❓ Is it possible to compile v3x4 driver into PEI?

[miyconst]

The current implementation is available in two forms:

• EFI driver, it can be installed on the OS level.
• DXE driver, it can be injected into the BIOS itself.

The problem with the DXE driver is that this section is not loaded when the PC goes live from the sleep mode.

Would it be possible to produce a PEI driver, which can be injected into the BIOS section, which is executed upon wake up?

P.S. I apologize if this is a stupid question and the answer is obvious.

[freecableguy]

The following link should allow for conversion of DXE to FFS format for direct injection into BIOS. I am reliably informed this method is incompatible with dual CPU systems but does work for single CPU systems.

Perhaps do some investigating for us and report back what you learn.

https://github.com/pbatard/efifs/wiki/Adding-a-driver-to-a-UEFI-firmware

[freecableguy]

Lol. Is this your site?: http://www.miyconst.com/Blog/View/2081/xeon-e5-2600-v3-turbo-boost-unlock

I'm now unsure if I understood your inquiry. Please try again and use small words. :)

[miyconst]

Yes, that's my website 😄.

In short:

• There is already a way to create a DXE driver and inject it into the BIOS.
• I am looking for a way to create a PEI driver, which is injected into another BIOS region.

The DXE drivers are not executed when resuming from the sleep mode, that's why applying such hack effectively disables the sleep mode.

[andrescera]

@miyconst we are actually on the same boat, i've been trying to find the way to create a PEI driver since the turbo dies when the board resumes from sleep on both os x and windows

[mxp100]

needed service listeners for wake up for reinitialize hacks https://www.uefi.org/sites/default/files/resources/PI_Spec_1_6.pdf may be help this docs....

[miyconst]

It seems to be done by a user called ser8989 - АНЛОК (Андервольтинг) турбобуста процессора Unlock turbo boost (Undervolting).

[freecableguy]

PEI embedding: https://forums.anandtech.com/threads/what-controls-turbo-core-in-xeons.2496647/post-40316855

[freecableguy]

Specific targets for more information on PEI embedding:

https://forums.overclockers.ru/viewtopic.php?p=17089770#p17089770 https://forums.overclockers.ru/viewtopic.php?p=17092454#p17092454

[miyconst]

Following this guide I was able to successfully implement PEI embedding into a Machinist X99Z / X99-K9 BIOS. The BIOS is available in the Mi899 tool.

Closing the issue as the PEI embedding solution is available and tested.