2010-01-25 04:49:07 Network works with uBoot but not with uClinux

Mike Bunke (GERMANY)

Message: 85082

When running uBoot DHCP and PING works fine, but with uClinux running there is no more answer to the ping request.

It's the same with not using DHCP in uBoot but ifconfig in uClinux to configure network: ping fails.

What's the problem? What am I doing wrong?

I'm using

BF518F-EZBRD

Uboot 2009R1.1-rc1

uImage 2009R1.1-RC4

Here what happens:

U-Boot 2008.10 (ADI-2009R1.1-rc1) (Dec 4 2009 - 03:18:46)

CPU: ADSP bf518-0.0 (Detected Rev: 0.1) (parallel flash boot)

Board: ADI BF518F EZ-Board board

Support: blackfin.uclinux.org/

Clock: VCO: 400 MHz, Core: 400 MHz, System: 80 MHz

RAM: 64 MB

Flash: 4 MB

In: serial

Out: serial

Err: serial

Net: Blackfin EMAC

MAC: 00:E0:22:FE:5F:94

Hit any key to stop autoboot: 0

bfin> dhcp

BOOTP broadcast 1

DHCP client bound to address 192.168.1.15

bfin> ping 192.168.1.3

Using Blackfin EMAC device

host 192.168.1.3 is alive <-everything's fine

bfin> run addip

bfin> run bootcmd

...

## Booting kernel from Legacy Image at 01000000 ...

Image Name: Linux-2.6.28.10-ADI-2009R1.1

Created: 2009-12-24 4:38:20 UTC

Image Type: Blackfin Linux Kernel Image (gzip compressed)

Data Size: 3807115 Bytes = 3.6 MB

Load Address: 00001000

Entry Point: 00190b80

Verifying Checksum ... OK

Uncompressing Kernel Image ...

...

BusyBox v1.13.4 (2009-12-24 12:36:40 CST) built-in shell (msh)

Enter 'help' for a list of built-in commands.

root:/> ifconfig <- after booting

eth0 Link encap:Ethernet HWaddr 00:E0:22:FE:5F:94

inet addr:192.168.1.15 Bcast:192.168.1.255 Mask:255.255.255.0

UP BROADCAST RUNNING 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

inet addr:127.0.0.1 Mask:255.0.0.0

UP LOOPBACK RUNNING 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)

root:/> ping -c 3 192.168.1.3 <- but ping fails

PING 192.168.1.3 (192.168.1.3): 56 data bytes

--- 192.168.1.3 ping statistics ---

3 packets transmitted, 0 packets received, 100% packet loss

root:/>

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2010-01-25 10:32:17 Re: Network works with uBoot but not with uClinux

Mike Frysinger (UNITED STATES)

Message: 85088

if your BF518F-EZBRD only has 1 NIC, then find locate PORTG_FER in /sys/kernel/debug/blackfin/ and clear bit 1 in the file.

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2010-01-26 02:34:48 Re: Network works with uBoot but not with uClinux

Mike Bunke (GERMANY)

Message: 85113

Seems there is no such file in the directory sys/kernel/debug/blackfin. Or I don't have permission to access!?

Is it possible to modify the kernel build process in any way that leads to correct functionality? Til now I tried it with the released uImage but in future I have to build my own image anyway.

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2010-01-26 02:40:42 Re: Network works with uBoot but not with uClinux

Mike Frysinger (UNITED STATES)

Message: 85115

are you sure there's no file ? the default uImage should always have this stuff enabled.

find /sys/kernel/debug/blackfin/ -name 'PORT*_FER'

the kernel is currently broken, but i imagine if you removed P_MII0_ERxER from:

arch/blackfin/mach-bf518/include/mach/portmux.h

that might do the trick

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2010-01-26 04:31:50 Re: Network works with uBoot but not with uClinux

Mike Bunke (GERMANY)

Message: 85162

Everything's fine with the new build (with modified portmux.h).

Thanks a lot.

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2010-07-31 23:42:16 Re: Network works with uBoot but not with uClinux

Thoralf Baum (GERMANY)

Message: 91971

Hi all,

I have just the same problem but the solution described here does not do the job for me - or I'm doing something wrong.

When uclinux is booted (after loaded via TFTP well), the eth0 is down. When I do 'ifconfig eth0 dynamic up', it does not do so. There are Rx-packets counted after repeated ifconfig but Tx packets remain 0.

My BF518F-EZBRD comes along with the National Semi DP83848, not with the Micrel mentioned in the data sheet.

I have tried these actions - without success:

1. commented out the P_MII0_ERxER in P_MII0 and P_RMII0 definitions in portmux.h

2. Set the kernel config option "Driver Options -> Network Device Support -> National Semiconductor"

Does anyone have an idea for me to get the ethernet connection running?

Thanks very much,

best regards,

Thoralf

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2010-08-01 01:44:48 Re: Network works with uBoot but not with uClinux

Mike Frysinger (UNITED STATES)

Message: 91973