1 #ifndef _FDT_H 2 #define _FDT_H 3 4 #ifndef __ASSEMBLY__ 5 6 struct fdt_header { 7 fdt32_t magic; /* magic word FDT_MAGIC */ 8 fdt32_t totalsize; /* total size of DT block */ 9 fdt32_t off_dt_struct; /* offset to structure */ 10 fdt32_t off_dt_strings; /* offset to strings */ 11 fdt32_t off_mem_rsvmap; /* offset to memory reserve map */ 12 fdt32_t version; /* format version */ 13 fdt32_t last_comp_version; /* last compatible version */ 14 15 /* version 2 fields below */ 16 fdt32_t boot_cpuid_phys; /* Which physical CPU id we're 17 booting on */ 18 /* version 3 fields below */ 19 fdt32_t size_dt_strings; /* size of the strings block */ 20 21 /* version 17 fields below */ 22 fdt32_t size_dt_struct; /* size of the structure block */ 23 }; 24 25 struct fdt_reserve_entry { 26 fdt64_t address; 27 fdt64_t size; 28 }; 29 30 struct fdt_node_header { 31 fdt32_t tag; 32 char name[0]; 33 }; 34 35 struct fdt_property { 36 fdt32_t tag; 37 fdt32_t len; 38 fdt32_t nameoff; 39 char data[0]; 40 }; 41 42 #endif /* !__ASSEMBLY */ 43 44 #define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */ 45 #define FDT_TAGSIZE sizeof(fdt32_t) 46 47 #define FDT_BEGIN_NODE 0x1 /* Start node: full name */ 48 #define FDT_END_NODE 0x2 /* End node */ 49 #define FDT_PROP 0x3 /* Property: name off, 50 size, content */ 51 #define FDT_NOP 0x4 /* nop */ 52 #define FDT_END 0x9 53 54 #define FDT_V1_SIZE (7*sizeof(fdt32_t)) 55 #define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t)) 56 #define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t)) 57 #define FDT_V16_SIZE FDT_V3_SIZE 58 #define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t)) 59 60 /* adding a ramdisk needs 0x44 bytes in version 2008.10 */ 61 #define FDT_RAMDISK_OVERHEAD 0x80 62 #endif /* _FDT_H */ 63