From: Wolfgang Denk <wd@denx.de>
To: Jens-Peter.Oswald@kayser-threde.de
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: TQM860L hangs after soft reboot
Date: Thu, 13 Jan 2005 15:46:05 +0100 [thread overview]
Message-ID: <20050113144610.7E0A9C1466@atlas.denx.de> (raw)
In-Reply-To: Your message of "Thu, 13 Jan 2005 13:37:12 +0100." <1D40077EC04042479FDA552D718E051B010D7528@ktms3.net.local>
In message <1D40077EC04042479FDA552D718E051B010D7528@ktms3.net.local> you wrote:
>
> After a soft reset (from linux or bootloader u-boot) the board hangs.
I don't know which Linux kernel you're running, but U-Boot triggers a
checkstop reset of the CPU to reboot the system. If this does not
restart the board, then there is a hardware problem.
> I assume it might be a forgotten pullup- or pull down in our custom
> board.
>
> Any hints which pins I must check?
You should probably contact TQ Support with such a question. I doubt
that this is a topic for this mailing list. Try asking Andreas Widder,
08153-9308-235, <Andreas.Widder@tqc.de>
> By the way, how does linux handle a soft reset?
See function m8xx_restart() in "arch/ppc/kernel/m8xx_setup.c"; in our
linuxppc_2_4_devel tree the same mechanism as in U-Boot (i. e.
checkstop reset) is used.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
The best things in life are for a fee.
prev parent reply other threads:[~2005-01-13 14:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-13 12:37 TQM860L hangs after soft reboot Jens-Peter.Oswald
2005-01-13 14:46 ` Wolfgang Denk [this message]
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