1 files changed, 66 insertions, 36 deletions
diff --git a/src/gpt.h b/src/gpt.h
index 6ae7866..80742ea 100644
--- a/src/gpt.h
+++ b/src/gpt.h
@@ -1,43 +1,73 @@
-
-#define PACKED __attribute__ ( packed )
-
-#define GUID(a)
+#define PACKED __attribute__((packed))
 
 #define TYPE_EMPTY  "00000000-0000-0000-0000-000000000000"
 #define TYPE_SYSTEM "C12A7328-F81F-11D2-BA4B-00A0C93EC93B"
 
-typedef PACKED struct {
-	uint8_t d[16];
-} guid;
-
-typedef PACKED struct {
-	guid type;
-	guid label;
-	uint64_t start;
-	uint64_t end;
-	uint64_t flags;
-#define FLAG_SYSTEM 1
-	uint8_t name[72];
+typedef PACKED struct
+{
+  uint8_t d[16];
+} GUID;
+
+#define GPT_ENTRY_FLAG_SYSTEM 1
+typedef PACKED struct
+{
+  GUID type;
+  GUID label;
+  uint64_t start;
+  uint64_t end;
+  uint64_t flags;
+  uint8_t name[72];
 } GPT_entry;
 
-
-typedef PACKED struct {
-
-
-
-typedef PACKED struct {
-uint8_t boot_code[440];
-uint8_t uid[4];
-uint8_t reserved[2];
-MBR_entry entry[4];
-uint8_t signature[2];
-}
-
-
-
-
-
-
+#define GPT_HEADER_SIGNATURE "EFI PART"
+#define GPT_HEADER_REVISION_EFI10 0x00010000
+
+typedef PACKED struct
+{
+  uint8_t signature[8];
+  uint32_t revision;
+  uint32_t header_size;
+  uint32_t header_crc;
+  uint8_t reserved[20];
+  uint64_t my_lba;
+  uint64_t alternate_lba;
+  uint64_t first_usable_lba;
+  uint64_t last_usable_lba;
+  GUID disk_guid;
+  uint64_t partition_entry_lba;
+  uint32_t n_partition_entries;
+  uint32_t partition_entry_size;
+  uint32_t partition_entry_crc;
+} GPT_header;
+
+
+
+
+#define MBR_PARTITION_TYPE_EFI 0xee
+#define MBR_PARTITION_BOOTABLE 0x80
+
+typedef PACKED struct
+{
+  uint8_t head;
+  uint8_t sector;
+  uint8_t track;
+} CHS;
+
+typedef PACKED struct
+{
+  uint8_t bootable;
+  CHS chs_start;
+  uint8_t system;
+  CHS chs_end;
+  uint32_t start;
+  uint32_t size;
+} MBR_entry;
+
+typedef PACKED struct
+{
+  uint8_t boot_code[440];
+  uint8_t uid[4];
+  uint8_t reserved[2];
+  MBR_entry entry[4];
+  uint8_t signature[2];
 } MBR;
-
-