amiro-blt / Target / Modules / PowerManagement_1-1 / Boot / hooks.c @ 09ad5212
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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 "stm32f4xx.h" /* STM32 registers */ |
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#include "stm32f4xx_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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static blt_int32u osSyncTime;
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#define OS_SYNC_MS 1 |
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#define OS_WAIT_MS 1 |
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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_OS_WAIT |
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} boot_state; |
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#define SYS_PD_N_PIN GPIO_Pin_13
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#define SYS_PD_N_GPIO GPIOC
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#define SYS_SYNC_N_PIN GPIO_Pin_12
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#define SYS_SYNC_N_GPIO GPIOC
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#define BT_RST_PIN GPIO_Pin_15
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#define BT_RST_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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/* 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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osSyncTime = TimerGet(); |
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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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} |
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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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#if (BOOT_COM_BLUETOOTH_UART_CHANNEL_INDEX == 0) |
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/** \brief Set BLUETOOTH UART base address to USART1. */
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#define BLUETOOTH_USART_CHANNEL USART1
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#elif (BOOT_COM_BLUETOOTH_UART_CHANNEL_INDEX == 1) |
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/** \brief Set BLUETOOTH UART base address to USART2. */
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#define BLUETOOTH_USART_CHANNEL USART2
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#elif (BOOT_COM_BLUETOOTH_UART_CHANNEL_INDEX == 2) |
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/** \brief Set BLUETOOTH UART base address to USART3. */
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#define BLUETOOTH_USART_CHANNEL USART3
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#elif (BOOT_COM_BLUETOOTH_UART_CHANNEL_INDEX == 3) |
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/** \brief Set BLUETOOTH UART base address to USART4. */
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#define BLUETOOTH_USART_CHANNEL USART4
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#elif (BOOT_COM_BLUETOOTH_UART_CHANNEL_INDEX == 4) |
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/** \brief Set BLUETOOTH UART base address to USART5. */
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#define BLUETOOTH_USART_CHANNEL USART5
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#elif (BOOT_COM_BLUETOOTH_UART_CHANNEL_INDEX == 5) |
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/** \brief Set BLUETOOTH UART base address to USART6. */
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#define BLUETOOTH_USART_CHANNEL USART6
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#endif
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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 some time so all modules can detect the high SYS_SYNC_N signal */
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GPIO_SetBits(BT_RST_GPIO, BT_RST_PIN); |
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USART_Cmd(BLUETOOTH_USART_CHANNEL, DISABLE); |
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USART_DeInit(BLUETOOTH_USART_CHANNEL); |
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if (TimerGet() > osSyncTime + OS_SYNC_MS) {
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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 all modules shall exit the bootloader and start the OS */
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GPIO_ResetBits(SYS_SYNC_N_GPIO, SYS_SYNC_N_PIN); |
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osSyncTime = TimerGet(); |
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boot_state = BOOT_OS_WAIT; |
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return BLT_FALSE;
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break;
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} |
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case BOOT_OS_WAIT:
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{
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/* wait some time so all module can detect the low SYS_SYNC_N signal */
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if (TimerGet() > osSyncTime + OS_WAIT_MS) {
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return BLT_TRUE;
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} else {
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return BLT_FALSE;
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} |
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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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/* okay to start the user program */
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return BLT_TRUE;
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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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| 395 |
* 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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| 402 |
{
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| 403 |
/* 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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| 422 |
****************************************************************************************/
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const blt_char *FileGetFirmwareFilenameHook(void) |
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{
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return firmwareFilename;
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| 426 |
} /*** end of FileGetFirmwareFilenameHook ***/
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| 427 |
|
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#if (BOOT_FILE_STARTED_HOOK_ENABLE > 0) |
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/************************************************************************************//** |
| 431 |
** \brief Callback that gets called to inform the application that a firmware
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| 432 |
** update from local storage just started.
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** \return none.
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| 434 |
**
|
| 435 |
****************************************************************************************/
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void FileFirmwareUpdateStartedHook(void) |
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{
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| 438 |
#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 */ |
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|
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#if (BOOT_FILE_COMPLETED_HOOK_ENABLE > 0) |
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/************************************************************************************//** |
| 452 |
** \brief Callback that gets called to inform the application that a firmware
|
| 453 |
** update was successfully completed.
|
| 454 |
** \return none.
|
| 455 |
**
|
| 456 |
****************************************************************************************/
|
| 457 |
void FileFirmwareUpdateCompletedHook(void) |
| 458 |
{
|
| 459 |
#if (BOOT_FILE_LOGGING_ENABLE > 0) |
| 460 |
/* close the log file */
|
| 461 |
if (logfile.canUse == BLT_TRUE)
|
| 462 |
{
|
| 463 |
f_close(&logfile.handle); |
| 464 |
} |
| 465 |
/* wait for all logging related transmission to complete */
|
| 466 |
while(USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET);
|
| 467 |
#endif
|
| 468 |
/* now delete the firmware file from the disk since the update was successful */
|
| 469 |
f_unlink(firmwareFilename); |
| 470 |
} /*** end of FileFirmwareUpdateCompletedHook ***/
|
| 471 |
#endif /* BOOT_FILE_COMPLETED_HOOK_ENABLE > 0 */ |
| 472 |
|
| 473 |
|
| 474 |
#if (BOOT_FILE_ERROR_HOOK_ENABLE > 0) |
| 475 |
/************************************************************************************//** |
| 476 |
** \brief Callback that gets called in case an error occurred during a firmware
|
| 477 |
** update. Refer to <file.h> for a list of available error codes.
|
| 478 |
** \return none.
|
| 479 |
**
|
| 480 |
****************************************************************************************/
|
| 481 |
void FileFirmwareUpdateErrorHook(blt_int8u error_code)
|
| 482 |
{
|
| 483 |
#if (BOOT_FILE_LOGGING_ENABLE > 0) |
| 484 |
/* error detected which stops the firmware update, so close the log file */
|
| 485 |
if (logfile.canUse == BLT_TRUE)
|
| 486 |
{
|
| 487 |
f_close(&logfile.handle); |
| 488 |
} |
| 489 |
#endif
|
| 490 |
} /*** end of FileFirmwareUpdateErrorHook ***/
|
| 491 |
#endif /* BOOT_FILE_ERROR_HOOK_ENABLE > 0 */ |
| 492 |
|
| 493 |
|
| 494 |
#if (BOOT_FILE_LOGGING_ENABLE > 0) |
| 495 |
/************************************************************************************//** |
| 496 |
** \brief Callback that gets called each time new log information becomes
|
| 497 |
** available during a firmware update.
|
| 498 |
** \param info_string Pointer to a character array with the log entry info.
|
| 499 |
** \return none.
|
| 500 |
**
|
| 501 |
****************************************************************************************/
|
| 502 |
void FileFirmwareUpdateLogHook(blt_char *info_string)
|
| 503 |
{
|
| 504 |
/* write the string to the log file */
|
| 505 |
if (logfile.canUse == BLT_TRUE)
|
| 506 |
{
|
| 507 |
if (f_puts(info_string, &logfile.handle) < 0) |
| 508 |
{
|
| 509 |
logfile.canUse = BLT_FALSE; |
| 510 |
f_close(&logfile.handle); |
| 511 |
} |
| 512 |
} |
| 513 |
/* echo all characters in the string on UART */
|
| 514 |
while(*info_string != '\0') |
| 515 |
{
|
| 516 |
/* write character to transmit holding register */
|
| 517 |
USART_SendData(USART2, *info_string); |
| 518 |
/* wait for tx holding register to be empty */
|
| 519 |
while(USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET);
|
| 520 |
/* point to the next character in the string */
|
| 521 |
info_string++; |
| 522 |
} |
| 523 |
} /*** end of FileFirmwareUpdateLogHook ***/
|
| 524 |
#endif /* BOOT_FILE_LOGGING_ENABLE > 0 */ |
| 525 |
|
| 526 |
|
| 527 |
#endif /* BOOT_FILE_SYS_ENABLE > 0 */ |
| 528 |
|
| 529 |
|
| 530 |
/****************************************************************************************
|
| 531 |
* 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
|
| 532 |
****************************************************************************************/
|
| 533 |
|
| 534 |
#if (BOOT_XCP_SEED_KEY_ENABLE > 0) |
| 535 |
/************************************************************************************//** |
| 536 |
** \brief Provides a seed to the XCP master that will be used for the key
|
| 537 |
** generation when the master attempts to unlock the specified resource.
|
| 538 |
** Called by the GET_SEED command.
|
| 539 |
** \param resource Resource that the seed if requested for (XCP_RES_XXX).
|
| 540 |
** \param seed Pointer to byte buffer wher the seed will be stored.
|
| 541 |
** \return Length of the seed in bytes.
|
| 542 |
**
|
| 543 |
****************************************************************************************/
|
| 544 |
blt_int8u XcpGetSeedHook(blt_int8u resource, blt_int8u *seed) |
| 545 |
{
|
| 546 |
/* request seed for unlocking ProGraMming resource */
|
| 547 |
if ((resource & XCP_RES_PGM) != 0) |
| 548 |
{
|
| 549 |
seed[0] = 0x55; |
| 550 |
} |
| 551 |
|
| 552 |
/* return seed length */
|
| 553 |
return 1; |
| 554 |
} /*** end of XcpGetSeedHook ***/
|
| 555 |
|
| 556 |
|
| 557 |
/************************************************************************************//** |
| 558 |
** \brief Called by the UNLOCK command and checks if the key to unlock the
|
| 559 |
** specified resource was correct. If so, then the resource protection
|
| 560 |
** will be removed.
|
| 561 |
** \param resource resource to unlock (XCP_RES_XXX).
|
| 562 |
** \param key pointer to the byte buffer holding the key.
|
| 563 |
** \param len length of the key in bytes.
|
| 564 |
** \return 1 if the key was correct, 0 otherwise.
|
| 565 |
**
|
| 566 |
****************************************************************************************/
|
| 567 |
blt_int8u XcpVerifyKeyHook(blt_int8u resource, blt_int8u *key, blt_int8u len) |
| 568 |
{
|
| 569 |
/* suppress compiler warning for unused parameter */
|
| 570 |
len = len; |
| 571 |
|
| 572 |
/* the example key algorithm in "FeaserKey.dll" works as follows:
|
| 573 |
* - PGM will be unlocked if key = seed - 1
|
| 574 |
*/
|
| 575 |
|
| 576 |
/* check key for unlocking ProGraMming resource */
|
| 577 |
if ((resource == XCP_RES_PGM) && (key[0] == (0x55-1))) |
| 578 |
{
|
| 579 |
/* correct key received for unlocking PGM resource */
|
| 580 |
return 1; |
| 581 |
} |
| 582 |
|
| 583 |
/* still here so key incorrect */
|
| 584 |
return 0; |
| 585 |
} /*** end of XcpVerifyKeyHook ***/
|
| 586 |
#endif /* BOOT_XCP_SEED_KEY_ENABLE > 0 */ |
| 587 |
|
| 588 |
|
| 589 |
/*********************************** end of hooks.c ************************************/
|