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OvmfPkg: Add NV Variable storage within FD

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This is to prepare for QEMU flash support which will allow
non-volatile variables to be saved in the flash image.

Note two size changes:
 * NV Varstore size increased from 0xc000 to 0xe000
 * FTW work size decreased from 0x2000 to 0x1000

The reason for this change is that the fault-tolerant write
support requires that the work area fit within the block
just before the fault-tolerant write spare storage blocks.
Since QEMU flash blocks have a size of 0x1000, this means
that the maximum FTW work size is 0x1000.

v2:
 * Update commit message and PcdVariableStoreSize

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14835 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jordan Justen
2013-11-12 18:34:20 +00:00
committed by jljusten
parent 501e08fcfe
commit 9a08997862
6 changed files with 249 additions and 48 deletions
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5
OvmfPkg/OvmfPkgX64.dsc
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@@ -284,10 +284,7 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize|0x400
!endif
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize|0x8000
gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize|0xc000
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize|0xc000
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize|0x2000
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize|0x10000
gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize|0xe000
gEfiMdeModulePkgTokenSpaceGuid.PcdVpdBaseAddress|0x0