RE: [Gumstix-users] Problem with reboot after flash write with jffs2

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Benny,

Sorry for the delay getting back.

1) No-- the boards are well-behaved during a power ramp start-up.  As I =
recall, you have 2.  Do they
both behave this way?

2) We have not had others report this problem to date.

3) The gumstix management team has wrestled with defining the company as =
an "open source hardware
company" or a "hardware company supporting open source software."   =
Because of the future products
we are planning to release, we concluded that we are the latter.  The =
gumstix business model is to
make general purpose hardware available to open-source developers.  Our =
corollary conclusion was
that our company's value proposition would be jeopardized by releasing =
any "crown jewels".
Therefore, we are not releasing the whole schematic for gumstix boards, =
but will from time-to-time
release portions of the schematic in a fashion that does not jeopardize =
our ability to make really
inexpensive, high-quality, hardware.

Best,

Gordon

> -----Original Message-----
> From: gum...@li...=20
> [mailto:gum...@li...] On Behalf=20
> Of Benny Simonsen
> Sent: Sunday, May 09, 2004 7:36 AM
> To: sa...@gu...
> Cc: gum...@li...
> Subject: RE: [Gumstix-users] Problem with reboot after flash=20
> write with jffs2
>=20
>=20
> Hi Gordon
>=20
> Do you have any answers to the questions below? Does your=20
> boards behave in the same way if you raise the supply voltage=20
> slowly? You know that initially there were errors on my=20
> boards so maybe there is another error which is the cause for=20
> the problems.
>=20
> Are there others who have tried writing the jffs2 without=20
> reset problems after?
>=20
>=20
> Best Regards
> Benny
>=20
>=20
> PS: Is there any news regarding making the schematic public=20
> or a reason to why it should be kept secret for the users? I=20
> know that you in the beginning of April said it would take=20
> from 1 to 8 weeks for Gumstix to decide what should be made=20
> public so Im just curious to hear if there is any news=20
> regarding this issue.
>=20
>=20
>=20
> -----Original Message-----
> From: gum...@li...
> [mailto:gum...@li...]On Behalf=20
> Of Benny Simonsen
> Sent: 4. maj 2004 16:30
> To: gum...@li...
> Subject: Re: [Gumstix-users] Problem with reboot after flash=20
> write with jffs2
>=20
>=20
> Ok the same problem with the new version installed in flash.=20
> Did restart Linux severel times and mounted the jffs2=20
> (mtdblock4) and did make a read of the content. No problem,=20
> but after the first write to the jffs2 the board were unable=20
> to restart.
>=20
> Let me know if its working for you.
>=20
> Thanks
>=20
> Best Regards
> Benny
>=20
>=20
> ----- Original Message -----
> From: "Benny Simonsen" <ben...@ma...>
> To: <gum...@li...>
> Sent: Tuesday, May 04, 2004 11:21 AM
> Subject: Re: [Gumstix-users] Problem with reboot after flash=20
> write with jffs2
>=20
>=20
> > 2) I have always had the power issue. I guess it has=20
> something to do=20
> > with the ramp up of the supply voltage, but Im not sure.=20
> With a board=20
> > where
> only
> > the power is connected I can recreate the problem when I raise the=20
> > voltage slowly. The boards starts to draw current, but it=20
> will newer=20
> > start
> correct.
> > When reset is pressed the current draw will decrease to=20
> ~10mA (lower=20
> > value than normal).
> >
> > Maybe the flash require some kind of reset which won't happen if the
> voltage
> > is raised to slowly?
> >
> > 1) I can read write and delete the flash in u-boot without=20
> problems. I=20
> > can start linux, mount jffs2, reboot without problems. I can start=20
> > linux, mount jffs2, make some writes on the jffs2, but then I can't=20
> > reboot.
> >
> >
> > I will try the new version where its possible to have both a initrd=20
> > and jffs2 in the flash at the same time and see if the=20
> problem still=20
> > occurs after a flash write from Linux I will really appreciate if=20
> > someone could try to raise the supply voltage slowly and see if the=20
> > same "won't start" problem occurs on other boards.
> >
> > Later on I will connect two GPS receivers to the board and compare=20
> > there measurements during a running exercise and at that=20
> time I will=20
> > be happy if the board starts every time (quite hard to=20
> repeat a 20km+=20
> > running exercise just because the board don't start every time ;-)
> >
> > Best Regards
> > Benny
> >
> >
> > ----- Original Message -----
> > From: "Gordon Kruberg" <go...@gu...>
> > To: <gum...@li...>
> > Sent: Tuesday, May 04, 2004 4:01 AM
> > Subject: RE: [Gumstix-users] Problem with reboot after flash write=20
> > with jffs2
> >
> >
> > > Benny,
> > >
> > > It sounds like 2 problems:
> > > 1) what's gong on with the 0x140000 wiping, and
> > > 2) what's going on with power.
> > >
> > > The 0x140000 wiping should not impact u-boot starting up.=20
>  The fact=20
> > > that
> > it does start (even if
> > > occasionally) is evidence that u-boot code is still intact.
> > >
> > > The power thing is something different; also, not seen=20
> before.  Have
> other
> > seen this?  Benny has
> > > gumstix boards, not waysmalls.
> > >
> > > Gordon
> > >
> > > > -----Original Message-----
> > > > From: gum...@li...
> > > > [mailto:gum...@li...] On Behalf Of=20
> > > > Benny Simonsen
> > > > Sent: Monday, May 03, 2004 2:09 PM
> > > > To: sa...@gu...
> > > > Cc: gum...@li...
> > > > Subject: [Gumstix-users] Problem with reboot after flash write=20
> > > > with jffs2
> > > >
> > > >
> > > > Hi
> > > >
> > > > I have created a (almost) empty jffs2 with the following
> > > > command: ./mkfs.jffs2 -r dummy -e 128KiB -o jffs2.dat=20
> dummy is a=20
> > > > subdirectory with a single empty file. On the gumstix=20
> board I have=20
> > > > deleted the area from 0x140000 and after that copyed=20
> the jffs2.dat=20
> > > > file to the same place. When I reboot (with the initrd on a mmc=20
> > > > card) Im able to mount the jffs2 with the command:=20
> mount -t jffs2=20
> > > > /dev/mtdblock3 /mnt
> > > >
> > > > I can read/write and delete files without problems, but if I=20
> > > > perform any write operations I can't reboot. Linux=20
> shuts down, but=20
> > > > u-boot never starts even if I use the reset button. I have to=20
> > > > remove/re-apply  the power severel times until the=20
> board start (as=20
> > > > described in a previous mail I always have this problem when=20
> > > > powering up).
> > > >
> > > > Any idea of what causing this problem?
> > > >
> > > > Best Regards
> > > > Benny
> > > >
> > > > PS: Does anyone get/read the mails send to the list?=20
> After a long=20
> > > > time I get my own posts twice, but maybe i feel I send mails to=20
> > > > /dev/null so if anyone sees the mail I would be happy to get a=20
> > > > reply (you could just tell me how the weather is if you=20
> don't have=20
> > > > any comments to my questions ;-)
> > > >
> > > >
> > > >
> > > >
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> > >
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