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Date:      Fri, 27 Mar 2009 03:03:14 -0700 (PDT)
From:      Won De Erick <won.derick@yahoo.com>
To:        freebsd-hackers@freebsd.org
Subject:   Switching to SMM with FreeBSD 6.2 onwards
Message-ID:  <17314.10813.qm@web45811.mail.sp1.yahoo.com>
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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)' */
  ...

  /* 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.


Thanks in advance,

Won

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