write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

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What:        /sys/class/chromeos/<ec-device-name>/vbc/vboot_context
Date:        October 2015
KernelVersion:    4.4
Description:
        Read/write the verified boot context data included on a
        small nvram space on some EC implementations.