diff options
| author | Matt Fleming <matt.fleming@intel.com> | 2014-06-13 11:39:55 (GMT) |
|---|---|---|
| committer | Matt Fleming <matt.fleming@intel.com> | 2014-07-18 20:23:52 (GMT) |
| commit | 44be28e9dd9880dca3e2cbf7a844f2114e67f2cb (patch) | |
| tree | 8f0ed71cd35b242fc546ccdd9da58f7c0f6363a2 /arch/x86/include/asm/efi.h | |
| parent | 0c5ed61adbdbf2ca5de934642d5be1e971c498c1 (diff) | |
| download | linux-44be28e9dd9880dca3e2cbf7a844f2114e67f2cb.tar.xz | |
x86/reboot: Add EFI reboot quirk for ACPI Hardware Reduced flag
It appears that the BayTrail-T class of hardware requires EFI in order
to powerdown and reboot and no other reliable method exists.
This quirk is generally applicable to all hardware that has the ACPI
Hardware Reduced bit set, since usually ACPI would be the preferred
method.
Cc: Len Brown <len.brown@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'arch/x86/include/asm/efi.h')
| -rw-r--r-- | arch/x86/include/asm/efi.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index 9043f36..044a2fd 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -183,6 +183,8 @@ extern struct efi_config *efi_early; #define efi_call_early(f, ...) \ efi_early->call(efi_early->f, __VA_ARGS__); +extern bool efi_reboot_required(void); + #else /* * IF EFI is not configured, have the EFI calls return -ENOSYS. @@ -195,6 +197,10 @@ extern struct efi_config *efi_early; #define efi_call5(_f, _a1, _a2, _a3, _a4, _a5) (-ENOSYS) #define efi_call6(_f, _a1, _a2, _a3, _a4, _a5, _a6) (-ENOSYS) static inline void parse_efi_setup(u64 phys_addr, u32 data_len) {} +static inline bool efi_reboot_required(void) +{ + return false; +} #endif /* CONFIG_EFI */ #endif /* _ASM_X86_EFI_H */ |