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Original question:

IWRL6432BOOST: IWRL6432 Bootloader Flow

IWRL6432BOOST: Bootloader Flow

Yohennas Folly
Prodigy 90 points
Part Number: IWRL6432BOOST
Other Parts Discussed in Thread: IWRL6432, IWR6843

Hi,

I wanted to check whether the bootloader flow, or any additional information on the IWRL6432 bootloader has been released yet. This post: https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1216819/iwrl6432boost-iwrl6432-bootloader-flow from 10 months ago states that the bootloader flow is not yet released. Has this changed? If not is the IWR6843 Bootloader Flow representative of the IWRL6432? 

Thanks

  • 0
    TI__Mastermind 19520 points

    Hello.

    This document is not available yet.  However, there is some information on the bootloader flow on a high-level in the TRM for the IWRL6432, which I have linked here.

    Sincerely,

    Santosh

  • 0 in reply to Santosh Krishnan
    Prodigy 90 points

    Hi Santosh,

    After having read the documentation I just want to confirm a few things:

    • It very much seems as if the RBL comes pre-loaded onto the chip and cannot be changed/updated, is this correct? If we wanted to create a custom RBL at some point in the future, would there be anyway to update the current RBL to the custom version as things currently stand?
    • Is it possible for us to get access to the RBL source code.
    • There seems to be some self-tests that are built into the SDK, one of these is PBIST. Is this enabled by default? If not how would we go about enabling this feature?
  • 0 in reply to Yohennas Folly
    TI__Mastermind 37805 points

    Hi,

    Yohennas Folly said:
    • It very much seems as if the RBL comes pre-loaded onto the chip and cannot be changed/updated, is this correct? If we wanted to create a custom RBL at some point in the future, would there be anyway to update the current RBL to the custom version as things currently stand?

    The RBL is not modifiable. If you want a custom bootloader, I would recommend the SBL (Secondary Bootloader).

    Santosh will respond shortly to your other questions.

    Best,

    Nate

  • 0 in reply to Nathan Block
    Prodigy 90 points

    Hi Nate,

    I just want to check whether by Secondary bootloader do you mean the secondary boot mode detailed in the TRM that Santosh mentioned, or is this something else entirely? If so is there anywhere that references it?

  • 0 in reply to Yohennas Folly
    TI__Mastermind 19520 points

    Hello.

    Yohennas Folly said:
    If so is there anywhere that references it?

    You can find information on the secondary bootloader in the SDK under <mmwave-l-sdk-install-path>/examples/drivers/boot/sbl.  This is an application that gets flashed onto the device that will allow you to either send a binary via UART or pull from a partition in memory that stores the factory default image(can be customized).  The readme for this example explains how to get started with running this program.

    Sincerely,

    Santosh