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Re: [Qemu-devel] simulate SMI in Qemu
From: |
Laszlo Ersek |
Subject: |
Re: [Qemu-devel] simulate SMI in Qemu |
Date: |
Fri, 31 Jul 2015 19:27:52 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 |
On 07/30/15 09:16, Yu-Cheng Liu wrote:
> hello,
> Does QEMU support SMI/SMM implementation?
Yes.
> I use Qemu and coreboot to
> trace the procedure of the SMI/SMM ,the program return in SMM initial
> function ,the reason is the value return from "pci_read_word" ,the
> function always return 0, whatever the address I give.
>
> I want to simulate the board by qemu and use coreboot as BIOS,then
> trigger SMI by post value to b2h port ,Is that my idea can work ? or I
> need to burn coreboot.rom in real motherboard?
You should use the Q35 machine type. With regard to triggering an SMI,
one implementation you could refer to is here:
http://thread.gmane.org/gmane.comp.bios.edk2.devel/329/focus=332
(ICH9_APM_CNT is 0xB2, etc.)
Also, if you use KVM for acceleration, be sure to run a recent enough
upstream kernel on the host.
Laszlo