| /* |
| * Copyright (C) 2017 Michael Brown <mbrown@fensystems.co.uk>. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of the |
| * License, or any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| * 02110-1301, USA. |
| * |
| * You can also choose to distribute this program under the terms of |
| * the Unmodified Binary Distribution Licence (as given in the file |
| * COPYING.UBDL), provided that you have satisfied its requirements. |
| */ |
| |
| FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); |
| |
| /** |
| * @file |
| * |
| * iPXE ACPI API for EFI |
| * |
| */ |
| |
| #include <ipxe/acpi.h> |
| #include <ipxe/efi/efi.h> |
| #include <ipxe/efi/Guid/Acpi.h> |
| #include <ipxe/efi/efi_acpi.h> |
| |
| /** ACPI configuration table */ |
| static EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_POINTER *rsdp; |
| EFI_USE_TABLE ( ACPI_10_TABLE, &rsdp, 0 ); |
| |
| /** |
| * Locate ACPI root system description table |
| * |
| * @ret rsdt ACPI root system description table, or UNULL |
| */ |
| static userptr_t efi_find_rsdt ( void ) { |
| |
| /* Locate RSDT via ACPI configuration table, if available */ |
| if ( rsdp ) |
| return phys_to_user ( rsdp->RsdtAddress ); |
| |
| return UNULL; |
| } |
| |
| PROVIDE_ACPI ( efi, acpi_find_rsdt, efi_find_rsdt ); |
| PROVIDE_ACPI_INLINE ( efi, acpi_find ); |