Date: Fri, 5 Jul 2002 21:19:41 -0700 From: Alex Zepeda <zipzippy@sonic.net> To: Takanori Watanabe <takawata@axe-inc.co.jp>, current@freebsd.org Subject: Re: ACPI woes again.. Message-ID: <20020706041941.GA463@blarf.homeip.net> In-Reply-To: <200207050945.SAA28267@axe-inc.co.jp> References: <20020705071640.GA739@blarf.homeip.net> <200207050945.SAA28267@axe-inc.co.jp>
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On Fri, Jul 05, 2002 at 06:46:05PM +0900, Takanori Watanabe wrote: > Would you review this description? How about: --- acpi.4.orig Thu Jun 13 02:50:06 2002 +++ acpi.4 Fri Jul 5 21:16:59 2002 @@ -258,10 +258,35 @@ bus/children scan of the namespace. The ACPI CA code will still know about the avoided region. +.Sh OVERRIDING YOUR BIOS BYTECODE +ACPI interprets bytecode named AML, ACPI Machine Language, provided by BIOS +vendor as memory image at boot time. Sometimes, the AML code contains +incorrect bytecode that does not wreak havoc with the Microsoft implementations +of ACPI. Such bugs can often times prevent FreeBSD from booting. In case of +such issues, we provide a way to override buggy AML with your own AML +code. +.Pp +In order to load your AML code, +you must edit +.Pa /boot/loader.conf +and +include the follwing lines. +.Bd -literal -offset indent +acpi_dsdt_load="YES" +acpi_dsdt_name="/boot/acpi_dsdt.aml" #You may change the name. +.Ed +.Pp +In order to prepare your AML code, you will require +.Xr acpidump 8 , +.Xr iasl 1 +in devel/acpicatools port, and some ACPI knowledge. + .Sh COMPATIBILITY ACPI is only found/supported on Intel platforms (i386/IA32 and IA64). .Sh SEE ALSO .Xr config 8 , +.Xr loader.conf 5 , +.Xr acpidump 8 , .Xr acpi 9 .Sh AUTHORS .An -nosplit - alex To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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