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13 Commits

Author SHA1 Message Date
Martin Roth
6c3ece9c9e Documentation: Fix spelling errors 
These issues were found and fixed by codespell, a useful tool for
finding spelling errors.

Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: If2a8e97911420c19e9365d5c28810b998f2c2ac8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58078
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
 2021-10-05 18:06:24 +00:00
Julius Werner
5ff1808f20 device/mipi: Move to drivers/mipi 
Sounds like we prefer to have this under drivers/ instead of device/.
Also move all MIPI-related headers out from device/ into their own
directory.

Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: Ib3e66954b8f0cf85b28d8d186b09d7846707559d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57128
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
 2021-08-26 15:18:45 +00:00
Sumeet Pawnikar
590eb2bb9c Documentation/drivers/dptf: Add oem variables support 
Add oem variables information with usage example.

BRANCH=None
BUG=b:187253038
TEST=Built and tested on dedede board

Change-Id: I45db17f6ee3328da28f985c6854d65a430c9c61b
Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55846
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
 2021-07-08 15:49:55 +00:00
Patrick Rudolph
6279cabb5b Documentation: Fix toctree and remove dead links 
Change-Id: Ie3c7c33096f60a5aa476ff55c538fe68ffadc068
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49292
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
 2021-01-12 13:36:36 +00:00
Patrick Rudolph
bc744f5893 drivers/smmstore: Implement SMMSTORE version 2 
SMMSTORE version 2 is a complete redesign of the current driver. It is
not backwards-compatible with version 1, and only one version can be
used at a time.

Key features:
* Uses a fixed communication buffer instead of writing to arbitrary
  memory addresses provided by untrusted ring0 code.
* Gives the caller full control over the used data format.
* Splits the store into smaller chunks to allow fault tolerant updates.
* Doesn't provide feedback about the actual read/written bytes, just
  returns error or success in registers.
* Returns an error if the requested operation would overflow the
  communication buffer.

Separate the SMMSTORE into 64 KiB blocks that can individually be
read/written/erased. To be used by payloads that implement a
FaultTolerant Variable store like TianoCore.

The implementation has been tested against EDK2 master.

An example EDK2 implementation can be found here:
eb1127744a

Change-Id: I25e49d184135710f3e6dd1ad3bed95de950fe057
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Christian Walter <christian.walter@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40520
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
 2020-10-22 12:29:47 +00:00
Duncan Laurie
2cc126be2c drivers/intel/usb4: Add driver for USB4 retimer device 
The USB4 retimer device needs to declare a _DSM with specific functions
that allow for GPIO control to turn off the power when an external
device is not connected.  This driver allows the mainboard to provide
the GPIO that is connected to the power control.

BUG=b:156957424

Change-Id: Icfb85dc3c0885d828aba3855a66109043250ab86
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44918
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
 2020-10-19 06:51:40 +00:00
Tim Wawrzynczak
0115ba8835 Documentation: Add documentation for drivers/intel/dptf chip driver 
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: I8915ead08a89dcf95fd92983eca5f85b82916dfd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43533
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Caveh Jalali <caveh@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
 2020-07-18 16:05:43 +00:00
Patrick Rudolph
2fdabd9038 smmstore: Verify userspace-provided pointer to protect SMM 
Use the introduced functions and verify pointers in the SMMSTORE.
Make sure to not overwrite or leak data from SMM and update the
documentation as well.

Change-Id: I70df08657c3fa0f98917742d8e1a6cb1077e3758
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Christian Walter <christian.walter@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41085
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
 2020-06-17 09:18:05 +00:00
Duncan Laurie
ba56da85e8 Documentation: Add info about SoundWire coreboot implementation 
This change adds a document about the SoundWire implementation in
coreboot with details adding new controllers and codecs and
connecting them in the mainboard devicetree.

BUG=b:146482091

Signed-off-by: Duncan Laurie <dlaurie@google.com>
Change-Id: Ibc04442e22acfc03ff86c49c8a7a215ceefc24c7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40892
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
 2020-05-22 01:49:11 +00:00
Patrick Rudolph
8c82010c97 Documentation: Spell vboot all lowercase 
Update all occurrences of vboot and spell it lowercase.

Change-Id: I432b0db8a3dda43b71844e557a3d89180f25f1c3
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39799
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
 2020-04-28 06:14:25 +00:00
Arthur Heymans
b52cc0e094 Documentation: Add SMMSTORE documentation 
This documents the smmstore API.

Change-Id: I992c04c0cf9b3f03755cf3fede2c82c6471a5ef4
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37243
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
 2019-11-29 08:58:01 +00:00
Tim Wawrzynczak
25f9dcb685 Documentation/drivers: Fix typo in index.md 
Change-Id: Ibf8f37d1e1223c5481cf1a40f08d4113bd80ed41
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34631
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
 2019-08-02 10:00:44 +00:00
Patrick Rudolph
ffbc3b5f5f drivers/ipmi: Add chip ops 
* Add chips ops for IPMI KCS.
* Get IPMI version over KCS.
* Generates ACPI SPMI table for IPMI KCS.
* Generates SMBIOS type 38 for IPMI KCS.
* Generates ACPI SPMI device for IPMI KCS on LPC device.
* Add documentation

To use this driver on BMC that support KCS on I/O:

1. Add an entry to the devicetree.cb:

 chip drivers/ipmi
    device pnp ca2.0 on end         # IPMI KCS
 end

2. Select IPMI_KCS in Kconfig.
3. (Optional) enable LPC I/O decode for the given address.

Tested on Wedge100s.

Change-Id: I73cbd2058ccdc5395baf244f31345a85eb0047d7
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33255
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
 2019-06-21 12:53:44 +00:00