Re: [Qemu-devel] [RFC PATCH 0/9] Configurable PCI device addresses

[Anthony Liguori <anthony@codemonkey.ws>]

Paul Brook wrote:
>> I think we're starting to get to the tipping point where we really just
>> need to introduce a machine config file.
>>
>> Paul, you mentioned you were working on something before?  Care to
>> update us on the status?
>>
>> I know there was a fair bit of support before for a FDT based machine
>> config.
>>     
>
> I have a FDT based machine descriptions working locally.
>   

Can you post what you have?

> Currently it's only capable of generating a small subset ARM embedded boards. 
> There are a few issues that need to be resolved before it can replace most of 
> the current qemu machines:
>
> - How to handle "plug-n-play" busses like PCI. The FDT provided to the kernel 
> generally just describes the host bridge, and the kernel/bios figures 
> everything else out using the normal PCI config mechanisms.
> - How it will interact with commandline options like -nic that modify which 
> hardware is present. One possibility is to remove these options (remove -net 
> nic, but leave -net tap, etc.). If users want different numbers/types of NICs 
> they should use a different machine config.
> - How to handle GPIO pins, and other interconnects like I2S, SSI and I2C. I 
> guess this is mainly coming up with suitable FDT representations.
>
> I have not implemented a user level config file. My work effectively just 
> replaces integratorcp_init and friends.
>   

A user level config file can come later.

Regards,

Anthony Liguori

> Paul
>