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Re: booting error on db1550 using linux 2.6.12 from linux-mips.org

To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: booting error on db1550 using linux 2.6.12 from linux-mips.org
From: rolf liu <rolfliu@gmail.com>
Date: Fri, 8 Jul 2005 12:27:06 -0700
Cc: ppopov@embeddedalley.com, "linux-mips@linux-mips.org" <linux-mips@linux-mips.org>
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Reply-to: rolf liu <rolfliu@gmail.com>
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Alan,

I tried ide=nodma as boot option. It doesn't work either. It stops at
the same place.

Then I used pci_write_config_byte(dev, 0x5b, 0x21); It works and can
boot with the hard disk.  I also tried to force the 372n timing with
the linux-mips cvs head, It also works fine.

I know using PCI Clock as the only timing could have some speed
problems. And forcing 372n timing is like a dirty hack.  Your
suggestion is really appreciated.

thanks



On 7/7/05, Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> On Iau, 2005-07-07 at 19:42, rolf liu wrote:
> > Alan,
> > Tried your patch on db1550 and linux 2.6.12. It still doesn't work.
> > During the boot-up, the kernel will hang up right after it prints out:
> >
> > >>hdg: max request size: 128 KiB
> 
> > Any suggestion?
> 
> Its got started if it gets that far because the LBA48 status has been
> checked. What occurs if you boot with ide=nodma ?
> 
>

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