[RFC v3 22/24] docs/interop/firmware.json: Add arm-rme firmware feature

[Mathieu Poirier <mathieu.poirier@linaro.org>]

From: Jean-Philippe Brucker <jean-philippe@linaro.org>

Some distributions provide packages continaing firmware to be run under
QEMU, such as "qemu-efi-aarch64" or "edk2-aarch64". Those packages also
contain descriptors in /usr/share/qemu/firmware/*.json listing the
firmware features, so that environments like libvirt can figure out
which firmware they can load.

Define an optional feature for arm64 firmware to indicate that a
firmware supports running in a Realm. Firmware implementations need
extra support for running in a Realm, in particular to distinguish
shared from private guest memory.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
 docs/interop/firmware.json | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/docs/interop/firmware.json b/docs/interop/firmware.json
index 421bee0e5ed4..2850b91078d9 100644
--- a/docs/interop/firmware.json
+++ b/docs/interop/firmware.json
@@ -161,6 +161,9 @@
 #     options related to this feature are documented in
 #     "docs/system/i386/amd-memory-encryption.rst".
 #
+# @arm-rme: The firmware supports running in a Realm, under the Arm Realm
+#     Management Extension (RME).
+#
 # @intel-tdx: The firmware supports running under Intel Trust Domain
 #     Extensions (TDX).
 #
@@ -229,7 +232,7 @@
 { 'enum' : 'FirmwareFeature',
   'data' : [ 'acpi-s3', 'acpi-s4',
              'amd-sev', 'amd-sev-es', 'amd-sev-snp',
-             'intel-tdx',
+             'arm-rme', 'intel-tdx',
              'enrolled-keys', 'requires-smm',
              'secure-boot', 'host-uefi-vars',
              'verbose-dynamic', 'verbose-static' ] }
-- 
2.43.0