diff options
| author | Tom Rini <[email protected]> | 2022-08-12 12:51:14 -0400 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2022-08-12 12:51:14 -0400 |
| commit | 6fc212779c990ff27a430e370bfb8fac01ddde7f (patch) | |
| tree | 32ecaafa1d653e275683cfacac41dd2bb57efca1 /doc/usage/cmd | |
| parent | f5003e0791dbe796bf7b41515d67ae5527679ec9 (diff) | |
| parent | 5fe76d460d857b00d582d7cd6cea9ac740ea912b (diff) | |
Merge branch '2022-08-11-verified-boot-for-embedded-initial-support'
To quote Simon:
This adds the concept of a VBE method to U-Boot, along with an
implementation of the 'VBE simple' method, basically a simple way of
updating firmware in MMC from userspace and monitoring it from U-Boot.
VBE simple is implemented in fwupd. U-Boot's role is to set up the
device tree with the required firmware-update properties and provide the
developer with information about the current VBE state. To that end this
series includes a new 'vbe' command that allows VBE methods to be listed
and examined.
As part of this work, support for doing FDT fixups via the event interface
is provided, along with the ability to write to the device tree via the
ofnode interface.
Another (significant) change is that bootmeths now have a 'global' flag,
to allow the implementation of EFI bootmgr (and VBE) to be cleaned up.
The 'system' bootdev is no-longer needed and these bootmeths are scanned
first.
Further work is needed to pull everything together, but this is a step
along the way.
Diffstat (limited to 'doc/usage/cmd')
| -rw-r--r-- | doc/usage/cmd/bootmeth.rst | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/doc/usage/cmd/bootmeth.rst b/doc/usage/cmd/bootmeth.rst index 9fc7ebf0abf..29d8215a0c0 100644 --- a/doc/usage/cmd/bootmeth.rst +++ b/doc/usage/cmd/bootmeth.rst @@ -31,7 +31,9 @@ scanning bootdevs, each bootmeth is tried in turn to see if it can find a valid bootflow. You can use this command to adjust the order or even to omit some boomeths. -The argument is a quoted list of bootmeths to use, by name. +The argument is a quoted list of bootmeths to use, by name. If global bootmeths +are included, they must be at the end, otherwise the scanning mechanism will not +work correctly. bootmeth list @@ -47,14 +49,15 @@ Order Seq Name Description 1 1 efi EFI boot from an .efi file 2 2 pxe PXE boot from a network device 3 3 sandbox Sandbox boot for testing - 4 4 efi_mgr EFI bootmgr flow + glob 4 efi_mgr EFI bootmgr flow ===== === ================== ================================= The fields are as follows: Order: The order in which these bootmeths are invoked for each bootdev. If this - shows as a hyphen, then the bootmeth is not in the current ordering. + shows as a hyphen, then the bootmeth is not in the current ordering. If it + shows as 'glob', then this is a global bootmeth and should be at the end. Seq: The sequence number of the bootmeth, i.e. the normal ordering if none is set |