Re: [PATCH] S4Bios support for 2.4.20 + acpi-20021205

[Nils Faerber <nils-t93Ne7XHvje5bSeCtf/tX7NAH6kLmebB@public.gmane.org>]

On Fri, 13 Dec 2002 17:36:15 +0100
Ducrot Bruno <ducrot-kk6yZipjEM5g9hUCZPvPmw@public.gmane.org> wrote:
> On Fri, Dec 13, 2002 at 05:14:31PM +0100, Nils Faerber wrote:
> > On Fri, 13 Dec 2002 16:53:09 +0100
> > Ducrot Bruno <ducrot-kk6yZipjEM5g9hUCZPvPmw@public.gmane.org> wrote:
> > > Patch for 2.4.20 and acpi-20021205 for adding s4bios feature.
> Well, I don't know.  Perhaps lphdisk (I don't remember the URI) could
> help.  Some googling permit to get it.  Or (who knows?) even a
> /dev/hda1 as a vfat partition can help?

AFAIK this is only good for Phoenix BIOS whereas mine is AWARD
Medallion. Couldn't this also be specified in ACPI specs, i.e. how a
suspend partition has to look like?

> > does it suspend? I know for Phoenix BIOSes there is a tool on the
> > net to create that partition. I have a Asus L3800C notebook which
> > has AFAIK an AWARD BIOS. And AFAIK there is no tool available from
> > ASUS or AWARD to create such a partition.
> In a really perfect world:
> echo 1 > /proc/acpi/sleep	# for standby
> echo 2 > /proc/acpi/sleep	# for suspend to ram
> echo 3 > /proc/acpi/sleep	# for suspend to ram, but with more power conservative
> echo 4 > /proc/acpi/sleep	# for suspend to disk
> echo 5 > /proc/acpi/sleep	# for shutdown unfriendly the system

That would really be perfect :)
S1 on mine does just switch of the fan and stops the CPU. Nothing more.
S2 does not exist.
S3 does nothing except for funny ACPI messages:
	acpi: sleep 3
	acpi: GO!
	acpi: acpi_suspend call 3

And your S4BIOS patch ends up freezing the machine after "saving CPU
context". Oh, but S5 behaves as expected :)

> and perhaps
> echo 4b > /proc/acpi/sleep	# for suspend to disk via s4bios

For me it would be sufficient beeing able to set this at kernel compile
time, i.e. either swsusp or s4bios.

> Actually, since there is no S4 support in 2.4, 4 and 4b is the same
> here.

Yup I know :(
The swsusp patch for latest 2.4.20 + ACPI does not yet exist but all my
trials with swsusp showed that it is promising but did not work.

> Please note also that this patch DO NOT fix devices suspensions codes
> in general, and have certainly some data corruption that need to be
> fixed before a real inclusion.

Sure, no problem!
I first have to find out what type of suspend storage this damn BIOS
wants to have, then I can try to suspend and opnly then try to resume
:=)

> Ducrot Bruno
Thanks again!
CU
  nils faerber

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