dsdt with 2.5

dsdt with 2.5

[roychris]

I've just fixed my dsdt. How can I load it with the 2.5.69 kernel ?

Thanks



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Re: custom dsdt with 2.5

[Stefan Behnel]

Hi!

roychris wrote:
> I've just fixed my dsdt. How can I load it with the 2.5.69 kernel ?

Try
http://www.behnel.de/acpi/acpi-custom-DSDT.patch
resp.
http://www.behnel.de/acpi/samsung-acpi.html

At least, it works for 2.4, but I don't see why it shouldn't work for ACPI in 2.5.

BTW: There were patches recently that allow loading the DSDT from an initrd. Search the archives for that.

Stefan

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 Stefan Behnel
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Re: dsdt with 2.5

[Ducrot Bruno]

On Fri, May 09, 2003 at 10:48:21AM +0200, roychris wrote:
> I've just fixed my dsdt. How can I load it with the 2.5.69 kernel ?
> 

Exact same procedure as for the 2.4 kernel (I don't know, though
for the initrd patch..).


-- 
Ducrot Bruno

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.


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Re: custom dsdt with 2.5

[Markus Gaugusch]

On May 9, roychris <roychris-GANU6spQydw@public.gmane.org> wrote:
> I changed by hand the osl.c of the kernel 2.5. I can send you a diff if
> you want. This is the few lines I changed :
>
> #include "/my/home/dsdt.hex"
>
> and
>
> *new_table = (struct acpi_table_header *) AmlCode;
This function is called for several tables, you must check if the DSDT
table is going to be replaced.
I have ported my DSDT in initrd to 2.5.69 and will release it within the
next one or two hours.

Markus
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Re: custom dsdt with 2.5

[roychris]

I changed by hand the osl.c of the kernel 2.5. I can send you a diff if 
you want. This is the few lines I changed :

#include "/my/home/dsdt.hex"

and

*new_table = (struct acpi_table_header *) AmlCode;

Now I have this error at boot time :

ACPI: Subsystem revision 20030418
    ACPI-0291: *** Info: Table [DSDT] replaced by host OS
    ACPI-0227: *** Error: Invalid signature where RSDP indicates 
RSDT/XSDT should be located
    ACPI-0103: *** Error: acpi_load_tables: Could not load RSDT: 
AE_BAD_SIGNATURE
    ACPI-0133: *** Error: acpi_load_tables: Could not load tables: 
AE_BAD_SIGNATURE
ACPI: Unable to load the System Description Tables


Could you help me ?


Stefan Behnel wrote:

> Hi!
>
> roychris wrote:
>
>> I've just fixed my dsdt. How can I load it with the 2.5.69 kernel ?
>
>
> Try
> http://www.behnel.de/acpi/acpi-custom-DSDT.patch
> resp.
> http://www.behnel.de/acpi/samsung-acpi.html
>
> At least, it works for 2.4, but I don't see why it shouldn't work for 
> ACPI in 2.5.
>
> BTW: There were patches recently that allow loading the DSDT from an 
> initrd. Search the archives for that.
>
> Stefan
>




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Re: custom dsdt with 2.5

[Ducrot Bruno]

On Fri, May 09, 2003 at 05:09:12PM +0200, roychris wrote:
> I changed by hand the osl.c of the kernel 2.5. I can send you a diff if 
> you want. This is the few lines I changed :
> 
> #include "/my/home/dsdt.hex"
> 
> and
> 
> *new_table = (struct acpi_table_header *) AmlCode;
> 

*ALL* acpi tables will be passed to acpi_table_override().  Therefore,
the RSDT table have been replaced by the table that you have provided.
Since that is not what you want (RSDT is not DSDT), the ACPI subsystem
can not work properly.

Do something like this:

	*new_table = NULL;

	if (!strncmp((strncmp(existing_table->signature, DSDT_SIG, 4))))
		*new_table = (struct acpi_table_header *) AmlCode;


BTW, I don't see any reason why you have to patch by hand osl.c and you don't
use acpi-custom-DSDT.patch instead.
Really, it look good for me.  What say

$ patch -p1 -i /path/to/acpi-custom-DSDT.patch
in the linux-2.5.69 directory ?


Cheers,

-- 
Ducrot Bruno

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.


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