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Re: [Qemu-devel] SMP for PReP architecture

From: Scott Wood
Subject: Re: [Qemu-devel] SMP for PReP architecture
Date: Tue, 3 Jul 2012 14:53:15 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120615 Thunderbird/13.0.1

On 07/03/2012 02:45 PM, Alexander Graf wrote:
> On 03.07.2012, at 07:07, Eli Lewis wrote:
>>>> Maybe
>>>> we can change the BSP of POK in order to support the MPC8544DS board.
>>> It's not only the board. Kernel mode is vastly different from the 601 
>>> you're probably targeting today.
>> Currently POK
>> supposes to run on a sort of ppc750 processor (I am invoking Qemu with -cpu
>> ppc32) . Could you please suggest me some useful documentation that could 
>> help me
>> perform the POK porting? 
> Stuart, Scott, is there any helpful documentation available for 750 -> e500 
> conversion?

Read the chip manuals, the ISA and/or EREF, and look at what Linux does
differently for each.

What is POK?

>>>> In QEmu, is the SMP emulation supported for all e500  or for the e500v2 
>>> only?
>>> It should work with all e500 cores. Keep in mind that QEMU doesn't 
>>> implement 
>>> 100% of the spec yet though, so if you encounter issues, let me know.
>> Where I can
>> find (if any) a list of the functionalities implemented/not implemented? 
> There is no list :). Most of the bits not implemented are SPRs, so you will 
> quickly find out. They will throw an error at you.

Only if the SPR is entirely unimplemented, not if a certain bit or
semantic isn't implemented.


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