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https://review.haiku-os.org/haiku
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d24ddec4e4
* Add header file to support of_support.cpp * Add support functions to obtain address and size cell lengths * Small style cleanups * Add support for G5 PowerPC cpus... * Refactor memory region code to be aware of 64-bit OF addresses. As-is the boot loader wouldn't start on G5 systems because OpenFirmware memory base addresses are stored as two 32-bit unsigned int 'cells' vs one 32-bit unsigned int 'cell' on G3/G4. I removed the static struct and replaced it with a template and pass uint32 or uint64 depending on the address cell size. Thanks for the idea DeadYak! git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42486 a95241bf-73f2-0310-859d-f6bbb57e9c96
86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
/*
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* Copyright 2003, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef OPEN_FIRMWARE_H
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#define OPEN_FIRMWARE_H
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#include <SupportDefs.h>
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#define OF_FAILED (-1)
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/* global device tree/properties access */
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extern int gChosen;
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template<typename addressSize>
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struct of_region
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{
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addressSize base;
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uint32 size;
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};
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struct of_arguments {
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const char *name;
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int num_args;
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int num_returns;
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int data[0];
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#ifdef __cplusplus
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int &Argument(int index) { return data[index]; }
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int &ReturnValue(int index) { return data[num_args + index]; }
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#endif
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern status_t of_init(int (*openFirmwareEntry)(void *));
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/* device tree functions */
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extern int of_finddevice(const char *device);
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extern int of_child(int node);
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extern int of_peer(int node);
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extern int of_parent(int node);
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extern int of_instance_to_path(int instance, char *pathBuffer, int bufferSize);
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extern int of_instance_to_package(int instance);
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extern int of_getprop(int package, const char *property, void *buffer,
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int bufferSize);
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extern int of_setprop(int package, const char *property, const void *buffer,
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int bufferSize);
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extern int of_nextprop(int package, const char *previousProperty,
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char *nextProperty);
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extern int of_getproplen(int package, const char *property);
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extern int of_package_to_path(int package, char *pathBuffer, int bufferSize);
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/* I/O functions */
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extern int of_open(const char *nodeName);
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extern void of_close(int handle);
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extern int of_read(int handle, void *buffer, int bufferSize);
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extern int of_write(int handle, const void *buffer, int bufferSize);
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extern int of_seek(int handle, off_t pos);
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/* memory functions */
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extern int of_release(void *virtualAddress, int size);
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extern void *of_claim(void *virtualAddress, int size, int align);
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/* misc functions */
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extern int of_call_client_function(const char *method, int numArgs,
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int numReturns, ...);
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extern int of_interpret(const char *command, int numArgs, int numReturns, ...);
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extern int of_call_method(int handle, const char *method, int numArgs,
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int numReturns, ...);
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extern int of_test(const char *service);
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extern int of_milliseconds(void);
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extern void of_exit(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* OPEN_FIRMWARE_H */
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