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

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Change application on Reset !


In that case, this could be a solution :

  ldr r0, =0x08019F40
  bx  r0

  /* boot swap management */
  ldr r0, =0x20000270
  ldr r1, =0xFEED0001
  ldr r2, [r0]
  cmp r1, r2
  bne SwapApp
  /* end of boot swap management */

  ldr   sp, =_estack      /* set stack pointer */