FreeBSD/Linux Kernel Cross Reference
sys/contrib/libfdt/fdt.h

     #ifndef FDT_H
     #define FDT_H
     /*
      * libfdt - Flat Device Tree manipulation
      * Copyright (C) 2006 David Gibson, IBM Corporation.
      * Copyright 2012 Kim Phillips, Freescale Semiconductor.
      *
      * libfdt is dual licensed: you can use it either under the terms of
      * the GPL, or the BSD license, at your option.
     *
     *  a) This library is free software; you can redistribute it and/or
     *     modify it under the terms of the GNU General Public License as
     *     published by the Free Software Foundation; either version 2 of the
     *     License, or (at your option) any later version.
     *
     *     This library is distributed in the hope that it will be useful,
     *     but WITHOUT ANY WARRANTY; without even the implied warranty of
     *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     *     GNU General Public License for more details.
     *
     *     You should have received a copy of the GNU General Public
     *     License along with this library; if not, write to the Free
     *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
     *     MA 02110-1301 USA
     *
     * Alternatively,
     *
     *  b) Redistribution and use in source and binary forms, with or
     *     without modification, are permitted provided that the following
     *     conditions are met:
     *
     *     1. Redistributions of source code must retain the above
     *        copyright notice, this list of conditions and the following
     *        disclaimer.
     *     2. Redistributions in binary form must reproduce the above
     *        copyright notice, this list of conditions and the following
     *        disclaimer in the documentation and/or other materials
     *        provided with the distribution.
     *
     *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
     *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
     *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
     *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */
    
    #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[0];
    };
    
    struct fdt_property {
            fdt32_t tag;
            fdt32_t len;
            fdt32_t nameoff;
            char data[0];
    };
    
    #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))
   
   #endif /* FDT_H */

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