arch, vmm: tdx: Remove TD_VMM_DATA mechanism

It's been decided the ACPI tables will be passed to the firmware in a
different way, rather than using TD_VMM_DATA. Since TD_VMM_DATA was
introduced for this purpose, there's no reason to keep it in our
codebase.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

arch/src/x86_64/tdx/mod.rs

@@ -61,57 +61,6 @@ impl Default for TdvfSectionType {
     }
 }
 
-#[repr(C)]
-#[derive(Clone, Copy, Default, Debug)]
-pub struct TdVmmDataRegion {
-    pub start_address: u64,
-    pub length: u64,
-    pub region_type: TdVmmDataRegionType,
-}
-
-#[repr(u16)]
-#[derive(Clone, Copy, Debug)]
-pub enum TdVmmDataRegionType {
-    Signature = 0x0000,
-    InterfaceVersion = 0x0001,
-    SystemUuid = 0x0002,
-    RamSize = 0x0003,
-    GraphicsEnabled = 0x0004,
-    SmpCpuCount = 0x0005,
-    MachineId = 0x0006,
-    KernelAddress = 0x0007,
-    KernelSize = 0x0008,
-    KernelCommandLine = 0x0009,
-    InitrdAddress = 0x000a,
-    InitrdSize = 0x000b,
-    BootDevice = 0x000c,
-    NumaData = 0x000d,
-    BootMenu = 0x000e,
-    MaximumCpuCount = 0x000f,
-    KernelEntry = 0x0010,
-    KernelData = 0x0011,
-    InitrdData = 0x0012,
-    CommandLineAddress = 0x0013,
-    CommandLineSize = 0x0014,
-    CommandLineData = 0x0015,
-    KernelSetupAddress = 0x0016,
-    KernelSetupSize = 0x0017,
-    KernelSetupData = 0x0018,
-    FileDir = 0x0019,
-    AcpiTables = 0x8000,
-    SmbiosTables = 0x8001,
-    Irq0Override = 0x8002,
-    E820Table = 0x8003,
-    HpetData = 0x8004,
-    Reserved = 0xffff,
-}
-
-impl Default for TdVmmDataRegionType {
-    fn default() -> Self {
-        TdVmmDataRegionType::Reserved
-    }
-}
-
 pub fn parse_tdvf_sections(file: &mut File) -> Result<Vec<TdvfSection>, TdvfError> {
     // The 32-bit offset to the TDVF metadata is located 32 bytes from
     // the end of the file.
@@ -231,20 +180,11 @@ struct HobGuidType {
     name: EfiGuid,
 }
 
-#[repr(C)]
-#[derive(Copy, Clone, Default, Debug)]
-struct TdVmmData {
-    guid_type: HobGuidType,
-    region: TdVmmDataRegion,
-}
-
 // SAFETY: These data structures only contain a series of integers
-unsafe impl ByteValued for TdVmmDataRegion {}
 unsafe impl ByteValued for HobHeader {}
 unsafe impl ByteValued for HobHandoffInfoTable {}
 unsafe impl ByteValued for HobResourceDescriptor {}
 unsafe impl ByteValued for HobGuidType {}
-unsafe impl ByteValued for TdVmmData {}
 
 pub struct TdHob {
     start_offset: u64,
@@ -375,38 +315,6 @@ impl TdHob {
             0x403,
         )
     }
-
-    pub fn add_td_vmm_data(
-        &mut self,
-        mem: &GuestMemoryMmap,
-        region: TdVmmDataRegion,
-    ) -> Result<(), TdvfError> {
-        let td_vmm_data = TdVmmData {
-            guid_type: HobGuidType {
-                header: HobHeader {
-                    r#type: HobType::GuidExtension,
-                    length: std::mem::size_of::<TdVmmData>() as u16,
-                    reserved: 0,
-                },
-                // TD_VMM_DATA_GUID CF2643E4-C0D3-46FF-0000-72EE623DDE38
-                name: EfiGuid {
-                    data1: 0xcf26_43e4,
-                    data2: 0xc0d3,
-                    data3: 0x46ff,
-                    data4: [0x00, 0x00, 0x72, 0xee, 0x62, 0x3d, 0xde, 0x38],
-                },
-            },
-            region,
-        };
-        info!(
-            "Writing HOB TD_VMM_DATA {:x} {:x?}",
-            self.current_offset, td_vmm_data
-        );
-        mem.write_obj(td_vmm_data, GuestAddress(self.current_offset))
-            .map_err(TdvfError::GuestMemoryWriteHob)?;
-        self.update_offset::<TdVmmData>();
-        Ok(())
-    }
 }
 
 #[cfg(test)]