[Sdcc-user] details on STM8 bootloader RAM routines...?

[Georg Icking-K. <ge...@cr...>]

hi all,

as some of you may know, I am maintaining a tool named "stm8gal" for 
programming STM8s via UART or SPI interface. Functionality is similar to 
avrdude, only that it is for STM8 instead of Atmel.

The built-in STM8 bootloader requires uploading RAM routines for 
handling flash write/erase operations, as is described in the bootloader 
manual (UM0560). The required RAM routines are available for download 
from the STM homepage but they are closed source and subject to a 
proprietary licence. Therefore Philipp Krause requested to replace the 
non-free binary blobs by open-source routines (see 
https://github.com/gicking/stm8gal/issues/4). To do this, any 
information about the RAM routines would be helpful, e.g. how is data 
passed to them, what are the return types and values, and why are 
different routines required for the different STM8 variants and 
bootloader versions...? Any support is highly appreciated!

Thanks a lot in advance and a happy New Year to you  :-)

Ho, ho, ho,
Georg