mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 11:44:01 +08:00
607ca46e97
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
39 lines
1.4 KiB
C
39 lines
1.4 KiB
C
/*
|
|
* linux/include/linux/edd.h
|
|
* Copyright (C) 2002, 2003, 2004 Dell Inc.
|
|
* by Matt Domsch <Matt_Domsch@dell.com>
|
|
*
|
|
* structures and definitions for the int 13h, ax={41,48}h
|
|
* BIOS Enhanced Disk Drive Services
|
|
* This is based on the T13 group document D1572 Revision 0 (August 14 2002)
|
|
* available at http://www.t13.org/docs2002/d1572r0.pdf. It is
|
|
* very similar to D1484 Revision 3 http://www.t13.org/docs2002/d1484r3.pdf
|
|
*
|
|
* In a nutshell, arch/{i386,x86_64}/boot/setup.S populates a scratch
|
|
* table in the boot_params that contains a list of BIOS-enumerated
|
|
* boot devices.
|
|
* In arch/{i386,x86_64}/kernel/setup.c, this information is
|
|
* transferred into the edd structure, and in drivers/firmware/edd.c, that
|
|
* information is used to identify BIOS boot disk. The code in setup.S
|
|
* is very sensitive to the size of these structures.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License v2.0 as published by
|
|
* the Free Software Foundation
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
#ifndef _LINUX_EDD_H
|
|
#define _LINUX_EDD_H
|
|
|
|
#include <uapi/linux/edd.h>
|
|
|
|
#ifndef __ASSEMBLY__
|
|
extern struct edd edd;
|
|
#endif /*!__ASSEMBLY__ */
|
|
#endif /* _LINUX_EDD_H */
|