Messages in this thread | | | Date | Wed, 2 Jun 2010 20:05:29 -0600 | Subject | Re: [PATCH]X86:reboot.c Add some dmi entries to pci_reboot_dmi_table. | From | Robert Hancock <> |
| |
On Wed, Jun 2, 2010 at 8:00 PM, Justin P. Mattock <justinmattock@gmail.com> wrote: > On 06/02/2010 06:47 PM, Robert Hancock wrote: >> >> On Wed, Jun 2, 2010 at 7:37 PM, Matthew Garrett<mjg59@srcf.ucam.org> >> wrote: >>> >>> On Wed, Jun 02, 2010 at 05:27:22PM -0700, Justin P. Mattock wrote: >>>> >>>> On 06/02/2010 05:20 PM, Robert Hancock wrote: >>>>> >>>>> #include<unistd.h> >>>>> >>>>> int main() { >>>>> iopl(3); >>>>> outb(2, 0xcf9); >>>>> sleep(1); >>>>> outb(6, 0xcf9); >>>>> return 0; >>>>> } >>>>> >>>>> That's basically what PCI reboot does. >>>> >>>> the above code reboot's the machine as it should.. >>>> I can look at that(need to take a break first though) >>>> and see.. >>> >>> That's pretty infuriating. The ACPI-provided definition doesn't work, >>> and there's no ACPI mechanism for expressing the more complex cf9 >>> behaviour. Windows doesn't appear to special case this, so we're >>> probably left trying to figure out why the keyboard controller method >>> doesn't work. Sigh. >> >> Do these Macs even have a PC keyboard controller? A recent thread on >> PS/2 keyboard/mouse controller probing suggests they may not.. >> >> Justin, what happens if you try the simple outb(6, 0xcf9) test program >> multiple times, does that do anything? >> > > > this reboots the system > > > int main() { > iopl(3); > outb(6, 0xcf9); > return 0; > }
On a single try, or multiple times? (You tried that one before once and it didn't work, right?) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |