[PATCH] docs: add firmware feature flags

[Gerd Hoffmann <kraxel@redhat.com>]

Add new firmware feature flags for the recently added confidential
computing operating modes by amd and intel.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 docs/interop/firmware.json | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/docs/interop/firmware.json b/docs/interop/firmware.json
index 4e049b1c7ca0..657082b78b83 100644
--- a/docs/interop/firmware.json
+++ b/docs/interop/firmware.json
@@ -121,6 +121,15 @@
 #              related to this feature are documented in
 #              "docs/amd-memory-encryption.txt".
 #
+# @amd-sev-snp: The firmware supports running under AMD Secure Encrypted
+#               Virtualization - Secure Nested Paging, as specified in the
+#               AMD64 Architecture Programmer's Manual. QEMU command line
+#               options related to this feature are documented in
+#               "docs/amd-memory-encryption.txt".
+#
+# @intel-tdx: The firmware supports running under Intel Trust Domain
+#             Extensions (TDX).
+#
 # @enrolled-keys: The variable store (NVRAM) template associated with
 #                 the firmware binary has the UEFI Secure Boot
 #                 operational mode turned on, with certificates
@@ -185,9 +194,11 @@
 # Since: 3.0
 ##
 { 'enum' : 'FirmwareFeature',
-  'data' : [ 'acpi-s3', 'acpi-s4', 'amd-sev', 'amd-sev-es', 'enrolled-keys',
-             'requires-smm', 'secure-boot', 'verbose-dynamic',
-             'verbose-static' ] }
+  'data' : [ 'acpi-s3', 'acpi-s4',
+             'amd-sev', 'amd-sev-es', 'amd-sev-snp',
+             'intel-tdx',
+             'enrolled-keys', 'requires-smm', 'secure-boot',
+             'verbose-dynamic', 'verbose-static' ] }
 
 ##
 # @FirmwareFlashFile:
-- 
2.37.3