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diff --git a/doc/develop/vbe.rst b/doc/develop/vbe.rst new file mode 100644 index 00000000000..8f147fd9360 --- /dev/null +++ b/doc/develop/vbe.rst @@ -0,0 +1,26 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +Verified Boot for Embedded (VBE) +================================ + +Introduction +------------ + +VBE provides a standard boot mechanism for embedded systems. If defines +how firmware and Operating Systems are located, updated and verified. + +Within U-Boot, one or more VBE bootmeths implement the boot logic. For example, +the vbe-simple bootmeth handles finding the firmware (e.g. in MMC) and starting +it. Typically the bootmeth is started up in VPL and controls which SPL and +U-Boot binaries are loaded. + +A 'vbe' command provides access to various aspects of VBE's operation, including +listing methods and getting the status for a method. + +For a detailed overview of VBE, see vbe-intro_. A fuller description of +bootflows is at vbe-bootflows_ and the firmware-update mechanism is described at +vbe-fwupdate_. + +.. _vbe-intro: https://docs.google.com/document/d/e/2PACX-1vQjXLPWMIyVktaTMf8edHZYDrEvMYD_iNzIj1FgPmKF37fpglAC47Tt5cvPBC5fvTdoK-GA5Zv1wifo/pub +.. _vbe-bootflows: https://docs.google.com/document/d/e/2PACX-1vR0OzhuyRJQ8kdeOibS3xB1rVFy3J4M_QKTM5-3vPIBNcdvR0W8EXu9ymG-yWfqthzWoM4JUNhqwydN/pub +.. _vbe-fwupdate: https://docs.google.com/document/d/e/2PACX-1vTnlIL17vVbl6TVoTHWYMED0bme7oHHNk-g5VGxblbPiKIdGDALE1HKId8Go5f0g1eziLsv4h9bocbk/pub |