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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("$FreeBSD$");
#include <sys/types.h>
#include <sys/linker_set.h>
#include <sys/sysctl.h>
#include <machine/efi.h>
#include <contrib/dev/acpica/acpi.h>
static struct uuid acpi_root_uuid = EFI_TABLE_ACPI20;
static u_long acpi_root_phys;
SYSCTL_ULONG(_machdep, OID_AUTO, acpi_root, CTLFLAG_RD, &acpi_root_phys, 0,
"The physical address of the RSDP");
ACPI_STATUS
AcpiOsInitialize(void)
{
return(AE_OK);
}
ACPI_STATUS
AcpiOsTerminate(void)
{
return(AE_OK);
}
ACPI_STATUS
AcpiOsGetRootPointer(UINT32 Flags, ACPI_POINTER *RsdpAddress)
{
void *acpi_root;
if (acpi_root_phys == 0) {
acpi_root = efi_get_table(&acpi_root_uuid);
if (acpi_root == NULL)
return (AE_NOT_FOUND);
acpi_root_phys = IA64_RR_MASK((u_long)acpi_root);
}
RsdpAddress->PointerType = ACPI_PHYSICAL_POINTER;
RsdpAddress->Pointer.Physical = acpi_root_phys;
return (AE_OK);
}
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