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coreboot-kgpe-d16/Documentation/releases/coreboot-4.13-relnotes.md

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Documentation/releases: Update for 4.12 Fill in some blanks for 4.12, mark it done, add template for 4.13. Also update the list of vboot supported boards. Change-Id: Id6b663f13367eb40e66af30aadd33991c8dd635c Signed-off-by: Patrick Georgi <patrick@georgi.software> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41259 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2020-05-11 23:46:35 +02:00
Upcoming release - coreboot 4.13
================================
The 4.13 release is planned for November 2020.
Update this document with changes that should be in the release notes.
* Please use Markdown.
* See the past few release notes for the general format.
* The chip and board additions and removals will be updated right
before the release, so those do not need to be added.
Significant changes
-------------------
Documentation: Add section about 'hidden' devices to 4.13 release notes CB:41384 (SHA dbcf7b16219df0c04401b8fcd6a780174a7df305) added some new functionality to devicetree files ("hidden PCI devices"). It's a decent enough semantic change that it should be added to the release notes for the 4.13 release. Change-Id: I52969f63dbc492afd32279176cbcfc2b76d7ac33 Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41563 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-05-20 18:05:08 +02:00
### Hidden PCI devices
This new functionality takes advantage of the existing 'hidden' keyword in the
devicetree. Since no existing boards were using the keyword, its usage was
repurposed to make dealing with some unique PCI devices easier. The particular
case here is Intel's PMC (Power Management Controller). During the FSP-S run,
the PMC device is made hidden, meaning that its config space looks as if there
is no device there (Vendor ID reads as 0xFFFF_FFFF). However, the device does
have fixed resources, both MMIO and I/O. These were previously recorded in
different places (MMIO was typically an SA fixed resource, and I/O was treated
as an LPC resource). With this change, when a device in the tree is marked as
'hidden', it is not probed (`pci_probe_dev()`) but rather assumed to exist so
that its resources can be placed in a more natural location. This also adds the
ability for the device to participate in SSDT generation.
Documentation/releases: Update for 4.12 Fill in some blanks for 4.12, mark it done, add template for 4.13. Also update the list of vboot supported boards. Change-Id: Id6b663f13367eb40e66af30aadd33991c8dd635c Signed-off-by: Patrick Georgi <patrick@georgi.software> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41259 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2020-05-11 23:46:35 +02:00
### Add significant changes here