amiro-blt / Target / Modules / DiWheelDrive_1-2 / Boot / hooks.c @ fc7151bb
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/************************************************************************************//** |
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* \file Demo\ARMCM3_STM32_Olimex_STM32P103_GCC\Boot\hooks.c
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* \brief Bootloader callback source file.
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* \ingroup Boot_ARMCM3_STM32_Olimex_STM32P103_GCC
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* \internal
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*----------------------------------------------------------------------------------------
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* C O P Y R I G H T
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*----------------------------------------------------------------------------------------
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* Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
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*
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*----------------------------------------------------------------------------------------
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* L I C E N S E
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*----------------------------------------------------------------------------------------
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* This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with OpenBLT.
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* If not, see <http://www.gnu.org/licenses/>.
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*
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* A special exception to the GPL is included to allow you to distribute a combined work
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* that includes OpenBLT without being obliged to provide the source code for any
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* proprietary components. The exception text is included at the bottom of the license
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* file <license.html>.
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*
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* \endinternal
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****************************************************************************************/
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/****************************************************************************************
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* Include files
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****************************************************************************************/
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#include "boot.h" /* bootloader generic header */ |
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#if (BOOT_FILE_LOGGING_ENABLE > 0) |
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#include "stm32f10x.h" /* STM32 registers */ |
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#include "stm32f10x_conf.h" /* STM32 peripheral drivers */ |
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#endif
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/****************************************************************************************
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* B A C K D O O R E N T R Y H O O K F U N C T I O N S
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****************************************************************************************/
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#if (BOOT_BACKDOOR_HOOKS_ENABLE > 0) |
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static blt_int32u backdoorOpenTime;
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#define BACKDOOR_ENTRY_TIMEOUT_MS 500 |
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static blt_bool timeRanOut = BLT_FALSE;
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enum BOOT_STATE {BOOT_FLASH_CHECK,
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BOOT_FLASH_WAIT, |
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BOOT_OS_SYNC, |
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BOOT_OS_START |
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} boot_state; |
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#define SYS_PD_N_PIN GPIO_Pin_8
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#define SYS_PD_N_GPIO GPIOC
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#define SYS_SYNC_N_PIN GPIO_Pin_1
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#define SYS_SYNC_N_GPIO GPIOC
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/************************************************************************************//** |
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** \brief Initializes the backdoor entry option.
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** \return none.
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**
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****************************************************************************************/
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void BackDoorInitHook(void) |
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{ |
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backdoorOpenTime = TimerGet(); |
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boot_state = BOOT_FLASH_CHECK; |
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} /*** end of BackDoorInitHook ***/
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/************************************************************************************//** |
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** \brief Checks if it has to stay in backdoor.
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** \return BLT_TRUE if the backdoor entry is requested, BLT_FALSE otherwise.
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**
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****************************************************************************************/
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blt_bool BackDoorEntryCheck(void)
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{ |
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/* evaluate the fsm state */
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switch (boot_state) {
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case BOOT_FLASH_CHECK:
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{ |
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/* wait for a timeout */
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if (timeRanOut == BLT_FALSE) {
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if (TimerGet() > backdoorOpenTime+BACKDOOR_ENTRY_TIMEOUT_MS) {
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timeRanOut = BLT_TRUE; |
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boot_state = BOOT_FLASH_WAIT; |
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GPIO_SetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
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} |
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} |
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return BLT_TRUE;
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break;
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} |
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case BOOT_FLASH_WAIT:
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{ |
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/* wait for the SYS_SYNC_N signal to go up */
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if (GPIO_ReadInputDataBit(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN) == Bit_RESET) {
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return BLT_TRUE;
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} else {
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boot_state = BOOT_OS_SYNC; |
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return BLT_FALSE;
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} |
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break;
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} |
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default:
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return BLT_FALSE;
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break;
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} |
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return BLT_FALSE;
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} /*** end of BackDoorEntryCheck ***/
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/************************************************************************************//** |
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** \brief Checks if a backdoor entry is requested.
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** \return BLT_TRUE if the backdoor entry is requested, BLT_FALSE otherwise.
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**
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****************************************************************************************/
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blt_bool BackDoorEntryHook(void)
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{ |
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/* default implementation always activates the bootloader after a reset */
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return BLT_TRUE;
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} /*** end of BackDoorEntryHook ***/
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#endif /* BOOT_BACKDOOR_HOOKS_ENABLE > 0 */ |
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/************************************************************************************//** |
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** \brief Notice that there is still an open connection over COM
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** \return -
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**
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****************************************************************************************/
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void BackDoorComIsConnected(void) |
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{ |
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backdoorOpenTime = TimerGet(); |
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} |
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/****************************************************************************************
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* C P U D R I V E R H O O K F U N C T I O N S
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****************************************************************************************/
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#if (BOOT_CPU_USER_PROGRAM_START_HOOK > 0) |
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/************************************************************************************//** |
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** \brief Callback that gets called when the bootloader is about to exit and
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** hand over control to the user program. This is the last moment that
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** some final checking can be performed and if necessary prevent the
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** bootloader from activiting the user program.
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** \return BLT_TRUE if it is okay to start the user program, BLT_FALSE to keep
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** keep the bootloader active.
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**
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****************************************************************************************/
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blt_bool CpuUserProgramStartHook(void)
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{ |
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/* evaluate the fsm state */
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switch (boot_state) {
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case BOOT_OS_SYNC:
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{ |
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/* wait for the SYS_SYNC_N signal to go down */
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if (GPIO_ReadInputDataBit(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN) == Bit_RESET) {
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boot_state = BOOT_OS_START; |
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} |
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return BLT_FALSE;
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break;
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} |
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case BOOT_OS_START:
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{ |
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/* pull down SYS_SYNC_N to indicate that the module is busy
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* note: This is optional at this point. The OS however MUST pull down SYS_SYNC_N until it is ready */
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GPIO_ResetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
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return BLT_TRUE;
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} |
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default:
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return BLT_FALSE;
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break;
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} |
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return BLT_FALSE;
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} /*** end of CpuUserProgramStartHook ***/
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#endif /* BOOT_CPU_USER_PROGRAM_START_HOOK > 0 */ |
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/****************************************************************************************
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* N O N - V O L A T I L E M E M O R Y D R I V E R H O O K F U N C T I O N S
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****************************************************************************************/
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#if (BOOT_NVM_HOOKS_ENABLE > 0) |
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/************************************************************************************//** |
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** \brief Callback that gets called at the start of the internal NVM driver
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** initialization routine.
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** \return none.
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**
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****************************************************************************************/
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void NvmInitHook(void) |
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{ |
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} /*** end of NvmInitHook ***/
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/************************************************************************************//** |
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** \brief Callback that gets called at the start of the NVM driver write
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** routine. It allows additional memory to be operated on. If the address
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** is not within the range of the additional memory, then
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** BLT_NVM_NOT_IN_RANGE must be returned to indicate that the data hasn't
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** been written yet.
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** \param addr Start address.
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** \param len Length in bytes.
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** \param data Pointer to the data buffer.
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** \return BLT_NVM_OKAY if successful, BLT_NVM_NOT_IN_RANGE if the address is
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** not within the supported memory range, or BLT_NVM_ERROR is the write
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** operation failed.
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**
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****************************************************************************************/
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blt_int8u NvmWriteHook(blt_addr addr, blt_int32u len, blt_int8u *data) |
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{ |
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return BLT_NVM_NOT_IN_RANGE;
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} /*** end of NvmWriteHook ***/
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/************************************************************************************//** |
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** \brief Callback that gets called at the start of the NVM driver erase
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** routine. It allows additional memory to be operated on. If the address
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** is not within the range of the additional memory, then
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** BLT_NVM_NOT_IN_RANGE must be returned to indicate that the memory
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** hasn't been erased yet.
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** \param addr Start address.
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** \param len Length in bytes.
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** \return BLT_NVM_OKAY if successful, BLT_NVM_NOT_IN_RANGE if the address is
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** not within the supported memory range, or BLT_NVM_ERROR is the erase
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** operation failed.
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**
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****************************************************************************************/
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blt_int8u NvmEraseHook(blt_addr addr, blt_int32u len) |
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{ |
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return BLT_NVM_NOT_IN_RANGE;
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} /*** end of NvmEraseHook ***/
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/************************************************************************************//** |
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** \brief Callback that gets called at the end of the NVM programming session.
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** \return BLT_TRUE is successful, BLT_FALSE otherwise.
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**
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****************************************************************************************/
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blt_bool NvmDoneHook(void)
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{ |
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return BLT_TRUE;
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} /*** end of NvmDoneHook ***/
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#endif /* BOOT_NVM_HOOKS_ENABLE > 0 */ |
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#if (BOOT_NVM_CHECKSUM_HOOKS_ENABLE > 0) |
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/************************************************************************************//** |
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** \brief Verifies the checksum, which indicates that a valid user program is
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** present and can be started.
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** \return BLT_TRUE if successful, BLT_FALSE otherwise.
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**
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****************************************************************************************/
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blt_bool NvmVerifyChecksumHook(void)
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{ |
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return BLT_TRUE;
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} /*** end of NvmVerifyChecksum ***/
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/************************************************************************************//** |
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** \brief Writes a checksum of the user program to non-volatile memory. This is
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** performed once the entire user program has been programmed. Through
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** the checksum, the bootloader can check if a valid user programming is
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** present and can be started.
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** \return BLT_TRUE if successful, BLT_FALSE otherwise.
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**
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****************************************************************************************/
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blt_bool NvmWriteChecksumHook(void)
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{ |
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return BLT_TRUE;
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} |
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#endif /* BOOT_NVM_CHECKSUM_HOOKS_ENABLE > 0 */ |
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/****************************************************************************************
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* W A T C H D O G D R I V E R H O O K F U N C T I O N S
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****************************************************************************************/
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#if (BOOT_COP_HOOKS_ENABLE > 0) |
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/************************************************************************************//** |
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** \brief Callback that gets called at the end of the internal COP driver
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** initialization routine. It can be used to configure and enable the
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** watchdog.
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** \return none.
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**
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****************************************************************************************/
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void CopInitHook(void) |
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{ |
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} /*** end of CopInitHook ***/
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/************************************************************************************//** |
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** \brief Callback that gets called at the end of the internal COP driver
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** service routine. This gets called upon initialization and during
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** potential long lasting loops and routine. It can be used to service
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** the watchdog to prevent a watchdog reset.
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** \return none.
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**
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****************************************************************************************/
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void CopServiceHook(void) |
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{ |
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} /*** end of CopServiceHook ***/
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#endif /* BOOT_COP_HOOKS_ENABLE > 0 */ |
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/****************************************************************************************
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* F I L E S Y S T E M I N T E R F A C E H O O K F U N C T I O N S
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****************************************************************************************/
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#if (BOOT_FILE_SYS_ENABLE > 0) |
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/****************************************************************************************
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* Constant data declarations
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****************************************************************************************/
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/** \brief Firmware filename. */
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static const blt_char firmwareFilename[] = "/demoprog_olimex_stm32p103.srec"; |
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/****************************************************************************************
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* Local data declarations
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****************************************************************************************/
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#if (BOOT_FILE_LOGGING_ENABLE > 0) |
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/** \brief Data structure for grouping log-file related information. */
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static struct |
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{ |
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FIL handle; /**< FatFS handle to the log-file. */
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blt_bool canUse; /**< Flag to indicate if the log-file can be used. */
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} logfile; |
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#endif
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/************************************************************************************//** |
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** \brief Callback that gets called to check whether a firmware update from
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** local file storage should be started. This could for example be when
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** a switch is pressed, when a certain file is found on the local file
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** storage, etc.
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** \return BLT_TRUE if a firmware update is requested, BLT_FALSE otherwise.
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**
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****************************************************************************************/
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blt_bool FileIsFirmwareUpdateRequestedHook(void)
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{ |
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FILINFO fileInfoObject = { 0 }; /* needs to be zeroed according to f_stat docs */; |
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/* Current example implementation looks for a predetermined firmware file on the
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* SD-card. If the SD-card is accessible and the firmware file was found the firmware
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* update is started. When successfully completed, the firmware file is deleted.
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* During the firmware update, progress information is written to a file called
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* bootlog.txt and additionally outputted on UART @57600 bps for debugging purposes.
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*/
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/* check if firmware file is present and SD-card is accessible */
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if (f_stat(firmwareFilename, &fileInfoObject) == FR_OK)
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{ |
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/* check if the filesize is valid and that it is not a directory */
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if ( (fileInfoObject.fsize > 0) && (!(fileInfoObject.fattrib & AM_DIR)) ) |
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{ |
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/* all conditions are met to start a firmware update from local file storage */
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return BLT_TRUE;
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} |
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} |
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/* still here so no firmware update request is pending */
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return BLT_FALSE;
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} /*** end of FileIsFirmwareUpdateRequestedHook ***/
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/************************************************************************************//** |
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** \brief Callback to obtain the filename of the firmware file that should be
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** used during the firmware update from the local file storage. This
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** hook function is called at the beginning of the firmware update from
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** local storage sequence.
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** \return valid firmware filename with full path or BLT_NULL.
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**
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****************************************************************************************/
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const blt_char *FileGetFirmwareFilenameHook(void) |
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{ |
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return firmwareFilename;
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} /*** end of FileGetFirmwareFilenameHook ***/
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|
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#if (BOOT_FILE_STARTED_HOOK_ENABLE > 0) |
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/************************************************************************************//** |
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** \brief Callback that gets called to inform the application that a firmware
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** update from local storage just started.
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** \return none.
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**
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****************************************************************************************/
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void FileFirmwareUpdateStartedHook(void) |
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{ |
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#if (BOOT_FILE_LOGGING_ENABLE > 0) |
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/* create/overwrite the logfile */
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logfile.canUse = BLT_FALSE; |
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if (f_open(&logfile.handle, "/bootlog.txt", FA_CREATE_ALWAYS | FA_WRITE) == FR_OK) |
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{ |
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logfile.canUse = BLT_TRUE; |
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} |
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#endif
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} /*** end of FileFirmwareUpdateStartedHook ***/
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#endif /* BOOT_FILE_STARTED_HOOK_ENABLE > 0 */ |
400 |
|
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|
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#if (BOOT_FILE_COMPLETED_HOOK_ENABLE > 0) |
403 |
/************************************************************************************//** |
404 |
** \brief Callback that gets called to inform the application that a firmware
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** update was successfully completed.
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** \return none.
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**
|
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****************************************************************************************/
|
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void FileFirmwareUpdateCompletedHook(void) |
410 |
{ |
411 |
#if (BOOT_FILE_LOGGING_ENABLE > 0) |
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/* close the log file */
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if (logfile.canUse == BLT_TRUE)
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{ |
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f_close(&logfile.handle); |
416 |
} |
417 |
/* wait for all logging related transmission to complete */
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while(USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET);
|
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#endif
|
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/* now delete the firmware file from the disk since the update was successful */
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f_unlink(firmwareFilename); |
422 |
} /*** end of FileFirmwareUpdateCompletedHook ***/
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#endif /* BOOT_FILE_COMPLETED_HOOK_ENABLE > 0 */ |
424 |
|
425 |
|
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#if (BOOT_FILE_ERROR_HOOK_ENABLE > 0) |
427 |
/************************************************************************************//** |
428 |
** \brief Callback that gets called in case an error occurred during a firmware
|
429 |
** update. Refer to <file.h> for a list of available error codes.
|
430 |
** \return none.
|
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**
|
432 |
****************************************************************************************/
|
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void FileFirmwareUpdateErrorHook(blt_int8u error_code)
|
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{ |
435 |
#if (BOOT_FILE_LOGGING_ENABLE > 0) |
436 |
/* error detected which stops the firmware update, so close the log file */
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if (logfile.canUse == BLT_TRUE)
|
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{ |
439 |
f_close(&logfile.handle); |
440 |
} |
441 |
#endif
|
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} /*** end of FileFirmwareUpdateErrorHook ***/
|
443 |
#endif /* BOOT_FILE_ERROR_HOOK_ENABLE > 0 */ |
444 |
|
445 |
|
446 |
#if (BOOT_FILE_LOGGING_ENABLE > 0) |
447 |
/************************************************************************************//** |
448 |
** \brief Callback that gets called each time new log information becomes
|
449 |
** available during a firmware update.
|
450 |
** \param info_string Pointer to a character array with the log entry info.
|
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** \return none.
|
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**
|
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****************************************************************************************/
|
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void FileFirmwareUpdateLogHook(blt_char *info_string)
|
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{ |
456 |
/* write the string to the log file */
|
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if (logfile.canUse == BLT_TRUE)
|
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{ |
459 |
if (f_puts(info_string, &logfile.handle) < 0) |
460 |
{ |
461 |
logfile.canUse = BLT_FALSE; |
462 |
f_close(&logfile.handle); |
463 |
} |
464 |
} |
465 |
/* echo all characters in the string on UART */
|
466 |
while(*info_string != '\0') |
467 |
{ |
468 |
/* write character to transmit holding register */
|
469 |
USART_SendData(USART2, *info_string); |
470 |
/* wait for tx holding register to be empty */
|
471 |
while(USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET);
|
472 |
/* point to the next character in the string */
|
473 |
info_string++; |
474 |
} |
475 |
} /*** end of FileFirmwareUpdateLogHook ***/
|
476 |
#endif /* BOOT_FILE_LOGGING_ENABLE > 0 */ |
477 |
|
478 |
|
479 |
#endif /* BOOT_FILE_SYS_ENABLE > 0 */ |
480 |
|
481 |
|
482 |
/****************************************************************************************
|
483 |
* S E E D / K E Y S E C U R I T Y H O O K F U N C T I O N S
|
484 |
****************************************************************************************/
|
485 |
|
486 |
#if (BOOT_XCP_SEED_KEY_ENABLE > 0) |
487 |
/************************************************************************************//** |
488 |
** \brief Provides a seed to the XCP master that will be used for the key
|
489 |
** generation when the master attempts to unlock the specified resource.
|
490 |
** Called by the GET_SEED command.
|
491 |
** \param resource Resource that the seed if requested for (XCP_RES_XXX).
|
492 |
** \param seed Pointer to byte buffer wher the seed will be stored.
|
493 |
** \return Length of the seed in bytes.
|
494 |
**
|
495 |
****************************************************************************************/
|
496 |
blt_int8u XcpGetSeedHook(blt_int8u resource, blt_int8u *seed) |
497 |
{ |
498 |
/* request seed for unlocking ProGraMming resource */
|
499 |
if ((resource & XCP_RES_PGM) != 0) |
500 |
{ |
501 |
seed[0] = 0x55; |
502 |
} |
503 |
|
504 |
/* return seed length */
|
505 |
return 1; |
506 |
} /*** end of XcpGetSeedHook ***/
|
507 |
|
508 |
|
509 |
/************************************************************************************//** |
510 |
** \brief Called by the UNLOCK command and checks if the key to unlock the
|
511 |
** specified resource was correct. If so, then the resource protection
|
512 |
** will be removed.
|
513 |
** \param resource resource to unlock (XCP_RES_XXX).
|
514 |
** \param key pointer to the byte buffer holding the key.
|
515 |
** \param len length of the key in bytes.
|
516 |
** \return 1 if the key was correct, 0 otherwise.
|
517 |
**
|
518 |
****************************************************************************************/
|
519 |
blt_int8u XcpVerifyKeyHook(blt_int8u resource, blt_int8u *key, blt_int8u len) |
520 |
{ |
521 |
/* suppress compiler warning for unused parameter */
|
522 |
len = len; |
523 |
|
524 |
/* the example key algorithm in "FeaserKey.dll" works as follows:
|
525 |
* - PGM will be unlocked if key = seed - 1
|
526 |
*/
|
527 |
|
528 |
/* check key for unlocking ProGraMming resource */
|
529 |
if ((resource == XCP_RES_PGM) && (key[0] == (0x55-1))) |
530 |
{ |
531 |
/* correct key received for unlocking PGM resource */
|
532 |
return 1; |
533 |
} |
534 |
|
535 |
/* still here so key incorrect */
|
536 |
return 0; |
537 |
} /*** end of XcpVerifyKeyHook ***/
|
538 |
#endif /* BOOT_XCP_SEED_KEY_ENABLE > 0 */ |
539 |
|
540 |
|
541 |
/*********************************** end of hooks.c ************************************/
|