efi: Add EFI file I/O data types

The x86 EFI stub needs to access files, for example when loading
initrd's. Add the required data types.

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, 40 insertions, 0 deletions

diff --git a/include/linux/efi.h b/include/linux/efi.h
index d407c88f955f..37c300712e02 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -307,6 +307,12 @@ typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules,
 #define EFI_PCI_IO_PROTOCOL_GUID \
     EFI_GUID(  0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x2, 0x9a )
 
+#define EFI_FILE_INFO_ID \
+    EFI_GUID(  0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
+
+#define EFI_FILE_SYSTEM_GUID \
+    EFI_GUID(  0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
+
 typedef struct {
         efi_guid_t guid;
         unsigned long table;
@@ -362,6 +368,40 @@ typedef struct {
         unsigned long unload;
 } efi_loaded_image_t;
 
+typedef struct {
+        u64 revision;
+        void *open_volume;
+} efi_file_io_interface_t;
+
+typedef struct {
+        u64 size;
+        u64 file_size;
+        u64 phys_size;
+        efi_time_t create_time;
+        efi_time_t last_access_time;
+        efi_time_t modification_time;
+        __aligned_u64 attribute;
+        efi_char16_t filename[1];
+} efi_file_info_t;
+
+typedef struct {
+        u64 revision;
+        void *open;
+        void *close;
+        void *delete;
+        void *read;
+        void *write;
+        void *get_position;
+        void *set_position;
+        void *get_info;
+        void *set_info;
+        void *flush;
+} efi_file_handle_t;
+
+#define EFI_FILE_MODE_READ      0x0000000000000001
+#define EFI_FILE_MODE_WRITE     0x0000000000000002
+#define EFI_FILE_MODE_CREATE    0x8000000000000000
+
 #define EFI_INVALID_TABLE_ADDR          (~0UL)
 
 /*