This should enable various distributions and build system to reuse
the generated script to deblob u-boot releases themselves.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

This should enable various distributions and build system to reuse
that blob to deblob u-boot releases themselves.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

The tar options come from the tutorial to remove archives metadata at
reproducible-builds.org[1].

[1]https://reproducible-builds.org/docs/archives/

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

If the script is named u-boot-stable-src-release and that users see an
u-boot-libre tarball they will not make the link between both unless
we rename the script.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

Many people using FSDG compliant distributions or wanting to use one
are already familiar with linux-libre. This change renames the
resulting tarball to u-boot-libre to make it easier for people to
understand the goal of this tarball.

In addition we also rename the version from v2021.07 (which is the git
tag corresponding to the release) to 2021.07 as u-boot upstream
tarballs use that.

The revision wasn't bumped as we didn't have any releases of
u-boot-libre yet.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

Once the tarball are released, it will enable distributions to use
these tarballs to produce deblobbed u-boot packages.

Note that the produced tarball is not reproducible yet. Because of
that it has to be trusted.

During a release, it's a good idea to sign the uncompressed tarball as
the various compression formats and associated tools make different
tradeoffs.

For instance with xz, xz -9e tends to compress really well with the
the most used xz[1] implementation, and most GNU/Linux users probably
already have it installed, but and the drawbacks is that the format is
very fragile[2].

The lzip format is more suited for long term archiving but its most
packaged implementation[3] is less likely to be already installed by
users than more well known formats like xz, bzip2 or gzip.

Being able to add more compression formats after the release is also
useful, for instance to accommodate different build systems or use
cases (like being able to build u-boot with less dependencies in
distributions like Guix, or building u-boot directly on devices which
don't have enough RAM for xz for instance).

[1]https://tukaani.org/xz/
[2]https://www.nongnu.org/lzip/xz_inadequate.html
[3]https://www.nongnu.org/lzip/

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

tianocore is a liability for the libreboot project. it's a bloated mess, and
unreliable, broken on many boards, and basically impossible to audit.

i don't trust tianocore, so i'm removing it.

This reverts commit 84a1bc502b1f296d8ad6389b9e38aa3e0ca94958.