Re: What does rmo/tce stand for in powerpc?

On 02.11.2011 [19:17:20 +0800], Ryan Wang wrote:

2011/11/2 Nishanth Aravamudan [off-list ref]

quoted

Hi Ryan,

On 01.11.2011 [14:25:43 +0800], Ryan Wang wrote:

quoted

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>TCEs
overlap

''

I wonder what does RMO mean, and TCE?

RMO = Real Mode Offset -- deprecated in terms of Real Mode Area in PAPR.

TCE = Translation Control Entry

You should be able to find descriptions of both in PAPR.

Thanks Nish!

But I searched <Power.orgTM Standard for Embedded Power ArchitectureTM
Platform Requirements> and failed to found the concept RMO or Real Mode
Offset.

Will you please give me some hints to the docs??Thanks,

Section 14.1.1 Real Mode Accesses in PAPR 2.4

Thanks,
Nish

-- 
Nishanth Aravamudan [off-list ref]
IBM Linux Technology Center