[U-Boot] ping failed; host 192.168.1.101 is not alive

[akdas75]

Hi Anatolij  and Wolfgang Denk

I have solved the problem.
There are some "must" changes in omap3_spi.c to make it working. Otherwise
it will not be
behave in the expected way.
There are also few changes in enc28j60.c file to make it more stable.
I have attached the snapshot of both ping and tftp.

Please let me know if I can submit the changes as patch because they are
required
for proper working of the omap3 SPI.
http://old.nabble.com/file/p34659079/ping_success.cap ping_success.cap  

Ajoy
 



akdas75 wrote:
> 
> Hi 
> 
> I analyzed the code and put some prints to find the below mentioned
> behavior.
> The ARP packet is being received by ENC28J60 but when it reaches the
> software pkt format is not correct.
> A 0 is being appended to the packet.
> 
> After analysis I found this errata mentioned in ENC28J60  errata sheet is
> not applied for the initial case
> (for the first packet). Later on it is fine.
> I have made the changes and I need to test it today night after office.
> 
> Module: Memory (Ethernet Buffer) The receive hardware may corrupt the
> circular
> receive buffer (including the Next Packet Pointer and receive status
> vector fields) when an even value
> is programmed into the ERXRDPTH:ERXRDPTL registers.
> Work around
> Ensure that only odd addresses are written to the ERXRDPT registers.
> Assuming that ERXND contains
> an odd value, many applications can derive a suitable value to write to
> ERXRDPT by subtracting
> one from the Next Packet Pointer (a value always ensured to be even
> because of hardware padding)
> and then compensating for a potential ERXST to ERXND wraparound. Assuming
> that the receive
> buffer area does not span the 1FFFh to 0000h memory boundary, the logic in
> Example 1 will ensure that
> ERXRDPT is programmed with an odd value
> 
> Are you aware of any such change required in the ENC28J60  uboot code. 
> Kindly let me know if anybody has faced such issue
> 
> 
> akdas75 wrote:
>> 
>> Hi 
>> 
>> As per your suggestion I tried 2012.10 
>> Still the result is same. But it shows receive length is zero.
>> 
>> I have attached the logs
>> I have attached the changes to make ethernet work.
>> 
>> As I am new to this forum I hope you said me to reply to this mailing
>> list.
>> 
>> Ajoy http://old.nabble.com/file/p34620403/uboot.txt uboot.txt 
>> http://old.nabble.com/file/p34620403/uboot.patch uboot.patch 
>> 
>> 
>> 
>> akdas75 wrote:
>>> 
>>> hi 
>>> 
>>> No I dont have any firewall running.
>>> I have enabled to receive all packets []
>>> 
>>> i am using the uboot version 2011.03 with the following changes.
>>> But i think it will not affect the ping functionality.
>>> 
>>> Any help. I will try putting more logs and pointing the issue.
>>> 
>>> attached is the patch
>>> 
>>> Ajoy
>>> 
>>> 
>>> 
>>> akdas75 wrote:
>>>> 
>>>> hi Anatolij
>>>> I tried  your suggestion 
>>>> I generate a macid from uboot/tools/gen_eth_addr.
>>>> Still the ping says "host not alive"
>>>> 
>>>> I have attached the uboot log
>>>> and also the wireshark snapshot on the host
>>>> 
>>>> host : 192.168.1.101
>>>> development board : 192.168.1.100
>>>> 
>>>> Ajoy
>>>>  http://old.nabble.com/file/p34610904/uboot_log_1.txt uboot_log_1.txt 
>>>> http://old.nabble.com/file/p34610904/snap_wireshark_host.JPG
>>>> snap_wireshark_host.JPG 
>>>> 
>>>> akdas75 wrote:
>>>>> 
>>>>> Hi http://old.nabble.com/file/p34608548/uboot-log.rtf uboot-log.rtf 
>>>>> 
>>>>> I am using beagle board C4 with zippy expansion board.
>>>>> I am able to do NFS at the kernel level.
>>>>> I want to o tftp at the u-boot level.
>>>>> my beagle board is connected to the host via  cross ethernet cable.
>>>>> the phy chip is enc28j60. 
>>>>> when i ping  the host it says host not alive.
>>>>> 
>>>>> i have attached the env variables
>>>>> 
>>>>> please help
>>>>> 
>>>>> 
>>>> 
>>>> 
>>>  http://old.nabble.com/file/p34615656/u-boot.patch u-boot.patch 
>>> 
>> 
>> 
> 
> 

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