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之前我们已经实现了Multi-Bin,CE已经可以正常启动运行.但是我们修改的系统设置在重启后就又恢复成初始状态.那是因为我们的注册表是基于RAM的,要实现注册表永久保存就需要实现HIVE注册表.
我们把注册表保存在Nand flash的FAT分区中.
在注册表中,HIVE BOOT SECTION和END HIVE BOOT SECTION直接的注册表内存就保存在HIVE中.
1.添加HIVE组件
Hive-based Registry
2.修改注册表
之前讲Multi-Bin时,HIVE注册表已经实现了,和HIVE相关的注册表设置之前都已经提及了.我们要保存的注册表内容都在system.hv中.
; @CESYSGEN IF FILESYS_FSREGHIVE
; HIVE BOOT SECTION
[HKEY_LOCAL_MACHINE/init/BootVars]
"SystemHive"="Documents and Settings//system.hv"
"ProfileDir"="Documents and Settings"
"Flags"=dword:3 ;等同于 "Start DevMgr"=dword:1,讲注册表保存到ROM中
"RegistryFlags"=dword:1 ;自动刷新system.hv,每次修改设置就自动保存注册表
; END HIVE BOOT SECTION
; @CESYSGEN ENDIF FILESYS_FSREGHIVE
还有个重要的设置就是我们的存储介质,设置MountAsBootable说明注册表保存在该存储设备中,系统启动时就从这里读取注册表内容
[HKEY_LOCAL_MACHINE/System/StorageManager/Profiles/MSFlash/FATFS]
"MountAsROM"=dword:0
"MountHidden"=dword:0
"MountAsBootable"=dword:1
"Flags"=dword:00000014 ;FATFS_FORCE_WRITETHROUGH | FATFS_DISABLE_AUTOSCAN
"EnableWriteBack"=dword:1
"CheckForFormat"=dword:1
完整注册表如下:(讲Multi-Bin已列举过)
; @CESYSGEN IF FILESYS_FSREGHIVE
; HIVE BOOT SECTION
; Valid Bits for Flags registry value
; If no flags are set, the hive will be stored in the object store.
;
; 0x00000001 Start storage manager in boot phase 1 for hive-based registry
; 0x00000002 Start device manager in boot phase 1 for hive-based registry
; 0x00000004 Start storage manager in boot phase 1 for registry in
; external ROM (such as BINFS)
; 0x00000008 Start device manager in boot phase 1 for registry in
; external ROM (such as BINFS)
[HKEY_LOCAL_MACHINE/init/BootVars]
"SystemHive"="Documents and Settings//system.hv"
"ProfileDir"="Documents and Settings"
"Flags"=dword:3 ;equals to "Start DevMgr"=dword:1
"RegistryFlags"=dword:1 ;auto flush system.hv
; END HIVE BOOT SECTION
; @CESYSGEN ENDIF FILESYS_FSREGHIVE
; HIVE BOOT SECTION
; @CESYSGEN IF CE_MODULES_SDNPCID
; Add BinFS to partition table
[HKEY_LOCAL_MACHINE/System/StorageManager/PartitionTable]
"21"="BINFS"
; Default values for binfs. These can be overridden per profile
[HKEY_LOCAL_MACHINE/System/StorageManager/BinFS]
"FriendlyName"="BIN Filesystem"
"Dll"="binfs.dll"
"Paging"=dword:1
"Folder"="BINFS"
[HKEY_LOCAL_MACHINE/Drivers/BuiltIn/MSFlash]
"Profile"="MSFlash"
"IClass"=multi_sz:"{A4E7EDDA-E575-4252-9D6B-4195D48BB865}"
"Order"=dword:0
"FriendlyName"="MSFLASH Driver"
"Dll"="smflash.dll"
"Prefix"="DSK"
"Ioctl"=dword:4
"Flags"=dword:1000
"BootPhase"=dword:0
[HKEY_LOCAL_MACHINE/System/StorageManager/AutoLoad/MSFlash]
"DriverPath"="Drivers//BuiltIn//MSFlash"
; LoadFlags 0x01 == load synchronously
"LoadFlags"=dword:1
"Order"=dword:0
"BootPhase"=dword:0
; @CESYSGEN ENDIF CE_MODULES_SDNPCID
; END HIVE BOOT SECTION
; HIVE BOOT SECTION
; @CESYSGEN IF CE_MODULES_SDNPCID
[HKEY_LOCAL_MACHINE/System/StorageManager/Profiles/MSFlash]
"DefaultFileSystem"="BINFS"
"PartitionDriver"="mspart.dll"
"MountAsROM"=dword:1
"MountHidden"=dword:1
"Folder"="Flash Disk"
"Name"="FLASH Disk Block Device"
"AutoMount"=dword:1
"AutoPart"=dword:1
"BootPhase"=dword:0
"Flags"=dword:1000
"AutoFormat"=dword:1
; Keep FATFS from trying to shadow /Windows
[HKEY_LOCAL_MACHINE/System/StorageManager/Profiles/MSFlash/FATFS]
"MountAsROM"=dword:0
"MountHidden"=dword:0
"MountAsBootable"=dword:1
"Flags"=dword:00000014 ;FATFS_FORCE_WRITETHROUGH | FATFS_DISABLE_AUTOSCAN
"EnableWriteBack"=dword:1
"CheckForFormat"=dword:1
; @CESYSGEN ENDIF CE_MODULES_SDNPCID
; END HIVE BOOT SECTION
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