From: "Vincent Stehlé" <vincent.stehle@arm.com>
To: u-boot@lists.u-boot-project.org
Cc: "Heinrich Schuchardt" <xypron.glpk@gmx.de>,
"Ilias Apalodimas" <ilias.apalodimas@linaro.org>,
"Tom Rini" <trini@konsulko.com>,
"Quentin Schulz" <quentin.schulz@cherry.de>,
"Shantur Rathore" <i@shantur.com>,
"Dario Binacchi" <dario.binacchi@amarulasolutions.com>,
"Marek Vasut" <marek.vasut+renesas@mailbox.org>,
"Vincent Stehlé" <vincent.stehle@arm.com>
Subject: [PATCH v2 5/5] doc: uefi: EBBR conformance profiles
Date: Mon, 21 Sep 2026 15:12:21 +0200 [thread overview]
Message-ID: <20260921-conform-v2-5-daeb00359af9@arm.com> (raw)
In-Reply-To: <20260921-conform-v2-0-daeb00359af9@arm.com>
U-Boot can support multiple EBBR conformance profiles, and it can advertise
them in the ECPT; therefore, remove the EBBR fixed version 2.1 mention from
the documentation and add a word about the ECPT profiles.
While at it, fix one typo.
Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Tom Rini <trini@konsulko.com>
---
doc/develop/uefi/uefi.rst | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)
diff --git a/doc/develop/uefi/uefi.rst b/doc/develop/uefi/uefi.rst
index 94ddf690440..9dc34495f66 100644
--- a/doc/develop/uefi/uefi.rst
+++ b/doc/develop/uefi/uefi.rst
@@ -14,14 +14,23 @@ Development target
------------------
The implementation of UEFI in U-Boot strives to reach the requirements described
-in the "Embedded Base Boot Requirements (EBBR) Specification - Release v2.1.0"
-[2]. The "Server Base Boot Requirements System Software on ARM Platforms" [3]
+in the "Embedded Base Boot Requirements (EBBR) Specification" [2].
+The "Server Base Boot Requirements System Software on ARM Platforms" [3]
describes a superset of the EBBR specification and may be used as further
reference.
A full blown UEFI implementation would contradict the U-Boot design principle
"keep it small".
+Conformance profiles
+~~~~~~~~~~~~~~~~~~~~
+
+The EBBR conformance profiles supported by U-Boot are inferred optimistically
+from its configuration and the corresponding GUIDs are advertised in the EFI
+Conformance Profiles Table (ECPT) automatically by default.
+System integrators should review the advertised profiles and override manually
+if necessary.
+
Building U-Boot for UEFI
------------------------
@@ -323,7 +332,7 @@ Capsule with firmware version
The UEFI specification does not define the firmware versioning mechanism.
EDK II reference implementation inserts the FMP Payload Header right before
-the payload. It coutains the fw_version and lowest supported version,
+the payload. It contains the fw_version and lowest supported version,
EDK II reference implementation uses these information to implement the
firmware versioning and anti-rollback protection, the firmware version and
lowest supported version is stored into EFI non-volatile variable.
@@ -1019,8 +1028,7 @@ Links
-----
* [1] http://uefi.org/specifications - UEFI specifications
-* [2] https://github.com/ARM-software/ebbr/releases/download/v2.1.0/ebbr-v2.1.0.pdf -
- Embedded Base Boot Requirements (EBBR) Specification - Release v2.1.0
+* [2] https://github.com/ARM-software/ebbr - Embedded Base Boot Requirements (EBBR) Specification
* [3] https://developer.arm.com/docs/den0044/latest/server-base-boot-requirements-system-software-on-arm-platforms-version-11 -
Server Base Boot Requirements System Software on ARM Platforms - Version 1.1
* [4] :doc:`iscsi`
--
2.53.0
prev parent reply other threads:[~2026-09-21 13:12 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-04 15:01 [PATCH 0/5] efi: ECPT EBBR conformance profiles Vincent Stehlé
2026-09-04 15:01 ` [PATCH 1/5] efi_loader: adjust EBBR 2.1 ECPT entry Vincent Stehlé
2026-09-17 16:04 ` Ilias Apalodimas
2026-09-18 12:35 ` Vincent Stehlé
2026-09-18 12:58 ` Ilias Apalodimas
2026-09-04 15:01 ` [PATCH 2/5] efi_loader: add EBBR 2.2-2.4 ECPT entries Vincent Stehlé
2026-09-17 16:00 ` Ilias Apalodimas
2026-09-04 15:01 ` [PATCH 3/5] lib: uuid: add EBBR 2.2-2.4 conformance profile GUIDs Vincent Stehlé
2026-09-04 15:01 ` [PATCH 4/5] test/py: add 2.2-2.4 ECPT tests Vincent Stehlé
2026-09-17 16:04 ` Ilias Apalodimas
2026-09-04 15:01 ` [PATCH 5/5] doc: uefi: EBBR conformance profiles Vincent Stehlé
2026-09-17 16:02 ` Ilias Apalodimas
2026-09-21 13:12 ` [PATCH v2 0/5] efi: ECPT " Vincent Stehlé
2026-09-21 13:12 ` [PATCH v2 1/5] efi_loader: adjust EBBR 2.1 ECPT entry Vincent Stehlé
2026-10-02 11:23 ` Ilias Apalodimas
2026-09-21 13:12 ` [PATCH v2 2/5] efi_loader: add EBBR 2.2-2.4 ECPT entries Vincent Stehlé
2026-10-02 11:24 ` Ilias Apalodimas
2026-10-11 7:24 ` Heinrich Schuchardt
2026-09-21 13:12 ` [PATCH v2 3/5] lib: uuid: add EBBR 2.2-2.4 conformance profile GUIDs Vincent Stehlé
2026-10-02 11:21 ` Ilias Apalodimas
2026-09-21 13:12 ` [PATCH v2 4/5] test/py: add 2.2-2.4 ECPT tests Vincent Stehlé
2026-09-21 13:12 ` Vincent Stehlé [this message]
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