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30 lines
1.1 KiB
30 lines
1.1 KiB
4 months ago
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* linux/include/linux/edd.h
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* Copyright (C) 2002, 2003, 2004 Dell Inc.
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* by Matt Domsch <Matt_Domsch@dell.com>
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*
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* structures and definitions for the int 13h, ax={41,48}h
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* BIOS Enhanced Disk Drive Services
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* This is based on the T13 group document D1572 Revision 0 (August 14 2002)
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* available at http://www.t13.org/docs2002/d1572r0.pdf. It is
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* very similar to D1484 Revision 3 http://www.t13.org/docs2002/d1484r3.pdf
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*
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* In a nutshell, arch/{i386,x86_64}/boot/setup.S populates a scratch
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* table in the boot_params that contains a list of BIOS-enumerated
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* boot devices.
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* In arch/{i386,x86_64}/kernel/setup.c, this information is
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* transferred into the edd structure, and in drivers/firmware/edd.c, that
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* information is used to identify BIOS boot disk. The code in setup.S
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* is very sensitive to the size of these structures.
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*/
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#ifndef _LINUX_EDD_H
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#define _LINUX_EDD_H
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#include <uapi/linux/edd.h>
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#ifndef __ASSEMBLY__
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extern struct edd edd;
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#endif /*!__ASSEMBLY__ */
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#endif /* _LINUX_EDD_H */
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