188 lines
8.5 KiB
C
188 lines
8.5 KiB
C
/****************************************************************************************
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| Description: bootloader callback source file
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| File Name: hooks.c
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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) 2011 by Feaser http://www.feaser.com All rights reserved
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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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| 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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| 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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| 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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/****************************************************************************************
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* Include files
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****************************************************************************************/
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#include "boot.h" /* bootloader generic header */
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#include "lpc2294.h" /* CPU register definitions */
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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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/****************************************************************************************
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** NAME: BackDoorInitHook
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** PARAMETER: none
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** RETURN VALUE: none
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** DESCRIPTION: Initializes the backdoor entry option.
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**
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****************************************************************************************/
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void BackDoorInitHook(void)
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{
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/* configure the button connected to P0.16 as a digital input */
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IO0DIR &= ~(1<<16);
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} /*** end of BackDoorInitHook ***/
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/****************************************************************************************
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** NAME: BackDoorEntryHook
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** PARAMETER: none
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** RETURN VALUE: BLT_TRUE if the backdoor entry is requested, BLT_FALSE otherwise.
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** DESCRIPTION: Checks if a backdoor entry is requested.
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**
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****************************************************************************************/
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blt_bool BackDoorEntryHook(void)
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{
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/* button P0.16 has a pullup, so will read high by default. enter backdoor only when
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* this button is pressed. this is the case when it reads low */
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if ((IO0PIN & (1<<16)) == 0)
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{
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return BLT_TRUE;
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}
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return BLT_FALSE;
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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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* 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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** NAME: NvmInitHook
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** PARAMETER: none
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** RETURN VALUE: none
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** DESCRIPTION: Callback that gets called at the start of the internal NVM driver
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** initialization routine.
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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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** NAME: NvmWriteHook
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** PARAMETER: addr start address
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** len length in bytes
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** data pointer to the data buffer.
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** RETURN VALUE: BTL_NVM_OKAY if successful, BTL_NVM_NOT_IN_RANGE if the address is
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** not within the supported memory range, or BTL_NVM_ERROR is the write
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** operation failed.
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** DESCRIPTION: 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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** BTL_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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**
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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 BTL_NVM_NOT_IN_RANGE;
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} /*** end of NvmWriteHook ***/
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/****************************************************************************************
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** NAME: NvmEraseHook
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** PARAMETER: addr start address
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** len length in bytes
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** RETURN VALUE: BTL_NVM_OKAY if successful, BTL_NVM_NOT_IN_RANGE if the address is
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** not within the supported memory range, or BTL_NVM_ERROR is the erase
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** operation failed.
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** DESCRIPTION: 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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** BTL_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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**
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****************************************************************************************/
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blt_bool NvmEraseHook(blt_addr addr, blt_int32u len)
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{
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return BTL_NVM_NOT_IN_RANGE;
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} /*** end of NvmEraseHook ***/
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/****************************************************************************************
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** NAME: NvmDoneHook
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** PARAMETER: none
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** RETURN VALUE: BLT_TRUE is successful, BLT_FALSE otherwise.
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** DESCRIPTION: Callback that gets called at the end of the NVM programming session.
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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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/****************************************************************************************
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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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** NAME: CopInitHook
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** PARAMETER: none
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** RETURN VALUE: none
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** DESCRIPTION: 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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**
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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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** NAME: CopServiceHook
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** PARAMETER: none
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** RETURN VALUE: none
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** DESCRIPTION: 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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**
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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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/*********************************** end of hooks.c ************************************/
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