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https://github.com/szehl/ath9k-hmac.git
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67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
#ifndef __BACKPORT_EFI_H
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#define __BACKPORT_EFI_H
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#include_next <linux/efi.h>
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#include <linux/version.h>
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0))
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/* This backports:
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*
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* commit 83e68189745ad931c2afd45d8ee3303929233e7f
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* Author: Matt Fleming <matt.fleming@intel.com>
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* Date: Wed Nov 14 09:42:35 2012 +0000
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*
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* efi: Make 'efi_enabled' a function to query EFI facilities
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*
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*/
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/* check first if this was already backported */
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#ifndef EFI_BOOT
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/*
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* We play games with efi_enabled so that the compiler will, if
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* possible, remove EFI-related code altogether.
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*/
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#define EFI_BOOT 0 /* Were we booted from EFI? */
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#define EFI_SYSTEM_TABLES 1 /* Can we use EFI system tables? */
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#define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
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#define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
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#define EFI_MEMMAP 4 /* Can we use EFI memory map? */
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#define EFI_64BIT 5 /* Is the firmware 64-bit? */
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#ifdef CONFIG_EFI
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# ifdef CONFIG_X86
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static inline int compat_efi_enabled(int facility)
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{
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switch (facility) {
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case EFI_BOOT:
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return efi_enabled;
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
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case EFI_64BIT:
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return efi_64bit;
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#endif
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default:
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printk(KERN_ERR "can not translate efi_enabled() to old values completly\n");
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return efi_enabled;
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}
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}
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# else
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static inline int compat_efi_enabled(int facility)
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{
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return 1;
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}
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# endif
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#else
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static inline int compat_efi_enabled(int facility)
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{
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return 0;
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}
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#endif
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#ifdef efi_enabled
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#undef efi_enabled
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#endif
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#define efi_enabled(facility) compat_efi_enabled(facility)
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#endif /* EFI_BOOT */
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#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0)) */
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#endif /* __BACKPORT_EFI_H */
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