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On 08/26/2013 09:32 PM, TigerLiu@viatech.com.cn wrote:
Hi,Rini: Thanks for your reply!
Just use FDT as kernel parameter passed to linux kernel's entry
point?
That is one use, yes. But that may or may not be a recommended way to store the FDT for a platform (based on some discussion on the devicetrees mailing list, while there's no formal recommendations yet, having the shipped with platform FDT be done in such a way that it can be updated is strongly encouraged, possibly without having to replace the rest of the firmware as that's seen as a possible way to brick the hardware).
If you're planning on shipping hardware soon, with a device tree embedded within it, I would strongly encourage talking with devicetrees@vger.kernel.org about how to best do it, for your platform.
So, based on your experience: Do most ARM SOC production vendors adopt which way to store dtb binary?
I think storing dtb binary into a dedicated nv-storage(such as : some blocks in NAND chip) is a better way.
The best way to do it is something being actively discussed as today not many vendors do but we're rapidly approaching the point where vendors ship hardware with kernels that use DT for most things so the problem needs to be solved, or at least recommendations made.
- -- Tom