Commit Graph

4 Commits

Author SHA1 Message Date
chrismas9 fdbca3c143 stm32/boards/stm32f091xc.ld: Allocate space for a small filesystem.
Signed-off-by: Chris Mason <c.mason@inchipdesign.com.au>
2022-06-17 21:27:32 +10:00
Damien George 04c7cdb668 stm32: Enter bootloader via a system reset.
Entering a bootloader (ST system bootloader, or custom mboot) from software
by directly branching to it is not reliable, and the reliability of it
working can depend on the peripherals that were enabled by the application
code.  It's also not possible to branch to a bootloader if the WDT is
enabled (unless the bootloader has specific provisions to feed the WDT).

This patch changes the way a bootloader is entered from software by first
doing a complete system reset, then branching to the desired bootloader
early on in the start-up process.  The top two words of RAM (of the stack)
are reserved to store flags indicating that the bootloader should be
entered after a reset.
2019-06-25 14:15:49 +10:00
Chris Mason 14cf91f704 stm32: In link script, define start of stack separately from heap end.
Previously the end of the heap was the start (lowest address) of the stack.
With the changes in this commit these addresses are now independent,
allowing a board to place the heap and stack in separate locations.
2019-06-14 15:29:24 +10:00
Damien George 1163400039 stm32/boards: Add alt-func CSV list and linker script for STM32F091. 2018-05-28 21:49:49 +10:00