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| author | Tom Rini <[email protected]> | 2023-07-15 11:19:11 -0400 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2023-07-15 11:19:11 -0400 |
| commit | 3a7a17dbdc016e77627f62f5dc55819e1be09f9c (patch) | |
| tree | 5526535fea4647d182018a7f54c404c68bf47d7c /doc/develop | |
| parent | e6e67bb9e0a40f3eb3c87d16935192821987c3e0 (diff) | |
| parent | 345a8b15acf228c4a429f6569c34cbc0232e76eb (diff) | |
Merge tag 'efi-2023-10-rc1' of https://source.denx.de/u-boot/custodians/u-boot-efi
Pull request efi-2023-10-rc1
Documentation:
* enhance UEFI anti-rollback documentation
EFI:
* Reconnect drivers if UninstallProtocol fails
* Prefer short device paths for boot options
* Fix error handling when updating boot options for block devices
Diffstat (limited to 'doc/develop')
| -rw-r--r-- | doc/develop/uefi/uefi.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/develop/uefi/uefi.rst b/doc/develop/uefi/uefi.rst index 6626ceec52b..a7a41f2facf 100644 --- a/doc/develop/uefi/uefi.rst +++ b/doc/develop/uefi/uefi.rst @@ -552,6 +552,13 @@ update using a capsule file with --fw-version of 5, the update will fail. When the --fw-version in the capsule file is updated, lowest-supported-version in the dtb might be updated accordingly. +If user needs to enforce anti-rollback to any older version, +the lowest-supported-version property in dtb must be always updated manually. + +Note that the lowest-supported-version property specified in U-Boot's control +device tree can be changed by U-Boot fdt command. +Secure systems should not enable this command. + To insert the lowest supported version into a dtb .. code-block:: console |