[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF
From: |
David Woodhouse |
Subject: |
Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM |
Date: |
Tue, 19 Feb 2013 15:29:17 +0000 |
On Mon, 2013-02-18 at 17:37 -0500, Kevin O'Connor wrote:
> The ACPI v2 spec describes a "hard" reset register. SeaBIOS could
> extract it from the FADT and then use it. Of course, we'd probably
> want to update the QEMU ACPI tables to implement ACPI v2 then.
This sounded great until I actually came to implement it.
The PIIX reset at 0xcf9 requires *two* writes; one to set the reset type
and then a second write with bit 2 set to actually do the reset.
The ACPI RESET_REG definition only allows for *one* value to be written.
Is that because the PIIX will actually do a hard reset when you write
0x06 to it *anyway*, despite theoretically saying that you should write
0x02 first? Or is the ACPI definition of RESET_REG simply incapable of
being used on the PIIX?
--
dwmw2
smime.p7s
Description: S/MIME cryptographic signature
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, (continued)
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, Laszlo Ersek, 2013/02/18
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, David Woodhouse, 2013/02/18
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, Gleb Natapov, 2013/02/18
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, Kevin O'Connor, 2013/02/19
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, Gleb Natapov, 2013/02/18
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, Kevin O'Connor, 2013/02/18
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, David Woodhouse, 2013/02/18
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, Kevin O'Connor, 2013/02/18
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, David Woodhouse, 2013/02/18
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, Kevin O'Connor, 2013/02/18
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM,
David Woodhouse <=
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, Laszlo Ersek, 2013/02/19
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, David Woodhouse, 2013/02/19
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, David Woodhouse, 2013/02/19
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, Laszlo Ersek, 2013/02/19
- Re: [Qemu-devel] [SeaBIOS] [edk2] (PAM stuff) reset doesn't work on OVMF + SeaBIOS CSM, Laszlo Ersek, 2013/02/18