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Altera_Forum's avatar
Altera_Forum
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21 years ago

Bootloaders

Has anyone successfully used either U-Boot or Redboot on a NON-Linux based system? More specifically, on a MicroC/OS-II-based system? I'm having a hell of a time figuring out if I can use either of these in my system. I would rather not have to write my own bootloader. I am currently using the bootloader embedded in the EPCS controller. But, I need to be able to update the image and recover if flashing the new image fails. The only way I can see to do this is to use a secondary bootloader that will usually load from flash, but could load over comms if the image is corrupted. Any help in this area is greatly appreciated.

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  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    21 years ago

    I have managed to get u-boot running on a couple of custom niosII boards so far, and is was not too hard.

    You will need to add/modify:

    MAKEALL,

    Makefile,

    board/mycompany/myboard/myboard.c

    board/mycompany/myboard/config.mk

    include/configs/myboard.h ;main config settings

    If you look at the existing files, most things will be obvious.

    u-boot needs one hw timer, which can also be used by your app.

    The exception address in the config file must agree with sopc builder.