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