Or perhaps you deleted the GPT table, and are now using an msdos partition table. Perhaps it was corrupted - possibly by a program that doesn't understand GPT partition tables. However, it does not have a valid fake msdos partition table, as it should. dev/xxx contains GPT signatures, indicating that it has a GPT table. $ cp u-boot-variscite.bbappend u-boot-fw-utils.Ubuntu images (and potentially some other related GNU/Linux distributions) have a peculiar format that allows the image to boot without any further modification from both CDs and USB drives.Ī consequence of this enhancement is that some programs, like parted get confused about the drive's format and partition table, printing warnings such as: SRCREV = " The commit id you'd like to use" UBOOT_SRC = "git:/// your_account/uboot-imx.git protocol=git"
U boot source update#
Update the recipes to use your remote repository instead of the default one:
U boot source code#
Using this method Yocto will take the source code from your own remote repository on github:Ĭreate your own github account and upload your proprietary U-Boot to a new repository:įor example, you can fork our repository to your own account by visiting the following link and clicking on "Fork" at the top right of the screen.Īlternatively, you can clone our repository to your local machine, and push it later to your own account.
(If you do so, make sure to run " bitbake -c cleansstate virtual/bootloader" before rebuilding U-Boot) 3 Use your own remote repository on github UBOOT_SRC = "git://$" during development to get the latest commit of the branch Update the recipes to use the local repository instead of the default one:Īnd append the following lines to it (see the previous section for listing the commits or getting the latest commit id): $ git commit -a -m "my_m圆var_som_changes" Make your changes in the source code and commit them:Īfter making changes in the source code you need to commit them. Using this method Yocto will take the U-Boot source from a local repository instead of our remote ones on github: $ cp u-boot-variscite.bbappend u-boot-fw-utils.bbappend SRC_URI += "file://my_m圆var_som_changes.diff" $ cp ~/var-fslc-yocto/local_repos/uboot-imx/my_m圆var_som_changes.diff files/ $ cd ~/var-fslc-yocto/sources/meta-variscite-fslc/recipes-bsp/u-boot/ $ gedit board/variscite/m圆var_som/m圆var_som.c $ cd ~/var-fslc-yocto/local_repos/uboot-imx
U boot source Patch#
You can use either diff or patch file types. Make your changes in the source code and create a patch: $ cp -a tmp/work/var_som_m圆-fslc-linux-gnueabi/u-boot-variscite/1.0-r0/git/./local_repos/uboot-imx Follow the first part of step 4 of the same page, to source the setup-environment script (stop after that - don't build any image).Follow steps 1-3 of the Build Yocto from source code page.Using this method Yocto will take the source code from our default remote repository, and apply your patches to it before building it: fsl-image-gui) and the updated U-Boot will be used, or you can bitbake U-Boot alone by running " bitbake virtual/bootloader" (see the Build Yocto from source code page for the initial setup and for more info on using bitbake).ġ Add your own patches on top of our source code 3 Use your own remote repository on githubĬhoose one of the following three methods to customize U-Boot.Īfter following one of the below methods you can either bitbake your complete image (e.g.1 Add your own patches on top of our source code.
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