| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * 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. |
| */ |
| #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 */ |
