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fdt_wip.c (204431) fdt_wip.c (204433)
1/*
2 * libfdt - Flat Device Tree manipulation
3 * Copyright (C) 2006 David Gibson, IBM Corporation.
4 *
5 * libfdt is dual licensed: you can use it either under the terms of
6 * the GPL, or the BSD license, at your option.
7 *
8 * a) This library is free software; you can redistribute it and/or

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89 if (! prop)
90 return len;
91
92 _fdt_nop_region(prop, len + sizeof(*prop));
93
94 return 0;
95}
96
1/*
2 * libfdt - Flat Device Tree manipulation
3 * Copyright (C) 2006 David Gibson, IBM Corporation.
4 *
5 * libfdt is dual licensed: you can use it either under the terms of
6 * the GPL, or the BSD license, at your option.
7 *
8 * a) This library is free software; you can redistribute it and/or

--- 80 unchanged lines hidden (view full) ---

89 if (! prop)
90 return len;
91
92 _fdt_nop_region(prop, len + sizeof(*prop));
93
94 return 0;
95}
96
97int _fdt_node_end_offset(void *fdt, int nodeoffset)
97int _fdt_node_end_offset(void *fdt, int offset)
98{
98{
99 int level = 0;
100 uint32_t tag;
101 int offset, nextoffset;
99 int depth = 0;
102
100
103 tag = fdt_next_tag(fdt, nodeoffset, &nextoffset);
104 if (tag != FDT_BEGIN_NODE)
105 return -FDT_ERR_BADOFFSET;
106 do {
107 offset = nextoffset;
108 tag = fdt_next_tag(fdt, offset, &nextoffset);
101 while ((offset >= 0) && (depth >= 0))
102 offset = fdt_next_node(fdt, offset, &depth);
109
103
110 switch (tag) {
111 case FDT_END:
112 return offset;
113
114 case FDT_BEGIN_NODE:
115 level++;
116 break;
117
118 case FDT_END_NODE:
119 level--;
120 break;
121
122 case FDT_PROP:
123 case FDT_NOP:
124 break;
125
126 default:
127 return -FDT_ERR_BADSTRUCTURE;
128 }
129 } while (level >= 0);
130
131 return nextoffset;
104 return offset;
132}
133
134int fdt_nop_node(void *fdt, int nodeoffset)
135{
136 int endoffset;
137
138 endoffset = _fdt_node_end_offset(fdt, nodeoffset);
139 if (endoffset < 0)
140 return endoffset;
141
142 _fdt_nop_region(fdt_offset_ptr_w(fdt, nodeoffset, 0),
143 endoffset - nodeoffset);
144 return 0;
145}
105}
106
107int fdt_nop_node(void *fdt, int nodeoffset)
108{
109 int endoffset;
110
111 endoffset = _fdt_node_end_offset(fdt, nodeoffset);
112 if (endoffset < 0)
113 return endoffset;
114
115 _fdt_nop_region(fdt_offset_ptr_w(fdt, nodeoffset, 0),
116 endoffset - nodeoffset);
117 return 0;
118}