Eval » Historie » Revision 4
Revision 3 (Maximilian Seesslen, 17.01.2024 15:30) → Revision 4/9 (Maximilian Seesslen, 17.01.2024 17:43)
h1. Eval
Biwak supports bootloader via linkerscript.
There needs to be some communication between BL and APP;
APP->BL: start app or bl?
-BL->APP: Version of BL; does this combination work- Should be checked when flashing.
Lower bottom of stack can not be used because this can change with newer firmware release.
* Communication via option bytes: This way RAM has not to be preserved; incomplete updates are handled. Some cost.
* ISR-Table is relocated by Kokon
* When BL was used, Application does not need to config the clock any more. Can save a lot of flash
* Kokon should send article number and Bootloaderfirmware, so flash tool can verify if this is the correct image
* App clears option bytes again
Problem is: Bootloader and application probably have different configurations. An seperate build has to be triggered.
Biwak supports bootloader via linkerscript.
There needs to be some communication between BL and APP;
APP->BL: start app or bl?
-BL->APP: Version of BL; does this combination work- Should be checked when flashing.
Lower bottom of stack can not be used because this can change with newer firmware release.
* Communication via option bytes: This way RAM has not to be preserved; incomplete updates are handled. Some cost.
* ISR-Table is relocated by Kokon
* When BL was used, Application does not need to config the clock any more. Can save a lot of flash
* Kokon should send article number and Bootloaderfirmware, so flash tool can verify if this is the correct image
* App clears option bytes again
Problem is: Bootloader and application probably have different configurations. An seperate build has to be triggered.