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/*
* Copyright (c) 2013 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Anthony Gutierrez
*/
#ifndef __DTB_OBJECT_HH__
#define __DTB_OBJECT_HH__
#include "base/loader/object_file.hh"
/** @file
* This implements an object file format to support loading
* and modifying flattened device tree blobs for use with
* current and future ARM Linux kernels.
*/
class DtbObject : public ObjectFile
{
protected:
DtbObject(const std::string &_filename, size_t _len, uint8_t *_data,
Arch _arch, OpSys _opSys);
/** Bool marking if this dtb file has replaced the original
* read in DTB file with a new modified buffer
*/
bool fileDataMmapped;
public:
virtual ~DtbObject();
/** Adds the passed in Command Line options for the kernel
* to the proper location in the device tree.
* @param _args command line to append
* @param len length of the command line string
* @return returns true on success, false otherwise
*/
bool addBootCmdLine(const char* _args, size_t len);
/** Parse the DTB file enough to find the provided release
* address and return it.
* @return release address for SMP boot
*/
Addr findReleaseAddr();
bool loadAllSymbols(SymbolTable *symtab, Addr base = 0,
Addr offset = 0, Addr addrMask = maxAddr);
bool loadGlobalSymbols(SymbolTable *symtab, Addr base = 0,
Addr offset = 0, Addr addrMask = maxAddr);
bool loadLocalSymbols(SymbolTable *symtab, Addr base = 0,
Addr offset = 0, Addr addrMask = maxAddr);
/** Static function that tries to load file as a
* flattened device tree blob.
* @param fname path to file
* @param len length of file
* @param data mmap'ed data buffer containing file contents
* @return ObjectFile representing closest match of file type
*/
static ObjectFile *tryFile(const std::string &fname,
size_t len, uint8_t *data);
};
#endif //__DTB_OBJECT_HH__
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