Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
41 lines
914 B
C
41 lines
914 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_BIOS_EBDA_H
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#define _ASM_X86_BIOS_EBDA_H
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#include <asm/io.h>
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/*
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* Returns physical address of EBDA. Returns 0 if there is no EBDA.
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*/
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static inline unsigned int get_bios_ebda(void)
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{
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/*
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* There is a real-mode segmented pointer pointing to the
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* 4K EBDA area at 0x40E.
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*/
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unsigned int address = *(unsigned short *)phys_to_virt(0x40E);
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address <<= 4;
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return address; /* 0 means none */
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}
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void reserve_bios_regions(void);
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#ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION
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/*
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* This is obviously not a great place for this, but we want to be
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* able to scatter it around anywhere in the kernel.
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*/
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void check_for_bios_corruption(void);
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void start_periodic_check_for_corruption(void);
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#else
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static inline void check_for_bios_corruption(void)
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{
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}
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static inline void start_periodic_check_for_corruption(void)
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{
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}
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#endif
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#endif /* _ASM_X86_BIOS_EBDA_H */
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