Bad data CRC problem after i restart the OSK 5912

Bad data CRC problem after i restart the OSK 5912

[prafulla chandra vejendla]

Hi all,
i am using u-boot 1.1.1 with linux2.6.11.3 i made an uimage.cc of 1143783
bytes (nearly 1.1MB) with out any error by following new-bie guide for my
osk 5912 board i downloaded that through  the hyperterminal by using the
kermit protocol . once i restarted the board or if i use
 bootm 0x100000 it is giving verifying checksum....... Bad Data CRC. and
remained in the uboot prompt only.
why i am getting this error .where will be the problem.whether that kernal
and u-boot combination that i have choosen is correct or not.
please clear my doubt
thanks in advance
--prafulla chandra.

Re: Bad data CRC problem after i restart the OSK 5912

[Tony Lindgren]

* prafulla chandra vejendla <v.prafulla@gmail.com> [060302 22:53]:
> Hi all,
> i am using u-boot 1.1.1 with linux2.6.11.3 i made an uimage.cc of 1143783
> bytes (nearly 1.1MB) with out any error by following new-bie guide for my
> osk 5912 board i downloaded that through  the hyperterminal by using the
> kermit protocol . once i restarted the board or if i use
>  bootm 0x100000 it is giving verifying checksum....... Bad Data CRC. and
> remained in the uboot prompt only.
> why i am getting this error .where will be the problem.whether that kernal
> and u-boot combination that i have choosen is correct or not.
> please clear my doubt

Probably bad memory timings set in the bootloader.

Tony

RE: Bad data CRC problem after i restart the OSK 5912

[Hunter, Jon]

> -----Original Message-----
> From: linux-omap-open-source-bounces@linux.omap.com
[mailto:linux-omap-
> open-source-bounces@linux.omap.com] On Behalf Of Tony Lindgren
> Sent: Friday, March 03, 2006 1:05 PM
> To: prafulla chandra vejendla
> Cc: linux-omap-open-source@linux.omap.com
> Subject: Re: Bad data CRC problem after i restart the OSK 5912
> 
> * prafulla chandra vejendla <v.prafulla@gmail.com> [060302 22:53]:
> > Hi all,
> > i am using u-boot 1.1.1 with linux2.6.11.3 i made an uimage.cc of
> 1143783
> > bytes (nearly 1.1MB) with out any error by following new-bie guide
for
> my
> > osk 5912 board i downloaded that through  the hyperterminal by using
the
> > kermit protocol . once i restarted the board or if i use
> >  bootm 0x100000 it is giving verifying checksum....... Bad Data CRC.
and
> > remained in the uboot prompt only.
> > why i am getting this error .where will be the problem.whether that
> kernal
> > and u-boot combination that i have choosen is correct or not.
> > please clear my doubt
> 
> Probably bad memory timings set in the bootloader.
> 
> Tony

I have seen such problems on occasion too. I would try downloading the
kernel again and before you program it into the flash use the uboot
"imi" command to validate that the image was downloaded correctly. When
using the "imi" you need to pass the address where the kernel was
downloaded to. More info here:
http://www.denx.de/wiki/view/DULG/UBootCmdGroupInfo#Section_5.9.1.4.

Also once you program the kernel into flash you can use the "imi"
command again to verify that it was programmed correctly. If you
accidently programmed a size smaller than the actual image size into
flash when using the "cp.b" command you may see this issue too.

Jon

Bad data CRC problem after i restart the OSK 5912

[prafulla chandra vejendla]

 Hi
i verified both before and after downloading into flash using imi 0x10000000
and imi 0x100000 for before and after the download .in both cases programmed
size is same and it is also indicating that the verifying
checksum ........o.k ..... in both cases .but once i boot up using bootm
0x100000
it is giving the same previous error BAD DATA CRC.
then where could be the problem ??
i am doubting the combination i have choosed
i am using mkimage tool present in the u-boot 1.1.1 with gcc-3.4.1 for linux
2.6.11.3 with the same rc3 patch . is this the valid combination ??
is there any conflicts between uboot1.1.1 and linux 2.6.11.3 ??
whether uboot 1.1.1 will support linux2.6.11.3 or not ??




On 3/4/06, Hunter, Jon <jon-hunter@ti.com> wrote:
>
> > -----Original Message-----
> > From: linux-omap-open-source-bounces@linux.omap.com
> [mailto:linux-omap-
> > open-source-bounces@linux.omap.com] On Behalf Of Tony Lindgren
> > Sent: Friday, March 03, 2006 1:05 PM
> > To: prafulla chandra vejendla
> > Cc: linux-omap-open-source@linux.omap.com
> > Subject: Re: Bad data CRC problem after i restart the OSK 5912
> >
> > * prafulla chandra vejendla <v.prafulla@gmail.com> [060302 22:53]:
> > > Hi all,
> > > i am using u-boot 1.1.1 with linux2.6.11.3 i made an uimage.cc of
> > 1143783
> > > bytes (nearly 1.1MB) with out any error by following new-bie guide
> for
> > my
> > > osk 5912 board i downloaded that through  the hyperterminal by using
> the
> > > kermit protocol . once i restarted the board or if i use
> > >  bootm 0x100000 it is giving verifying checksum....... Bad Data CRC.
> and
> > > remained in the uboot prompt only.
> > > why i am getting this error .where will be the problem.whether that
> > kernal
> > > and u-boot combination that i have choosen is correct or not.
> > > please clear my doubt
> >
> > Probably bad memory timings set in the bootloader.
> >
> > Tony
>
> I have seen such problems on occasion too. I would try downloading the
> kernel again and before you program it into the flash use the uboot
> "imi" command to validate that the image was downloaded correctly. When
> using the "imi" you need to pass the address where the kernel was
> downloaded to. More info here:
> http://www.denx.de/wiki/view/DULG/UBootCmdGroupInfo#Section_5.9.1.4.
>
> Also once you program the kernel into flash you can use the "imi"
> command again to verify that it was programmed correctly. If you
> accidently programmed a size smaller than the actual image size into
> flash when using the "cp.b" command you may see this issue too.
>
> Jon
>