mirror of
https://github.com/licsber/micropython.git
synced 2024-09-20 09:00:23 +08:00
771c16f3d9
Prior to this commit, only sector 0 was erase/write protected, which may not be enough to protect all of mboot (especially if mboot lives at a higher address than the start of flash). This commit makes sure all internal flash sectors that mboot lives in are protected from erasing and writing. The linker script must define _mboot_writable_flash_start for this to work. Signed-off-by: Damien George <damien@micropython.org>
15 lines
428 B
Plaintext
15 lines
428 B
Plaintext
/*
|
|
Linker script fragment for mboot on an STM32xxx MCU.
|
|
This defines the memory sections for the bootloader to use.
|
|
*/
|
|
|
|
MEMORY
|
|
{
|
|
FLASH_BL (rx) : ORIGIN = 0x08000000, LENGTH = 32K
|
|
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 120K
|
|
}
|
|
|
|
/* Location from which mboot is allowed to write to flash.
|
|
Must be the start of a flash erase sector. */
|
|
_mboot_writable_flash_start = ORIGIN(FLASH_BL) + LENGTH(FLASH_BL);
|