Sorry, I do not mean I have finished the porting, I just read the raminit.inc about E7500, now I am reading E7501 and E7500 Intel bios specification. I try to find the difference between two chipsets. But I am raw in ram initialization. The part is so complex. I want to get help from you.
Best Regards Terry Chen
-----Original Message----- From: Eric W. Biederman [mailto:ebiederman@lnxi.com] Sent: Friday, January 10, 2003 1:26 PM To: Terry B. Chen Cc: linuxbios@clustermatic.org Subject: Re: about E7501
"Terry B. Chen" terryc@tyanchina.com writes:
Is anyone interested in E7501? What is the difference between FSB 533 and 400 in Northbridge? I have a thought to port E7501 to E7500.
Hey before you do that could you give me a copy of your E7501 port? Sorry I could not resist. I doubt the differences are especially large but I have not gone through the documents and looked closely yet.
Eric
"Terry B. Chen" terryc@tyanchina.com writes:
Sorry, I do not mean I have finished the porting, I just read the raminit.inc about E7500, now I am reading E7501 and E7500 Intel bios specification. I try to find the difference between two chipsets. But I am raw in ram initialization. The part is so complex. I want to get help from you.
You missed the smiley :)
So you don't get daunted actual ram initialization is not particularly hard.
The hard parts are: - The code must be in assembly - computing the timing parameters from SPD EEPROMs on the DIMMs. - handling arbitrary DIMMs
My hunch is there will not need to be too many changes except in the places the DIMMs give their timing information in nanoseconds, and the chipset wants that information in clock cycles.
Eric
-
ebiederman＠lnxi.com -
Terry B. Chen