From e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb Mon Sep 17 00:00:00 2001 From: Yang Zhang Date: Fri, 28 Aug 2015 09:58:54 +0800 Subject: Add qemu 2.4.0 Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang --- qemu/roms/ipxe/src/core/acpi.c | 86 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 qemu/roms/ipxe/src/core/acpi.c (limited to 'qemu/roms/ipxe/src/core/acpi.c') diff --git a/qemu/roms/ipxe/src/core/acpi.c b/qemu/roms/ipxe/src/core/acpi.c new file mode 100644 index 000000000..330f50631 --- /dev/null +++ b/qemu/roms/ipxe/src/core/acpi.c @@ -0,0 +1,86 @@ +/* + * Copyright (C) 2006 Michael Brown . + * + * 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. + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#include +#include +#include + +/** @file + * + * ACPI support functions + * + */ + +/****************************************************************************** + * + * Utility functions + * + ****************************************************************************** + */ + +/** + * Fix up ACPI table checksum + * + * @v acpi ACPI table header + */ +void acpi_fix_checksum ( struct acpi_description_header *acpi ) { + unsigned int i = 0; + uint8_t sum = 0; + + for ( i = 0 ; i < acpi->length ; i++ ) { + sum += *( ( ( uint8_t * ) acpi ) + i ); + } + acpi->checksum -= sum; +} + +/****************************************************************************** + * + * Interface methods + * + ****************************************************************************** + */ + +/** + * Describe object in an ACPI table + * + * @v intf Interface + * @v acpi ACPI table + * @v len Length of ACPI table + * @ret rc Return status code + */ +int acpi_describe ( struct interface *intf, + struct acpi_description_header *acpi, size_t len ) { + struct interface *dest; + acpi_describe_TYPE ( void * ) *op = + intf_get_dest_op ( intf, acpi_describe, &dest ); + void *object = intf_object ( dest ); + int rc; + + if ( op ) { + rc = op ( object, acpi, len ); + } else { + /* Default is to fail to describe */ + rc = -EOPNOTSUPP; + } + + intf_put ( dest ); + return rc; +} -- cgit 1.2.3-korg