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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 (registration required) various documents highlighting:

System Workbench for STM32


Connect to custom board STM32L053 - STLINK-V2 - SWD

Well that changed some stuff for me. Now I’m getting the following:

Open On-Chip Debugger 0.10.0-dev-00005-g4030e1c-dirty (2017-10-24-07:56)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
none separate
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
adapter speed: 950 kHz
adapter_nsrst_delay: 100
Info : clock speed 950 kHz
Info : STLINK v2 JTAG v29 API v2 SWIM v7 VID 0x0483 PID 0x3748
Info : vid/pid are not identical: 0x0483/0x374B 0x0483/0x3748
Info : using stlink api v2
Info : Target voltage: 3.261782
Info : Stlink adapter speed set to 950 kHz
Info : STM32F030R8Tx.cpu: hardware has 4 breakpoints, 2 watchpoints
Info : Stlink adapter speed set to 950 kHz
adapter speed: 950 kHz
STM32F030R8Tx.cpu: target state: halted
target halted due to debug-request, current mode: Thread
xPSR: 0xc1000000 pc: 0xfffffffe msp: 0xfffffffc
in procedure ‘program’
in procedure ‘reset’ called at file “embedded:startup.tcl”, line 478
in procedure ‘ocd_bouncer’
in procedure ‘ocd_process_reset’
in procedure ‘ocd_process_reset_inner’ called at file “embedded:startup.tcl”, line 248
in procedure ‘STM32F030R8Tx.cpu’ called at file “embedded:startup.tcl”, line 370
in procedure ‘ocd_bouncer’

    • Programming Started **

auto erase enabled
Error: Cannot identify target as a stm32x
Error: auto_probe failed

    • Programming Failed **

shutdown command invoked