kernel.org's kernel: building and root file system

kernel.org's kernel: building and root file system

[KokHow Teh]

Hi;
      I am new to this and I have some questions of "what's next?" after
having downloaded the latest kernel from kernel.org:

(1)   Since I am going to build the kernel for PPC platform and
architecture, running `make xconfig` won't bring up the right set of
configurations for your target but the default which is a generic X86
architecture and platform. What is the usual step so that I will have the
configuration set for my target? I think of 2:

      (i) copy arch/ppc/configs/<foo>_defconfig to $SRC_BASE/.config; `make
xconfig`
      (ii) `make xconfig`; and inside the X-window, open the
arch/ppc/configs/<foo>_defconfig and save it for your architecture.

      I tried (ii) but after having opened the <foo>_defconfig, it is not
reflected at all in the X-window. It is still showing the default
configurations.

(2)   Ok, you have the kernel running on your PPC target. How about the
root file system? Where and how can I have/build a generic root file system
that works with kernels running from kernel.org?

(3)   Toolchain. What cross-toolchain is generally used to build the kernel
for your target? For PPC, I come across this
http://penguinppc.org/dev/crosstool.php... Is that popularly used to build
kernel from kernel.org for PPC architecture and platform?

      Thanks for any comment and insight.

Regards,
TEH

Re: kernel.org's kernel: building and root file system

[Johannes Geissel]

Am Donnerstag, 6. Oktober 2005 06:53 schrieb KokHow Teh:
> Hi;
>       I am new to this and I have some questions of "what's next?" after
> having downloaded the latest kernel from kernel.org:
>
> (1)   Since I am going to build the kernel for PPC platform and
> architecture, running `make xconfig` won't bring up the right set of
> configurations for your target but the default which is a generic X86
> architecture and platform. What is the usual step so that I will have the
> configuration set for my target? I think of 2:
>
>       (i) copy arch/ppc/configs/<foo>_defconfig to $SRC_BASE/.config; `make
> xconfig`
Don't copy anything, just do a make <foo>_config. Before that you have 
to do export CROSS_COMPILE=ppc_xxx-

>       (ii) `make xconfig`; and inside the X-window, open the
> arch/ppc/configs/<foo>_defconfig and save it for your architecture.
>
>       I tried (ii) but after having opened the <foo>_defconfig, it is not
> reflected at all in the X-window. It is still showing the default
> configurations.
>
> (2)   Ok, you have the kernel running on your PPC target. How about the
> root file system? Where and how can I have/build a generic root file system
> that works with kernels running from kernel.org?
>
> (3)   Toolchain. What cross-toolchain is generally used to build the kernel
> for your target? For PPC, I come across this
> http://penguinppc.org/dev/crosstool.php... Is that popularly used to build
> kernel from kernel.org for PPC architecture and platform?
I'm using ELDK from www.denx.de and also a linuxppc_2_4_devel kernel
from there.

>
>       Thanks for any comment and insight.
>
> Regards,
> TEH
>
>
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded

Re: kernel.org's kernel: building and root file system

[Wolfgang Denk]

In message <OFAF025B3B.4E7DEDE8-ON48257092.0018E543@uk.marconicomms.com> you wrote:
> 
>       I am new to this and I have some questions of "what's next?" after
> having downloaded the latest kernel from kernel.org:

Have a look at the DULG - http://www.denx.de/twiki/bin/view/DULG/Manual

It covers most of your questions.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
Harrison's Postulate:
	For every action, there is an equal and opposite criticism.