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Re: NXP STB225 board support

To: linux-mips@linux-mips.org
Subject: Re: NXP STB225 board support
From: "Ihar Hrachyshka" <ihar.hrachyshka@gmail.com>
Date: Thu, 8 Jan 2009 18:58:38 +0200
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On Tue, Dec 23, 2008 at 4:48 PM, Ihar Hrachyshka
<ihar.hrachyshka@gmail.com> wrote:
> Hello!
> I try to start vanilla linux kernel on pnx-8335-stb225 board. What I did:
> 1. ARCH=mips make pnx-8335-stb225_defconfig
> 2. ARCH=mips make
> 3. Prepared U-Boot image with mkimage.
>
> After booting it up I get the following output on my UART:
>
> Linux version 2.6.28-rc9.netflix.PR12_RC2 (booxter@EPBYMINW0568) (gcc
> version 4.2.1) #3 PREEMPT Tue Dec 23 15:52:10 EET 2008
> CPU revision is: 00019068 (MIPS 4KEc)
> Determined physical RAM map:
>  memory: 10000000 @ 00000000 (usable)
> Zone PFN ranges:
>  Normal   0x00000000 -> 0x00010000
> Movable zone start PFN for each node
> early_node_map[1] active PFN ranges
>    0: 0x00000000 -> 0x00010000
> Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 65024
> Kernel command line:
> mtdparts=gen_nand:128k(Boot0),1M(Boot1),512k(Env),4M(Kernel),16M(Filesystem)
> ip3902.mac_address=00:60:37:03:00:00 ip=10.6.2.53:10.6.27.3
> Unknown boot option `ip3902.mac_address=00:60:37:03:00:00': ignoring
> Primary instruction cache 16kB, VIPT, 2-way, linesize 16 bytes.
> Primary data cache 8kB, 4-way, VIPT, no aliases, linesize 16 bytes
> PID hash table entries: 1024 (order: 10, 4096 bytes)
> CPU clock is 320 MHz
> Console: colour dummy device 80x25
> console [ttyS0] enabled
>
> After this last message there is no any activity. It seems that kernel
> hanged. What can I do to see what's going on (maybe stack trace)? Any
> suggestions?
> Has anyone started the board successfully with vanilla kernel?
>
> Thanks in advance,
> Ihar Hrachyshka
>

Bisecting my Linus vanilla git, I found that the problem appeared
after the following patch was applied:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=566f74f6b2f8b85d5b8d6caaf97e5672cecd3e3e

After reverting the patch, Linus vanilla git kernel again boots ok on
the board. Please, take a look.

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