Re: ACPI causes page fault/panic upon reboot

Dan Hulme wrote:
> Ok, I did as you said, and replaced "Microsoft Windows" with "FreeBSD" 
> in the following.  I also set the two variables in loader.conf.  The 
> result was that it loaded on boot, but for some reason it couldn't mount 
> my root partition.  I disabled acpi and was able to boot.  I looked more 
> carefully at the result of compiling, and this is what I saw:
> 
Can you provide a verbose dmesg, `boot -Dhv'?   How many instances of 
Windows did you change?  If there's more than one, you might want to try 
changing one at a time.

> acpi.asl   123:     If (S3EN)
> Error    1037 -      ^ syntax error
> 
> Here are the surrounding lines. To be honest, I really don't see what 
> could be causing a syntax error.
> 
> 118     Name (_S0, Package (0x02)
> 119     {
> 120         0x00,
> 121         0x00
> 122     })
            ^
It looks like you've got an extra closing paren at the end of line 122.

> 123     If (S3EN)
> 124     {
> 125         Name (_S3, Package (0x02)
> 126         {
> 127             0x05,
> 128             0x05
> 129         })
> 130     }
> 131     Else
> 132     {
> 133         Name (_S1, Package (0x02)
> 134         {
> 135             0x01,
> 136             0x01
> 137         })
> 138     }
> 
> -Dan
> 
Pete...

> Name (OSFL, 0x03)
> Method (_INI, 0, NotSerialized)
> {
>     If (MCTH (\_OS, "Microsoft Windows"))
>     {
>         Store (0x01, OSFL)
>     }
>     Else
>     {
> 
> Peter Schultz wrote:
> 
> 
>>Dan Hulme wrote:
>>
>>
>>>Disabling ACPI fixes the problem.  The problem appears to be in  dc0, 
>>>however.  See my other reply for details.
>>>
>>
>>You might be able to use ACPI, run this command:
>>
>>`acpidump -t -d > your.asl'
>>
>>In your.asl, change if statements that compare the value of _OS from 
>>"Windows" to "FreeBSD".  For example*:
>>
>>If (MCTH (\_OS, "Microsoft Windows NT"))
>>{
>>    Return (PIC1)
>>}
>>Else
>>{
>>    Return (PIC0)
>>}
>>
>>Overridden for use with FreeBSD:
>>If (MCTH (\_OS, "FreeBSD"))
>>{
>>    Return (PIC1)
>>}
>>Else
>>{
>>    Return (PIC0)
>>}
>>
>>After you customize your.asl, you'll want to compile** it, run:
>>
>>`iasl -f your.asl'
>>
>>DSDT.aml is the default output filename for the above command.  It's 
>>machine code you can offer to ACPI instead of using the DSDT provided 
>>with your motherboard.  You do this by editing /boot/loader.conf, add:
>>
>>acpi_dsdt_load="YES"
>>acpi_dsdt_name="/boot/DSDT.aml"
>>
>>Remember to move DSDT.aml to the /boot directory.  That's what I've 
>>done to get ACPI working back to how it was in the past.
>>
>>HTH,
>>Pete...
>>
>>* From my OEM ASL, a partnership with Microsoft?
>>
>>** We're forcing compilation because it seems most OEM ASLs are buggy.
>>
>>
>