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| author | Simon Glass <sjg@chromium.org> | 2022-07-31 00:52:03 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2022-08-12 15:14:23 +0300 |
| commit | 915458e148d969ccc2e6d246794324f1f34f5b6b (patch) | |
| tree | 3e8e36ee2a2917a13325412a4677973ec7cfa1b8 | |
| parent | f5003e0791dbe796bf7b41515d67ae5527679ec9 (diff) | |
| download | u-boot-915458e148d969ccc2e6d246794324f1f34f5b6b.tar.xz | |
vbe: Add some documentation
Add a few links to documents about Verified Boot for Embedded (VBE).
These will be expanded as development proceeds.
Signed-off-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | doc/develop/bootstd.rst | 1 | ||||
| -rw-r--r-- | doc/develop/index.rst | 1 | ||||
| -rw-r--r-- | doc/develop/vbe.rst | 26 |
3 files changed, 28 insertions, 0 deletions
diff --git a/doc/develop/bootstd.rst b/doc/develop/bootstd.rst index 5e9c0d282b..dadd3473e5 100644 --- a/doc/develop/bootstd.rst +++ b/doc/develop/bootstd.rst @@ -32,6 +32,7 @@ way to boot with U-Boot. The feature is extensible to different Operating Systems (such as Chromium OS) and devices (beyond just block and network devices). It supports EFI boot and EFI bootmgr too. +Finally, standard boot supports the operation of :doc:`vbe`. Bootflow -------- diff --git a/doc/develop/index.rst b/doc/develop/index.rst index 7c41e3f1b6..c94c7fe0ef 100644 --- a/doc/develop/index.rst +++ b/doc/develop/index.rst @@ -39,6 +39,7 @@ Implementation smbios spl uefi/index + vbe version Debugging diff --git a/doc/develop/vbe.rst b/doc/develop/vbe.rst new file mode 100644 index 0000000000..8f147fd936 --- /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 |