[coreboot] Intel 8xx northbridge ram init is wrong

Joseph Smith joe at settoplinux.org
Tue Jun 2 18:06:44 CEST 2009

On Tue, 02 Jun 2009 18:00:53 +0200, Stefan Reinauer <stepan at coresystems.de>
> On 02.06.2009 17:13 Uhr, Joseph Smith wrote:
>> Hello,
>> Was anyone aware we are doing the do_ram_command() wrong on the i8xx
>> nothbridges?
>> We are sending the ram commands to all memory and doing our dummy reads
> at
>> the end.
>> I just found an Intel doc that says we are supposed to do all the ram
>> commands to each row of memory.
> ...
>> I will work on a patch for the i830, we should probibly fix this on the
>> other Intle northbridges.
> Check the i945 code for an example on how to do it... older chipsets
> might/might not be different...
Would it be different for SDRAM vs DDR ?

Joseph Smith

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