fdt.h

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/* SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause) */
#ifndef FDT_H
#define FDT_H
/*
 * libfdt - Flat Device Tree manipulation
 * Copyright (C) 2006 David Gibson, IBM Corporation.
 * Copyright 2012 Kim Phillips, Freescale Semiconductor.
 */
 
#ifdef __cplusplus
extern "C" {
#endif// __cplusplus
 
#ifndef __ASSEMBLY__
 
struct fdt_header {
    fdt32_t magic;             /* magic word FDT_MAGIC */
    fdt32_t totalsize;         /* total size of DT block */
    fdt32_t off_dt_struct;     /* offset to structure */
    fdt32_t off_dt_strings;    /* offset to strings */
    fdt32_t off_mem_rsvmap;    /* offset to memory reserve map */
    fdt32_t version;           /* format version */
    fdt32_t last_comp_version; /* last compatible version */
 
    /* version 2 fields below */
    fdt32_t boot_cpuid_phys; /* Which physical CPU id we're
                        booting on */
    /* version 3 fields below */
    fdt32_t size_dt_strings; /* size of the strings block */
 
    /* version 17 fields below */
    fdt32_t size_dt_struct; /* size of the structure block */
};
 
struct fdt_reserve_entry {
    fdt64_t address;
    fdt64_t size;
};
 
struct fdt_node_header {
    fdt32_t tag;
    char name[];
};
 
struct fdt_property {
    fdt32_t tag;
    fdt32_t len;
    fdt32_t nameoff;
    char data[];
};
 
#endif /* !__ASSEMBLY */
 
#define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */
#define FDT_TAGSIZE sizeof(fdt32_t)
 
#define FDT_BEGIN_NODE 0x1 /* Start node: full name */
#define FDT_END_NODE 0x2   /* End node */
#define FDT_PROP \
    0x3             /* Property: name off,
                       size, content */
#define FDT_NOP 0x4 /* nop */
#define FDT_END 0x9
 
#define FDT_V1_SIZE (7 * sizeof(fdt32_t))
#define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t))
#define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t))
#define FDT_V16_SIZE FDT_V3_SIZE
#define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t))
 
#ifdef __cplusplus
}
#endif// __cplusplus
 
#endif /* FDT_H */