Many machine configurations will probably have this in their setup already. In U-Boot, you can directly export the available block devices (sd/mmc/usb) as USB mass storage devices with ums command: help ums ums - Use the UMS USB Mass Storage Usage: ums
Implementation using PREFERRED_PROVIDER, like this: PREFERRED_PROVIDER_u-boot = "u-boot-my-fork" In the machine section of the board, you need to select the actual u-boot Mender has a dependency on u-boot, but the project's U-Boot likely hasĪnother name, therefore it is important to mark the project's fork as aĬomponent that provides u-boot. It is available for a number of computer architectures, including 68k, ARM, Blackfin. Recipe for the U-Boot fork: require recipes-bsp/u-boot/u-boot-mender.inc Das U-Boot (subtitled 'the Universal Boot Loader' and often shortened to U-Boot see History for more about the name) is an open-source, primary boot loader used in embedded devices to package the instructions to boot the device's operating system kernel. The recipe needs to include u-boot-mender.inc, in order to incorporate the The following commands are known to U-Boot 2012.10, a recent version built for the BeagleBone which I am using because it includes the useful bootz command (thanks to Michael Haberler for pointing this out). Typically this happens if one of the layers the project depends on has U-Boot includes a command line interpreter, aka the monitor to us oldsters. If the project is using a fork of U-Boot, some additional steps are If any variables appear, and any one of them has a value other than u-boot orĮmpty, then the build is using a U-Boot fork. You can check if the board is using a u-bootįork with the following command (executed in the Yocto build directory): bitbake -e core-image-minimal | egrep '^PREFERRED_PROVIDER_(virtual/bootloader|u-boot)=' Using the u-boot recipe as the bootloader provider, then you can skip to the If the project is using a board supported by upstream U-Boot, and the build is See the documentation on features for more information. MENDER_FEATURES_DISABLE_append = " mender-grub mender-image-uefi" For instance, in your nf: MENDER_FEATURES_ENABLE_append = " mender-uboot mender-image-sd" The i.MX 8 pre-built images or Yocto Project default. On i.MX 8, the U-Boot cannot boot the device by itself. U-Boot can be used to load a U-Boot image onto some other devices. U-Boot can be loaded directly onto an SD card using the Linux dd command.
If U-Boot integration is not already enabled, you can enable it by adding the snippet below to your build configuration. The manufacturing tool can be used to load U-Boot onto all devices with i.MX 6 and i.MX 7. Platform supports U-Boot, and whether it is enabled by default. Please consult the bootloader support section to find out if your
U BOOT COMMANDS HOW TO
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