1553125dfSNikos Nikoleris /* SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause) */ 2553125dfSNikos Nikoleris #ifndef FDT_H 3553125dfSNikos Nikoleris #define FDT_H 4a322d4c5SAndrew Jones /* 5a322d4c5SAndrew Jones * libfdt - Flat Device Tree manipulation 6a322d4c5SAndrew Jones * Copyright (C) 2006 David Gibson, IBM Corporation. 7a322d4c5SAndrew Jones * Copyright 2012 Kim Phillips, Freescale Semiconductor. 8a322d4c5SAndrew Jones */ 9a322d4c5SAndrew Jones 10*0cc3a351SSean Christopherson #ifndef __ASSEMBLER__ 11a322d4c5SAndrew Jones 12a322d4c5SAndrew Jones struct fdt_header { 13a322d4c5SAndrew Jones fdt32_t magic; /* magic word FDT_MAGIC */ 14a322d4c5SAndrew Jones fdt32_t totalsize; /* total size of DT block */ 15a322d4c5SAndrew Jones fdt32_t off_dt_struct; /* offset to structure */ 16a322d4c5SAndrew Jones fdt32_t off_dt_strings; /* offset to strings */ 17a322d4c5SAndrew Jones fdt32_t off_mem_rsvmap; /* offset to memory reserve map */ 18a322d4c5SAndrew Jones fdt32_t version; /* format version */ 19a322d4c5SAndrew Jones fdt32_t last_comp_version; /* last compatible version */ 20a322d4c5SAndrew Jones 21a322d4c5SAndrew Jones /* version 2 fields below */ 22a322d4c5SAndrew Jones fdt32_t boot_cpuid_phys; /* Which physical CPU id we're 23a322d4c5SAndrew Jones booting on */ 24a322d4c5SAndrew Jones /* version 3 fields below */ 25a322d4c5SAndrew Jones fdt32_t size_dt_strings; /* size of the strings block */ 26a322d4c5SAndrew Jones 27a322d4c5SAndrew Jones /* version 17 fields below */ 28a322d4c5SAndrew Jones fdt32_t size_dt_struct; /* size of the structure block */ 29a322d4c5SAndrew Jones }; 30a322d4c5SAndrew Jones 31a322d4c5SAndrew Jones struct fdt_reserve_entry { 32a322d4c5SAndrew Jones fdt64_t address; 33a322d4c5SAndrew Jones fdt64_t size; 34a322d4c5SAndrew Jones }; 35a322d4c5SAndrew Jones 36a322d4c5SAndrew Jones struct fdt_node_header { 37a322d4c5SAndrew Jones fdt32_t tag; 38a322d4c5SAndrew Jones char name[0]; 39a322d4c5SAndrew Jones }; 40a322d4c5SAndrew Jones 41a322d4c5SAndrew Jones struct fdt_property { 42a322d4c5SAndrew Jones fdt32_t tag; 43a322d4c5SAndrew Jones fdt32_t len; 44a322d4c5SAndrew Jones fdt32_t nameoff; 45a322d4c5SAndrew Jones char data[0]; 46a322d4c5SAndrew Jones }; 47a322d4c5SAndrew Jones 48*0cc3a351SSean Christopherson #endif /* !__ASSEMBLER__ */ 49a322d4c5SAndrew Jones 50a322d4c5SAndrew Jones #define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */ 51a322d4c5SAndrew Jones #define FDT_TAGSIZE sizeof(fdt32_t) 52a322d4c5SAndrew Jones 53a322d4c5SAndrew Jones #define FDT_BEGIN_NODE 0x1 /* Start node: full name */ 54a322d4c5SAndrew Jones #define FDT_END_NODE 0x2 /* End node */ 55a322d4c5SAndrew Jones #define FDT_PROP 0x3 /* Property: name off, 56a322d4c5SAndrew Jones size, content */ 57a322d4c5SAndrew Jones #define FDT_NOP 0x4 /* nop */ 58a322d4c5SAndrew Jones #define FDT_END 0x9 59a322d4c5SAndrew Jones 60a322d4c5SAndrew Jones #define FDT_V1_SIZE (7*sizeof(fdt32_t)) 61a322d4c5SAndrew Jones #define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t)) 62a322d4c5SAndrew Jones #define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t)) 63a322d4c5SAndrew Jones #define FDT_V16_SIZE FDT_V3_SIZE 64a322d4c5SAndrew Jones #define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t)) 65a322d4c5SAndrew Jones 66553125dfSNikos Nikoleris #endif /* FDT_H */ 67