linux-kernel - Re: [MIPS] Build an embedded initramfs into mips kernel

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Message-ID: <47683B2D.9030608@zytor.com>
Date:	Tue, 18 Dec 2007 13:27:09 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Alon Bar-Lev <alon.barlev@...il.com>
CC:	linux-mips@....linux-mips.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [MIPS] Build an embedded initramfs into mips kernel

Alon Bar-Lev wrote:
> Hello,
> 
> I am trying to build a basic initramfs image into the kernel, using
> the CONFIG_INITRAMFS_SOURCE. The required result is a single image
> loaded into a target containing usermode application (busybox).
> 
> I use cross compile mipsel-unknown-linux-uclibc in order to build the
> kernel and the initramfs's usermode.
> 
> The cpio image is created using cpio -o -H newc command.
> 
> The same configuration works with i586-pc-linux-uclibc cross compile.
> 
> printk at init/main.c::run_init_process() shows that the
> kernel_execve() returns -2 (ENOENT) for /init and -14 (EFAULT) for
> /*/init.
> 
> Looking at the initramfs /init is available and executable.
> 
> Any reason why I get ENOENT?
> Any special procedure should be performed for mips arch?
> 

Make sure your /init doesn't depend on an interpreter or library which 
isn't available.

	-hpa
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