View source for KGPE-D16

{{Infobox motherboard
  |image = Kgpe-d16.jpeg
  |image_size = 300

  |introduced = 2010
  |manufacturer = ASUS

  |socket = 2x [[G34]]
  |northbridge = 1x AMD SR5690
  |southbridge = AMD SP5100
  |superio = Winbond W83667HG-A
  |bmc = ASPEED AST2050 (OpenBMC-compatible)
  |bmcflash = Removable Module
  |ram = 16 slots (8 channels) DDR3-1600 ECC RDIMM/UDIMM, up to 192GB on Coreboot
  |bios = 2 MiB socketed DIP-8 (W25Q16V)
  |formfactor = [[SSI]] EEB
  |power = 2x 8-pin EPS
  
  |slot1 = PCIe Gen2 x16 (disabled if Slot 5 in use)
  |slot2 = PCIe Gen2 x16
  |slot3 = PCIe Gen2 x8 (electrically x4)
  |slot4 = PCIe Gen2 x16 (x8 if Slot 2 in use)
  |slot5 = PCIe Gen2 x16 (electrically x8)
  |slot6 = 32-bit Legacy PCI
  |slot7 = ASUS [[PIKE2008]] Interface

  |gpu = AST2050 Integrated VGA
  |nic = 2x Intel 82574L Gigabit
  |storagecontroller = SP5100's SATA2 (3.0 Gbps), no SAS unless [[PIKE2008]] installed
  |usbcontroller = SP5100's onboard USB 2.0
  |serial = One SIO-provided RS232, one virtual BMC console port
  |audio = None (ASUS recommended a PCI sound card)
}}

The '''ASUS KGPE-D16''', commonly referred to as the '''D16''', is a dual-socket server/workstation motherboard released by ASUS on April 7th, 2010<ref>https://www.techpowerup.com/119540/asus-releases-kgpe-d16-socket-g34-motherboard-for-12-core-amd-opteron-processors</ref>, for use with [[Socket G34]] Opteron processors. Originally sold as a standalone board in a mostly-standard SSI EEB form factor, and intended for both desktop and rack-mounted uses, the KGPE-D16 is popular among enthusiasts as a relatively versatile and workstation-friendly G34 platform.

Ports of [[Coreboot]] and [[OpenBMC]] to the D16 was developed by Raptor Engineering between 2015 and 2017. Among major Coreboot versions, it was first supported in Coreboot 4.2 in October 2015, and last supported in Coreboot 4.11 in November 2019. Support was dropped beginning in Coreboot 4.12, primarily due to lack of maintenance after Raptor Engineering discontinued work on the platform. Between 2021 and 2022, after seeking funding for such an effort for several years, Dasharo/3mdeb developed an out-of-tree fork of Coreboot 4.15, but it was not upstreamed, and has not been significantly maintained since 2022. At present, there does not appear to be a significant effort to re-upstream the KGPE-D16 into Coreboot.

Most KGPE-D16 owners currently use either upstream Coreboot 4.11, or one of multiple forks of it, such as [[coreboot-D16]] or [[Libreboot]].

== Board Revisions ==
Three KGPE-D16 revisions are known: 1.03G, 1.04, and 1.05. The differences between the three revisions have not been disclosed. The more recent boards (1.04 and 1.05) are generally in better condition and are recommended. The three boards, when in similar condition, perform equally well.

== Board Layout ==
[[File:KGPE-D16 Diagram.png|frameless|400x400px]]
[[File:KGPE-D16 BlockDiagram.png|frameless|400x400px]]

== RAM Support ==
[[File:KGPE-D16-DIMM-Diagram.png|frameless|1000x1000px]]

When buying memory for a KGPE-D16 motherboard running coreboot, stick to models and configurations that are known to work. Crucial CT16G3ERSLD4160B (aka: Micron MT36KSF2G72PZ-1G6XXXX, X=any value) and Samsung M393B2G70BH0-CK0 are the recommended RAM modules for new builders, these two RAM modules have been thoroughly tested with [[coreboot-15h]]. All KGPE-D16 motherboards are old technology, the condition of the RAM slots may be suboptimal. Install RAM modules two at a time according to the RAM configuration chart to step towards your target RAM configuration; confirm the motherboard can boot after each additional pair. Reseat the RAM if an additional pair does not boot, or try a different RAM module (in case the RAM itself is faulty). It takes a degree of luck to install all 16 RAM modules on the first try, reseating is usually required.

=== coreboot-15h ===
The 15h.org [https://git.15h.org/mrothfuss/coreboot-15h/src/branch/4.11_branch fork of coreboot 4.11] has been developed to improve the memory support and runtime stability of coreboot on the KGPE-D16.
==== Stable Configurations ====
{| class="wikitable"
|+
!Total Memory
!RAM Module
!RAM Type
!CPU
!Microcode
!Motherboard
!Release
!Tester
!memtest86+
|-
|128GB
|Crucial CT16G3ERSLD4160B (x8)
|16GB 1600MHz ECC RDIMM DR
|AMD Opteron 6328 (x2)
|6000852
|KGPE-D16 v1.05
|[https://15h.org/images/2/2c/Kgpe-d16_20240914v4.11-065549759c_2MB.rom 2024.09.14 v4.11-065549759c]
|mrothfuss
|[https://15h.org/images/0/0d/KGPE-D16_CT16G3ERSLD4160Bx8_memtest.jpg Pass (x1)]
|-
|128GB
|Samsung M393B2G70BH0-CK0 (x8)
|16GB 1600MHz ECC RDIMM DR
|AMD Opteron 6328 (x2)
|6000852
|KGPE-D16 v1.05
|[https://15h.org/images/2/2c/Kgpe-d16_20240914v4.11-065549759c_2MB.rom 2024.09.14 v4.11-065549759c]
|mrothfuss
|[https://15h.org/images/9/99/KGPE-D16_M393B2G70BH0-CK0x8_Memtest.jpg Pass (x1)]
|-
|32GB
|Samsung M393B2G70BH0-CK0 (x2)
|16GB 1600MHz ECC RDIMM DR
|AMD Opteron 6328 (x2)
|6000852
|KGPE-D16 v1.05
|[https://15h.org/images/2/2c/Kgpe-d16_20240914v4.11-065549759c_2MB.rom 2024.09.14 v4.11-065549759c]
|mrothfuss
|[https://15h.org/images/5/5c/KGPE-D16_M393B2G70BH0-CK0_x2_Memtest.jpg Pass (x2)]
|-
|32GB
|Crucial CT16G3ERSLD4160B (x2)
|16GB 1600MHz ECC RDIMM DR
|AMD Opteron 6282 SE (x2)
|N/A
|KGPE-D16 v1.03
|Self Compiled
|Arha
|Pass (x1)
|-
|16GB
|ELPIDA EBJ81RF4BDWD-DJ-F (x2)
|8GB 1333MHz ECC RDIMM DR
|AMD Opteron 6328 (x2)
|6000852
|KGPE-D16 v1.05
|[https://15h.org/images/2/2c/Kgpe-d16_20240914v4.11-065549759c_2MB.rom 2024.09.14 v4.11-065549759c]
|mrothfuss
|[https://15h.org/images/d/d9/KGPE-D16_EBJ81RF4BDWD-DJ-F_Memtest.jpg Pass (x1)]
|-
|16GB
|Kingston KVR16E11/8 (x2)
|8GB 1600MHz ECC UDIMM DR
|AMD Opteron 6328 (x2)
|6000852
|KGPE-D16 v1.05
|[https://15h.org/images/2/2c/Kgpe-d16_20240914v4.11-065549759c_2MB.rom 2024.09.14 v4.11-065549759c]
|mrothfuss
|[https://15h.org/images/5/5d/KGPE-D16_KVR16E11-8.jpg Pass (x1)]
|-
|16GB
|Samsung M393B1K70DH0-YH9 (x2)
|8GB 1333MHz ECC RDIMM DR
|AMD Opteron 6328 (x2)
|6000852
|KGPE-D16 v1.05
|[https://15h.org/images/2/2c/Kgpe-d16_20240914v4.11-065549759c_2MB.rom 2024.09.14 v4.11-065549759c]
|mrothfuss
|[https://15h.org/images/2/2a/KGPE-D16_M393B1K70DH0-YH9_Memtest.jpg Pass (x1)]
|-
|8GB
|Super Talent W1333EB4GS (x2)
|4GB 1333MHz ECC UDIMM DR
|AMD Opteron 6328 (x2)
|6000852
|KGPE-D16 v1.05
|[https://15h.org/images/2/2c/Kgpe-d16_20240914v4.11-065549759c_2MB.rom 2024.09.14 v4.11-065549759c]
|mrothfuss
|[https://15h.org/images/c/cd/KGPE-D16_W1333EB4GS_Memtest.jpg Pass (x1)]
|}
==== Unstable Configurations ====
{| class="wikitable"
|+
!Total Memory
!RAM Module
!RAM Type
!CPU
!Microcode
!Motherboard
!Release
!Tester
!Remarks
|-
|256GB
|Samsung M393B2G70BH0-CK0 (x16)
|16GB 1600MHz ECC RDIMM DR
|AMD Opteron 6328 (x2)
|6000852
|KGPE-D16 v1.05
|[https://15h.org/images/2/2c/Kgpe-d16_20240914v4.11-065549759c_2MB.rom 2024.09.14 v4.11-065549759c]
|mrothfuss
|Boots, survived a 5h tmpfs compilation stress test, crashed during memtest86+ 7.00
|-
|64GB
|Samsung M393B4G70BM0-YH9 (x2)
|32GB 1333MHz ECC RDIMM QR
|AMD Opteron 6328 (x2)
|6000852
|KGPE-D16 v1.05
|[https://15h.org/images/2/2c/Kgpe-d16_20240914v4.11-065549759c_2MB.rom 2024.09.14 v4.11-065549759c]
|mrothfuss
|Does not boot
|-
|32GB
|Super Talent W13RC16G4H (x2)
|16GB 1333MHz ECC RDIMM DR
|AMD Opteron 6328 (x2)
|6000852
|KGPE-D16 v1.05
|[https://15h.org/images/2/2c/Kgpe-d16_20240914v4.11-065549759c_2MB.rom 2024.09.14 v4.11-065549759c]
|mrothfuss
|Boots, crashed during memtest86+ 7.00
|}

== Cooling ==

A few attachments have been designed to add cooling fans to the motherboard. Server motherboards expect to have a high amount of airflow (often loud) to keep components cool during 24/7 operation. To maintain component health in quieter builds, fan mounts have been designed.

=== Chipset Fan ===
[[File:KGPE-D16-40mm-Noctua-chipset.png|frameless|300px]]
[[File:KGPE-D16 Northbridge Cooling Fan.jpeg|frameless|300px]]

This file is designed to work with a Noctua NF-A4x10 fan. If your motherboard is not in a high-airflow server case, the chipset fan is highly recommended. The fan bracket mounts onto the chipset heatsink by snapping onto the metal arms that secure the heatsink. The file may need to be editted to accomodate the exact placement of your 40mm fan cable (the provided design has a cable hole at the bottom right position).

[https://15h.org/images/8/8a/KGPE-D16_Chipsetfan_40mm.stl KGPE-D16_Chipsetfan_40mm.stl]

[https://15h.org/images/9/98/KGPE-D16_Chipsetfan_40mm.blend KGPE-D16_Chipsetfan_40mm.blend]

=== RAM Fan ===
[[File:KGPE-D16-80mm-Noctua-ram.png|frameless|300x300px]]

This file is designed to work with a Noctua NF-A8 fan. When two of these fan mounts are attached to a Noctua NF-A8 fan, they will be spaced correctly to snap onto the KGPE-D16 RAM clips (white). These clips vary between boards. The included file is designed to work with L-shaped RAM clips (most often found on 1.04 and 1.05 boards). It will not fit as nicely onto the parallelogram-shaped RAM clips (most often found on 1.03G boards).

[https://15h.org/images/f/f8/KGPE-D16_Ramfan_80mm.stl KGPE-D16_Ramfan_80mm.stl]

[https://15h.org/images/9/9c/KGPE-D16_Ramfan_80mm.blend KGPE-D16_Ramfan_80mm.blend]

== TPM ==
There are few known compatible TPM's
{| class="wikitable"
|+
!TPM version
!Chipset
!Manufacturer
!Model number
!Confirmed by
!Remarks
|-
|2.0
|SLB9665
|Asus
|TPM-L R2.0
|3mdeb
|expensive
|-
|1.2
|SLB9635
|Asus
|MC01B0-B01
|3mdeb
|can be found at https://shop.3mdeb.com/shop/modules/tpm-module-for-asus-kgpe-d16/
|-
|1.2
|SLB9655
|Supermicro
|AOM-TPM-9655V
|Mike
|can be found on 2nd hand marketplaces
|}


== Flashing ==
Flashing instructions

=== Compatible SPI Chips ===
Coreboot is compatible with the 2MB chip that comes with the KGPE-D16. It is possible to expand the ROM space up to 16MB using replacement SPI chips. Heads requires a 16MB chip to work on the KGPE-D16 board.
{| class="wikitable"
|+
!Model
!Size (MB)
!Size (Mb)
|-
|W25Q16BVAIG
|2
|16
|-
|W25Q64BVAIG
|8
|64
|-
|W25Q128FVIQ
|16
|128
|}

=== Hardware ===
You will need a flash chip programmer like the cha341a rev 1.7 <ref>https://github.com/linuxboot/heads-wiki/issues/120</ref>

If your gonna be running something like heads you will need a 16MB flash chip like the W25Q128FVIQ<ref>https://github.com/mrothfuss/coreboot-D16?tab=readme-ov-file#tested-hardware</ref> (OEM ch is only 2MB)

=== flashing the new 16MB chip ===
Put the flash chip in the flasher (make sure the chip in the right direction) and plug the flasher into your linux computer then use ```flashrom --programmer ch341a_spi -w bios.img``` to flash the chip (replace the programmer and file name accordingly as needed)

[[File:Flashing_DIP-8.jpg|frameless|337x599px]]

If your using the ch341 make sure the voltage is correct see references to ch341 configuration

=== placing the new flash chip ===
Remove the old flash chip by gently wiggling it back and though while pulling upward

Then place the new flash chip make sure its in the right orientation as indicated by the notch on the chip

=== Video instructions ===
{{#ev:youtube|hd7cQqlWPno}}

== EEPROM Pin out ==
Here is a picture detailing the eeprom pin out this can be good if your using something like the [https://shop.3mdeb.com/shop/adapters/asus-kgpe-d16-flash-chip-adapter/ Dasharo Asus KGPE-D16 Flash Chip Adapter] or have bought a board without a flash chip and don't know what way to place the chip (the notch should be pointed inward)
[[File:Pin out.png|thumb]]


== Refferances ==