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Joined 7 months ago
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Cake day: March 25th, 2024

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  • I am really confused about this meme template, didn’t its usage used to be satirical (not sure if that’s the right word)? I remember seeing ones like “Nobody ever needed maths”, but recently I am seeing them inverted where the subject matter is actually criticised for being useless. Instead of claiming something useful to be useless. Can someone explain? when did the usage shift?



  • It’s just the easiest way to do this. Memory training is a very early step in the boot process. Firmware only has the CPU cache available as memory and most hardware in the system isn’t initialized yet. Most of this isn’t even done by the UEFI firmware itself, but by calling a binary blob provided by the CPU manufacturer, for intel it is called FSP and AMD i believe it is AGESA. I’d have to check, but I believe at the point memory training is running the PCIe bus has not even been brought up and scanned, so video output in this phase would require extensive reengineering of the early boot process from both the CPU manufacturer, firmware vendors and the board manufacturer. PCIe has DMA so making that work without memory might be a challenge. There are three easy to implement solutions though: post codes if your mainboard has a display for them, serial output if the board has a serial port (though this needs another device to read the messages) and the cheapest solution could be a flashing LED on the board labeled memory training in progress.