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/*-
* Copyright (c) 2000,2001 Michael Smith
* Copyright (c) 2000 BSDi
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* 6.1 : Environmental support
*/
#include <sys/types.h>
#include <sys/linker_set.h>
#include <sys/sysctl.h>
#include "acpi.h"
static u_long amd64_acpi_root;
SYSCTL_ULONG(_machdep, OID_AUTO, acpi_root, CTLFLAG_RD, &amd64_acpi_root, 0,
"The physical address of the RSDP");
ACPI_STATUS
AcpiOsInitialize(void)
{
return(0);
}
ACPI_STATUS
AcpiOsTerminate(void)
{
return(0);
}
ACPI_STATUS
AcpiOsGetRootPointer(UINT32 Flags, ACPI_POINTER *RsdpPhysicalAddress)
{
ACPI_POINTER ptr;
ACPI_STATUS status;
if (amd64_acpi_root == 0) {
/*
* The loader passes the physical address at which it found the
* RSDP in a hint. We could recover this rather than searching
* manually here.
*/
status = AcpiFindRootPointer(Flags, &ptr);
if (status == AE_OK)
amd64_acpi_root = ptr.Pointer.Physical;
} else
status = AE_OK;
RsdpPhysicalAddress->PointerType = ACPI_PHYSICAL_POINTER;
RsdpPhysicalAddress->Pointer.Physical = amd64_acpi_root;
return (status);
}
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