update docs/maintain to match Libreboot 20241205

Signed-off-by: Leah Rowe <info@minifree.org>

site/docs/maintain/index.md

@@ -329,6 +329,32 @@ This may be less efficient on disk usage, but it simplifies the logic greatly.
 Coreboot also uses its own toolchain called *crossgcc*, and crossgcc is in fact
 compiled *per tree* in Libreboot.
 
+src/deguard/
+------------
+
+Mate Kukri's utility that disables the Intel Boot Guard on Intel MEv11-based
+PCH. More info available on the [deguard page](../install/deguard.md).
+
+On coreboot targets that have Intel Boot Guard, you can specify in
+target configuration, on the vendor file config, something like:
+
+	ME11bootguard="y"
+	ME11delta="thinkpad_t480s" # subdirectory under deguard's data/delta/
+	ME11version="11.6.0.1126"
+	ME11sku="2M"
+	ME11pch="LP"
+
+The above example is used on the ThinkPad T480S, and specifies that in
+addition to downloading and neutering an Intel ME image, it should also run
+deguard to set up a Boot Guard-disabled configuration, or *deguarded*
+installation (or less politically correctly, a disreguarded ME!)
+
+Libreboot uses a generic, universal ME image on all MEv11 based systems,
+downloading it from a vendor, generic because its configuration is stripped
+out and replaced by deguard, with one specific to the target machine. More
+information is available on the deguard page, and in the deguard README,
+which when downloading in lbmk in the `src/deguard/` directory.
+
 src/flashprog/
 ---------------
 
@@ -339,6 +365,18 @@ convenience of users, and this is copied to release archives. Flashrom is the
 program that you will use to read, erase and write the flash, containing
 coreboot firmware.
 
+src/gpio-scripts
+----------------
+
+This is a fork of the original gpio-scripts. The fork is maintained by Riku
+Viitanen, based on code written by Angel Pons (author of the Haswell native
+raminit patches and many other excellent works), but Riku's version parses
+the inteltool log files. This is useful for adapting GPIO configs on Intel
+machines, when porting new boards to coreboot.
+
+NOTE: Not included in Libreboot yet, but `intelp2m` is used instead for this
+purpose, on much newer Intel systems (from around Skylake era or later).
+
 src/grub/TREE
 ---------------
 
@@ -373,6 +411,12 @@ tree contains NVMe SSD support but not xHCI support. The `default` tree contains
 no NVMe or xHCI support. All trees otherwise have the same fixes on top of
 upstream GRUB, e.g. fix for Dell Latitude keyboard controllers.
 
+src/int/
+--------
+
+Riku Viitanen wrote this tool for debugging, when implementing MXM option ROM
+support in coreboot and SeaBIOS, for the HP EliteBook 8560w.
+
 src/memtest86plus/
 ---------------
 
@@ -381,6 +425,20 @@ Please also visit: <https://www.memtest.org/>
 This is provided inside ROM images, as a payload executed from main GRUB or
 SeaBIOS payload. It checks for corrupted memory.
 
+src/mxmdump/
+------------
+
+Riku Viitanen wrote this utility, for dumping the MXM config on graphics cards
+that use it. The HP EliteBook 8560w uses these cards, and normally you would
+just run a VGA option ROM to get a display at boot time. The MXM cards
+additionally contain a configuration called MXM, which basically describes
+ports and several power management capabilities.
+
+MXM data is loaded via an INT15H handler, which Riku also implemented in
+SeaBIOS. If the MXM data is not handled, the VGA option ROM (when executed)
+will often complain and refuse to boot; some of them can be hacked to bypass
+this fact, but such hacks are no longer required because of Riku's tool.
+
 src/seabios/
 ---------------
 
@@ -407,6 +465,11 @@ provides UEFI. Information about that can be found on these resources:
 
 This is currently the only payload on *ARM* systems, within Libreboot.
 
+U-Boot is also available on x86 machines, since the Libreboot 20241205 release.
+More information can be found on the [U-Boot x86 page](../install/uboot-x86.md);
+it is available as an alternative to the traditional SeaBIOS and GRUB payloads,
+and it can successfully boot UEFI applications on x86 Libreboot systems.
+
 src/uefitool/
 ---------------
 
@@ -416,6 +479,21 @@ This is compiled, so as to provide `UEFIExtract`. Currently used by the
 vendor download logic within `include/vendor.sh`, to download SCH5545 EC
 firmware (used for fan control on Dell Precision T1650).
 
+This has also been modified to build reliably on non-glibc-based systems e.g.
+Alpine Linux, which uses musl libc.
+
+src/pcsx-redux
+----------------
+
+PCSX-Redux is a Sony Playstation (PS1/PSX) emulator, but Libreboot only uses
+one part from it: the Open BIOS. This is used by Libreboot to provide an
+open BIOS for the Sony Playstation!
+
+More information available on the [PlayStation page](../install/playstation.md).
+
+This is automatically compiled by the main build script, and the resulting
+BIOS image is provided in Libreboot release archives.
+
 src/pico-serprog
 ---------------------------
 
@@ -1297,6 +1375,12 @@ This function also contains `x_()` which lbmk uses to execute commands
 and ensure that they cause an exit (with non-zero status) from lbmk, if they
 return an error state.
 
+This also includes the `mk()` function, which can be used as shorthand to
+build multiple projects, but it doesn't handle targets within multi-tree projects,
+so if for example you say `mk coreboot`, it would build every coreboot target.
+This is useful for the release build logic, because now it can much more simply
+build all of Libreboot, while still being flexible about it.
+
 include/rom.sh
 -----------
 
@@ -1365,6 +1449,10 @@ When the ROM is finished compiling, it will appear under a directory in `bin/`
 This script is the beating heart of Libreboot. Break it, and you break
 Libreboot!
 
+CCACHE is automatically used, when building coreboot, but not currently for
+other projects. This is done by cooking coreboot configs at build time, enabling
+coreboot's build option for it.
+
 Serprog images:
 --------------