[Qemu-devel] CELF Project Proposal - Device tree support for QEMU system emulation.


Anthony Liguori <anthony@...>
 

Rob Landley wrote:
For background of CELF project proposals, see:

http://elinux.org/CELF_Open_Project_Proposal_2010

Summary:

Integrate a flattened device tree parser into the emulator QEMU, so QEMU can create board emulations on the fly (at runtime) from the same data files the Linux kernel uses to attach drivers to hardware.
See

http://thread.gmane.org/gmane.comp.emulators.qemu/44869

I'm not sure why Paul never pushed it but I think he was able to create the syborg board purely from a device tree.

Regards,

Anthony Liguori


Rob Landley
 

On Thursday 17 December 2009 14:29:47 Anthony Liguori wrote:
Rob Landley wrote:
For background of CELF project proposals, see:

http://elinux.org/CELF_Open_Project_Proposal_2010

Summary:

Integrate a flattened device tree parser into the emulator QEMU, so QEMU
can create board emulations on the fly (at runtime) from the same data
files the Linux kernel uses to attach drivers to hardware.
See

http://thread.gmane.org/gmane.comp.emulators.qemu/44869

I'm not sure why Paul never pushed it but I think he was able to create
the syborg board purely from a device tree.
He'd be a great person to sponsor to get it finished/updated and checked
in, then. (Or his company, code sourcry, would.) Me, I just want to use the
result.

By the way, device trees were a topic at this year's kernel summit, and LWN
did an excellent write-up, as usual: http://lwn.net/Articles/357487/

(If it does get done, somebody needs to write a HOWTO...)

Rob
--
Latency is more important than throughput. It's that simple. - Linus Torvalds


Rob Landley
 

On Tuesday 22 December 2009 12:54:22 Rob Landley wrote:
On Thursday 17 December 2009 14:29:47 Anthony Liguori wrote:
See

http://thread.gmane.org/gmane.comp.emulators.qemu/44869

I'm not sure why Paul never pushed it but I think he was able to create
the syborg board purely from a device tree.
He'd be a great person to sponsor to get it finished/updated and checked
in, then. (Or his company, code sourcry, would.) Me, I just want to use
the result.

By the way, device trees were a topic at this year's kernel summit, and LWN
did an excellent write-up, as usual: http://lwn.net/Articles/357487/
One more piece of data to attach to the proposal, the recent submission of
device tree support for ARM:

http://lwn.net/Articles/367752/

Rob
--
Latency is more important than throughput. It's that simple. - Linus Torvalds