flight/pios/stm32f0x/pios_bl_helper.c

   1 /**
   2  ******************************************************************************
   3  * @addtogroup PIOS PIOS Core hardware abstraction layer
   4  * @{
   5  * @addtogroup PIOS_BOOTLOADER Functions
   6  * @brief HAL code to interface to the OpenPilot AHRS module
   7  * @{
   8  *
   9  * @file       pios_bl_helper.c
  10  * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
  11  * @brief      Bootloader Helper Functions
  12  * @see        The GNU Public License (GPL) Version 3
  13  *
  14  *****************************************************************************/
  15 /*
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 3 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful, but
  22  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  23  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  24  * for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License along
  27  * with this program; if not, write to the Free Software Foundation, Inc.,
  28  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  29  */
  30
  31 #include <pios.h>
  32
  33 #ifdef PIOS_INCLUDE_BL_HELPER
  34
  35 #include <pios_board_info.h>
  36 #include <stm32f0xx_flash.h>
  37 #include <stdbool.h>
  38
  39 uint8_t *PIOS_BL_HELPER_FLASH_If_Read(uint32_t SectorAddress)
  40 {
  41     return (uint8_t *)(SectorAddress);
  42 }
  43
  44 #if defined(PIOS_INCLUDE_BL_HELPER_WRITE_SUPPORT)
  45
  46 static bool erase_flash(uint32_t startAddress, uint32_t endAddress);
  47
  48 uint8_t PIOS_BL_HELPER_FLASH_Ini()
  49 {
  50     FLASH_Unlock();
  51     return 1;
  52 }
  53
  54 uint8_t PIOS_BL_HELPER_FLASH_Start()
  55 {
  56     const struct pios_board_info *bdinfo = &pios_board_info_blob;
  57     uint32_t startAddress = bdinfo->fw_base;
  58     uint32_t endAddress   = bdinfo->fw_base + bdinfo->fw_size + bdinfo->desc_size;
  59
  60     bool success = erase_flash(startAddress, endAddress);
  61
  62     return (success) ? 1 : 0;
  63 }
  64
  65 uint8_t PIOS_BL_HELPER_FLASH_Erase_Bootloader()
  66 {
  67 /// Bootloader memory space erase
  68     uint32_t startAddress = BL_BANK_BASE;
  69     uint32_t endAddress   = BL_BANK_BASE + BL_BANK_SIZE;
  70
  71     bool success = erase_flash(startAddress, endAddress);
  72
  73     return (success) ? 1 : 0;
  74 }
  75
  76 static bool erase_flash(uint32_t startAddress, uint32_t endAddress)
  77 {
  78     uint32_t pageAddress = startAddress;
  79     uint8_t fail = false;
  80
  81     while ((pageAddress < endAddress) && (fail == false)) {
  82         for (int retry = 0; retry < MAX_DEL_RETRYS; ++retry) {
  83             if (FLASH_ErasePage(pageAddress) == FLASH_COMPLETE) {
  84                 fail = false;
  85                 break;
  86             } else {
  87                 fail = true;
  88             }
  89         }
  90         pageAddress += 1024;
  91     }
  92     return !fail;
  93 }
  94
  95 #endif /* if defined(PIOS_INCLUDE_BL_HELPER_WRITE_SUPPORT) */
  96
  97 uint32_t PIOS_BL_HELPER_CRC_Memory_Calc()
  98 {
  99     const struct pios_board_info *bdinfo = &pios_board_info_blob;
 100
 101     PIOS_BL_HELPER_CRC_Ini();
 102     CRC_ResetDR();
 103     CRC_CalcBlockCRC((uint32_t *)bdinfo->fw_base, (bdinfo->fw_size) >> 2);
 104     return CRC_GetCRC();
 105 }
 106
 107 void PIOS_BL_HELPER_FLASH_Read_Description(uint8_t *array, uint8_t size)
 108 {
 109     const struct pios_board_info *bdinfo = &pios_board_info_blob;
 110     uint8_t x = 0;
 111
 112     if (size > bdinfo->desc_size) {
 113         size = bdinfo->desc_size;
 114     }
 115     for (uint32_t i = bdinfo->fw_base + bdinfo->fw_size; i < bdinfo->fw_base + bdinfo->fw_size + size; ++i) {
 116         array[x] = *PIOS_BL_HELPER_FLASH_If_Read(i);
 117         ++x;
 118     }
 119 }
 120
 121 void PIOS_BL_HELPER_CRC_Ini()
 122 {
 123     RCC_AHBPeriphClockCmd(RCC_AHBPeriph_CRC, ENABLE);
 124 }
 125
 126 #endif /* PIOS_INCLUDE_BL_HELPER */