efi_loader: provide efi_mem_desc version
Provide version of struct efi_mem_desc in efi_get_memory_map().
EFI_BOOT_SERVICES.GetMemoryMap() in UEFI specification v2.6 defines
memory descriptor version to 1. Linux kernel also expects descriptor
version to be 1 and prints following warning during boot if its not:
Unexpected EFI_MEMORY_DESCRIPTOR version 0
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@gmail.com>
diff --git a/include/efi.h b/include/efi.h
index 83de2d4..5a3b8cf 100644
--- a/include/efi.h
+++ b/include/efi.h
@@ -159,6 +159,8 @@
u64 attribute;
};
+#define EFI_MEMORY_DESCRIPTOR_VERSION 1
+
/* Allocation types for calls to boottime->allocate_pages*/
#define EFI_ALLOCATE_ANY_PAGES 0
#define EFI_ALLOCATE_MAX_ADDRESS 1
diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c
index df3547c..80e4e26 100644
--- a/lib/efi_loader/efi_memory.c
+++ b/lib/efi_loader/efi_memory.c
@@ -339,6 +339,9 @@
if (descriptor_size)
*descriptor_size = sizeof(struct efi_mem_desc);
+ if (descriptor_version)
+ *descriptor_version = EFI_MEMORY_DESCRIPTOR_VERSION;
+
if (*memory_map_size < map_size)
return EFI_BUFFER_TOO_SMALL;