Files
system76-coreboot/Documentation/mainboard/protectli/fw6.md
Nicholas Chin 35599f9a66 Docs: Replace Recommonmark with MyST Parser
Recommonmark has been deprecated since 2021 [1] and the last release was
over 3 years ago [2]. As per their announcement, Markedly Structured
Text (MyST) Parser [3] is the recommended replacement.

For the most part, the existing documentation is compatible with MyST,
as both parsers are built around the CommonMark flavor of Markdown. The
main difference that affects coreboot is how the Sphinx toctree is
generated. Recommonmark has a feature called auto_toc_tree, which
converts single level lists of references into a toctree:

* [Part 1: Starting from scratch](part1.md)
* [Part 2: Submitting a patch to coreboot.org](part2.md)
* [Part 3: Writing unit tests](part3.md)
* [Managing local additions](managing_local_additions.md)
* [Flashing firmware](flashing_firmware/index.md)

MyST Parser does not provide a replacement for this feature, meaning the
toctree must be defined manually. This is done using MyST's syntax for
Sphinx directives:

```{toctree}
:maxdepth: 1

Part 1: Starting from scratch <part1.md>
Part 2: Submitting a patch to coreboot.org <part2.md>
Part 3: Writing unit tests <part3.md>
Managing local additions <managing_local_additions.md>
Flashing firmware <flashing_firmware/index.md>
```

Internally, auto_toc_tree essentially converts lists of references into
the Sphinx toctree structure that the MyST syntax above more directly
represents.

The toctrees were converted to the MyST syntax using the following
command and Python script:

`find ./ -iname "*.md" | xargs -n 1 python conv_toctree.py`

```
import re
import sys

in_list = False
f = open(sys.argv[1])
lines = f.readlines()
f.close()

with open(sys.argv[1], "w") as f:
    for line in lines:
        match = re.match(r"^[-*+] \[(.*)\]\((.*)\)$", line)
        if match is not None:
            if not in_list:
                in_list = True
                f.write("```{toctree}\n")
                f.write(":maxdepth: 1\n\n")
            f.write(match.group(1) + " <" + match.group(2) + ">\n")
        else:
            if in_list:
                f.write("```\n")
            f.write(line)
            in_list = False

    if in_list:
        f.write("```\n")
```

While this does add a little more work for creating the toctree, this
does give more control over exactly what goes into the toctree. For
instance, lists of links to external resources currently end up in the
toctree, but we may want to limit it to pages within coreboot.

This change does break rendering and navigation of the documentation in
applications that can render Markdown, such as Okular, Gitiles, or the
GitHub mirror. Assuming the docs are mainly intended to be viewed after
being rendered to doc.coreboot.org, this is probably not an issue in
practice.

Another difference is that MyST natively supports Markdown tables,
whereas with Recommonmark, tables had to be written in embedded rST [4].
However, MyST also supports embedded rST, so the existing tables can be
easily converted as the syntax is nearly identical.

These were converted using
`find ./ -iname "*.md" | xargs -n 1 sed -i "s/eval_rst/{eval-rst}/"`

Makefile.sphinx and conf.py were regenerated from scratch by running
`sphinx-quickstart` using the updated version of Sphinx, which removes a
lot of old commented out boilerplate. Any relevant changes coreboot had
made on top of the previous autogenerated versions of these files were
ported over to the newly generated file.

From some initial testing the generated webpages appear and function
identically to the existing documentation built with Recommonmark.

TEST: `make -C util/docker docker-build-docs` builds the documentation
successfully and the generated output renders properly when viewed in
a web browser.

[1] https://github.com/readthedocs/recommonmark/issues/221
[2] https://pypi.org/project/recommonmark/
[3] https://myst-parser.readthedocs.io/en/latest/
[4] https://doc.coreboot.org/getting_started/writing_documentation.html

Change-Id: I0837c1722fa56d25c9441ea218e943d8f3d9b804
Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73158
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2024-03-21 16:11:56 +00:00

5.7 KiB

Protectli Vault FW6 series

This page describes how to run coreboot on the Protectli FW6.

Required proprietary blobs

To build a minimal working coreboot image some blobs are required (assuming only the BIOS region is being modified).

+-----------------+---------------------------------+---------------------+
| Binary file     | Apply                           | Required / Optional |
+=================+=================================+=====================+
| FSP-M, FSP-S    | Intel Firmware Support Package  | Required            |
+-----------------+---------------------------------+---------------------+
| microcode       | CPU microcode                   | Required            |
+-----------------+---------------------------------+---------------------+
| vgabios         | VGA Option ROM                  | Optional            |
+-----------------+---------------------------------+---------------------+

FSP-M and FSP-S are obtained after splitting the Kaby Lake FSP binary (done automatically by the coreboot build system and included into the image) from the 3rdparty/fsp submodule.

Microcode updates are automatically included into the coreboot image by build system from the 3rdparty/intel-microcode submodule.

VGA Option ROM is not required to boot, but if one needs graphics in pre-OS stage, it should be included (if not using libgfxinit).

Flashing coreboot

Internal programming

The main SPI flash can be accessed using flashrom. The first version supporting the chipset is flashrom v1.1. Firmware an be easily flashed with internal programmer (either BIOS region or full image).

External programming

The system has an internal flash chip which is a 8 MiB soldered SOIC-8 chip. This chip is located on the bottom side of the case (the radiator side). One has to remove all screws (in order): 4 top cover screws, 4 side cover screws (one side is enough), 4 mainboard screws, 4 CPU screws (under DIMMs). Lift up the mainboard and turn around it. The flash chip is near the SoC on the DIMM slots side. Use a clip (or solder the wires) to program the chip. Specifically, it's a Macronix MX25L6406E (3.3V) -datasheet.

Known issues

  • After flashing with external programmer it is always required to reset RTC with jumper or disconnect coin cell temporarily. Only then the platform will boot after flashing.
  • FW6A does not always work reliably with all DIMMs. Linux happens to hang or gives many panics. This issue was present also with vendor BIOS.
  • Sometimes FSPMemoryInit return errors or hangs (especially with 2 DIMMs connected). A workaround is to power cycle the board (even a few times) or temporarily disconnect DIMM when platform is powered off.
  • When using libgfxinit and SeaBIOS bootsplash, the red color is dim

Untested

Not all mainboard's peripherals and functions were tested because of lack of the cables or not being populated on the board case.

  • Internal USB 2.0 headers
  • Boot with cleaned ME

Working

  • USB 3.0 front ports (SeaBIOS and Linux)
  • 6 Ethernet ports
  • HDMI port with libgfxinit and VGA Option ROM
  • flashrom
  • PCIe WiFi
  • SATA and mSATA
  • Super I/O serial port 0 (RS232 via front RJ45 connector)
  • SMBus (reading SPD from DIMMs)
  • Initialization with KBL FSP 2.0 (with MemoryInit issues)
  • SeaBIOS payload (version rel-1.12.1)
  • Mini PCIe debug card connected to mSATA (mSATA slot has LPC signals routed)
  • Reset switch
  • Booting Debian, Ubuntu, FreeBSD

Technology

There are 3 variants of FW6 boards: FW6A, FW6B and FW6C. They differ only in used SoC.

  • FW6A:
+------------------+--------------------------------------------------+
| CPU              | Intel Celeron 3865U                              |
+------------------+--------------------------------------------------+
| PCH              | Kaby Lake U w/ iHDCP2.2 Base                     |
+------------------+--------------------------------------------------+
| Super I/O, EC    | ITE IT8772E                                      |
+------------------+--------------------------------------------------+
| Coprocessor      | Intel Management Engine                          |
+------------------+--------------------------------------------------+
  • FW6B:
+------------------+--------------------------------------------------+
| CPU              | Intel Core i3-7100U                              |
+------------------+--------------------------------------------------+
| PCH              | Kaby Lake U w/ iHDCP2.2 Premium                  |
+------------------+--------------------------------------------------+
| Super I/O, EC    | ITE IT8772E                                      |
+------------------+--------------------------------------------------+
| Coprocessor      | Intel Management Engine                          |
+------------------+--------------------------------------------------+
  • FW6C:
+------------------+--------------------------------------------------+
| CPU              | Intel Core i5-7200U                              |
+------------------+--------------------------------------------------+
| PCH              | Kaby Lake U w/ iHDCP2.2 Premium                  |
+------------------+--------------------------------------------------+
| Super I/O, EC    | ITE IT8772E                                      |
+------------------+--------------------------------------------------+
| Coprocessor      | Intel Management Engine                          |
+------------------+--------------------------------------------------+