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Software Application Development building U-Boot for picozed
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Related

building U-Boot for picozed

Former Member
Former Member over 8 years ago

Hello,

I am using the picoZed SoM in my design.  I would like to target the Vivado 2014.4 version of the Xilinx tools.  I would like to build the kernel and u-boot from scratch (for a number of reasons).  It looks like picoZed is not supported in u-boot in this git branch.  A patch has been accepted here:

http://lists.denx.de/pipermail/u-boot/2015-April/210826.html

What is the best way for me to apply this patch to the 2014.4 branch in the u-boot-xlnx repo?  It looks like there are some files that have changed since this branch, and I don't really want to go down the whole crazy path of changing things and not knowing what the effect will be until I package my BOOT.BIN file.

Additionally, is there any patches that I need to apply to the kernel xilinx-v2014.4 branch to get it to boot on the picoZed?

Thanks!

-TD

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  • Former Member
    0 Former Member over 8 years ago

    Hi Tim,

      The answer to your question really depends on how you want to do this.  That patch you are looking at is for mainline, which is ahead of the version in the xilinx git.  It includes things like a menuconfig utility for u-boot, so it will work just like Linux kernel configuration instead of changing configuration files manually (some of that is in the xilinx git as well, but few people are really using it yet).   It is possible to build the mainline u-boot and get it to work with the 2014.4 kernel xilinx supplies, but there are some undocumented tricks to bridge the version differences.

    If you just want to build u-boot from the 2014.4 version in the xilinx git tree, take a look at the Ubuntu tutorial for the Mini-ITX for 2014.4.  In the u-boot section, it goes through the process of adding the zynq mini-itx to the existing release (manually), so that should explain everything that is actually going on under the covers.  Additional changes in that patch are for the menuconfig and changes in the directory structure (some of the config files have gone away, being replaced by the versions applicable to menuconfig.  You can ignore those for the 2014.4 release.

    Ron

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  • Former Member
    0 Former Member over 8 years ago

    Ron,

    Thanks for your great reply!  I did notice that the file structure was different, so just applying the patch wasn't going to fly.  I'll take a look at the ATX Ubuntu tutorial and see where I get.

    Thanks again!

    -TD

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