EP8260

EP8260

[deepesh]

Hi,

  I loaded my EP8260 board with UBOOT. This was working fine. Then I loaded a
binary into RAM using tftp. Then tried copying the stuff to flash. When I could
not copy things into flash directly, I erased a few sectors randomly and then
copied the binary to flash. Then when I reset the board, it did not come up.

I put back the u-boot into the flash using BDI2000. But now I am getting weird
characters on the screen. I have looked at the minicom settings-- It is 115200
and 8N1. These were the settings with which I was working before also. What I am
not able to understand is the reason for the weird characters.

I am attaching the weird character file. The last line seems to be the U-BOOT
prompt. I tried changing the TERMINAL SETTINGS to ANSI from VT100, but it did
not help.
------------------------------------------------------------------------
?åêáó`*m,ïïô`0nsnp`hSõì rr`r0ps`m@qrzs2zrvi

??fxrv0`?åóåô`?ôáôõóz@?øôåòîáì`?ïæôl ?øôåòîáì`Èáòä

??fxrvp fìïãë`fïîæéçõòáôéïî
`m`,õómôïmfïòå`?õìô`snuøl`-f?`?éö rl`v0ø`,õó`?òåñ``sp-xu`l fïòå ?òåñ qppm3pp
`m`äæâòç`q,`ãïòåãîæ`0øqål`âõóäæ`rl`ãðíäæ`ql`ðììäæ`ql`ðììíæ`r
`m`öãïYïõô``qyxppp0ppl`óããYãìë```tyupppppl`âòçYãìë```1rswup0p
`m`ãðõYãìë` rsqpppppp,`ãðíYãìë`@`yyp0ppppL`âõóYãìë```vvp0pppp

f?*z`` ??fxrvp`h?åö`q4l`?áóë`?n0h?i`r<ru?)`áô`2sq`?Èú
,ïáòäz ?íâåääåä`?ìáîåô`??x2vpl`?åöéóéïî`p.p
?2fz`` òåáäù
????z `vt`?,
????^:`qv ?,
jjj`-áòîéîç`m`âáä`f?fl`õóéîç`äåæáõìô`åîöéòïîíåîô

?îz` ``óåòéáì
?õôz ``óåòéáì
?òòz ``óåòéáì
?Åôz```?ffs`??^?????
,??,*?zòåÁäù
}~`
--------------------------------------------------------------------------

Thank you,
Deepesh

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Re: EP8260

[Wolfgang Denk]

In message <1058882554.3f1d43faafee2@pop-mail.india.tejasnetworks.com> you wrote:
>
>   I loaded my EP8260 board with UBOOT. This was working fine. Then I loaded a

First I would like to point out (like many times before) that  U-Boot
related  questions  are  off-topic  on  a  linuxppc-dev mailing list.
Please post such questions to the u-boot-users list.

> binary into RAM using tftp. Then tried copying the stuff to flash. When I could
> not copy things into flash directly, I erased a few sectors randomly and then
> copied the binary to flash. Then when I reset the board, it did not come up.

One of my teachers used to say that some people only  learn  when  it
hurts really bad.

I hope you understand that you should have  investigates  _why_  yuou
could  not  copy your image to flash. Thi is supposed to work, and if
it fails it usually means that you made  something  wrong.  Analyzing
the  error  and  understanding _what_ you did wrong is very important
for you to avoid the same error in the future.

Well, and "erasing a few sectors randomly" is such a bad idea that  I
better keep my mouth shut.


> I put back the u-boot into the flash using BDI2000. But now I am getting weird
> characters on the screen. I have looked at the minicom settings-- It is 115200
> and 8N1. These were the settings with which I was working before also. What I am
> not able to understand is the reason for the weird characters.

Probably you overwrote more than you think.

Restart from scratch: erase the _whole_  flash  memory,  and  install
_only_ U-Boot. Then power-cycle the board. Then check again.


And never ever erase "random sectors" again.

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
"When anyone says `theoretically,' they really mean `not really.'"
- David Parnas

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Re: EP8260

[Jerry Van Baren]

a) What Wolfgang said :-).

b) What does your EP8260 config file have in it for CONFIG_BAUDRATE?  Did
you override it in the environmental variables and inadvertently switch to
a different baud rate?  Did you try different baud rates with minicom to
see if you could find the one the EP8260 is using?

ANSI vs. VT100 isn't going to do much for you (that is escape
sequences).  It looks like a baud rate mismatch.  It might be 7 bit vs. 8
bit or parity, but not likely.


gvb


At 07:32 AM 7/22/2003 +0530, deepesh@india.tejasnetworks.com wrote:

>Hi,
>
>   I loaded my EP8260 board with UBOOT. This was working fine. Then I loaded a
>binary into RAM using tftp. Then tried copying the stuff to flash. When I
>could
>not copy things into flash directly, I erased a few sectors randomly and then
>copied the binary to flash. Then when I reset the board, it did not come up.
>
>I put back the u-boot into the flash using BDI2000. But now I am getting weird
>characters on the screen. I have looked at the minicom settings-- It is 115200
>and 8N1. These were the settings with which I was working before also.
>What I am
>not able to understand is the reason for the weird characters.
>
>I am attaching the weird character file. The last line seems to be the U-BOOT
>prompt. I tried changing the TERMINAL SETTINGS to ANSI from VT100, but it did
>not help.
>------------------------------------------------------------------------
>?åêáó`*m,ïïô`0nsnp`hSõì rr`r0ps`m@qrzs2zrvi
>
>??fxrv0`?åóåô`?ôáôõóz@?øôåòîáì`?ïæôl ?øôåòîáì`Èáòä
>
>??fxrvp fìïãë`fïîæéçõòáôéïî
>`m`,õómôïmfïòå`?õìô`snuøl`-f?`?éö rl`v0ø`,õó`?òåñ``sp-xu`l fïòå ?òåñ qppm3pp
>`m`äæâòç`q,`ãïòåãîæ`0øqål`âõóäæ`rl`ãðíäæ`ql`ðììäæ`ql`ðììíæ`r
>`m`öãïYïõô``qyxppp0ppl`óããYãìë```tyupppppl`âòçYãìë```1rswup0p
>`m`ãðõYãìë` rsqpppppp,`ãðíYãìë`@`yyp0ppppL`âõóYãìë```vvp0pppp
>
>f?*z`` ??fxrvp`h?åö`q4l`?áóë`?n0h?i`r<ru?)`áô`2sq`?Èú
>,ïáòäz ?íâåääåä`?ìáîåô`??x2vpl`?åöéóéïî`p.p
>?2fz`` òåáäù
>????z `vt`?,
>????^:`qv ?,
>jjj`-áòîéîç`m`âáä`f?fl`õóéîç`äåæáõìô`åîöéòïîíåîô
>
>?îz` ``óåòéáì
>?õôz ``óåòéáì
>?òòz ``óåòéáì
>?Åôz```?ffs`??^?????
>,??,*?zòåÁäù
>}~`
>--------------------------------------------------------------------------
>
>Thank you,
>Deepesh
>


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

EP8260

[deepesh]

Hi,

  I am having an EP8260 Board. The board comes with a PlanetCore BootLoader
and a diagnostics. I want to boot kernel using this bootloader. TimeSys
people claim to have released a kernel binary for EP8260. I am not able to
boot this kernel. What is clear is that the board info structure is passed
correctly from the planetcore boot loader to the kernel arch/ppc/boot/.
This is because I found that the decompress_kernel function is working. I
dumped the first few bytes of memory, starting at 0(zero). They are exactly
same as the "dissembled vmlinux".

   But there is a problem in entering from the arch/ppc/boot code to
arch/ppc/kernel code. The board goes for a reset.

Kindly help.

Please  give me a reference to a kernel which would come up with this
bootloader(PlanetCore)

Thank you,
Deepesh

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Re: EP8260

[Steven Blakeslee]

Was one of the sectors you erased the first sector?  If so that is your
problem, the hard reset word is located in the beginning of the first
sector.  To fix this you need to do the following.

1. There is a resistor that is removed from the board at location RO2.  This
resistor sets the default hard reset word.  You have to put a 0ohm resistor
at this location, a solder glob will also work.
2. Download the Planet Core FLASH burner and execute it.  Give the command
hrw to reburn the hard reset word.  If the processor is 233MHz or higher
give the command hrw h.
3. Remove the 0ohm resistor(or solder glob) at RO2.

-----Original Message-----
From: deepesh@india.tejasnetworks.com
Sent: Tuesday, July 22, 2003 3:33 AM
Subject: EP8260

  I loaded my EP8260 board with UBOOT. This was working fine. Then I
loaded a binary into RAM using tftp. Then tried copying the stuff to
flash. When I could not copy things into flash directly, I erased a few
sectors randomly and then copied the binary to flash. Then when I reset
the board, it did not come up.

I put back the u-boot into the flash using BDI2000. But now I am getting
weird characters on the screen. I have looked at the minicom settings--
It is 115200 and 8N1. These were the settings with which I was working
before also. What I am not able to understand is the reason for the
weird characters.

I am attaching the weird character file. The last line seems to be the
U-BOOT prompt. I tried changing the TERMINAL SETTINGS to ANSI from
VT100, but it did not help.
------------------------------------------------------------------------
?åêáó`*m,ïïô`0nsnp`hSõì rr`r0ps`m@qrzs2zrvi

??fxrv0`?åóåô`?ôáôõóz@?øôåòîáì`?ïæôl ?øôåòîáì`Èáòä

??fxrvp fìïãë`fïîæéçõòáôéïî
`m`,õómôïmfïòå`?õìô`snuøl`-f?`?éö rl`v0ø`,õó`?òåñ``sp-xu`l fïòå ?òåñ qppm3pp
`m`äæâòç`q,`ãïòåãîæ`0øqål`âõóäæ`rl`ãðíäæ`ql`ðììäæ`ql`ðììíæ`r
`m`öãïYïõô``qyxppp0ppl`óããYãìë```tyupppppl`âòçYãìë```1rswup0p
`m`ãðõYãìë` rsqpppppp,`ãðíYãìë`@`yyp0ppppL`âõóYãìë```vvp0pppp

f?*z`` ??fxrvp`h?åö`q4l`?áóë`?n0h?i`r<ru?)`áô`2sq`?Èú
,ïáòäz ?íâåääåä`?ìáîåô`??x2vpl`?åöéóéïî`p.p
?2fz`` òåáäù
????z `vt`?,
????^:`qv ?,
jjj`-áòîéîç`m`âáä`f?fl`õóéîç`äåæáõìô`åîöéòïîíåîô

?îz` ``óåòéáì
?õôz ``óåòéáì
?òòz ``óåòéáì
?Åôz```?ffs`??^?????
,??,*?zòåÁäù
}~`
--------------------------------------------------------------------------

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

RE: EP8260

[deepesh]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: TEXT/PLAIN; charset=X-UNKNOWN, Size: 2714 bytes --]


Hi,

  I checked the first sector, and I see the Hard Reset Configuration
Word. I think there is some other problem.

Deepesh

On Tue, 22 Jul 2003, Steven Blakeslee wrote:

> Was one of the sectors you erased the first sector? If so that is your
> problem, the hard reset word is located in the beginning of the first
> sector. To fix this you need to do the following.
>
> 1. There is a resistor that is removed from the board at location RO2.
> This resistor sets the default hard reset word. You have to put a 0ohm
> resistor at this location, a solder glob will also work.
> 2. Download the Planet Core FLASH burner and execute it. Give the
> command hrw to reburn the hard reset word. If the processor is 233MHz
> or higher give the command hrw h.
> 3. Remove the 0ohm resistor(or solder glob) at RO2.
>
> -----Original Message-----
> From: deepesh@india.tejasnetworks.com
> Sent: Tuesday, July 22, 2003 3:33 AM
> Subject: EP8260
>
>   I loaded my EP8260 board with UBOOT. This was working fine. Then I
> loaded a binary into RAM using tftp. Then tried copying the stuff to
> flash. When I could not copy things into flash directly, I erased a
> few sectors randomly and then copied the binary to flash. Then when I
> reset the board, it did not come up.
>
> I put back the u-boot into the flash using BDI2000. But now I am
> getting weird characters on the screen. I have looked at the minicom
> settings-- It is 115200 and 8N1. These were the settings with which
> I was working before also. What I am not able to understand is the
> reason for the weird characters.
>
> I am attaching the weird character file. The last line seems to be the
> U-BOOT prompt. I tried changing the TERMINAL SETTINGS to ANSI from
> VT100, but it did not help.
> ------------------------------------------------------------------------
> ?åêáó`*m,ïïô`0nsnp`hSõì rr`r0ps`m@qrzs2zrvi
>
> ??fxrv0`?åóåô`?ôáôõóz@?øôåòîáì`?ïæôl ?øôåòîáì`Èáòä
>
> ??fxrvp fìïãë`fïîæéçõòáôéïî
> `m`,õómôïmfïòå`?õìô`snuøl`-f?`?éö rl`v0ø`,õó`?òåñ``sp-xu`l fïòå ?òåñ qppm3pp
> `m`äæâòç`q,`ãïòåãîæ`0øqål`âõóäæ`rl`ãðíäæ`ql`ðììäæ`ql`ðììíæ`r
> `m`öãïYïõô``qyxppp0ppl`óããYãìë```tyupppppl`âòçYãìë```1rswup0p
> `m`ãðõYãìë` rsqpppppp,`ãðíYãìë`@`yyp0ppppL`âõóYãìë```vvp0pppp
>
> f?*z`` ??fxrvp`h?åö`q4l`?áóë`?n0h?i`r<ru?)`áô`2sq`?Èú
> ,ïáòäz ?íâåääåä`?ìáîåô`??x2vpl`?åöéóéïî`p.p
> ?2fz`` òåáäù
> ????z `vt`?,
> ????^:`qv ?,
> jjj`-áòîéîç`m`âáä`f?fl`õóéîç`äåæáõìô`åîöéòïîíåîô
>
> ?îz` ``óåòéáì
> ?õôz ``óåòéáì
> ?òòz ``óåòéáì
> ?Åôz```?ffs`??^?????
> ,??,*?zòåÁäù
> }~`
> --------------------------------------------------------------------------

--

D.Deepesh
R&D Engineer,
Tejas Networks

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/