SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world.
And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download two short videos (registration required) highlighting:

System Workbench for STM32

You are viewing a reply to Debugging reset handler  

Debugging reset handler

i see you learning the hard ways then ;)

i do not have any f030 to try out your code

i also found strange you can’t debug from the reset

Did you try settign a break pount at 0x08000000 see what is on your flash memory and what goes wrong wiht debugger ?

The way you put data in flash text is quite strange but i gues sis ok am mor use to synthax like

.data :
. = ALIGN(4);
_sdata = .; /* create a global symbol at data start */
*(.data) /* .data sections */
*(.data*) /* .data* sections */

. = ALIGN(4);
_edata = .; /* define a global symbol at data end */

As you do not have any “inititialzed” data it wan’t make any diference even that could be an issue.
also it wan’t explain why it would work w/o debugger

Some debuger/loader set ram at init from ram section they find in the elf but i do not know if that is the case for opencocd/stlink . Hslal ti be teh case i would expect it work with debuger and not witout rolleyes

they may be a lot of text data and rodata section you may miss with your ld
you shall add
same for data *(.*data*) and rodata*

that is to collect some fency section such as aligned data.b data.w etc ...

fro text some compile option coud generate mutliple text section ie text1 text2....
i think here aboutMCu GCC c/c++ optimization “place the functon in their own section”

is can see belwo section in f4 ld is that mandatory for some tumb instructon  ?
*(.glue_7) /* glue arm to thumb code */
*(.glue_7t) /* glue thumb to arm code */

i’m scared and wan’t be abble to help you much.