arch/powerpc/boot/flatdevtree.h

   1 /*
   2  * This program is free software; you can redistribute it and/or modify
   3  * it under the terms of the GNU General Public License as published by
   4  * the Free Software Foundation; either version 2 of the License, or
   5  * (at your option) any later version.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program; if not, write to the Free Software
  14  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  15  */
  16
  17 #ifndef FLATDEVTREE_H
  18 #define FLATDEVTREE_H
  19
  20 #include "types.h"
  21
  22 /* Definitions used by the flattened device tree */
  23 #define OF_DT_HEADER            0xd00dfeed      /* marker */
  24 #define OF_DT_BEGIN_NODE        0x1     /* Start of node, full name */
  25 #define OF_DT_END_NODE          0x2     /* End node */
  26 #define OF_DT_PROP              0x3     /* Property: name off, size, content */
  27 #define OF_DT_NOP               0x4     /* nop */
  28 #define OF_DT_END               0x9
  29
  30 #define OF_DT_VERSION           0x10
  31
  32 struct boot_param_header {
  33         u32 magic;              /* magic word OF_DT_HEADER */
  34         u32 totalsize;          /* total size of DT block */
  35         u32 off_dt_struct;      /* offset to structure */
  36         u32 off_dt_strings;     /* offset to strings */
  37         u32 off_mem_rsvmap;     /* offset to memory reserve map */
  38         u32 version;            /* format version */
  39         u32 last_comp_version;  /* last compatible version */
  40         /* version 2 fields below */
  41         u32 boot_cpuid_phys;    /* Physical CPU id we're booting on */
  42         /* version 3 fields below */
  43         u32 dt_strings_size;    /* size of the DT strings block */
  44 };
  45
  46 #endif /* FLATDEVTREE_H */