-----Original Message----- From: Kevin O'Connor [mailto:kevin@koconnor.net] Sent: Tuesday, February 17, 2009 5:41 PM To: Myles Watson Cc: coreboot@coreboot.org Subject: Re: [coreboot] slow load times
On Tue, Feb 17, 2009 at 09:50:02AM -0700, Myles Watson wrote:
If you send the full log, maybe it will help diagnose that problem.
I've attached 3 logs. booted is from cold boot and was successful. ctrl-alt-del and ctrl-alt-del2 were my attempts to reboot during SeaBIOS. One time it hung the machine, the other time it didn't seem to do much. When it fails, the SeaBIOS part looks the same, but I get this at boot time, sometimes followed by kernel a panic.
[ 6.832316] ata5.00: ATAPI: _NEC DVD_RW ND-3540A, 1.01, max UDMA/33 [ 11.836055] ata5.01: qc timeout (cmd 0xf8)
What version of SeaBIOS did you try? Over the weekend, I commited f358759fb which fixed a problem with the RTC not being reset during ctrl+alt+delete. Your ctrl-alt-del2 log is similar to what I was seeing.
I didn't realize that you updated it. I'll try getting the latest.
The other two logs look like drive failures. I suppose your drives could be getting seriously confused when SeaBIOS tries to read/write to them while they are reporting BSY. Were these failures before you applied the await_not_bsy(iobase1) patch?
No, they were after.
// Look for device
await_not_bsy(iobase1); outb(slave ? ATA_CB_DH_DEV1 : ATA_CB_DH_DEV0,iobase1+ATA_CB_DH);
await_not_bsy(iobase1);This patch makes it wait for the controllers to initialize. It works sometimes from cold boot now!
Does it work consistently? If it still fails sometimes I'm confused on what it could be.
I'm not sure either. It's strange that SeaBIOS can load grub, but the kernel is confused later. Once it gets to the confused state, the factory kernel has to be loaded. A cold reboot isn't sufficient.
Thanks, Myles