multiboot2: Add description of EFI image handle tags

Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/doc/multiboot.texi b/doc/multiboot.texi
index 8c9203d6954f8a058f1e118a0b4843811693dd52..49293e403afd48c190f892f4df50158bbc282cbe 100644 (file)
--- a/doc/multiboot.texi
+++ b/doc/multiboot.texi
@@ -1295,6 +1295,34 @@ u32     | size = 8          |
 
 This tag indicates ExitBootServices wasn't called
 
+@subsection EFI 32-bit image handle pointer
+@example
+@group
+        +-------------------+
+u32     | type = 19         |
+u32     | size = 12         |
+u32     | pointer           |
+        +-------------------+
+@end group
+@end example
+
+This tag contains pointer to EFI i386 image handle.
+Usually it is boot loader image handle.
+
+@subsection EFI 64-bit image handle pointer
+@example
+@group
+        +-------------------+
+u32     | type = 20         |
+u32     | size = 16         |
+u64     | pointer           |
+        +-------------------+
+@end group
+@end example
+
+This tag contains pointer to EFI amd64 image handle.
+Usually it is boot loader image handle.
+
 @node Examples
 @chapter Examples
 

diff --git a/doc/multiboot2.h b/doc/multiboot2.h
index 240400d36bed24f5c698256b6d054656848f808c..b85cb130aff7c605a0892a30a6371787f354cc56 100644 (file)
--- a/doc/multiboot2.h
+++ b/doc/multiboot2.h
@@ -60,6 +60,8 @@
 #define MULTIBOOT_TAG_TYPE_NETWORK           16
 #define MULTIBOOT_TAG_TYPE_EFI_MMAP          17
 #define MULTIBOOT_TAG_TYPE_EFI_BS            18
+#define MULTIBOOT_TAG_TYPE_EFI32_IH          19
+#define MULTIBOOT_TAG_TYPE_EFI64_IH          20
 
 #define MULTIBOOT_HEADER_TAG_END  0
 #define MULTIBOOT_HEADER_TAG_INFORMATION_REQUEST  1
@@ -372,6 +374,20 @@ struct multiboot_tag_efi_mmap
   multiboot_uint8_t efi_mmap[0];
 }; 
 
+struct multiboot_tag_efi32_ih
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint32_t pointer;
+};
+
+struct multiboot_tag_efi64_ih
+{
+  multiboot_uint32_t type;
+  multiboot_uint32_t size;
+  multiboot_uint64_t pointer;
+};
+
 #endif /* ! ASM_FILE */
 
 #endif /* ! MULTIBOOT_HEADER */