The VIOT blob contains the following:

[000h 0000   4]                    Signature : "VIOT"    [Virtual I/O Translation Table]
[004h 0004   4]                 Table Length : 00000058
[008h 0008   1]                     Revision : 00
[009h 0009   1]                     Checksum : 66
[00Ah 0010   6]                       Oem ID : "BOCHS "
[010h 0016   8]                 Oem Table ID : "BXPC    "
[018h 0024   4]                 Oem Revision : 00000001
[01Ch 0028   4]              Asl Compiler ID : "BXPC"
[020h 0032   4]        Asl Compiler Revision : 00000001

[024h 0036   2]                   Node count : 0002
[026h 0038   2]                  Node offset : 0030
[028h 0040   8]                     Reserved : 0000000000000000

[030h 0048   1]                         Type : 03 [VirtIO-PCI IOMMU]
[031h 0049   1]                     Reserved : 00
[032h 0050   2]                       Length : 0010

[034h 0052   2]                  PCI Segment : 0000
[036h 0054   2]               PCI BDF number : 0008
[038h 0056   8]                     Reserved : 0000000000000000

[040h 0064   1]                         Type : 01 [PCI Range]
[041h 0065   1]                     Reserved : 00
[042h 0066   2]                       Length : 0018

[044h 0068   4]               Endpoint start : 00000000
[048h 0072   2]            PCI Segment start : 0000
[04Ah 0074   2]              PCI Segment end : 0000
[04Ch 0076   2]                PCI BDF start : 0000
[04Eh 0078   2]                  PCI BDF end : 00FF
[050h 0080   2]                  Output node : 0030
[052h 0082   6]                     Reserved : 000000000000

Acked-by: Ani Sinha <ani@anisinha.ca>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Message-id: 20211210170415.583179-9-jean-philippe@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>