Date: Fri, 27 Mar 2009 19:21:44 +0900 From: Takanori Watanabe <takawata@init-main.com> To: Won De Erick <won.derick@yahoo.com> Cc: freebsd-hackers@freebsd.org Subject: Re: Switching to SMM with FreeBSD 6.2 onwards Message-ID: <200903271021.n2RALixB062663@sana.init-main.com> In-Reply-To: Your message of "Fri, 27 Mar 2009 03:03:14 MST." <17314.10813.qm@web45811.mail.sp1.yahoo.com>
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In message <17314.10813.qm@web45811.mail.sp1.yahoo.com>, Won De Erick wrote:
>
>Hi All,
>
>I'm not quite familiar with FreeBSD, but I want to do the following in 6.2/7.1
>.
>
> /* Raise IOPL to 3 to open all I/O ports */
> /* something like 'i386_iopl(3)' */
> ...
see i386_get_ioperm(2) or io(4).
> /* Open SMRAM access */
> outl(unsigned int port, unsigned long int data);
>
>
>Also, I appreciate comments on the following wrapper:
>
>static inline outl(unsigned int port, unsigned long int data)
>{
> asm("outl %0, %1" : : "a" (data), "dN" (port));
>}
>
>
>My goal is to switch the processor to SMM by triggering SMI from userland.
Probably this will work.
So what do you want ask about that?
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