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Date: Wed, 2 Nov 2011 14:19:20 -0500
From: Scott Wood <scottwood@freescale.com>
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To: Ryan Wang <openspace.wang@gmail.com>
Subject: Re: What does rmo/tce stand for in powerpc?
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Cc: Nishanth Aravamudan <nacc@us.ibm.com>, linuxppc-dev@ozlabs.org
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On 11/02/2011 06:17 AM, Ryan Wang wrote:
>=20
>=20
> 2011/11/2 Nishanth Aravamudan <nacc@us.ibm.com <mailto:nacc@us.ibm.com>=
>
>=20
>     Hi Ryan,
>=20
>     On 01.11.2011 [14:25:43 +0800], Ryan Wang wrote:
>     > Hi,
>     >
>     > In kernel source comments, I saw the words:
>     > ''
>     >
>     > alloc_top is set to the top of RMO, eventually shrink down if the
>     > <http://lxr.linux.no/linux+*/arch/powerpc/kernel/prom_init.c#L972
>     <http://lxr.linux.no/linux+*/arch/powerpc/kernel/prom_init.c#L972>>=
TCEs
>     > overlap
>     >
>     > ''
>     >
>     > I wonder what does RMO mean, and TCE?
>=20
>     RMO =3D Real Mode Offset -- deprecated in terms of Real Mode Area i=
n PAPR.
>=20
>     TCE =3D Translation Control Entry
>=20
>     You should be able to find descriptions of both in PAPR.
>=20
>=20
> Thanks Nish!
>=20
> But I searched <Power.orgTM Standard for Embedded Power ArchitectureTM
> Platform Requirements> and failed to found the concept RMO or Real Mode
> Offset.
>=20
> Will you please give me some hints to the docs=EF=BC=9FThanks,

ePAPR and PAPR are not the same thing.

It looks like PAPR is only available to power.org members.

-Scott