No subject

But, when I am booting the system now, its hanging after displaying
the RAM configuration.

I have just begun to trace down on what could be wrong,but it looks
from initial traces to be in flash_init.

Anything I am missing / doing wrong ??

2)  Read somewhere on net, that by deault all sectors are locked after
reboo t ? true ? does J3 Intel strata flash does it also automatically
?

3) Remember to do so after relocation to RAM. :: Can you please help
me to correct place, code path / function to do so ? I am very new to
u-boot.

Regards,
Alfred


On 1/8/06, Wolfgang Denk <wd at denx.de> wrote:
> In message <29f916510601080721vd20b512u819ee9bce7ad1408 at mail.gmail.com> y=
ou wrote:
> >
> > 1) Does u-boot lock the block on which it resides by default ?
>
> Not by default, but you can inplement in your flah  driver  whichever
> features you like.
>
> > I mean the sector /erase block on which u-boot is there, it will be
> > locked using the block lock  bit by default ?
>
> Remember that only few flash chips provide such hardware locking, and
> that some boards implement even other ways  of  write  protection  of
> parts of or of the whole flash device.
>
> > 2) The flash content changing has to work in block sizes erase -
> > modify - write cyecles only ??
>
> No. You can write single bytes (as long as you are only changing  '1'
> bits to '0').
>
> > Reason for all this is that we have few boards on which u-boot is
> > getting corrupted (on flash image corruption itself).
> > And so am wondering even if its a noise issue, how can it first cause
> > an unlock of sector before write.
>
> Normally the flash is  not  hardare  write  protected,  and  if  your
> hardware designer used flash chips which can be corrupted for example
> by  just writing arbitrary data to a sequential address range you may
> easily see such corruption. There is a very good reason why AMD flash
> chips require a specific programming sequence which must  be  written
> in a certain sequence to certain non-consequitive addresses.
>
> Best regards,
>
> Wolfgang Denk
>
> --
> Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
> PoB =3D "Prisoner of Bill" -- those held captive, unwillingly or other-
> wise, by the contemptible Microsoft monopoly.
>          -- Tom Christiansen in <6abo45$3lc$2 at csnews.cs.colorado.edu>
>