Thanks Martin !! I got Ethernet on L4 Linux !!

Taeung treeze.taeung at
Wed Jul 2 11:34:57 CEST 2014

Hi, Martin

Sorry for late answer.
I was very busy because of my company.

On 06/26/2014 05:58 PM, Martin Schröder wrote:
> Am 26.06.2014 09:05, schrieb Taeung:
>> Hi, Martin
>> Great to see again :-)
> Yeah :-)
>> The reason of that I disabled 'L4_CLK_NOOP' is as below.
>> When I added  SD/MMC device driver and etc options in menuconfig, I met
>> error message as below.
>> So, in order to solve this problem, I modified source code at first and
>> amended Kconfig file thereafter.
> Ok, that makes sense.
> What about your progress with fiasco? 

I've succeeded in loading two L4Linux and running MPI program in each.
And I've succeeded in getting Ethernet which can connect external network.

> Did you manage to get everything running you need? Interesting to hear 
> that SD/MMC is running on your system.

But I've failed in getting SD/MMC despite loading MMC driver and 
registering MMC device in IO server.
I guess that there is problems in mach-setup.c (about PHY?) like 
previous a problem of Ethernet.
Somehow I guess that some modification in mach-setup.c is needed.

> I use it only temporary for booting U-Boot and will be removed later.
I can't use SD card in L4 Linux yet.
> What I am missing is support for NAND and NOR (via SPI), but next week 
> I will start this task.
> Currently I am stumbling with IPC. I have about 12 different Linux 
> processes communicating via Unix Sockets in each direction. Now I want 
> to have 6 on one l4linux an 6 on another l4linux. I got it working by 
> using the l4shmnet driver and TCP-Sockets, but IP is not allowed and 
> the Linux IP-Stack must be removed, so I have to use something else. 
> Unfortunately I don't know of any ready-to-use alternative, so I have 
> to do it on my own.
I haven't try to do IPC in two L4 Linux.
Did you make sure you enable it as below?

  L4Linux configuration  --->
     Features  ---> Make Linux be a server
     Stub drivers  ---> l4shm based network driver

> Best regards from Berlin,
>    Martin.

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