From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Ungerer Subject: Re: Kernel boot problem on IXP422 Rev. A Date: Fri, 13 Jun 2008 10:16:37 +1000 Message-ID: <4851BC65.4030501@snapgear.com> References: <1522484831@web.de> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1522484831@web.de> Sender: linux-embedded-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Marcus Tangermann Cc: linux-embedded@vger.kernel.org Hi Marcus, Marcus Tangermann wrote: > we currently try to boot a 2.6.21 kernel on a custom IXP422 based board. The boot loader (U-Boot) works fine so far, memory and flash test run successfully, the NPE is also able to ping a host. So we assume the board itself is more or less working at least. > When we try to boot a 2.6.21 kernel after uncompressing the kernel the boot process dies somehow. We've figured out so far that the kernel dies somewhere between the gunzip and start_kernel. > I would be glad for any hint to be able to solve the problem. The most common problem like this I have seen are that the ARM machine type set by the boot loader does not match those compiled into the kernel. Also make sure that the RAM size being passed to the kernel is correct too. Enable the kernels CONFIG_DEBUG_LL and it may give you some early debug output (like an id not supported message). That assumes a serial console... Regards Greg ------------------------------------------------------------------------ Greg Ungerer -- Chief Software Dude EMAIL: gerg@snapgear.com Secure Computing Corporation PHONE: +61 7 3435 2888 825 Stanley St, FAX: +61 7 3891 3630 Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com