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/* SPDX-License-Identifier: GPL-2.0+ */ /* * Definitions for building a device tree by calling into the * Open Firmware PROM. * * Copyright (C) 2010 Andres Salomon <dilinger@queued.net> */ #ifndef _LINUX_OF_PDT_H #define _LINUX_OF_PDT_H /* overridable operations for calling into the PROM */ struct of_pdt_ops { /* * buf should be 32 bytes; return 0 on success. * If prev is NULL, the first property will be returned. */ int (*nextprop)(phandle node, char *prev, char *buf); /* for both functions, return proplen on success; -1 on error */ int (*getproplen)(phandle node, const char *prop); int (*getproperty)(phandle node, const char *prop, char *buf, int bufsize); /* phandles are 0 if no child or sibling exists */ phandle (*getchild)(phandle parent); phandle (*getsibling)(phandle node); /* return 0 on success; fill in 'len' with number of bytes in path */ int (*pkg2path)(phandle node, char *buf, const int buflen, int *len); }; extern void *prom_early_alloc(unsigned long size); /* for building the device tree */ extern void of_pdt_build_devicetree(phandle root_node, struct of_pdt_ops *ops); #endif /* _LINUX_OF_PDT_H */
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