From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Ungerer Subject: Re: Kernel boot problem on IXP422 Rev. A Date: Sat, 14 Jun 2008 17:17:05 +1000 Message-ID: <48537071.6060902@snapgear.com> References: <1522484831@web.de> <4851BC65.4030501@snapgear.com> <4852C582.9000508@web.de> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4852C582.9000508@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: > first, thanks for the hints. >> >> 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. >> > This seems to be set correctly. > >> 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... > Will try that, > Today I downloaded the snapgear distribution and tried whether i can > generate a kernel image that works with it...and it boots (2.4 and 2.6) > :-) Then I downloaded a fresh 2.6.25 kernel and compiled it with > toolchain from the snapgear homepage...and it does not boot. Are there > any special patches in the 2.6.19-uc1 from the snapgear distribution > that might have influence on a IXP422 based board? I don't recall any specific fixes as such. There is support for a few extra IXPxxx based boards. Do a quick diff against a stock 2.6.19. There may be a number of changes related to non-mmu arm in there, they won't have any impact on IXP4xx support though. > Additionally, it seems that we may have a little problem in the > bootloader (uboot) when passing kernel parameters (e.g."setenv bootargs > console=ttyS0,115200"). Setting such a paramter causes the same problem > with a dying kernel. Maybe there is a relation. Kernel dying, not just no console? Is your serial console on ttyS0 or ttyS1? Regards Greg ------------------------------------------------------------------------ Greg Ungerer -- Chief Software Dude EMAIL: gerg@snapgear.com SnapGear -- a Secure Computing Company PHONE: +61 7 3435 2888 825 Stanley St, FAX: +61 7 3891 3630 Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com