author | William Roberts <williamr@symbian.org> |
Fri, 01 Oct 2010 11:40:18 +0100 | |
changeset 2 | 048b58430d46 |
parent 0 | 5de814552237 |
permissions | -rw-r--r-- |
0
5de814552237
Initial contribution supporting NaviEngine 1
Ryan Harkin <ryan.harkin@nokia.com>
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/* |
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* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* base\bsp\hwip_nec_naviengine\ne1_tb_bootloader\bootloader_variant.cpp |
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* |
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*/ |
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|
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|
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#define FILE_ID 0x464C5348 |
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#include "bootldr.h" |
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#include "ubootldrldd.h" |
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#include <e32std.h> |
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#include <e32std_private.h> |
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#include <e32svr.h> |
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#include <e32cons.h> |
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#include <f32file.h> |
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#include <hal.h> |
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#include <u32hal.h> |
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#include "flash_nor.h" |
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#include <d32comm.h> |
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|
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TLinAddr ConfigBlockAddress; // Virtual address |
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|
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// RAM copy of config block |
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SBootloaderConfig aConfigBlock; |
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|
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// Invoke the flash_nor routines to read a block containing the bootloader |
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// configuration. |
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// |
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// If the block is found to be invalid, create a new block from defaults. |
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// |
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GLDEF_C void ReadConfig() |
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{ |
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TLinAddr FlashAddr; |
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FlashAddr = (TLinAddr) GetFlashChunk(); // Map flash |
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|
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// Config block is last block of the bootloader space before a flashed image |
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ConfigBlockAddress = FlashAddr + KNORFlashMaxBootloaderSize - KFlashEraseBlockSize; |
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|
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// Make sure the region is not blank and that the first word has the |
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// bootloader cfg uid on it. |
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if (!BlankCheck(ConfigBlockAddress, KConfigBlockSize) && |
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(*(volatile TUint32*)ConfigBlockAddress == KUidUBootldrCfgMagic)) |
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{ |
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// Copy the config block out of flash and into ram |
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volatile TUint32* j=(volatile TUint32*)ConfigBlockAddress; |
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TUint32* dest = (TUint32 *)&aConfigBlock; |
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|
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for (TUint i=0 ; i<KConfigBlockSize ; ++i, ++dest, ++j) |
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*dest=*j; |
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} |
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else |
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{ |
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PrintToScreen(_L("Config area was blank, setting defaults\r\n")); |
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|
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aConfigBlock.iMagic = KUidUBootldrCfgMagic; |
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aConfigBlock.iPortNumber = KUartPortNumber; |
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aConfigBlock.iBaudRate = EBps115200; |
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aConfigBlock.iLoadDevice = ELoadDrive; |
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|
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// Write the new block to flash |
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WriteConfig(); |
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} |
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|
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// Configure bootloader from config block |
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SerialDownloadPort = aConfigBlock.iPortNumber; |
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SerialBaud = aConfigBlock.iBaudRate; |
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LoadDevice = (TLoadDevice)aConfigBlock.iLoadDevice; |
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|
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// The H4 supports downloading images via the USB Mass Storage method. As |
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// the method of detecting a USB-MS boot is rather awkward the task is |
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// performed at a variant level. |
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if (LoadDevice==ELoadUSBMS) |
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{ |
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// Read the custom restart reason from the hal |
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TInt aRestartReason; |
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TInt r = HAL::Get(HAL::ECustomRestartReason, aRestartReason); |
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if (r!=KErrNone) |
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{ |
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PrintToScreen(_L("Failed to read restart reason from HAL (0x%x)"), r); |
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RDebug::Printf("Failed to read restart reason from HAL (0x%x)", r); |
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BOOT_FAULT(); |
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} |
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// Decode the On H4 the restart reasons get shifted internally |
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if (aRestartReason & (KtRestartCustomRestartUSBLoader >> KsRestartCustomRestartReasons)) |
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{ |
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// In the boot scenario the indicate that the bootloader should |
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// check for an appropriate file before restarting the USB Mass |
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// Storage application. |
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LoadDevice = EBootUSBMS; |
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} |
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} |
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} |
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|
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|
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// Write the config block back into flash |
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GLDEF_C void WriteConfig() |
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{ |
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aConfigBlock.iPortNumber=SerialDownloadPort; |
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aConfigBlock.iBaudRate =SerialBaud; |
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aConfigBlock.iLoadDevice=LoadDevice; |
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// XXX Generate a checksum for the config block (excluding the checksum) |
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|
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TInt r = Erase(ConfigBlockAddress, KFlashEraseBlockSize); |
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if (r!=KErrNone) |
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{ |
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PrintToScreen(_L("Config block failed erase (0x%x)"), r); |
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RDebug::Printf("Config block failed erase (0x%x)", r); |
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BOOT_FAULT(); |
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} |
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|
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r=Write(ConfigBlockAddress, KFlashEraseBlockSize, (TUint32 *)&aConfigBlock); |
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if (r!=KErrNone) |
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{ |
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PrintToScreen(_L("Config block failed write (0x%x)"), r); |
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RDebug::Printf("Config block failed write (0x%x)", r); |
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BOOT_FAULT(); |
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} |
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} |
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|
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134 |
|
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GLDEF_C void VariantInit() |
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/** |
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* Can place variant code here. |
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138 |
*/ |
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139 |
{ |
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// Set the bootloader configuration based on values saved in Flash |
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ReadConfig(); |
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142 |
|
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// Other variant actions e.g. print out the board information |
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144 |
|
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145 |
return; |
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} |