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docs: mention LoaderTpm2ActivePcrBanks in BLI

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Follow-up for 6eab4cd44c
This commit is contained in:
Luca Boccassi
2025-07-18 23:13:35 +01:00
committed by Zbigniew Jędrzejewski-Szmek
parent 8c7dfa0ff4
commit bfeaefebf2
1 changed files with 5 additions and 0 deletions
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docs/BOOT_LOADER_INTERFACE.md
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@@ -112,6 +112,11 @@ variables. All EFI variables use the vendor UUID
* The EFI variable `LoaderDeviceURL` contains the URL the boot loader was
downloaded from, in UTF-16 format. Only set in case of network boots.
* The EFI variable `LoaderTpm2ActivePcrBanks` contains a hexadecimal string
representation of a bitmask with values defined by the TCG EFI Protocol
Specification for TPM 2.0 as EFI_TCG2_BOOT_HASH_ALG_*. If no TPM2 support or
no active banks were detected, will be set to `0`.
If `LoaderTimeInitUSec` and `LoaderTimeExecUSec` are set, `systemd-analyze`
will include them in its boot-time analysis. If `LoaderDevicePartUUID` is set,
systemd will mount the ESP that was used for the boot to `/boot`, but only if