How can I ensure a hard reset during west flash with stm32cubeprogrammer runner when using Twister?

[NamrataGagare-eaton]

Background:
I need to perform a hard reset on STM32 H7 and U5 boards after flashing, using the STM32CubeProgrammer runner.

When I run: west flash --runner stm32cubeprogrammer --tool-opt="-hardRst"
the board performs a hard reset as expected.

However, when I try to integrate this with Twister(zephyr version - 3.6)

1. I set the environment variable:
   set ZEPHYR_FLASH_EXTRA_ARGS=--tool-opt="-hardRst"'
2. Then run either:
   west flash --runner stm32cubeprogrammer
   or
   python twister --device-testing --hardware-map "map.yml" -T <path_to_yaml file>
   But in both cases, the board only performs a soft reset (not a hard reset).

Question:
How can I ensure that Twister (and west flash when called by Twister) uses the --tool-opt="-hardRst" option so that a hard reset is performed after flashing with STM32CubeProgrammer?
Is there a way to integrate this option into Twister’s workflow, or is there a recommended approach for this scenario?

Support required:
How do I make sure that west flash --runner stm32cubeprogrammer --tool-opt="-hardRst" is effectively used by Twister for hardware reset on STM32 H7/U5 boards?

[NamrataGagare-eaton]

[URGENT REMINDER] STM32CubeProgrammer Hard Reset Option Not Working with Twister

Dear Zephyr Team,

This is a follow-up reminder regarding my previous ticket about integrating the --tool-opt="-hardRst" option with Twister for STM32 H7 and U5 boards.

Requested:
Guidance on proper integration of STM32CubeProgrammer tool options with Twister
Documentation update if this is a known limitation
Alternative approach for ensuring hard reset in automated testing scenarios

Impact: This issue is currently blocking our release testing cycle.
Could someone please provide guidance or escalate this to the appropriate team? Any workaround or proper solution would be greatly appreciated.

Thanks,
Namrata Gagare

[erwango]

Please add the following in your board.cmake file:

  board_runner_args(stm32cubeprogrammer "--tool-opt= reset=HWrst")

or

  board_runner_args(stm32cubeprogrammer "--tool-opt= mode=UR")