efi.h: Add allocation types for boottime->allocate_pages()

Add the allocation types detailed in section 6.2 - "AllocatePages()"
of the UEFI 2.3 specification. These definitions will be used by the
x86 EFI boot stub which needs to allocate memory during boot.

Cc: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Link: http://lkml.kernel.org/r/1318848017-12301-1-git-send-email-matt@console-pimps.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/efi.h b/include/linux/efi.h
index e35005f451db..378f2cd1f7c3 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -109,6 +109,14 @@ typedef struct {
         u32 imagesize;
 } efi_capsule_header_t;
 
+/*
+ * Allocation types for calls to boottime->allocate_pages.
+ */
+#define EFI_ALLOCATE_ANY_PAGES          0
+#define EFI_ALLOCATE_MAX_ADDRESS        1
+#define EFI_ALLOCATE_ADDRESS            2
+#define EFI_MAX_ALLOCATE_TYPE           3
+
 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
 
 /*