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openblt/Target/Demo/ARMCM3_STM32_Olimex_STM32P1.../Boot/hooks.c

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/****************************************************************************************
| Description: bootloader callback source file
| File Name: hooks.c
|
|----------------------------------------------------------------------------------------
| C O P Y R I G H T
|----------------------------------------------------------------------------------------
| Copyright (c) 2011 by Feaser http://www.feaser.com All rights reserved
|
|----------------------------------------------------------------------------------------
| L I C E N S E
|----------------------------------------------------------------------------------------
| This file is part of OpenBLT. OpenBLT 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.
|
| OpenBLT 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 OpenBLT.
| If not, see <http://www.gnu.org/licenses/>.
|
| A special exception to the GPL is included to allow you to distribute a combined work
| that includes OpenBLT without being obliged to provide the source code for any
| proprietary components. The exception text is included at the bottom of the license
| file <license.html>.
|
****************************************************************************************/
/****************************************************************************************
* Include files
****************************************************************************************/
#include "boot.h" /* bootloader generic header */
#if (BOOT_FILE_LOGGING_ENABLE > 0)
#include "stm32f10x.h" /* STM32 registers */
#include "stm32f10x_conf.h" /* STM32 peripheral drivers */
#endif
/****************************************************************************************
* 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
****************************************************************************************/
#if (BOOT_BACKDOOR_HOOKS_ENABLE > 0)
/****************************************************************************************
** NAME: BackDoorInitHook
** PARAMETER: none
** RETURN VALUE: none
** DESCRIPTION: Initializes the backdoor entry option.
**
****************************************************************************************/
void BackDoorInitHook(void)
{
} /*** end of BackDoorInitHook ***/
/****************************************************************************************
** NAME: BackDoorEntryHook
** PARAMETER: none
** RETURN VALUE: BLT_TRUE if the backdoor entry is requested, BLT_FALSE otherwise.
** DESCRIPTION: Checks if a backdoor entry is requested.
**
****************************************************************************************/
blt_bool BackDoorEntryHook(void)
{
/* default implementation always activates the bootloader after a reset */
return BLT_TRUE;
} /*** end of BackDoorEntryHook ***/
#endif /* BOOT_BACKDOOR_HOOKS_ENABLE > 0 */
/****************************************************************************************
* C P U D R I V E R H O O K F U N C T I O N S
****************************************************************************************/
#if (BOOT_CPU_USER_PROGRAM_START_HOOK > 0)
/****************************************************************************************
** NAME: CpuUserProgramStartHook
** PARAMETER: none
** RETURN VALUE: BLT_TRUE if it is okay to start the user program, BLT_FALSE to keep
** keep the bootloader active.
** DESCRIPTION: Callback that gets called when the bootloader is about to exit and
** hand over control to the user program. This is the last moment that
** some final checking can be performed and if necessary prevent the
** bootloader from activiting the user program.
**
****************************************************************************************/
blt_bool CpuUserProgramStartHook(void)
{
/* okay to start the user program */
return BLT_TRUE;
} /*** end of CpuUserProgramStartHook ***/
#endif /* BOOT_CPU_USER_PROGRAM_START_HOOK > 0 */
/****************************************************************************************
* 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
****************************************************************************************/
#if (BOOT_NVM_HOOKS_ENABLE > 0)
/****************************************************************************************
** NAME: NvmInitHook
** PARAMETER: none
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called at the start of the internal NVM driver
** initialization routine.
**
****************************************************************************************/
void NvmInitHook(void)
{
} /*** end of NvmInitHook ***/
/****************************************************************************************
** NAME: NvmWriteHook
** PARAMETER: addr start address
** len length in bytes
** data pointer to the data buffer.
** RETURN VALUE: BLT_NVM_OKAY if successful, BLT_NVM_NOT_IN_RANGE if the address is
** not within the supported memory range, or BLT_NVM_ERROR is the write
** operation failed.
** DESCRIPTION: Callback that gets called at the start of the NVM driver write
** routine. It allows additional memory to be operated on. If the address
** is not within the range of the additional memory, then
** BLT_NVM_NOT_IN_RANGE must be returned to indicate that the data hasn't
** been written yet.
**
**
****************************************************************************************/
blt_int8u NvmWriteHook(blt_addr addr, blt_int32u len, blt_int8u *data)
{
return BLT_NVM_NOT_IN_RANGE;
} /*** end of NvmWriteHook ***/
/****************************************************************************************
** NAME: NvmEraseHook
** PARAMETER: addr start address
** len length in bytes
** RETURN VALUE: BLT_NVM_OKAY if successful, BLT_NVM_NOT_IN_RANGE if the address is
** not within the supported memory range, or BLT_NVM_ERROR is the erase
** operation failed.
** DESCRIPTION: Callback that gets called at the start of the NVM driver erase
** routine. It allows additional memory to be operated on. If the address
** is not within the range of the additional memory, then
** BLT_NVM_NOT_IN_RANGE must be returned to indicate that the memory
** hasn't been erased yet.
**
****************************************************************************************/
blt_int8u NvmEraseHook(blt_addr addr, blt_int32u len)
{
return BLT_NVM_NOT_IN_RANGE;
} /*** end of NvmEraseHook ***/
/****************************************************************************************
** NAME: NvmDoneHook
** PARAMETER: none
** RETURN VALUE: BLT_TRUE is successful, BLT_FALSE otherwise.
** DESCRIPTION: Callback that gets called at the end of the NVM programming session.
**
****************************************************************************************/
blt_bool NvmDoneHook(void)
{
return BLT_TRUE;
} /*** end of NvmDoneHook ***/
#endif /* BOOT_NVM_HOOKS_ENABLE > 0 */
/****************************************************************************************
* 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
****************************************************************************************/
#if (BOOT_COP_HOOKS_ENABLE > 0)
/****************************************************************************************
** NAME: CopInitHook
** PARAMETER: none
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called at the end of the internal COP driver
** initialization routine. It can be used to configure and enable the
** watchdog.
**
****************************************************************************************/
void CopInitHook(void)
{
} /*** end of CopInitHook ***/
/****************************************************************************************
** NAME: CopServiceHook
** PARAMETER: none
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called at the end of the internal COP driver
** service routine. This gets called upon initialization and during
** potential long lasting loops and routine. It can be used to service
** the watchdog to prevent a watchdog reset.
**
****************************************************************************************/
void CopServiceHook(void)
{
} /*** end of CopServiceHook ***/
#endif /* BOOT_COP_HOOKS_ENABLE > 0 */
/****************************************************************************************
* 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
****************************************************************************************/
#if (BOOT_FILE_SYS_ENABLE > 0)
/****************************************************************************************
* Constant data declarations
****************************************************************************************/
static const blt_char firmwareFilename[] = "/demoprog_olimex_stm32p103.srec";
/****************************************************************************************
* Local data declarations
****************************************************************************************/
#if (BOOT_FILE_LOGGING_ENABLE > 0)
static struct
{
FIL handle;
blt_bool canUse;
} logfile;
#endif
/****************************************************************************************
** NAME: FileIsFirmwareUpdateRequestedHook
** PARAMETER: none
** RETURN VALUE: BLT_TRUE if a firmware update is requested, BLT_FALSE otherwise.
** DESCRIPTION: Callback that gets called continuously when the bootloader is idle to
** check whether a firmware update from local file storage should be
** started. This could for example be when a switch is pressed, when a
** certain file is found on the local file storage, etc.
**
****************************************************************************************/
blt_bool FileIsFirmwareUpdateRequestedHook(void)
{
FILINFO fileInfoObject = { 0 }; /* needs to be zeroed according to f_stat docs */;
/* Current example implementation looks for a predetermined firmware file on the
* SD-card. If the SD-card is accessible and the firmware file was found the firmware
* update is started. When successfully completed, the firmware file is deleted.
* During the firmware update, progress information is written to a file called
* bootlog.txt and additionally outputted on UART @57600 bps for debugging purposes.
*/
/* check if firmware file is present and SD-card is accessible */
if (f_stat(firmwareFilename, &fileInfoObject) == FR_OK)
{
/* check if the filesize is valid and that it is not a directory */
if ( (fileInfoObject.fsize > 0) && (!(fileInfoObject.fattrib & AM_DIR)) )
{
/* all conditions are met to start a firmware update from local file storage */
return BLT_TRUE;
}
}
/* still here so no firmware update request is pending */
return BLT_FALSE;
} /*** end of FileIsFirmwareUpdateRequestedHook ***/
/****************************************************************************************
** NAME: FileGetFirmwareFilenameHook
** PARAMETER: none
** RETURN VALUE: valid firmware filename with full path or BLT_NULL.
** DESCRIPTION: Callback to obtain the filename of the firmware file that should be
** used during the firmware update from the local file storage. This
** hook function is called at the beginning of the firmware update from
** local storage sequence.
**
****************************************************************************************/
const blt_char *FileGetFirmwareFilenameHook(void)
{
return firmwareFilename;
} /*** end of FileGetFirmwareFilenameHook ***/
#if (BOOT_FILE_STARTED_HOOK_ENABLE > 0)
/****************************************************************************************
** NAME: FileFirmwareUpdateStartedHook
** PARAMETER: none
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called to inform the application that a firmware
** update from local storage just started.
**
****************************************************************************************/
void FileFirmwareUpdateStartedHook(void)
{
#if (BOOT_FILE_LOGGING_ENABLE > 0)
/* create/overwrite the logfile */
logfile.canUse = BLT_FALSE;
if (f_open(&logfile.handle, "/bootlog.txt", FA_CREATE_ALWAYS | FA_WRITE) == FR_OK)
{
logfile.canUse = BLT_TRUE;
}
#endif
} /*** end of FileFirmwareUpdateStartedHook ***/
#endif /* BOOT_FILE_STARTED_HOOK_ENABLE > 0 */
#if (BOOT_FILE_COMPLETED_HOOK_ENABLE > 0)
/****************************************************************************************
** NAME: FileFirmwareUpdateCompletedHook
** PARAMETER: none
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called to inform the application that a firmware
** update was successfully completed.
**
****************************************************************************************/
void FileFirmwareUpdateCompletedHook(void)
{
#if (BOOT_FILE_LOGGING_ENABLE > 0)
/* close the log file */
if (logfile.canUse == BLT_TRUE)
{
f_close(&logfile.handle);
}
/* wait for all logging related transmission to complete */
while(USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET);
#endif
/* now delete the firmware file from the disk since the update was successful */
f_unlink(firmwareFilename);
} /*** end of FileFirmwareUpdateCompletedHook ***/
#endif /* BOOT_FILE_COMPLETED_HOOK_ENABLE > 0 */
#if (BOOT_FILE_ERROR_HOOK_ENABLE > 0)
/****************************************************************************************
** NAME: FileFirmwareUpdateErrorHook
** PARAMETER: error_code additional information on the error that occurred.
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called in case an error occurred during a firmware
** update. Refer to <file.h> for a list of available error codes.
**
****************************************************************************************/
void FileFirmwareUpdateErrorHook(blt_int8u error_code)
{
#if (BOOT_FILE_LOGGING_ENABLE > 0)
/* error detected which stops the firmware update, so close the log file */
if (logfile.canUse == BLT_TRUE)
{
f_close(&logfile.handle);
}
#endif
} /*** end of FileFirmwareUpdateErrorHook ***/
#endif /* BOOT_FILE_ERROR_HOOK_ENABLE > 0 */
#if (BOOT_FILE_LOGGING_ENABLE > 0)
/****************************************************************************************
** NAME: FileFirmwareUpdateLogHook
** PARAMETER: info_string pointer to a character array with the log entry info.
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called each time new log information becomes
** available during a firmware update.
**
****************************************************************************************/
void FileFirmwareUpdateLogHook(blt_char *info_string)
{
/* write the string to the log file */
if (logfile.canUse == BLT_TRUE)
{
if (f_puts(info_string, &logfile.handle) < 0)
{
logfile.canUse = BLT_FALSE;
f_close(&logfile.handle);
}
}
/* echo all characters in the string on UART */
while(*info_string != '\0')
{
/* write character to transmit holding register */
USART_SendData(USART2, *info_string);
/* wait for tx holding register to be empty */
while(USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET);
/* point to the next character in the string */
info_string++;
}
} /*** end of FileFirmwareUpdateLogHook ***/
#endif /* BOOT_FILE_LOGGING_ENABLE > 0 */
#endif /* BOOT_FILE_SYS_ENABLE > 0 */
/*********************************** end of hooks.c ************************************/
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