Re: what files should be included in initrd

In message <040944A92C91D211954D00C095EE82680168FF32@POST> you wrote:

sorry for this question, but it's the first time I try to use linux on my

It's a good question, but it has been asked many, many times before.
See http://penguinppc.org/usr/embedded/howto/PowerPC-Embedded-HOWTO-13.html#ss13.2
and http://www.linux.org/docs/ldp/howto/Bootdisk-HOWTO/buildroot.html

I'm using PPCBoot and the MontaVista kernel. Both work fine, but I don't
know how to make a initrd image.

See "Documentation/initrd.txt" in your Linux source directory.

Can someone give me a short overwiew on how to build such an image and what
files should be included?

You include those files you need in your embedded system. The minimum
(without any tricks and modifications  to  the  Linux  kernel)  is  a
special  file  for  /dev/console (c 5 1) and a regular file with your
statically linked application that is started as init process.

See ftp://ftp.denx.de/pub/LinuxPPC/usr/src/SIMPLE-PPCBOOT-ramdisk for
an example - this is a PPCBoot image ready for use; you can use

	dd if=SIMPLE-PPCBOOT-ramdisk bs=64 skip=1 of=ramdisk.image.gz

to create a "normal" ramdisk image.


Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
"There are three principal ways to lose money: wine, women, and engi-
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more certain."                           - Baron Rothschild, ca. 1800

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