mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-23 19:43:33 +00:00
ae0bf2214b
When a FIT includes some OS requests, U-Boot should process these and add the requested info to corresponding subnodes of the /chosen node. Add a pytest for this, which sets up the FIT, runs bootm and then uses a C unit test to check that everything looks OK. The test needs to run on sandbox_flattree since we don't support device tree fixups on sandbox (live tree) yet. So enable BOOTMETH_VBE and disable bootflow_system(), since EFI is not supported on sandbox_flattree. Add a link to the initial documentation. Signed-off-by: Simon Glass <sjg@chromium.org>
27 lines
1.4 KiB
ReStructuredText
27 lines
1.4 KiB
ReStructuredText
.. 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 OS requests are described at vbe-osrequests_.
|
|
|
|
.. _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
|
|
.. _vbe-osrequests: https://docs.google.com/document/d/e/2PACX-1vTHhxX7WSZe68i9rAkW-DHdx6koU-jxYHhamLhZn9GQ9QT2_epSBosMV1_r7yPHOXZccx71rF_t0PXL/pub
|