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Zedboard NVRAM

Former Member

Hi all,

Usually either with u-boot or others like the vxworks boot loader, you can change the default boot parameters and save them. However, this if your board doesn't have a NVRAM_DEVICE, to store the boot parameters, this cannot be done.

I have not been able so far to change permanently the boot parameters in my zedboard, so that after every reboot, it comes up with the default boot params.

Do you know if the zedboard comes with an NVRAM/ePROM or smth similar? Have you guys been able to permanently change boot params interactively?

Thanks a lot in advance/

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    Hi Kevin,

    Thanks for the detailed answer. I will try what you suggest, although in my case I am not using u-boot, but VxWorks bootloader. I am not sure how different it is, but I was able to actually flash the VxWorks bootloader into the QSPI flash and boot up from there. then, changed my boot parameeters, and once I rebooted....I got the default boot parameters again.

    The only way for me to get the boot parameters I wanted after a reboot, was to actually rebuild a new VxWorks bootloader, and then use the bootgen Xilins toold to generated boot image which has hardcoded the boot parameters I want.

    Thanks!

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  • 0

    Hi Kevin,

    Thanks for the detailed answer. I will try what you suggest, although in my case I am not using u-boot, but VxWorks bootloader. I am not sure how different it is, but I was able to actually flash the VxWorks bootloader into the QSPI flash and boot up from there. then, changed my boot parameeters, and once I rebooted....I got the default boot parameters again.

    The only way for me to get the boot parameters I wanted after a reboot, was to actually rebuild a new VxWorks bootloader, and then use the bootgen Xilins toold to generated boot image which has hardcoded the boot parameters I want.

    Thanks!

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