MCU-PLUS-SDK-AM243X: eXecute In Place (XIP) Benchmark does not work on AM243x-LP

Dominik Fischer

On the AM243x Launchpad the XIP Benchmark does not work.

I followed the steps described and flashed via python script with changing DIP switches. Unfortunately I do not get any output on the debug log and cannot debug application with "Load symbols". When connecting the cores in CCS the address where they stop are also rather strange ...

I also have a AM64x-SK and there it worked fine!

Kind regards
Dominik

over 2 years ago

0 Aakash Kedia over 2 years ago

TI__Mastermind 26025 points

Hi Dominik Fischer,

Let me check the same on my end and come back to you on this by Monday.

Best Regards,
Aakash

0 Aakash Kedia over 2 years ago in reply to Aakash Kedia

TI__Mastermind 26025 points

Hi Dominik Fischer,

We have replicated the issue. Let me get more details and come back to you on this by 3/25/2023.

Best Regards,
Aakash

0 Dominik Fischer over 2 years ago in reply to Aakash Kedia

Intellectual 480 points

One additional question: On AM64x-SK board there is a OSPI (Octal) flash assembled on AM243x a QSPI (Quad) flash. Is XIP in general supported for QSPI flash?

0 Aakash Kedia over 2 years ago in reply to Dominik Fischer

TI__Mastermind 26025 points

Hi Dominik Fischer,

No, although the controller is an OSPI controller, the QSPI flash is supported in AM243x LP (ALX package). And in both the cases, XIP is supported as well.

Best Regards,
Aakash

0 Dominik Fischer over 2 years ago in reply to Aakash Kedia

Intellectual 480 points

Hi Aakash,

anything new on this topic? You said you will come back by 3/25/2023.

0 Aakash Kedia over 2 years ago in reply to Dominik Fischer

TI__Mastermind 26025 points

Hi Dominik Fischer,

I have notified to the concerned team and the analysis for the same is in process. I will let you know if there are any updates on this.

Best Regards,
Aakash

+1 Ankur Baranwal over 2 years ago in reply to Aakash Kedia

TI__Mastermind 26205 points

Hi Domunik,

Apologies for the delayed response

This issue is fixed in 8.6 release which was release on 16th May.

If you are on previous SDK then you need to define the new section for .rodata.cfg as shown below

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    GROUP {
        .text.hwi: palign(8)
        .text.cache: palign(8)
        .text.mpu: palign(8)
        .text.boot: palign(8)
        .text:abort: palign(8) /* this helps in loading symbols when using XIP mode */
    } > MSRAM
    GROUP {
        .rodata.cfg: {} palign(8) /* This is to keep the MPU config, Cache config and other consts */
    } > MSRAM
    /* This is rest of code. This can be placed in DDR if DDR is available and needed */
    GROUP {
        .text:   {} palign(8)   /* This is where code resides */
        .rodata: {} palign(8)   /* This is where const's go */
    } > FLASH
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

    GROUP {
        .text.hwi: palign(8)
        .text.cache: palign(8)
        .text.mpu: palign(8)
        .text.boot: palign(8)
        .text:abort: palign(8) /* this helps in loading symbols when using XIP mode */
    } > MSRAM

    GROUP {
        .rodata.cfg: {} palign(8) /* This is to keep the MPU config, Cache config and other consts */
    } > MSRAM

    /* This is rest of code. This can be placed in DDR if DDR is available and needed */
    GROUP {
        .text:   {} palign(8)   /* This is where code resides */
        .rodata: {} palign(8)   /* This is where const's go */
    } > FLASH

Regards,

Ankur

0 Dominik Fischer over 2 years ago in reply to Ankur Baranwal

Intellectual 480 points

Today I had the time to test 8.6.0 and XIP benchmark, it is now working, thanks

Arm-based microcontrollers

Arm-based microcontrollers forum

MCU-PLUS-SDK-AM243X: eXecute In Place (XIP) Benchmark does not work on AM243x-LP