arch/powerpc/boot/flatdevtree_misc.c

   1 /*
   2  * This file does the necessary interface mapping between the bootwrapper
   3  * device tree operations and the interface provided by shared source
   4  * files flatdevicetree.[ch].
   5  *
   6  * Author: Mark A. Greer <mgreer@mvista.com>
   7  *
   8  * 2006 (c) MontaVista Software, Inc.  This file is licensed under
   9  * the terms of the GNU General Public License version 2.  This program
  10  * is licensed "as is" without any warranty of any kind, whether express
  11  * or implied.
  12  */
  13 #include <stddef.h>
  14 #include "flatdevtree.h"
  15 #include "ops.h"
  16
  17 static struct ft_cxt cxt;
  18
  19 static void *fdtm_finddevice(const char *name)
  20 {
  21         return ft_find_device(&cxt, NULL, name);
  22 }
  23
  24 static int fdtm_getprop(const void *phandle, const char *propname,
  25                         void *buf, const int buflen)
  26 {
  27         return ft_get_prop(&cxt, phandle, propname, buf, buflen);
  28 }
  29
  30 static int fdtm_setprop(const void *phandle, const char *propname,
  31                         const void *buf, const int buflen)
  32 {
  33         return ft_set_prop(&cxt, phandle, propname, buf, buflen);
  34 }
  35
  36 static void *fdtm_get_parent(const void *phandle)
  37 {
  38         return ft_get_parent(&cxt, phandle);
  39 }
  40
  41 static void *fdtm_create_node(const void *phandle, const char *name)
  42 {
  43         return ft_create_node(&cxt, phandle, name);
  44 }
  45
  46 static void *fdtm_find_node_by_prop_value(const void *prev,
  47                                           const char *propname,
  48                                           const char *propval,
  49                                           int proplen)
  50 {
  51         return ft_find_node_by_prop_value(&cxt, prev, propname,
  52                                           propval, proplen);
  53 }
  54
  55 static unsigned long fdtm_finalize(void)
  56 {
  57         ft_end_tree(&cxt);
  58         return (unsigned long)cxt.bph;
  59 }
  60
  61 static char *fdtm_get_path(const void *phandle, char *buf, int len)
  62 {
  63         return ft_get_path(&cxt, phandle, buf, len);
  64 }
  65
  66 int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device)
  67 {
  68         dt_ops.finddevice = fdtm_finddevice;
  69         dt_ops.getprop = fdtm_getprop;
  70         dt_ops.setprop = fdtm_setprop;
  71         dt_ops.get_parent = fdtm_get_parent;
  72         dt_ops.create_node = fdtm_create_node;
  73         dt_ops.find_node_by_prop_value = fdtm_find_node_by_prop_value;
  74         dt_ops.finalize = fdtm_finalize;
  75         dt_ops.get_path = fdtm_get_path;
  76
  77         return ft_open(&cxt, dt_blob, max_size, max_find_device,
  78                         platform_ops.realloc);
  79 }