topic Re: working on Ethernet in i.MX Processors

working on Ethernet

saida — Wed, 03 Apr 2019 19:15:35 GMT

this is saida

i am working on Sabre Smart Device board (i.mx6 dual )

i am doing Ethernet testing, for that i have taken code from SDK and building from licensed armds-5 environment.

the loopback at MAC level is working in RGMII mode.

but its not working at phy level which is setting loop back option in phy zero register.

i am checking receiving of packet by following way

1. i am running code in board side and waiting for a packet and it is running in promicous mode

2. from linux ubuntu pc side i am entering command in hyper terminal is

arping -I eth0 -c 10 10.0.0.2

but i am not receiving any packet

what could be the problem ?

please any one can help in this regard it is urgent

other wise if any one have standalone bare metal code for ethernet testing,

one can send it to me

thanks and reagrds

Saida Safavath

Re: working on Ethernet

igorpadykov — Wed, 03 Apr 2019 23:27:54 GMT

Hi Saida

yes unfortunately baremetal sdk has issues with ethernet driver (known issue),

may be recommended to use uboot codes:

uboot-imx - i.MX U-Boot

Best regards
igor
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Re: working on Ethernet

saida — Thu, 04 Apr 2019 10:39:10 GMT

Hi igorpadykov

Yes as i expected you only respond immediately, thanks for your reply.

but the test procedure what i am doing is correct or not

if it is not correct can you give me some guideline how to test step by step the extracted ethernet driver from u-boot

i thought that if i sent arping command from linux pc, the driver should receive the message so that i can confirm at least receive is working

i am also trying to send arp packet and capturing in wireshark ? (to confirm sending part)

please if possible give your valuable suggestions

thanks and regards

Saida

Re: working on Ethernet

igorpadykov — Thu, 04 Apr 2019 11:55:04 GMT

Hi Saida

uboot fec driver can be found on

fec_mxc.c\net\drivers - uboot-imx - i.MX U-Boot

also may be useful to look at enet drivers in SDK for i.MX Cortex-M on

i.MX Software | NXP

Best regards
igor

Re: working on Ethernet

saida — Fri, 05 Apr 2019 07:50:08 GMT

Hi igorpadykov

i will try it and come back to you

thanks

saida

Re: working on Ethernet

saida — Wed, 17 Apr 2019 07:54:10 GMT

igorpadykov

i am working with fec driver in u-boot

i am unable to ping in u-boot

my ip(custom board) is 10.0.0.8 and host side is 10.0.0.6

i am capturing packets with tcpdump

its looks like u-boot is able to send packets but not receiving the packets

tcpdump results are: for ping 10.0.0.6

"request who has 10.0.0.6 tell to 10.0.0.8" 48 bytes

"reply 10.0.0.6 is at 00:1c:11:1:3:4 with some mac address" 28 bytes

from this i confirmed that packet is sending properly but not receiving

i think there is problem on hardware side ?

how can i solve this receiving part in hardware

is there any signal to verifr this in hardware

thanks and regards

Saida

Re: working on Ethernet

igorpadykov — Wed, 17 Apr 2019 23:27:02 GMT

Hi Saida

yes for uboot this may be correct behaviour, please check :
[U-Boot] Q on expected u-boot behavior on ping response

Best regards
igor

Re: working on Ethernet

saida — Thu, 18 Apr 2019 05:35:23 GMT

hi igorpadykov

may be i am not conveyed message properly

i am doing ping in u-boot only

this is working on sabresd board which i purchased

but the custom board which i have designed is not working for ping command

for that i have checked with tcpdump, packed is transmitted but not receiving the packet

i have verified signals RX_DV and RX_CLK with scope these are coming like sine waves

still i am not understanding why packet is not received

thanks and regards

Saida

Re: working on Ethernet

igorpadykov — Thu, 18 Apr 2019 05:48:21 GMT

as described on suggested link:

"u-boot only starts the network driver when it

needs to use it (i.e. to send a ping or download something over tftp).

After it has finished the network driver is stopped. Any traffic on

the network will be ignored if u-boot isn't actively trying to perform a network operation, even if it is addressed to the device."

Re: working on Ethernet

saida — Fri, 19 Apr 2019 01:25:50 GMT

it is working on i.mx6 sabre board why not my custom board

regards and thanks

saida