BiosLoader.h

00001 /*
00002  *  Copyright 2014 Embedded Artists AB
00003  *
00004  *  Licensed under the Apache License, Version 2.0 (the "License");
00005  *  you may not use this file except in compliance with the License.
00006  *  You may obtain a copy of the License at
00007  *
00008  *    http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  *  Unless required by applicable law or agreed to in writing, software
00011  *  distributed under the License is distributed on an "AS IS" BASIS,
00012  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  *  See the License for the specific language governing permissions and
00014  *  limitations under the License.
00015  */
00016 
00017 #ifndef BIOSLOADER_H
00018 #define BIOSLOADER_H
00019 
00020 #include "mbed.h"
00021 #include "DMBoard.h"
00022 #include "BiosDisplay.h"
00023 #include "BiosTouch.h"
00024 #include "bios.h"
00025 
00026 /**
00027  * Unpacks and prepares the BIOS code.
00028  */
00029 class BiosLoader {
00030 public:
00031     
00032     /** Get the only instance of the BiosLoader
00033      *
00034      *  @returns The BIOS
00035      */
00036     static BiosLoader& instance()
00037     {
00038         static BiosLoader singleton;
00039         return singleton;
00040     }
00041   
00042 
00043     void getMacAddress(char mac[6]);
00044     bool isKnownSPIFIMemory(uint8_t mfgr, uint8_t devType, uint8_t devID, uint32_t memSize, uint32_t* eraseBlockSize);
00045     void handleI2CInterrupt();    
00046 
00047     void getBiosStats(uint8_t& type, uint8_t& major, uint8_t& minor, uint8_t& rev);
00048 
00049     friend class BiosDisplay;
00050     friend class BiosTouch;
00051     friend class DMBoard;
00052 
00053 private:
00054 
00055     bool _initialized;
00056 
00057     bios_header_t _bios;
00058     void* _biosData;
00059     uint8_t* _conf;
00060     uint32_t _confSize;
00061     uint32_t _stats;
00062 
00063     explicit BiosLoader();
00064     // hide copy constructor
00065     BiosLoader(const BiosLoader&);
00066     // hide assign operator
00067     BiosLoader& operator=(const BiosLoader&);
00068     ~BiosLoader();
00069 
00070     /** Loads, verifies and prepares the BIOS
00071      *
00072      *  @returns
00073      *       Ok on success
00074      *       An error code on failure
00075      */
00076     DMBoard::BoardError init();
00077     DMBoard::BoardError readBIOS(uint8_t** data, uint32_t* size);
00078     DMBoard::BoardError params(bios_header_t** header, void** instanceData);
00079     
00080     void resetI2C();
00081 };
00082 
00083 #endif /* BIOSLOADER_H */