docs/interop/firmware.json: Add igvm to FirmwareDevice

Create an enum entry within FirmwareDevice for 'igvm' to describe that
an IGVM file can be used to map firmware into memory as an alternative
to pre-existing firmware devices.

Signed-off-by: Roy Hopkins <roy.hopkins@randomman.co.uk>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Gerd Hoffman <kraxel@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Ani Sinha <anisinha@redhat.com>
Link: https://lore.kernel.org/r/2eca2611d372facbffa65ee8244cf2d321eb9d17.1751554099.git.roy.hopkins@randomman.co.uk
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 28 insertions, 2 deletions

diff --git a/docs/interop/firmware.json b/docs/interop/firmware.json
index 745d21d822..0711b6f323 100644
--- a/docs/interop/firmware.json
+++ b/docs/interop/firmware.json
@@ -57,10 +57,17 @@
 #
 # @memory: The firmware is to be mapped into memory.
 #
+# @igvm: The firmware is defined by a file conforming to the IGVM
+#        specification and mapped into memory according to directives
+#        defined in the file. This is similar to @memory but may
+#        include additional processing defined by the IGVM file
+#        including initial CPU state or population of metadata into
+#        the guest address space. Since: 10.1
+#
 # Since: 3.0
 ##
 { 'enum' : 'FirmwareDevice',
-  'data' : [ 'flash', 'kernel', 'memory' ] }
+  'data' : [ 'flash', 'kernel', 'memory', 'igvm' ] }
 
 ##
 # @FirmwareArchitecture:
@@ -378,6 +385,24 @@
   'data'   : { 'filename' : 'str' } }
 
 ##
+# @FirmwareMappingIgvm:
+#
+# Describes loading and mapping properties for the firmware executable,
+# when @FirmwareDevice is @igvm.
+#
+# @filename: Identifies the IGVM file containing the firmware executable
+#            along with other information used to configure the initial
+#            state of the guest. The IGVM file may be shared by multiple
+#            virtual machine definitions. This corresponds to creating
+#            an object on the command line with "-object igvm-cfg,
+#            file=@filename".
+#
+# Since: 10.1
+##
+{ 'struct' : 'FirmwareMappingIgvm',
+  'data'   : { 'filename' : 'str' } }
+
+##
 # @FirmwareMapping:
 #
 # Provides a discriminated structure for firmware to describe its
@@ -393,7 +418,8 @@
   'discriminator' : 'device',
   'data'          : { 'flash'  : 'FirmwareMappingFlash',
                       'kernel' : 'FirmwareMappingKernel',
-                      'memory' : 'FirmwareMappingMemory' } }
+                      'memory' : 'FirmwareMappingMemory',
+                      'igvm'   : 'FirmwareMappingIgvm' } }
 
 ##
 # @Firmware: