Re: Overriding DSDT Tables with external files - 2 Methods

[John M Trostel <john.trostel-+vhbC7un7QRBDgjK7y7TUQ@public.gmane.org>]

And method #1 was the one I ended up using.  And it works :-)

Thanks to all who made suggestions, I appreciate the help.

On Fri, 2002-09-06 at 01:46, Sérgio Monteiro Basto wrote:
> I prefer the method 1 because with gcc of RedHat doesn't include .hex
> files 
> 
> On Thu, 2002-09-05 at 14:57, John M Trostel wrote:
> > There seem to be 2 closely related methods of overriding the DSDT in a
> > BIOS with your own files.
> > 
> > My question is... Do they both work? If they do both work, is one
> > prefered over the other?
> > 
> > ***********************************
> > Method 1 (from http://www.cpqlinux.com/acpi-howto.html and others)
> > 
> > 1. get the dsdt.hex file
> > 
> > 2. cp -a dsdt.hex to drivers/acpi/tables/acpi_dsdt.c
> > 
> > 3. apply  the following patch
> > 
> > --- linux/drivers/acpi/osl.c    Sat Jul 13 16:16:25 2002
> > +++ linux-2.4.18-xfs-acpi/drivers/acpi/osl.c    Sat Jul 13 14:33:09 2002
> > @@ -70,6 +70,7 @@
> >  static OSD_HANDLER acpi_irq_handler = NULL;
> >  static void *acpi_irq_context = NULL;
> > 
> > +extern unsigned char AmlCode[];
> > 
> >  acpi_status
> >  acpi_os_initialize(void)
> > @@ -221,7 +222,10 @@
> >         if (!existing_table || !new_table)
> >                 return AE_BAD_PARAMETER;
> > 
> > -       *new_table = NULL;
> > +       if (strncmp(existing_table->signature, "DSDT", 4) == 0)
> > +               *new_table = (acpi_table_header*)AmlCode;
> > +       else
> > +               *new_table = NULL;
> >         return AE_OK;
> >  }
> > 
> > 

-- 
John M. Trostel
Senior Software Engineer
Quantum Corp.
john.trostel-+vhbC7un7QRBDgjK7y7TUQ@public.gmane.org



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