(1) The bios from original MB have to handle registers 40~4F, but I check them in i845GV datasheet, they are all intel reserved. Where can I find information about such intel reserved registers? (2) what earlymtrr doing for? Is it related to ddr sdram init?
tks zhu
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On Sat, 18 Sep 2004, zhu shi song wrote:
(1) The bios from original MB have to handle registers 40~4F, but I check them in i845GV datasheet, they are all intel reserved. Where can I find information about such intel reserved registers?
unless you get the super top secret Intel docs, you won't get that info.
(2) what earlymtrr doing for? Is it related to ddr sdram init?
I assume this is V1? earlymtrr just sets up mtrr's so that linuxbios runs quickly.
ron
"Ronald G. Minnich" rminnich@lanl.gov writes:
On Sat, 18 Sep 2004, zhu shi song wrote:
(1) The bios from original MB have to handle registers 40~4F, but I check them in i845GV datasheet, they are all intel reserved. Where can I find information about such intel reserved registers?
unless you get the super top secret Intel docs, you won't get that info.
Either that or you can reverse engineer them ;)
Observing what another BIOS does can be interesting.
Eric
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Ronald G. Minnich -
zhu shi song