184447Sdfr/*- 284447Sdfr * Copyright (c) 2000,2001 Michael Smith 384447Sdfr * Copyright (c) 2000 BSDi 484447Sdfr * All rights reserved. 584447Sdfr * 684447Sdfr * Redistribution and use in source and binary forms, with or without 784447Sdfr * modification, are permitted provided that the following conditions 884447Sdfr * are met: 984447Sdfr * 1. Redistributions of source code must retain the above copyright 1084447Sdfr * notice, this list of conditions and the following disclaimer. 1184447Sdfr * 2. Redistributions in binary form must reproduce the above copyright 1284447Sdfr * notice, this list of conditions and the following disclaimer in the 1384447Sdfr * documentation and/or other materials provided with the distribution. 1484447Sdfr * 1584447Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1684447Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1784447Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1884447Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1984447Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2084447Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2184447Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2284447Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2384447Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2484447Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2584447Sdfr * SUCH DAMAGE. 2684447Sdfr */ 2784447Sdfr 28135453Smarcel#include <sys/cdefs.h> 29135453Smarcel__FBSDID("$FreeBSD: releng/10.2/sys/ia64/acpica/OsdEnvironment.c 270296 2014-08-21 19:51:07Z emaste $"); 30135453Smarcel 31108026Smarcel#include <sys/types.h> 32270296Semaste#include <sys/efi.h> 33108026Smarcel#include <sys/sysctl.h> 3484447Sdfr 35193530Sjkim#include <contrib/dev/acpica/include/acpi.h> 3684447Sdfr 37135453Smarcelstatic u_long acpi_root_phys; 38108026Smarcel 39135453SmarcelSYSCTL_ULONG(_machdep, OID_AUTO, acpi_root, CTLFLAG_RD, &acpi_root_phys, 0, 40135453Smarcel "The physical address of the RSDP"); 41108026Smarcel 4284447SdfrACPI_STATUS 4384447SdfrAcpiOsInitialize(void) 4484447Sdfr{ 45135453Smarcel 46215023Sjkim return (AE_OK); 4784447Sdfr} 4884447Sdfr 4984447SdfrACPI_STATUS 5084447SdfrAcpiOsTerminate(void) 5184447Sdfr{ 52135453Smarcel 53215023Sjkim return (AE_OK); 5484447Sdfr} 5584447Sdfr 56215023Sjkimstatic u_long 57215023Sjkimacpi_get_root_from_efi(void) 58215023Sjkim{ 59215023Sjkim static struct uuid acpi_root_uuid = EFI_TABLE_ACPI20; 60215023Sjkim void *acpi_root; 61215023Sjkim 62215023Sjkim acpi_root = efi_get_table(&acpi_root_uuid); 63215023Sjkim if (acpi_root != NULL) 64215023Sjkim return (IA64_RR_MASK((uintptr_t)acpi_root)); 65215023Sjkim 66215023Sjkim return (0); 67215023Sjkim} 68215023Sjkim 69167814SjkimACPI_PHYSICAL_ADDRESS 70167814SjkimAcpiOsGetRootPointer(void) 7184447Sdfr{ 72135453Smarcel 73215023Sjkim if (acpi_root_phys == 0) 74215023Sjkim acpi_root_phys = acpi_get_root_from_efi(); 7584447Sdfr 76167814Sjkim return (acpi_root_phys); 7784447Sdfr} 78