Note: this function is not limited to single page and nor it requires
|
|
* the address be aligned inside the page boundaries.
|
|
*
|
|
* Input Parameters:
|
|
* addr - Address with or without flash offset
|
|
* (absolute or aligned to page0)
|
|
* buf - Pointer to buffer
|
|
* count - Number of bytes to read
|
|
*
|
|
* Returned Value:
|
|
* Bytes read or negative value on error. The following errors are
|
|
* reported (errno is not set!)
|
|
*
|
|
* EINVAL: If count is not aligned with the flash boundaries (i.e.
|
|
* some MCU's require per half-word or even word access)
|
|
* EFAULT: On invalid address
|
|
* EIO: On unsuccessful read
|
|
* EACCES: Insufficient permissions (read/write protected)
|
|
* EPERM: If operation is not permitted due to some other constraints
|
|
* (i.e. some internal block is not running etc.)
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_ARCH_HAVE_PROGMEM_READ
|
|
ssize_t up_progmem_read(size_t addr, FAR void *buf, size_t count);
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: up_progmem_erasestate
|
|
*
|
|
* Description:
|
|
* Return value of erase state.
|
|
*
|
|
****************************************************************************/
|
|
|
|
uint8_t up_progmem_erasestate(void);
|
|
|
|
#undef EXTERN
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif /* CONFIG_ARCH_HAVE_PROGMEM */
|
|
#endif /* __INCLUDE_NUTTX_PROGMEM_H */
|