nodemcu-firmware/components/platform/platform_partition.c

73 lines
2.4 KiB
C

/*
* Copyright 2016 Dius Computing Pty Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of the copyright holders 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 HOLDER 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.
*
* @author Johny Mattsson <jmattsson@dius.com.au>
*/
#include "platform.h"
#include <string.h>
#include <stdlib.h>
#include "esp_flash_partitions.h"
#include "esp_flash.h"
static inline bool possible_idx (uint8_t idx)
{
return ((idx +1) * sizeof (esp_partition_info_t)) < SPI_FLASH_SEC_SIZE;
}
bool platform_partition_info (uint8_t idx, platform_partition_t *info)
{
if (!possible_idx (idx))
return false;
esp_partition_info_t pi;
esp_err_t err = esp_flash_read(
NULL,
(uint32_t *)&pi,
ESP_PARTITION_TABLE_OFFSET + idx * sizeof(pi),
sizeof (pi));
if (err != ESP_OK)
return false;
if (pi.magic != ESP_PARTITION_MAGIC)
return false;
memcpy (info->label, pi.label, sizeof (info->label));
info->offs = pi.pos.offset;
info->size = pi.pos.size;
info->type = pi.type;
info->subtype = pi.subtype;
return true;
}