topic Enabling Ethernet in SABRE SDB in i.MX Processors

Enabling Ethernet in SABRE SDB

vishvapathi — Fri, 05 Jul 2013 06:23:17 GMT

Hi,

I have booted my imx6 SABRE SDB evk from the sd card with Linux version 3.0.35-2508. The eth0 is not working . the light of eth0 blinks periodically

root@freescale /$ ifconfig -a

eth0 Link encap:Ethernet HWaddr 00:04:9F:02:6C:A6

BROADCAST MULTICAST MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

lo Link encap:Local Loopback

LOOPBACK MTU:16436 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

Re: Enabling Ethernet in SABRE SDB

weidong_sun — Fri, 05 Jul 2013 08:39:40 GMT

Hello,Vishvapathi,

It seems that ethernet didn't get IP address. Did you add ip=dhcp in bootargs of u-boot environment ?

Regards,

Weidong

Re: Enabling Ethernet in SABRE SDB

vishvapathi — Fri, 05 Jul 2013 09:01:33 GMT

Hi Weidong,

Yes, i did set tht.. below is my env setting

MX6Q SABRESD U-Boot > printenv

bootdelay=3

baudrate=115200

ipaddr=192.168.1.103

serverip=192.168.1.101

netmask=255.255.255.0

loadaddr=0x10800000

rd_loadaddr=(0x1300000)

netdev=eth0

ethprime=FEC0

uboot=u-boot.bin

kernel=uImage

nfsroot=/opt/eldk/arm

bootargs_nfs=setenv bootargs ${bootargs} root=/dev/nfs ip=dhcp nfsroot=${serverp

bootcmd_net=run bootargs_base bootargs_nfs; tftpboot ${loadaddr} ${kernel}; boom

ethact=FEC0

bootargs_mmc=setenv bootargs ${bootargs} root=/dev/mmcblk1p1 rootwait rw init=/t

bootargs_base=console=ttymxc0,115200

bootargs=console=ttymxc0,115200 setenv bootargs ${bootargs} root=/dev/mmcblk1p1t

bootcmd_mmc=mmc dev 2;mmc read ${loadaddr} 0x800 0x2000;bootm

bootcmd=run bootcmd_mmc

stdin=serial

stdout=serial

stderr=serial

bootargs_base_mmc=root=/dev/mmcb1k1p1 rootfstype=ext3 rootwait rw ip=dhcp

root@freescale ~$ ifconfig eth0 up

eth0: Freescale FEC PHY driver [Generic PHY] (mii_bus:phy_addr=1:01, irq=-1)

root@freescale ~$ PHY: 1:01 - Link is Up - 100/Full

root@freescale ~$ ifconfig -a

eth0 Link encap:Ethernet HWaddr 00:04:9F:02:6C:A6

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:10 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:640 (640.0 b) TX bytes:0 (0.0 b)

lo Link encap:Local Loopback

LOOPBACK MTU:16436 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

Re: Enabling Ethernet in SABRE SDB

vishvapathi — Mon, 08 Jul 2013 05:59:01 GMT

The linux kernel was without ethernet. Activated by:

ipconfig eth0 up // to load the FEC driver

udhcpc // to obtain the IP address via DHCP when required.

and it works now..

thanks

Re: Enabling Ethernet in SABRE SDB

weidong_sun — Mon, 08 Jul 2013 06:05:42 GMT

Hello,Vishvapathi,

Would you like to try the following settings in u-boot environment ?

setenv bootargs_base console=ttymxc0,115200

setenv bootargs_mmc 'setenv bootargs ${bootargs_base} root=/dev/mmcblk1p1 rootfstype=ext3 rootwait rw ip=dhcp'

setenv bootcmd_mmc 'run bootargs_mmc;mmc dev 2;mmc read ${loadaddr} 0x800 0x2000;bootm'

Regards,

Weidong

Re: Enabling Ethernet in SABRE SDB

weidong_sun — Mon, 08 Jul 2013 06:07:49 GMT

Hi,Vishvapathi,

you forgot to select FEC driver ! :smileyhappy:

weidong

Re: Enabling Ethernet in SABRE SDB

vishvapathi — Mon, 08 Jul 2013 06:09:39 GMT

Hi Weidong,

After giving udhcpc command eth0 was enabled and now i am able to ping the server.

Thanks for your support

Re: Enabling Ethernet in SABRE SDB

weidong_sun — Mon, 08 Jul 2013 06:12:20 GMT

OK, Good Job !