freebsd-dev/sys/ia64/acpica/OsdEnvironment.c

81 lines
2.5 KiB
C

/*-
* 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.
*
* $FreeBSD$
*/
/*
* 6.1 : Environmental support
*/
#include <sys/types.h>
#include <sys/linker_set.h>
#include <sys/sysctl.h>
#include "acpi.h"
extern u_int64_t ia64_efi_acpi_table;
extern u_int64_t ia64_efi_acpi20_table;
u_long ia64_acpi_root;
SYSCTL_ULONG(_machdep, OID_AUTO, acpi_root, CTLFLAG_RD, &ia64_acpi_root, 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)
{
if (ia64_acpi_root == 0) {
if (ia64_efi_acpi20_table) {
/* XXX put under bootverbose. */
printf("Using ACPI2.0 table at 0x%lx\n",
ia64_efi_acpi20_table);
ia64_acpi_root = ia64_efi_acpi20_table;
} else if (ia64_efi_acpi_table) {
/* XXX put under bootverbose. */
printf("Using ACPI1.x table at 0x%lx\n",
ia64_efi_acpi_table);
ia64_acpi_root = ia64_efi_acpi_table;
} else
return (AE_NOT_FOUND);
}
RsdpAddress->PointerType = ACPI_PHYSICAL_POINTER;
RsdpAddress->Pointer.Physical = ia64_acpi_root;
return (AE_OK);
}