[LinuxBIOS] [PATCH] v2: AZZA PT-6IBD support
popkonserve
popkonserve at gmx.de
Wed Oct 31 19:26:58 CET 2007
>>> Thanks guys to have this board in svn now. It boots ok here. Except for
>>> a few problems:
>>>
>>> - my processor has only 32 kb of cache reported though it has 512kb
>>> withen booted with proprietiary bios
>>> - only one DIMM is recognized in the motherboard
>> L2 cache is disabled. Only L1 is there.
>>
>>
>> Stefan
>
> Is there a way to enable L2 cache.
>
yes, there is. as i wrote before:
>hmm, no. actually x86_enable_cache() just emits a post code, prints
>some info and calls enable_cache() which is an inline in cache.h which
>just enables L1 cache by flipping a bit in the processor configuration
>register 0 (CR0). that's all.
>it should be renamed to enable_L1_cache() to avoid confusion.
>the L2 cache can not be enabled in CR0. just take a look at the code
>and you'll see.
page 7:
http://www.cs.inf.ethz.ch/stricker/lab/doc/intel-part4.pdf
line 473ff
http://fxr.watson.org/fxr/source/i386/i386/initcpu.c?v=RELENG4
(back after a ulong time..as soon as my linux machine is up+running i'll
be back in programming business)
Holger
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