[LinuxBIOS] FILO issues

Peter Stuge stuge-linuxbios at cdy.org
Sun Apr 8 03:54:17 CEST 2007

On Sat, Apr 07, 2007 at 08:22:02PM +0200, Peter Stuge wrote:
> > > > FILO trunk can't boot from hdb, with or without my patch. Has
> > > > anyone ever been able to boot a kernel from a slave device?
> > > 
> > Any logs for the failure case?

(The factory BIOS sees the device on primary slave.)

FILO version 0.5 (stuge at carepad4) Sun Apr  8 03:16:08 CEST 2007
Can't get memory map from firmware. Using hardcoded default.
boot: hdb1:/boot/kernel-genkernel-x86-2.6.18 root=/dev/hdb1
ide_software_reset: Waiting for ide0 to become ready for reset... ok
IDE time out waiting for bsy
No drive detected on IDE channel 0
boot: hdb1:/boot/kernel-genkernel-x86-2.6.18 root=/dev/hdb1
Drive 1 does not exist
boot: hdb1:/boot/kernel-genkernel-x86-2.6.18 root=/dev/hdb1

The "waiting for bsy" was added by me to pinpoint where it times out.

It's in ide_software_reset()..

/* Disable Interrupts and reset the ide bus */

/* If BSY bit is not asserted within 400ns, no device there */
if (await_ide(bsy, ctrl, currticks() + IDE_RESET_PULSE) < 0) {
	return -1;

And so, it fails. I tried increasing IDE_RESET_PULSE to 1s but still
no go.


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