Re: [ACPI] Make CONFIG_ACPI_BOOT optional

[Maciek G. <ma...@ac...>]

On pi=B1, 2002-06-07 at 14:40, Pavel Machek wrote:
> Hi!
>=20
> This makes CONFIG_ACPI_BOOT optional. Omnibook xe3 will not boot with
> CONFIG_ACPI_BOOT, interesting parts are done before blacklist has
> chance to stop it...
>=20
> Please apply,
> 								Pavel

Hey!

I don't know if this is related, but I was having very similar problem
on my HP Pavilion n5415 laptop, which is, I believe, a kind of omnibook
xe3 (dmi identification from http://sourceforge.net/projects/omke/
detects "HP OmniBook XE3 GE"). It was crashing at the very beginning of
the boot process, before any kernel message appeared on the screen.

What I found is that boot crashes are caused by:

	for (i =3D 0; i < sdt.count; i++)
		sdt.entry[i].pa =3D (unsigned long) mapped_rsdt->entry[i];

at acpi_table_get_sdt function in drivers/acpi/tables.c file.

I don't know why it's happening but using acpidmp utility I found a
workaround for it. Not very elegant and not portable at all:

	#define FADTtable 0x0fefee0a
	#define BOOTtable 0x0fefee7e
	#define SSDTtable 0x0fefeea6

	sdt.entry[0].pa =3D FADTtable;
	sdt.entry[1].pa =3D BOOTtable;
	sdt.entry[2].pa =3D SSDTtable;

...instead of the "for" loop.

It works for me, but I realize this couldn't be a final solution...

Hope that helps

Maciek