Xen devel - Feb 2008 - A question on vmx loader in xen - how and when rombios is 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

 



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> 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@lists.xensource.com
[mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of Hu Jia Yi
Sent: 2008年2月28日 11:26
To: xen-devel@lists.xensource.com
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

 



_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel