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Date: Mon, 15 Mar 1999 01:23:25 +0900 (JST)
From: Takanori Watanabe <takawata@shidahara1.planet.sci.kobe-u.ac.jp>
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Subject: i386/10587: ACPI BIOS Detection is no effect.
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>Number:         10587
>Category:       i386
>Synopsis:       ACPI BIOS Detection is no effect.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Mar 14 08:30:01 PST 1999
>Closed-Date:
>Last-Modified:
>Originator:     Takanori Watanabe
>Release:        FreeBSD 4.0-RELEASE i386
>Organization:
Kobe University
>Environment:
FreeBSD sana.home.local 4.0-CURRENT FreeBSD 4.0-CURRENT #2: Wed Mar 10 14:46:01 JST 1999     takawata@sana.home.local:/usr/home/takawata/src/sys/compile/LIEUTENANT  i386



>Description:

	In sys/i386/i386/bios.c ,there is following code.
            printf("ACPI: %08x\n", bios_sigsearch(0, "FACP", 4, 1, 0));
	This signature will not be found in so-called BIOS area.
	The table is actually set up in tail of the memory.
	There is "RST PTR " signatuere in so-called BIOS area .
	(This signature represent the table containing pointer to  
	the FACP Table)
>How-To-Repeat:

	Rebuild  kernel with VM86 option and boot the kernel with -v option.

>Fix:
	
 	replace with
		printf("ACPI: %08x\n",bios_sigsearch(0,"RST PTR ",8,16 0));		
 		
 			


>Release-Note:
>Audit-Trail:
>Unformatted:


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