Add VMPIDR_EL2

src/registers.rs

@@ -140,6 +140,7 @@ mod ttbr1_el1;
 mod vbar_el1;
 mod vbar_el2;
 mod vbar_el3;
+mod vmpidr_el2;
 mod vtcr_el2;
 mod vttbr_el2;
 
@@ -278,6 +279,7 @@ pub use ttbr1_el1::TTBR1_EL1;
 pub use vbar_el1::VBAR_EL1;
 pub use vbar_el2::VBAR_EL2;
 pub use vbar_el3::VBAR_EL3;
+pub use vmpidr_el2::VMPIDR_EL2;
 pub use vtcr_el2::VTCR_EL2;
 pub use vttbr_el2::VTTBR_EL2;
 

src/registers/vmpidr_el2.rs

@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+//
+// Copyright (c) 2025 by the author(s)
+//
+// Author(s):
+//   - Callum Thomson <callumthom11@gmail.com>
+
+//! Virtual Multiprocessor ID Register - EL2
+//!
+//! Holds the value returned for EL1 reads of MPIDR_EL1.
+
+use tock_registers::interfaces::Writeable;
+use tock_registers::{interfaces::Readable, register_bitfields};
+
+register_bitfields! {u64,
+    pub VMPIDR_EL2 [
+        /// Affinity level 3. See the description of Aff0 for more information.
+        Aff3 OFFSET(32) NUMBITS(8) [],
+
+        /// Reserved, RES1.
+        RES1 OFFSET(31) NUMBITS(1) [],
+
+        /// Indicates a Uniprocessor system, as distinct from PE 0 in a multiprocessor system.
+        U OFFSET(30) NUMBITS(1) [
+            MultiprocessorSystem = 0b0,
+            UniprocessorSystem = 0b1,
+        ],
+
+        /// Indicates whether the lowest level of affinity consists of logical PEs that are implemented using a
+        /// multithreading type approach. See the description of Aff0 for more information about affinity levels
+        MT OFFSET(24) NUMBITS(1) [],
+
+        /// Affinity level 2. See the description of Aff0 for more information.
+        Aff2 OFFSET(16) NUMBITS(8) [],
+
+        /// Affinity level 1. See the description of Aff0 for more information.
+        Aff1 OFFSET(8) NUMBITS(8) [],
+
+        /// Affinity level 0.  This is the affinity level that is most significant for determining PE behavior.  Higher
+        /// affinity levels are increasingly less significant in determining PE behavior.
+        Aff0 OFFSET(0) NUMBITS(8) []
+    ]
+}
+
+pub struct Reg;
+
+impl Readable for Reg {
+    type T = u64;
+    type R = VMPIDR_EL2::Register;
+
+    sys_coproc_read_raw!(u64, "VMPIDR_EL2", "x");
+}
+
+impl Writeable for Reg {
+    type T = u64;
+    type R = VMPIDR_EL2::Register;
+
+    sys_coproc_write_raw!(u64, "VMPIDR_EL2", "x");
+}
+
+pub const VMPIDR_EL2: Reg = Reg {};