Re: [PATCH]X86:reboot.c Add some dmi entries to pci_reboot_dmi_table.
From: Robert Hancock
Date: Wed Jun 02 2010 - 19:18:28 EST
On Wed, Jun 2, 2010 at 12:01 AM, Justin P. Mattock
<justinmattock@xxxxxxxxx> wrote:
>> Can you post the FACP section of the acpidump output from this machine?
>>
>
> here you go:
>
> Reset Register Supported (V2) : 1
> [074h 116 12] Reset Register : <Generic Address Structure>
> [074h 116 1] Space ID : 01 (SystemIO)
> [075h 117 1] Bit Width : 08
> [076h 118 1] Bit Offset : 00
> [077h 119 1] Access Width : 00
> [078h 120 8] Address : 0000000000000CF9
>
> [080h 128 1] Value to cause reset : 06
Hmm, so the FADT says the reset register is listed as supported, and
says writing 0x06 to 0xCF9 is supposed to do it.. That's exactly what
this should do:
#include <sys/io.h>
int main() {
iopl(3);
outb(6, 0xcf9);
return 0;
}
but you said that didn't do anything.. It kind of seems like ACPI
reboot is busted on this machine then, but then I wonder how Windows
manages to work..
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