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Re: kernel for a Broadcom Swarm board

To: "luk@debian.org" <luk@debian.org>, "linux-mips@linux-mips.org" <linux-mips@linux-mips.org>
Subject: Re: kernel for a Broadcom Swarm board
From: "Jon Fraser" <jfraser@broadcom.com>
Date: Fri, 1 May 2009 11:16:53 -0400
Cc: jfraser@broadcom.com
In-reply-to: <49FA27FA.3070408@debian.org>
Organization: Broadcom
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <49FA27FA.3070408@debian.org>
Reply-to: jfraser@broadcom.com
Sender: linux-mips-bounce@linux-mips.org
On Thu, 2009-04-30 at 15:36 -0700, Luk Claes wrote:
> Hi
> 
>  > | [    0.000000] Broadcom SiByte BCM1250 B2 @ 800 MHz (SB1 rev 2)
>  > | [    0.000000] Board type: SiByte BCM91250A (SWARM)
>  > | [    0.000000] This kernel optimized for board runs with CFE
>  > | [    0.000000] Determined physical RAM map:
>  > | [    0.000000]  memory: 000000000fe47e00 @ 0000000000000000 (usable)
>  > | [    0.000000] Initrd not found or empty - disabling initrd
>  > | [    0.000000] Zone PFN ranges:
>  > | [    0.000000]   DMA32    0x00000000 -> 0x00100000
>  > | [    0.000000]   Normal   0x00100000 -> 0x00100000
>  > | [    0.000000] Movable zone start PFN for each node
>  > | [    0.000000] early_node_map[1] active PFN ranges
>  > | [    0.000000]     0: 0x00000000 -> 0x0000fe47
>  > | [    0.000000] Detected 1 available secondary CPU(s)
>  > | [    0.000000] Built 1 zonelists in Zone order, mobility grouping 
> on.  Total
>  > pages: 64205
>  > | [    0.000000] Kernel command line: root=/dev/hdc1 console=duart0
>  > | [    0.000000] Primary instruction cache 32kB, VIVT, 4-way, 
> linesize 32 bytes.
>  > | [    0.000000] Primary data cache 32kB, 4-way, PIPT, no aliases, 
> linesize 32
>  > bytes
>  > | [    0.000000] PID hash table entries: 1024 (order: 10, 8192 bytes)
>  >
>  > And then it hangs...
> 
> The zeros look like there are no timing interrupts happening. It's a 
> pity we don't have hardware to test which kernel version introduced the 
> bug (for instance with git-bisect and reboots).
> 
> Cheers
> 
> Luk
> 

Try turning off SMP.  I have a 1480 (big sur) board.  I just tried
2.6.28.9.  This is 32 bit, little endian mode.  With SMP turned on,
it hung in the same place.  With SMP turned off, it booted fine.


Jon Fraser
Broadcom

> 



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