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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 <[email protected]>
- */
- #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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