Difference between revisions of "User:Meklort/SORDIMM"
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== Enabling SO-DOMM modules on the Talos II == | == Enabling SO-DOMM modules on the Talos II == | ||
The Talos II supports a large number of full sized DIMMs, however, in order to check the feasibility of a smaller form factor (read: laptop), the hardware and firmware need to be able to support SO-DIMMs. | The Talos II supports a large number of full sized DIMMs, however, in order to check the feasibility of a smaller form factor (read: laptop), the hardware and firmware need to be able to support SO-DIMMs. | ||
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| + | [[File:Sordimm.jpg|200px|left|Talos II with SORDIMMs]] | ||
=== Hardware Requirements === | === Hardware Requirements === | ||
Revision as of 20:57, 9 December 2018
Enabling SO-DOMM modules on the Talos II
The Talos II supports a large number of full sized DIMMs, however, in order to check the feasibility of a smaller form factor (read: laptop), the hardware and firmware need to be able to support SO-DIMMs.
Hardware Requirements
The Sofra POWER9 CPU requires registered DDR4 RAM with EC. This is relatively easy to find in the full-sized form factor, however it becomes a bit harder to find in the SO-DIMM form factor. In this case, we actually need to use SORDIMMs (note the extra R for registered).
After contacting a number of vendors, I received a response from Viking Technology where they were willing to send 10x 16GB, 2666MHz SORDIMM to Digikey so that I could purchase a few sticks: https://www.digikey.com/products/en?keywords=VR9FR2G7228JBKSBD4 Datasheet: https://media.digikey.com/pdf/Data%20Sheets/Viking%20PDFs/PS9FRxx72x8xxx_Rev.E_3_7_2018_DS.pdf
In order to adapt the above modules to the full sized slot, something like the following can be used: https://www.amazon.com/gp/product/B07DMNH15W/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Software Requirements
Before SORDIMM modules can be used, a couple of minor patches to the hostboot firmware must be made. The first patch is simply enabling hostboot to recognize that SORDIMM modules are valid.
File:0001-Update-hostboot-to-allow-DDR4-SORDIMM-modules-to-be- (1).patch
