Date: Sat, 10 Jun 2000 13:27:01 +0900 From: "Daniel C. Sobral" <dcs@newsguy.com> To: Luoqi Chen <luoqi@watermarkgroup.com> Cc: current@FreeBSD.ORG, emulation@FreeBSD.ORG Subject: Re: VMware detection code in boot loader Message-ID: <3941C395.621849D9@newsguy.com> References: <200006091527.e59FRYb10540@lor.watermarkgroup.com>
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Luoqi Chen wrote:
>
> Would anyone object if I add a ficl word to detect whether we're booting
> from a vmware virtual machine? I find it extremely useful when I'm running
> FreeBSD as a guest under NT. Because it is a dual cpu box, I can't use a
> single kernel to boot both directly or inside the virtual machine. With this
> new word, I can determine which kernel to use in the loader script, saving
> me the trouble to unload and reload a new kernel each time I reboot.
>
> Here's the patch to the boot loader,
>
> --- boot/ficl/ficl.h 2000/06/01 18:10:43 1.14
> +++ boot/ficl/ficl.h 2000/06/07 18:18:38
> @@ -860,6 +860,7 @@
> #if defined(__i386__) && !defined(TESTMAIN)
> extern void ficlOutb(FICL_VM *pVM);
^^^^^^^^
> extern void ficlInb(FICL_VM *pVM);
^^^^^^^
> +extern void vmware(FICL_VM *pVM);
We have inb and outb. Can't vmware be written in Forth? If inl cannot be
replaced with inb, I'd rather add inl than vmware.
> To use this feature, you first create a file /boot/vmware.4th:
>
> : vmware-conf
> vmware dup 0> if
> ." VMware version " . cr
> ." Loading /boot/vmware.conf..." cr
> s" /boot/vmware.conf" read-conf
> else
> drop
> then
> ;
>
> then create /boot/vmware.conf which sets the kernel to use:
>
> kernel="/kernel.VMWARE"
>
> finally, change your /boot/loader.rc to
>
> include /boot/loader.4th
> include /boot/vmware.4th
> initialize drop
> vmware-conf
> boot-conf
> check-password
IMHO, it would be better to add
exec="include /boot/vmware.4th"
to the end of your /boot/loader.conf, and either execute vmware-conf
from there or script the whole thing:
s" arch-i386" environment? [if]
\ Get vmware version, magic
0x564d868 ( VMware magic ) = [if]
.( VMware version ) . cr
.( Loading /boot/vmware.conf...) cr
s" /boot/vmware.conf" read-conf
[else]
drop
[then]
[then]
Either way, no changes to /boot/loader.rc would be required.
--
Daniel C. Sobral (8-DCS)
dcs@newsguy.com
dcs@freebsd.org
capo@yet.another.bsdconspiracy.org
Hmmm - I have to go check this. My reality assumptions are shattered.
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