[LinuxBIOS] i440bx RAM initialization code (SPD)

Peter Stuge stuge-linuxbios at cdy.org
Mon Apr 30 23:08:17 CEST 2007

On Mon, Apr 30, 2007 at 12:19:46PM -0700, roger wrote:
> (or is memory init and activating SPD two seperate things here?)

SPD is short for Serial Presence Detect, it's the protocol/method
used to probe what type of RAM module is installed in a RAM slot.

SPD works by reading parameters from an EEPROM on the RAM module.

Generic memory controller initialization must use SPD, but it's
quite possible to hardcode init for a specific RAM module if you
already know the parameters.


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