On 08/24/2012 02:48 AM, Lukasz Majewski wrote:
Hi Stephen,
I'm writing to you, since I've posted a patch series regarding GPT support for Samsung Trats board (you were on the CC).
e.g. http://patchwork.ozlabs.org/patch/179785/
I think, that we can cooperate to provide better EFI/GPT support.
In mine implementation the "gpt" command (with several sub commands) has been proposed
- we can discuss if this is a correct way to go.
Moreover, at this patch series a "weak" GUID generator is implemented. For now it is "good enough", since I consider the restoration as an emergency situation.
I think that (perhaps optionally) allowing the user to specify their own UUIDs would be a good idea; whatever was generating the script being executed might have access to a better entropy source.
However,I wonder how can we provide better GUID (and in general random numbers pool) generator for u-boot.
Maybe md5sum command can be used with some running clock (WDT, or system clock from u-boot start up) data to provide better entropy?
If there's a standard way of retrieving wall-clock, MAC address, ... it'd definitely be a good idea to include those entropy sources.