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LibrePilot/flight/PiOS/STM32F4xx/pios_bl_helper.c

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/**
******************************************************************************
* @addtogroup PIOS PIOS Core hardware abstraction layer
* @{
* @addtogroup PIOS_BOOTLOADER Functions
* @brief HAL code to interface to the OpenPilot AHRS module
* @{
*
* @file pios_bl_helper.c
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
* @brief Bootloader Helper Functions
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "pios.h"
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#ifdef PIOS_INCLUDE_BL_HELPER
#include <pios_board_info.h>
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#include "stm32f4xx_flash.h"
#include <stdbool.h>
uint8_t *PIOS_BL_HELPER_FLASH_If_Read(uint32_t SectorAddress)
{
return (uint8_t *) (SectorAddress);
}
#if defined(PIOS_INCLUDE_BL_HELPER_WRITE_SUPPORT)
uint8_t PIOS_BL_HELPER_FLASH_Ini()
{
FLASH_Unlock();
FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
return 1;
}
struct device_flash_sector {
uint32_t start;
uint32_t size;
uint16_t st_sector;
};
static struct device_flash_sector flash_sectors[] = {
[0] = {
.start = 0x08000000,
.size = 16 * 1024,
.st_sector = FLASH_Sector_0,
},
[1] = {
.start = 0x08004000,
.size = 16 * 1024,
.st_sector = FLASH_Sector_1,
},
[2] = {
.start = 0x08008000,
.size = 16 * 1024,
.st_sector = FLASH_Sector_2,
},
[3] = {
.start = 0x0800C000,
.size = 16 * 1024,
.st_sector = FLASH_Sector_3,
},
[4] = {
.start = 0x08010000,
.size = 64 * 1024,
.st_sector = FLASH_Sector_4,
},
[5] = {
.start = 0x08020000,
.size = 128 * 1024,
.st_sector = FLASH_Sector_5,
},
[6] = {
.start = 0x08040000,
.size = 128 * 1024,
.st_sector = FLASH_Sector_6,
},
[7] = {
.start = 0x08060000,
.size = 128 * 1024,
.st_sector = FLASH_Sector_7,
},
[8] = {
.start = 0x08080000,
.size = 128 * 1024,
.st_sector = FLASH_Sector_8,
},
[9] = {
.start = 0x080A0000,
.size = 128 * 1024,
.st_sector = FLASH_Sector_9,
},
[10] = {
.start = 0x080C0000,
.size = 128 * 1024,
.st_sector = FLASH_Sector_10,
},
[11] = {
.start = 0x080E0000,
.size = 128 * 1024,
.st_sector = FLASH_Sector_11,
},
};
static bool PIOS_BL_HELPER_FLASH_GetSectorInfo(uint32_t address, uint8_t * sector_number, uint32_t *sector_start, uint32_t *sector_size)
{
for (uint8_t i = 0; i < NELEMENTS(flash_sectors); i++) {
struct device_flash_sector * sector = &flash_sectors[i];
if ((address >= sector->start) &&
(address < (sector->start + sector->size))) {
/* address lies within this sector */
*sector_number = sector->st_sector;
*sector_start = sector->start;
*sector_size = sector->size;
return (true);
}
}
return (false);
}
uint8_t PIOS_BL_HELPER_FLASH_Start()
{
const struct pios_board_info * bdinfo = &pios_board_info_blob;
uint32_t pageAddress = bdinfo->fw_base;
bool fail = false;
while ((pageAddress < (bdinfo->fw_base + bdinfo->fw_size + bdinfo->desc_size))
&& (fail == false)) {
uint8_t sector_number;
uint32_t sector_start;
uint32_t sector_size;
if (!PIOS_BL_HELPER_FLASH_GetSectorInfo(pageAddress,
&sector_number,
&sector_start,
&sector_size)) {
/* We're asking for an invalid flash address */
PIOS_Assert(0);
}
for (int retry = 0; retry < MAX_DEL_RETRYS; ++retry) {
if (FLASH_EraseSector(sector_number, VoltageRange_3) == FLASH_COMPLETE) {
fail = false;
break;
} else {
fail = true;
}
}
/* Move to the next sector */
pageAddress += sector_size;
}
return (fail == true) ? 0 : 1;
}
#endif
uint32_t PIOS_BL_HELPER_CRC_Memory_Calc()
{
const struct pios_board_info * bdinfo = &pios_board_info_blob;
PIOS_BL_HELPER_CRC_Ini();
CRC_ResetDR();
CRC_CalcBlockCRC((uint32_t *) bdinfo->fw_base, (bdinfo->fw_size) >> 2);
return CRC_GetCRC();
}
void PIOS_BL_HELPER_FLASH_Read_Description(uint8_t * array, uint8_t size)
{
const struct pios_board_info * bdinfo = &pios_board_info_blob;
uint8_t x = 0;
if (size > bdinfo->desc_size) size = bdinfo->desc_size;
for (uint32_t i = bdinfo->fw_base + bdinfo->fw_size; i < bdinfo->fw_base + bdinfo->fw_size + size; ++i) {
array[x] = *PIOS_BL_HELPER_FLASH_If_Read(i);
++x;
}
}
void PIOS_BL_HELPER_CRC_Ini()
{
}
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#endif /* PIOS_INCLUDE_BL_HELPER */