In addition to the standard U-Boot commands, Digi provides custom U-Boot commands to perform common embedded platform operations more efficiently.
Digi has also added U-Boot support to help you secure your embedded platform including:
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Bootloader and OS image authentication and encryption
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Secure console
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Secure JTAG
For information about these TrustFence capabilities and the U-Boot commands that support them, see the Digi TrustFence for Yocto for further details.