Re: [Gumstix-users] 400m board

[Craig H. <cr...@gu...>]

It's also important to note that even if you erase enough flash to  
put your new root fs in so that u-boot won't complain that you're  
writing to non-blank flash, if there are unerased sectors "high" in  
flash, then you'll have problems in linux, where the JFFS2 filesystem  
will get confused when it sees that there's stuff in those high  
sectors, which don't correspond to what the root_fs thinks is there.   
Anyways, just always erase all of flash before writing a new root_fs  
in u-boot:

GUM> protect on 1:0-1 && erase all

or if you have one of the latest u-boots from buildroot which include  
the "jerase" command:

GUM> protect on 1:0-1 && jerase all

The latter command will cut down your first-boot time substantially,  
since JFFS2 won't have to scan all of flash and put its little sector  
header in each flash sector.

C

On Oct 25, 2005, at 7:16 PM, Frank wrote:

> Got it, thanks...
>
> --- Dave Hylands <dhy...@gm...> wrote:
>
>
>> Hi Frank,
>>
>> On 10/25/05, Frank <fra...@ya...> wrote:
>>
>>> Interesting,
>>> I'm only eraseing sectors 1-31 and it works. I guess because
>>> each sector is 128kb and ny roootfs is about 3.6mB...
>>>
>>
>> Yeah - once you get beyond 3.875 Mb then you'd get write
>> failures in u-boot.
>>
>> --
>> Dave Hylands
>> Vancouver, BC, Canada
>> http://www.DaveHylands.com/
>>
>>
>> -------------------------------------------------------
>> This SF.Net email is sponsored by the JBoss Inc.
>> Get Certified Today * Register for a JBoss Training Course
>> Free Certification Exam for All Training Attendees Through End
>> of 2005
>> Visit http://www.jboss.com/services/certification for more
>> information
>> _______________________________________________
>> gumstix-users mailing list
>> gum...@li...
>> https://lists.sourceforge.net/lists/listinfo/gumstix-users
>>
>>
>
>
>
>
> __________________________________
> Yahoo! FareChase: Search multiple travel sites in one click.
> http://farechase.yahoo.com
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by the JBoss Inc.
> Get Certified Today * Register for a JBoss Training Course
> Free Certification Exam for All Training Attendees Through End of 2005
> Visit http://www.jboss.com/services/certification for more information
> _______________________________________________
> gumstix-users mailing list
> gum...@li...
> https://lists.sourceforge.net/lists/listinfo/gumstix-users
>