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| author | Thirupathaiah Annapureddy <thiruan@linux.microsoft.com> | 2020-08-16 23:01:11 -0700 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-10-12 21:30:37 -0400 |
| commit | 6a0498a5fd41b58b0c61b34f315771aac0eca0e0 (patch) | |
| tree | 7c6e3f55fbdff4deb82d89d6aad5f6d8bcd42254 /doc | |
| parent | feaeee8b5ff59477e0372ae7b9a655ecca05b24a (diff) | |
| download | u-boot-6a0498a5fd41b58b0c61b34f315771aac0eca0e0.tar.gz | |
doc: verified-boot: add required-mode information
Add documentation about 'required-mode' property in /signature node
in U-Boot's control FDT.
Signed-off-by: Thirupathaiah Annapureddy <thiruan@linux.microsoft.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/uImage.FIT/signature.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/doc/uImage.FIT/signature.txt b/doc/uImage.FIT/signature.txt index d4afd755e9..a3455889ed 100644 --- a/doc/uImage.FIT/signature.txt +++ b/doc/uImage.FIT/signature.txt @@ -386,6 +386,20 @@ that might be used by the target needs to be signed with 'required' keys. This happens automatically as part of a bootm command when FITs are used. +For Signed Configurations, the default verification behavior can be changed by +the following optional property in /signature node in U-Boot's control FDT. + +- required-mode: Valid values are "any" to allow verified boot to succeed if +the selected configuration is signed by any of the 'required' keys, and "all" +to allow verified boot to succeed if the selected configuration is signed by +all of the 'required' keys. + +This property can be added to a binary device tree using fdtput as shown in +below examples:: + + fdtput -t s control.dtb /signature required-mode any + fdtput -t s control.dtb /signature required-mode all + Enabling FIT Verification ------------------------- |