Dear Bhavin,
in message [off-list ref] you wrote:
I am using a PM826 card with our own developed carrier extension
board. I have build the ppcboot image. I am booting the image from flash
Please upgrade. PPCBoot is pretty old, and a lot of modifications
have been added lately. Please use a recent version of U-Boot instead
(0.4.7).
and through serial communication SCC and I have configured the correct
serial channel number from our card's schematics. Now, the ppcboot works
but, when I try to write something in flash through ppcboot (either
'loadb' command or 'nm' command) the flash contents are not getting
Neither the "loadb" nor "nm" commands can operate directly on flash
memory. please download to RAM (or modify the RAM contents) and use
the "cp" command to write to flash.
changed. All other functionality of ppcboot works like erase, read, etc.
but all the functionality related to 'write to flash' is not working.
I think all these things are working fine, you are just using them
wrong.
Can any one please suggest me what could be the possible reason??
Read the documentation; see
http://www.denx.de/twiki/bin/view/DULG/Manual
Also, I have one separate program which, I downloaded from somewhere
which does some read/write operation to the PM826 card's flash. Through
that program the writing is working perfect.
It's working perfectly in PPCBoot and U-Boot, too. Just remember that
the command to write to flash is "cp" (and it's variants
"cp.{l|w|b}").
Has it something to do with ppcboot configuration or the addressing mode?
No, it is a user error.
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
Software suppliers are trying to make their software packages more
``user-friendly''. . . . Their best approach, so far, has been to
take all the old brochures, and stamp the words, ``user-friendly'' on
the cover. - Bill Gates
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Hello,
Thanks a bunch for your guidance. It helped a lot. I was able to
download my Linux image to memory and in flash memory after through cp.
But in both the cases when I tried to boot my linux, the setup got
restarted after giving the message
bootm 100000
## Booting image at 00100000 ...
Image Name: 2.4.5-pre1 initrd for
PM826
Created: 2003-09-04 13:43:13
UTC
Image Type: PowerPC Linux Kernel Image
(gz
Data Size: 516901 Bytes = 504 kB = 0
MB
Load Address: 00000000
Entry Point: 0000000c
Verifying Checksum ... OK
Uncompressing Kernel Image ...
Could any one please help me what could be the possible problem as I am
totally new to this area. Or If I can get some pointer on where to look
for this trouble It would be a great help.
Thanks & Regards,
Bhavin Shah
Embedded Engineer
eInfochips Ltd.,
bhavinp@einfochips.com
Wolfgang Denk wrote:
Dear Bhavin,
in message [off-list ref] you wrote:
quoted
I am using a PM826 card with our own developed carrier extension
board. I have build the ppcboot image. I am booting the image from flash
Please upgrade. PPCBoot is pretty old, and a lot of modifications
have been added lately. Please use a recent version of U-Boot instead
(0.4.7).
quoted
and through serial communication SCC and I have configured the correct
serial channel number from our card's schematics. Now, the ppcboot works
but, when I try to write something in flash through ppcboot (either
'loadb' command or 'nm' command) the flash contents are not getting
Neither the "loadb" nor "nm" commands can operate directly on flash
memory. please download to RAM (or modify the RAM contents) and use
the "cp" command to write to flash.
quoted
changed. All other functionality of ppcboot works like erase, read, etc.
but all the functionality related to 'write to flash' is not working.
I think all these things are working fine, you are just using them
wrong.
quoted
Can any one please suggest me what could be the possible reason??
Read the documentation; see
http://www.denx.de/twiki/bin/view/DULG/Manual
quoted
Also, I have one separate program which, I downloaded from somewhere
which does some read/write operation to the PM826 card's flash. Through
that program the writing is working perfect.
It's working perfectly in PPCBoot and U-Boot, too. Just remember that
the command to write to flash is "cp" (and it's variants
"cp.{l|w|b}").
quoted
Has it something to do with ppcboot configuration or the addressing mode?
No, it is a user error.
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
Software suppliers are trying to make their software packages more
``user-friendly''. . . . Their best approach, so far, has been to
take all the old brochures, and stamp the words, ``user-friendly'' on
the cover. - Bill Gates
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/