This is a minor release of the EBBR specification.

Notable changes since v2.3.0 include changes in the architecture-specific
privileged or secure firmware requirements, a few recommendations and
clarifications, the addition of version annotations and the usual fixes and
references updates.

v2.4.0-pre3, third pre-release for review.

v2.4.0-pre2, second pre-release for review.

v2.4.0-pre1 pre-release for review.

chapter3: require PFDI compatible with v1.0

On AArch64, when PFDI is implemented, require compatibility with PFDI v1.0.

Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>

chapter2: require fmp and on-disk indications when supported

Require to set the FMP and "on disk" OsIndicationsSupported bits when
in-band firmware update is supported.

Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>

chapter2: all services optional at runtime

We are requiring two remaining runtime services at runtime:
SetVirtualAddressMap() and ConvertPointer().

Those two services are not strictly required to boot an OS such as Linux
for example (see efi=novamap), and their implementation in the firmware can
be tricky. Besides, the UEFI specification allows to not implement those
services at runtime since version 2.8.

Relax our requirements by making those two services explicitly optional
at runtime, to go back to what the UEFI specification does now.

Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>

This is a minor release of the EBBR specification.

Compared to v2.2.0, this release formalizes the Boot Manager requirements,
adds requirements on authenticated FMP capsules for firmware update and
deprecates spin tables for AArch64.

v2.3.0-pre1 pre-release for review.

WIP

TBD crypto bits

Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>