Commit 9c97e0bd authored Sep 03, 2014 by Laszlo Ersek Committed by Matt Fleming Oct 03, 2014

efi: Add macro for EFI_MEMORY_UCE memory attribute



Add the following macro from the UEFI spec, for completeness:

  EFI_MEMORY_UCE  Memory cacheability attribute: The memory region
                  supports being configured as not cacheable, exported,
                  and supports the "fetch and add" semaphore mechanism.

Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>

parent a5a750a9

include/linux/efi.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -92,6 +92,7 @@ typedef struct {
		#define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
		#define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
		#define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
		#define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */
		#define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
		#define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
		#define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */