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git.ipfire.org Git - people/ms/u-boot.git/blob - libfdt/fdt_wip.c
2 * libfdt - Flat Device Tree manipulation
3 * Copyright (C) 2006 David Gibson, IBM Corporation.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public License
7 * as published by the Free Software Foundation; either version 2.1 of
8 * the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 #include "libfdt_env.h"
24 #include "libfdt_internal.h"
26 int fdt_setprop_inplace(void *fdt
, int nodeoffset
, const char *name
,
27 const void *val
, int len
)
32 propval
= fdt_getprop(fdt
, nodeoffset
, name
, &proplen
);
37 return -FDT_ERR_NOSPACE
;
39 memcpy(propval
, val
, len
);
43 static void nop_region(void *start
, int len
)
47 for (p
= start
; (void *)p
< (start
+ len
); p
++)
48 *p
= cpu_to_fdt32(FDT_NOP
);
51 int fdt_nop_property(void *fdt
, int nodeoffset
, const char *name
)
53 struct fdt_property
*prop
;
56 prop
= fdt_get_property(fdt
, nodeoffset
, name
, &len
);
60 nop_region(prop
, len
+ sizeof(*prop
));
65 int _fdt_node_end_offset(void *fdt
, int nodeoffset
)
69 int offset
, nextoffset
;
71 tag
= fdt_next_tag(fdt
, nodeoffset
, &nextoffset
, NULL
);
72 if (tag
!= FDT_BEGIN_NODE
)
73 return -FDT_ERR_BADOFFSET
;
76 tag
= fdt_next_tag(fdt
, offset
, &nextoffset
, NULL
);
95 return -FDT_ERR_BADSTRUCTURE
;
102 int fdt_nop_node(void *fdt
, int nodeoffset
)
106 endoffset
= _fdt_node_end_offset(fdt
, nodeoffset
);
110 nop_region(fdt_offset_ptr(fdt
, nodeoffset
, 0), endoffset
- nodeoffset
);
115 * Replace a reserve map entry in the nth slot.
117 int fdt_replace_reservemap_entry(void *fdt
, int n
, uint64_t addr
, uint64_t size
)
119 struct fdt_reserve_entry
*re
;
124 err
= fdt_num_reservemap(fdt
, &used
, &total
);
129 return -FDT_ERR_NOSPACE
;
130 re
= (struct fdt_reserve_entry
*)
131 (fdt
+ fdt_off_mem_rsvmap(fdt
) +
132 (n
* sizeof(struct fdt_reserve_entry
)));
133 re
->address
= cpu_to_fdt64(addr
);
134 re
->size
= cpu_to_fdt64(size
);