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Original question:

SK-AM62B-P1: Correct way to flash the rootfs into the emmc

PROCESSOR-SDK-J721E: feasibility of writing the root file system to eMMC using Uniflash (UART) or Flash Writer (CCS) ?

Linto Thomas
Prodigy 40 points
Part Number: PROCESSOR-SDK-J721E
Other Parts Discussed in Thread: UNIFLASH

Tool/software:

Hello,

I would like to inquire about the feasibility of writing the root file system to eMMC using Uniflash (UART) or Flash Writer (CCS). During my attempts to write, I encountered a timeout in the eMMC driver.

Could you please clarify if this is a limitation or an unsupported feature of the driver?

I have found a related ticket on this matter and am looking forward to your expert guidance.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1350928/sk-am62b-p1-correct-way-to-flash-the-rootfs-into-the-emmc?tisearch=e2e-sitesearch&keymatch=rootfs%2525252520emmc%2525252520uniflash%2525252520stuck%2525252520at%252525252015%2525252525#

i am using the TI EVM (J721E Common Processor Board +  J721E Evaluation Module consists of a SOM (System on Module))

these are the SDK used.

ti-processor-sdk-linux-adas-j721e-evm-09_02_00_05-Linux

ti-processor-sdk-rtos-j721e-evm-08_06_01_03

Thank you.

  • 0
    TI__Mastermind 38970 points

    Hi Linto 

    Uniflash is a tool which is used to write the images to OSPI or EMMC boot 0 partition using UART interface.

    It will not be possible to flash the rootfs using uniflash there are two main reason for that 

    1. Uniflash will only write the images to the emmc boot0 area.
    2. Consider if there is a support in uniflash to write the images to the emmc UDA partition, it will be very slow as it uses UART interface.

    Please have a look at the app note to understand about the different flashing technique.

    https://www.ti.com/lit/an/spracy5/spracy5.pdf?ts=1721122426566

    Regards
    Diwakar