Run L4linux on ARM platform

[Adam Lackorzynski]

On Thu Jul 05, 2007 at 00:15:15 +0800, kashin Lin wrote:
> 1. i have got l4linux-2.6-env, fiasco and l4linux-2.6 from svn.
>   my directory contains following sub-directory now :
>   l4linux-2.6/   l4/   dice/   tools/   kernel/
> 
>   after reading  http://os.inf.tu-dresden.de/L4/LinuxOnL4/build-2.6.shtml
>   i know the sequence of building L4Linux now.
> 
>   but...if i want to cross compile L4Linux for ARM, can i just add
> "CC=arm-linux-g++" to
>   every "make" step in
> http://os.inf.tu-dresden.de/L4/LinuxOnL4/build-2.6.shtml ?

No, cross compiling L4Linux is done the same way as with normal Linux (+
giving the subarchitecture):
make L4ARCH=arm CROSS_COMPILE=arm-linux- ...

>   if not, can you show me how to do that more lucid
>   ( i can't find many information about cross-compile
> L4Linux or any documents from Internet  )
> 
> 2. as you metioned above, i should adapt the configuration of fiasco
> to my target platform,
> but...     (1) when do i do this? before make anything?

Not only the configuration but also the code. You probably need to
write a e.g. UART driver for your platform. As I said, I don't know
which UART is used on your board. Can you tell which type of UART is
used there?

>    (2) how to config fiasco? i know there is a step "make config
> O=/path/to/build/dir"

There isn't any difference really for the configuration of Fiasco
whether it's configured for ARM or x86. Go to the fiasco directory, call
"make B=build-1", "cd build-1", "make config" to configure, and "make"
to build it.

> 2007/7/4, Adam Lackorzynski <adam at os.inf.tu-dresden.de>:
> >
> >Hi,
> >
> >On Tue Jul 03, 2007 at 16:46:27 +0800, kashin Lin wrote:
> >> i am a new hand to do this...
> >> so i really need some help & suggestions.
> >>
> >> this is my GOAL : run ( port )  L4linux on ARM platform
> >(ARM920T-S3C2410)
> >> ( the link of that platform : PreSOCes-C in
> >> http://www.microtime.com.tw/English/PreSOC.htm )
> >>
> >> i have some question:
> >> 1. i know L4Linux must run with l4(fiasco) & l4env.but when i want to
> >> download L4Linux  from
> >>    http://os.inf.tu-dresden.de/drops/download.html , instead of module "
> >> l4linux", svn only has module "l4linux-2.6-env".
> >>   so i am confused that is this module(l4linux-2.6-env) contains L4Linux
> >+
> >> fiasco + l4env or just L4Linux or not at all???
> >>
> >>    or give me a suggestion about what i should download to achieve my
> >goal
> >
> >I've just improved the website a bit to be more correct. L4Linux has a
> >different repository. So, you need l4linux from the l4linux repository
> >and l4linux-2.6-env from the tudos repository.
> >
> >> 2. to achieve my goal, i guess the process should be:
> >>    cross-compile source code to image ¡÷ load the image to target
> >>    platform ¡÷
> >> modify bootloader to boot from l4linux ¡÷ finish
> >>    is this process right ?
> >>    should i modify any file before cross-compiling l4linux?
> >>    are there any thing i should take care about?
> >
> >Running system software on custom hardware nearly always needs adaptions
> >to this hardware. Fiasco must support the interrupt controller, timer,
> >UART of the platform to work at all. Looking at the website I fear that
> >all of this must be implemented first. I'm not familiar with hw from
> >this vendor. But as there's Linux available for this platform this
> >should be doable.
> >
> >
> >
> >Adam
> >--
> >Adam                 adam at os.inf.tu-dresden.de
> >  Lackorzynski         http://os.inf.tu-dresden.de/~adam/
> >
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> >

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Adam
-- 
Adam                 adam at os.inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/