From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from outbound3-dub-R.bigfish.com (outbound-dub.frontbridge.com [213.199.154.16]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "*.bigfish.com", Issuer "*.bigfish.com" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 7533ADDF22 for ; Wed, 30 Apr 2008 01:49:21 +1000 (EST) MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C8AA10.90DD9CDE" Subject: RE: Virtex4FX12LC hangs in calibrating delay loop Date: Tue, 29 Apr 2008 08:47:23 -0700 References: <20070621151554.GA22663@cip.informatik.uni-erlangen.de> <16955743.post@talk.nabble.com> From: "Stephen Neuendorffer" To: "wangyanlong" , Message-Id: <20080429154912.310D417D808D@mail80-dub.bigfish.com> List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. ------_=_NextPart_001_01C8AA10.90DD9CDE Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I think I've seen this happen when the boot code doesn't have the = workarounds for the cache errata. I'm not sure if that code ever made it into grant's git server, but it's definitely is in the xilinx git = tree at git.xilinx.com. Steve -----Original Message----- From: linuxppc-embedded-bounces+stephen=3Dneuendorffer.name@ozlabs.org = on behalf of wangyanlong Sent: Tue 4/29/2008 1:53 AM To: linuxppc-embedded@ozlabs.org Subject: Re: Virtex4FX12LC hangs in calibrating delay loop =20 I meet the same problem as yours , have you fix your problem now ??? I = am keep trying !!!! Thomas Glanzmann wrote: >=20 > Hello, > I used the HEAD secretlabs kernel and used ml403 defconfig. I still = see > no serial output from the _kernel_ on the serial console. But I do see > output from the in kernel embedded boot loader "load_kernel". I typed = in > stop in xmd and got an instruction pointer which points to: >=20 > c00045a0 <__delay>: > c00045a0: 2c 03 00 00 cmpwi r3,0 > c00045a4: 7c 69 03 a6 mtctr r3 > c00045a8: 4d 82 00 20 beqlr > c00045ac: 42 00 00 00 bdnz- c00045ac <__delay+0xc> = =20 > <<<<<<<< > c00045b0: 4e 80 00 20 blr >=20 > So I guess it is the calibrating delay loop and I am not sure. I can > reproduce > this. It is always in this function. Now I wonder is my board missing > timer interrupts? What could be the reason for this. And of course one > much more important question: >=20 > - Is the serial console initialized before or after the > calibrating delay loop? >=20 > Is there a way to get a backtrace out of this? If that is the case = what > do I have to do? Recompile the Kernel with frame pointers and attach > gdb? >=20 > Thomas > _______________________________________________ > Linuxppc-embedded mailing list > Linuxppc-embedded@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-embedded >=20 >=20 --=20 View this message in context: = http://www.nabble.com/Virtex4FX12LC-hangs-in-calibrating-delay-loop-tp112= 35297p16955743.html Sent from the linuxppc-embedded mailing list archive at Nabble.com. _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded ------_=_NextPart_001_01C8AA10.90DD9CDE Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable RE: Virtex4FX12LC hangs in calibrating delay loop

I think I've seen this happen when the boot code = doesn't have the workarounds for the cache errata.  I'm not sure if = that code ever made
it into grant's git server, but it's definitely is in the xilinx git = tree at git.xilinx.com.

Steve

-----Original Message-----
From: linuxppc-embedded-bounces+stephen=3Dneuendorffer.name@ozlabs.org = on behalf of wangyanlong
Sent: Tue 4/29/2008 1:53 AM
To: linuxppc-embedded@ozlabs.org
Subject: Re: Virtex4FX12LC hangs in calibrating delay loop


I meet the same problem as yours ,  have you fix your problem now = ??? I am
keep trying !!!!

Thomas Glanzmann wrote:
>
> Hello,
> I used the HEAD secretlabs kernel and used ml403 defconfig. I still = see
> no serial output from the _kernel_ on the serial console. But I do = see
> output from the in kernel embedded boot loader = "load_kernel". I typed in
> stop in xmd and got an instruction pointer which points to:
>
>         c00045a0 = <__delay>:
>         = c00045a0:       2c 03 00 = 00     cmpwi   r3,0
>         = c00045a4:       7c 69 03 = a6     mtctr   r3
>         = c00045a8:       4d 82 00 = 20     beqlr
>         = c00045ac:       42 00 00 = 00     bdnz-   c00045ac = <__delay+0xc>     
> <<<<<<<<
>         = c00045b0:       4e 80 00 = 20     blr
>
> So I guess it is the calibrating delay loop and I am not sure. I = can
> reproduce
> this. It is always in this function. Now I wonder is my board = missing
> timer interrupts? What could be the reason for this. And of course = one
> much more important question:
>
>         - Is the serial = console initialized before or after the
>           = calibrating delay loop?
>
> Is there a way to get a backtrace out of this? If that is the case = what
> do I have to do? Recompile the Kernel with frame pointers and = attach
> gdb?
>
>         Thomas
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://oz= labs.org/mailman/listinfo/linuxppc-embedded
>
>

--
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