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