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| author | James Bottomley <jejb@linux.ibm.com> | 2021-01-16 14:42:44 -0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-07-29 09:49:50 +0000 |
| commit | 0deeab36d179e79de7b93bb930b4d6eb24185416 (patch) | |
| tree | fb16ddbb737aa834dcf10bc5854b0f9bd376cef4 /OvmfPkg/OvmfPkg.dec | |
| parent | 5ace477f34f3339c1fb8d590430b5e15b69f099f (diff) | |
| download | edk2-0deeab36d179e79de7b93bb930b4d6eb24185416.tar.gz edk2-0deeab36d179e79de7b93bb930b4d6eb24185416.tar.bz2 edk2-0deeab36d179e79de7b93bb930b4d6eb24185416.zip | |
OvmfPkg/AmdSev: reserve MEMFD space for for firmware config hashes
Split the existing 4KB page reserved for SEV launch secrets into two
parts: first 3KB for SEV launch secrets and last 1KB for firmware
config hashes.
The area of the firmware config hashes will be attested (measured) by
the PSP and thus the untrusted VMM can't pass in different files from
what the guest owner allows.
Declare this in the Reset Vector table using GUID
7255371f-3a3b-4b04-927b-1da6efa8d454 and a uint32_t table of a base
and size value (similar to the structure used to declare the launch
secret block).
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ashish Kalra <ashish.kalra@amd.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3457
Co-developed-by: Dov Murik <dovmurik@linux.ibm.com>
Signed-off-by: Dov Murik <dovmurik@linux.ibm.com>
Signed-off-by: James Bottomley <jejb@linux.ibm.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Diffstat (limited to 'OvmfPkg/OvmfPkg.dec')
| -rw-r--r-- | OvmfPkg/OvmfPkg.dec | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/OvmfPkg/OvmfPkg.dec b/OvmfPkg/OvmfPkg.dec index f82228d69c..2ab27f0c73 100644 --- a/OvmfPkg/OvmfPkg.dec +++ b/OvmfPkg/OvmfPkg.dec @@ -324,6 +324,12 @@ gUefiOvmfPkgTokenSpaceGuid.PcdSevLaunchSecretBase|0x0|UINT32|0x42
gUefiOvmfPkgTokenSpaceGuid.PcdSevLaunchSecretSize|0x0|UINT32|0x43
+ ## The base address and size of a hash table confirming allowed
+ # parameters to be passed in via the Qemu firmware configuration
+ # device
+ gUefiOvmfPkgTokenSpaceGuid.PcdQemuHashTableBase|0x0|UINT32|0x47
+ gUefiOvmfPkgTokenSpaceGuid.PcdQemuHashTableSize|0x0|UINT32|0x48
+
[PcdsDynamic, PcdsDynamicEx]
gUefiOvmfPkgTokenSpaceGuid.PcdEmuVariableEvent|0|UINT64|2
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashVariablesEnable|FALSE|BOOLEAN|0x10
|