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Andres Salomon3cfc5352010-10-10 21:42:33 -06001/*
2 * Definitions for building a device tree by calling into the
3 * Open Firmware PROM.
4 *
5 * Copyright (C) 2010 Andres Salomon <dilinger@queued.net>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 */
12
13#ifndef _LINUX_OF_PDT_H
14#define _LINUX_OF_PDT_H
15
Andres Salomonf90c34bd2010-10-10 21:49:45 -060016/* overridable operations for calling into the PROM */
17struct of_pdt_ops {
18 /*
19 * buf should be 32 bytes; return 0 on success.
20 * If prev is NULL, the first property will be returned.
21 */
22 int (*nextprop)(phandle node, char *prev, char *buf);
23
24 /* for both functions, return proplen on success; -1 on error */
25 int (*getproplen)(phandle node, const char *prop);
26 int (*getproperty)(phandle node, const char *prop, char *buf,
27 int bufsize);
28
29 /* phandles are 0 if no child or sibling exists */
30 phandle (*getchild)(phandle parent);
31 phandle (*getsibling)(phandle node);
Andres Salomone2f2a932010-10-10 21:52:57 -060032
33 /* return 0 on success; fill in 'len' with number of bytes in path */
34 int (*pkg2path)(phandle node, char *buf, const int buflen, int *len);
Andres Salomonf90c34bd2010-10-10 21:49:45 -060035};
36
Andres Salomon3cfc5352010-10-10 21:42:33 -060037extern void *prom_early_alloc(unsigned long size);
38
39/* for building the device tree */
Andres Salomonf90c34bd2010-10-10 21:49:45 -060040extern void of_pdt_build_devicetree(phandle root_node, struct of_pdt_ops *ops);
Andres Salomon3cfc5352010-10-10 21:42:33 -060041
Grant Likely5063e252014-10-03 16:28:27 +010042extern void (*of_pdt_build_more)(struct device_node *dp);
Andres Salomon3cfc5352010-10-10 21:42:33 -060043
44#endif /* _LINUX_OF_PDT_H */