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Re: Fwd: memory probing


From: alfred hitch
Subject: Re: Fwd: memory probing
Date: Tue, 10 May 2005 04:33:25 -0400

thanks,
but what did u mean write and verify, 
I thhot grub depends heavilly on bios calls for all this .. 

Alfred

On 5/10/05, coly li <address@hidden> wrote:
> alfred hitch:
> 
> It's not so easy to get the proper answer. it depends on your hardware. for 
> I'm not familiar with embedded enviornmnet, I can only give you some idea for 
> x86 platform.
> 
> you should know your memory address space layouts. which range is for other 
> peripheral, which range is for real memory. different range use difference 
> detecting scheme. for the range of real memory, the simplest method is "write 
> and verify".
> 
> but, for I'm not a embedded programmer, I can't give you more information for 
> non-x86. FYI.
> 
> coly li
> address@hidden
> 2005-05-10
> 
> ======= 2005-05-10 14:36:51 original messages:=======
> 
> >---------- Forwarded message ----------
> >From: alfred hitch <address@hidden>
> >Date: May 10, 2005 2:13 AM
> >Subject: Re: memory probing
> >To: The development of GRUB 2 <address@hidden>
> >
> >
> >Hi,
> >
> >thanks for your response,
> >actually what I am looking for is that does grub and all use bios
> >calls to find out the memory size ?
> >on my system there is no bios, ixdp425 based plattform,
> >then can I somehow probe amount of memory and not use a #define'ed one ?
> >
> >Cheers,
> >Alfred
> >
> >On 5/10/05, coly li <address@hidden> wrote:
> >> alfred hitch:
> >>
> >> hi! I guess what you want to know more is the initialization for linux 
> >> kernel.
> >> I know a guy who wirtes a perfect text named "i386 linux boot howto", you 
> >> can find out this text on www.tldp.org.
> >> also, I sugest you read the linux boot protocol, you can find this text in 
> >> linux kenrel source code. maybe the name is boot.txt.
> >>
> >> good luck;-)
> >>
> >> coly li
> >> address@hidden
> >> 2005-05-10
> >>
> >> ======= 2005-05-10 12:08:54 original messages:=======
> >>
> >> >Hi All,
> >> >
> >> >I am trying to understand working of bootloaders and have a question
> >> >(which might be very elementary perhaps).
> >> >
> >> >I wanted to understand how does bootloaders probe memory installed on
> >> >system and thus pass the correct mem option across to linux kernel
> >> >say.
> >> >
> >> >Can someone please explain if this is dependant on bios necessarilly,
> >> >as I am looking for doing something similar on ixdp425 plattform.
> >> >
> >> >Can u please point me to some relavant doc / code ..
> >> >
> >> >Cheers,
> >> >Alfred
> >> >
> >> >
> >> >_______________________________________________
> >> >Grub-devel mailing list
> >> >address@hidden
> >> >http://lists.gnu.org/mailman/listinfo/grub-devel
> >>
> >> = = = = = = = = = = = = = = = = = = = =
> >>
> >>
> >> _______________________________________________
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> >>
> >>
> >>
> >
> >
> 
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> 
>

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