problem with PowerPC 8260

That are two completely different worlds: Linux is an operating system providing a multitasking/multiuser environment. UBoot is a bootloader. So normally you need UBoot to run Linux;

- What FTP/SFTP/FTPS server are you using?

- How much memory (RAM) is available on the system and how much is the maximum /dev/shm might get?

- Do you use a Linux distribution, such as ELDK from Denx?

- ...

it

So

thanks for the reply ... the board have 128 Mbyte of SDRAM , Iam using 16Mhbyte for RAMDISK fil system , then I have a tmpfs set up in dev/shm with about 63Mbyte ... Iam using linux kernel 2.4.24 downloaded from kernel.org and this i configured and compiled to work in our custom board. let us put my question in a different way...tftp in U-boot and Linux ar using same hardware so why in U-boot it is working but when kernel i running it is failing ..I found in one website they are talking that tft in U-boot is polling based but in linux kernel is Interrupt driven ... bu I dont have an idea what might be going wrong .. Thanks

Ok. Have you verified that your custom board is working? (from the hardware point of view) - is it sending and receiving network messages (single and simple messages)? If Linux's access to the network chip is interrupt driven, do you "see" interrupts in /proc/interrupts and/or with a scope?

Btw. It depends on the driver if the access to your network chip is polling or interrupt based.

hardware

and

polling

-from hardware point of view I would say the board is Ok. -yes there is network activities like when I ping the port even when th linux is running , it work just fine... it only fails in FTP or SFTP -my netwrok chip doesnt use external INT into the PowerPC , but what mean bu INT is the internal CPM interrupt that is generated when a buffe discriptor is received , or an error is occured..

Then it seems that also networking performs good - you could try to run a "flood ping" to target.

Then some network capability is built into the powerpc and there is only a PHY outside. So you should also see some counting in /proc/interrupts.

Now we are again at the point where the FTP software on PPC becomes interesting: which software do you use on PPC for FTP?

the

buffer

I tried to flood ping the ethernet port with the command ping -c100 -s8192 -f Ipaddr and it worked just fine no errors then I used sftp root@Ipaddr when I tried to upload the a 1Mbye file failed again..and it doesnt jus fail but all linux kernel crash ..and u cant recover unless u restart.. how do I check what type of FTP or SFTP iam running ... I know my file system is from BusyBox I think ... thanks

I don't think that busybox integrates a SFTP/FTP server. Busybox does not offer even a sftp utility. But at that point we should forward to comp.os.linux.embedded cause that is definitely a linux issue.