1 #ifndef _FDT_H 2 #define _FDT_H 3 /* 4 * libfdt - Flat Device Tree manipulation 5 * Copyright (C) 2006 David Gibson, IBM Corporation. 6 * Copyright 2012 Kim Phillips, Freescale Semiconductor. 7 * 8 * SPDX-License-Identifier: GPL-2.0+ BSD-2-Clause 9 */ 10 11 #ifndef __ASSEMBLY__ 12 13 struct fdt_header { 14 fdt32_t magic; /* magic word FDT_MAGIC */ 15 fdt32_t totalsize; /* total size of DT block */ 16 fdt32_t off_dt_struct; /* offset to structure */ 17 fdt32_t off_dt_strings; /* offset to strings */ 18 fdt32_t off_mem_rsvmap; /* offset to memory reserve map */ 19 fdt32_t version; /* format version */ 20 fdt32_t last_comp_version; /* last compatible version */ 21 22 /* version 2 fields below */ 23 fdt32_t boot_cpuid_phys; /* Which physical CPU id we're 24 booting on */ 25 /* version 3 fields below */ 26 fdt32_t size_dt_strings; /* size of the strings block */ 27 28 /* version 17 fields below */ 29 fdt32_t size_dt_struct; /* size of the structure block */ 30 }; 31 32 struct fdt_reserve_entry { 33 fdt64_t address; 34 fdt64_t size; 35 }; 36 37 struct fdt_node_header { 38 fdt32_t tag; 39 char name[0]; 40 }; 41 42 struct fdt_property { 43 fdt32_t tag; 44 fdt32_t len; 45 fdt32_t nameoff; 46 char data[0]; 47 }; 48 49 #endif /* !__ASSEMBLY */ 50 51 #define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */ 52 #define FDT_TAGSIZE sizeof(fdt32_t) 53 54 #define FDT_BEGIN_NODE 0x1 /* Start node: full name */ 55 #define FDT_END_NODE 0x2 /* End node */ 56 #define FDT_PROP 0x3 /* Property: name off, 57 size, content */ 58 #define FDT_NOP 0x4 /* nop */ 59 #define FDT_END 0x9 60 61 #define FDT_V1_SIZE (7*sizeof(fdt32_t)) 62 #define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t)) 63 #define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t)) 64 #define FDT_V16_SIZE FDT_V3_SIZE 65 #define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t)) 66 67 #endif /* _FDT_H */ 68