[STM32F730] QSPI external loader - Warn : no flash bank found for address 90000000

[LCRUZ.9]

Hello,

I am using the XIP functionalities over QSPI on the EvalBoard STM32F7308-DK. I got the launcher working without problems (jump to 0x90000000U, which is the QSPI base address). I also got a basic demo (toggle led) working from the external QSPI.

Now I am trying to do write my own program. I configured the linker file (STM32F730I8Kx_FLASH.ld) like this:

_Min_Heap_Size = 0x400;

_Min_Stack_Size = 0x800;

MEMORY

{

FLASH (rx)   : ORIGIN = 0x90000000, LENGTH = 65536K

RAM (xrw)   : ORIGIN = 0x20000000, LENGTH = 256K

}

I also added APPLICATION_ADDRESS=0x90000000U to the preprocessor settings, and modified system_stm32f7xx.c with this:

SCB->VTOR = APPLICATION_ADDRESS | VECT_TAB_OFFSET;

The compilations finished successfully and the .hex file is generated, pointing to 0x90000000. If I flash the .hex file using STM32CubeProgrammer the program runs well. But the problem that I am encountering is that I cannot run it directly from SW4STM32. I compared my project with the toggle led example (which I can launch directly from SW4STM32) and the are, a priori, no differences.

It may come from the OpenODC configuration, but I am not sure. Do you have an idea?

Thank you in advance.

Luis

[Andreas Bolsch]

I presume "OpenODC" means "OpenOCD"? If yes: The required driver isn't included in stock OpenOCD. You might use either one of these patches:

http://openocd.zylin.com/4321

http://openocd.zylin.com/4760

[Tesla DeLorean]

Your tools actually needs to have loader code to support external flash as wired and configured on a specific board design.

Keil for example has code supporting the QSPI devices on the STM32F746G-DISCO and STM32F7308-DK equivalent.

C:\Keil5xx\ARM\PACK\Keil\STM32F7xx_DFP\2.11.0\Flash\STM32F7xx_QSPI_Disco.FLM

STM32F746G-DISCO_N25Q128A