projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| af6074fc | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
| 3cfc535c AS |
2 | /* |
| 3 | * Definitions for building a device tree by calling into the | |
| 4 | * Open Firmware PROM. | |
| 5 | * | |
| 6 | * Copyright (C) 2010 Andres Salomon <dilinger@queued.net> | |
| 3cfc535c AS |
7 | */ |
| 8 | ||
| 9 | #ifndef _LINUX_OF_PDT_H | |
| 10 | #define _LINUX_OF_PDT_H | |
| 11 | ||
| f90c34bd AS |
12 | /* overridable operations for calling into the PROM */ |
| 13 | struct of_pdt_ops { | |
| 14 | /* | |
| 15 | * buf should be 32 bytes; return 0 on success. | |
| 16 | * If prev is NULL, the first property will be returned. | |
| 17 | */ | |
| 18 | int (*nextprop)(phandle node, char *prev, char *buf); | |
| 19 | ||
| 20 | /* for both functions, return proplen on success; -1 on error */ | |
| 21 | int (*getproplen)(phandle node, const char *prop); | |
| 22 | int (*getproperty)(phandle node, const char *prop, char *buf, | |
| 23 | int bufsize); | |
| 24 | ||
| 25 | /* phandles are 0 if no child or sibling exists */ | |
| 26 | phandle (*getchild)(phandle parent); | |
| 27 | phandle (*getsibling)(phandle node); | |
| e2f2a93b AS |
28 | |
| 29 | /* return 0 on success; fill in 'len' with number of bytes in path */ | |
| 30 | int (*pkg2path)(phandle node, char *buf, const int buflen, int *len); | |
| f90c34bd AS |
31 | }; |
| 32 | ||
| 3cfc535c AS |
33 | extern void *prom_early_alloc(unsigned long size); |
| 34 | ||
| 35 | /* for building the device tree */ | |
| f90c34bd | 36 | extern void of_pdt_build_devicetree(phandle root_node, struct of_pdt_ops *ops); |
| 3cfc535c | 37 | |
| 3cfc535c | 38 | #endif /* _LINUX_OF_PDT_H */ |