• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 98 subscribers
  • Views 1085 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

DRA829 PSDK-L, u-boot turning off vdd_mmc1 during boot?

TDA4VM: sysfw.itb & sysfw-psdkra.itb

Sentinen.Chen
Expert 2415 points
Part Number: TDA4VM

Hi TI members:

I have a question about sysfw-psdkra.itb.

I find there is one sysfw-psdkra.itb in prebuild-image boot-j7-evm.tar.gz

and also can find same file form yocto-build deploy image folder when build finished. 

But i find even I didn't put this file to my sdcard boot partition, 

EVM board still can boot to linux successfully.

Because I didn't find related information on TI psdkla document.

So is this sysfw-psdkra.itb useless? 

BR

Sentinen Chen

  • 0
    TI__Guru** 113810 points

    Hi Sentinen,

    The sysfw.itb is definitely required for the boot up of the board, kindly check your boot partition of the SD card and check if you have the sysfw.itb file.

    sysfw-psdkra.itb

    • The sysfw-psdkra.itb is the sysfw image that needs to be used when the PSDKLA is used in conjunction with PSDKRA. 
    • If you are using just the PSDKLA (which appears to be in your case), you can use the sysfw.itb. Therefore, the sysfw-psdkra.itb is useful only in the context of PSDKRA applications.
    • The change between sysfw.itb and this sysfw-psdkra.itb is the MSMC cache configuration. Please refer to the patch 0001-turn-off-msmc-cache-for-psdkra-cache-size-0.patch that is present in meta-psdkla under recipes-bsp/ti-sci-fw/ti-sci-fw
    • When the Yocto build is done, it generates both sysfw.itb and sysfw-psdkra.itb
    • However, when you want to use it, you should rename it as sysfw.itb when you place it the boot partition.

    Please note that the Yocto build is the only supported method - out of the box, to build the sysfw-psdkra.itb. You can pick up the patch and make the adaptations.

    Regards

    Karthik