ArmPlatformPkg/Bds: Upgrade the BDS to be more conformed to the UEFI Specification

The UEFI Specification defines some requirement related to the Boot Manager.
This new version of the BDS support most of the features:
- TimeOut, BootNext, BootOrder, Boot### environment variable for boot device selection
- ConOut. ConIn, ConErr environment variables for console intialization
- Boot EFI application defined by a Device Path
- Support removable devices
- Support FileSystem, MemMap, PXE and TFTP boot devices



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11800 6f19259b-4bc3-4df7-8a09-765794883524

ArmPlatformPkg/ArmPlatformPkg.dec

@@ -71,3 +71,24 @@
   gArmPlatformTokenSpaceGuid.PcdSP804FrequencyInMHz|1|UINT32|0x0000001D
   gArmPlatformTokenSpaceGuid.PcdSP804Timer0InterruptNum|0|UINT32|0x0000001E
 
+  #
+  # BDS - Boot Manager
+  #
+  gArmPlatformTokenSpaceGuid.PcdFirmwareVendor|"ARM Platform"|VOID*|0x00000019
+  gArmPlatformTokenSpaceGuid.PcdDefaultBootDescription|L""|VOID*|0x0000000C
+  gArmPlatformTokenSpaceGuid.PcdDefaultBootDevicePath|L""|VOID*|0x0000000D
+  gArmPlatformTokenSpaceGuid.PcdDefaultBootArgument|""|VOID*|0x000000F
+  # PcdDefaultBootType define the type of the binary pointed by PcdDefaultBootDevicePath: 
+  #  - 0 = an EFI application
+  #  - 1 = a Linux kernel with ATAG support
+  #  - 2 = a Linux kernel with FDT support
+  gArmPlatformTokenSpaceGuid.PcdDefaultBootType|0|UINT32|0x00000010
+  gArmPlatformTokenSpaceGuid.PcdFdtDevicePath|L""|VOID*|0x00000011
+  
+  ## Timeout value for displaying progressing bar in before boot OS.
+  #  According to UEFI 2.0 spec, the default TimeOut should be 0xffff.
+  gArmPlatformTokenSpaceGuid.PcdPlatformBootTimeOut|0xffff|UINT16|0x0000001A
+  
+  gArmPlatformTokenSpaceGuid.PcdDefaultConInPaths|L""|VOID*|0x0000001B
+  gArmPlatformTokenSpaceGuid.PcdDefaultConOutPaths|L""|VOID*|0x0000001C
+