Thank you.
I notice the system then jumps to F000:FFF0
to execute. But because VMX is turned on, switching to real-mode would incur
problems?
I don’t find any clue to turn on the vm86
mode as Readme in the tools/firmware directory puts.
Best
regards,
Hu Jia
Yi
Ext:
20430
Tel:
65-67510430
-----Original Message-----
From: Cui, Dexuan
[mailto:dexuan.cui@xxxxxxxxx]
Sent: Thursday, February 28, 2008
11:43 AM
To: Hu Jia Yi;
xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-devel] A
question on vmx loader in xen - how and when rombiosis loaded into memory
> how and when
rombios, vgabios and vmxassist have been loaded to the memory from the disk
before calling “memcpy”.
They are statically
compiled into hvmloader in the way of C array and are loaded with
hvmloader.
Please step into the
directory hvmloader/ and search for "roms.h" in Makefile.
-- Dexuan
From:
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Hu Jia Yi
Sent: 2008年2月28日 11:26
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] A question on
vmx loader in xen - how and when rombiosis loaded into memory
A “main”
function is defined in Xen-3.1.0-source/tools/firmware/hvmloader/hvmloader.c.
In this main
function, rombios, vgabios and vmxassist are copied to specified address,
with following
commands
memcpy((void
*)ROMBIOS_PHYSICAL_ADDRESS, rombios, rombios_sz);
…
memcpy((void
*)ETHERBOOT_PHYSICAL_ADDRESS, etherboot, sizeof(etherboot));
….
But after
searching the whole directory “firmware”, I don’t know how and when
rombios, vgabios and vmxassist have been loaded to the memory from the disk
before calling “memcpy”.
Could anybody
help me on this?
Best regards,
Hu Jia Yi
Ext: 20430
Tel: 65-67510430
