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OvmfPkg/EmuVariableFvbRuntimeDxe: Add support for PcdSecureBootEnable 

When PcdSecureBootEnable is true, the authenticated variable
FV is created.  Otherwise the standard FV is created.

Signed-off-by: lgrosenb
Reviewed-by: jljusten
Reviewed-by: mdkinney

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13092 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jljusten 2012-03-09 17:38:35 +00:00
parent e05061c59f
commit bdf93df856
2 changed files with 81 additions and 1 deletions
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79
OvmfPkg/EmuVariableFvbRuntimeDxe/Fvb.c
View File

@ -34,6 +34,9 @@
#include <Library/PlatformFvbLib.h>
#include "Fvb.h"
#define EFI_AUTHENTICATED_VARIABLE_GUID \
{ 0xaaf32c78, 0x947b, 0x439a, { 0xa1, 0x80, 0x2e, 0x14, 0x4e, 0xc3, 0x77, 0x92 } }
//
// Virtual Address Change Event
//
@ -622,6 +625,9 @@ InitializeFvAndVariableStoreHeaders (
IN VOID *Ptr
)
{
//
// Templates for standard (non-authenticated) variable FV header
//
STATIC FVB_FV_HDR_AND_VARS_TEMPLATE FvAndVarTemplate = {
{ // EFI_FIRMWARE_VOLUME_HEADER FvHdr;
// UINT8 ZeroVector[16];
@ -684,12 +690,83 @@ InitializeFvAndVariableStoreHeaders (
0
}
};
//
// Templates for authenticated variable FV header
//
STATIC FVB_FV_HDR_AND_VARS_TEMPLATE FvAndAuthenticatedVarTemplate = {
{ // EFI_FIRMWARE_VOLUME_HEADER FvHdr;
// UINT8 ZeroVector[16];
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
// EFI_GUID FileSystemGuid;
EFI_SYSTEM_NV_DATA_FV_GUID,
// UINT64 FvLength;
EMU_FVB_SIZE,
// UINT32 Signature;
EFI_FVH_SIGNATURE,
// EFI_FVB_ATTRIBUTES_2 Attributes;
0x4feff,
// UINT16 HeaderLength;
EMU_FV_HEADER_LENGTH,
// UINT16 Checksum;
0,
// UINT16 ExtHeaderOffset;
0,
// UINT8 Reserved[1];
0,
// UINT8 Revision;
EFI_FVH_REVISION,
// EFI_FV_BLOCK_MAP_ENTRY BlockMap[1];
{ 2, // UINT32 NumBlocks;
EMU_FVB_BLOCK_SIZE // UINT32 Length;
}
},
// EFI_FV_BLOCK_MAP_ENTRY EndBlockMap;
{ 0, 0 }, // End of block map
{ // VARIABLE_STORE_HEADER VarHdr;
// EFI_GUID Signature; // need authenticated variables for secure boot
EFI_AUTHENTICATED_VARIABLE_GUID,
// UINT32 Size;
(
FixedPcdGet32 (PcdVariableStoreSize) -
OFFSET_OF (FVB_FV_HDR_AND_VARS_TEMPLATE, VarHdr)
),
// UINT8 Format;
VARIABLE_STORE_FORMATTED,
// UINT8 State;
VARIABLE_STORE_HEALTHY,
// UINT16 Reserved;
0,
// UINT32 Reserved1;
0
}
};
EFI_FIRMWARE_VOLUME_HEADER *Fv;
//
// Copy the template structure into the location
//
CopyMem (Ptr, (VOID*)&FvAndVarTemplate, sizeof (FvAndVarTemplate));
if (FeaturePcdGet (PcdSecureBootEnable) == FALSE) {
CopyMem (Ptr, (VOID*)&FvAndVarTemplate, sizeof (FvAndVarTemplate));
} else {
CopyMem (Ptr, (VOID*)&FvAndAuthenticatedVarTemplate, sizeof (FvAndAuthenticatedVarTemplate));
}
//
// Update the checksum for the FV header

3
OvmfPkg/EmuVariableFvbRuntimeDxe/Fvb.inf
View File

@ -68,6 +68,9 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase
gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvStoreReserved
[FeaturePcd]
gUefiOvmfPkgTokenSpaceGuid.PcdSecureBootEnable
[Depex]
TRUE