[U-Boot-Users] Starting a patch for TI Davinci support

[U-Boot-Users] Starting a patch for TI Davinci support

[Philip Balister]

I am trying to get a patch together to add support for the TI Davinci 
processor into u-boot. I have started with one of the patches floating 
around the internet and am in the process of modifying to support the 
Lyrtech SFF SDR board. Currently, this patch will boot on the board and 
use the network and do some ram tests. I haven't worked through NAND 
support yet.

The patch is against git. I am very interested in structural comments, 
like the best way to support similar, but different boards.

I would be glad to collect additional patches and see if we can't get 
support for davinci boards into u-boot.

The current patch is here:

http://www.balister.org/~balister/u-boot-sffsdr.patch

Philip
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[U-Boot-Users] Starting a patch for TI Davinci support

[Peter Pearse]

 
I bottom post

> -----Original Message-----
> From: u-boot-users-bounces at lists.sourceforge.net 
> [mailto:u-boot-users-bounces at lists.sourceforge.net] On Behalf 
> Of Philip Balister
> Sent: 21 June 2007 15:23
> To: u-boot-users at lists.sourceforge.net
> Subject: [U-Boot-Users] Starting a patch for TI Davinci support
> 
> I am trying to get a patch together to add support for the TI 
> Davinci processor into u-boot. I have started with one of the 
> patches floating around the internet and am in the process of 
> modifying to support the Lyrtech SFF SDR board. Currently, 
> this patch will boot on the board and use the network and do 
> some ram tests. I haven't worked through NAND support yet.
> 
> The patch is against git. I am very interested in structural 
> comments, like the best way to support similar, but different boards.
> 
> I would be glad to collect additional patches and see if we 
> can't get support for davinci boards into u-boot.
> 
> The current patch is here:
> 
> http://www.balister.org/~balister/u-boot-sffsdr.patch
> 
> Philip
> 
Philip

	Have you checked the previous DaVinci patches
- see http://blog.gmane.org/gmane.comp.boot-loaders.u-boot

Peter 

[U-Boot-Users] Starting a patch for TI Davinci support

[Philip Balister]

Peter Pearse wrote:
> Philip
> 
> 	Have you checked the previous DaVinci patches
> - see http://blog.gmane.org/gmane.comp.boot-loaders.u-boot

Sorry for the delay replying, I have been on vacation.

I have looked at the one one from koi8. While I there is a lot of good 
content there, I have trouble with the configuration method. Basically, 
he supports three boards by #fidef'ing based on a #define of a board 
type. The ifdef'ing logic gets fairly involved and I am concerned this 
method will not scale to a large number of different boards based on the 
Davinci processor.

I guess the first issue we need to resolve for Davinci support is what 
it the proper way to support a collection of boards that use the same 
underlying hardware, but have different memory architectures (ie NAND 
versus NOR), different PHY interfacesm but also have some shared code 
also. The ARM processor in the Davinci is an ARM926ejs, which is also 
shared by some of the OMAP line also.

Philip

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