Add OSLAR_EL1 register

Author: Javier-varez

src/registers.rs

@@ -32,6 +32,7 @@ mod mair_el1;
 mod mair_el2;
 mod midr_el1;
 mod mpidr_el1;
+mod oslar_el1;
 mod par_el1;
 mod scr_el3;
 mod sctlr_el1;
@@ -79,6 +80,7 @@ pub use mair_el1::MAIR_EL1;
 pub use mair_el2::MAIR_EL2;
 pub use midr_el1::MIDR_EL1;
 pub use mpidr_el1::MPIDR_EL1;
+pub use oslar_el1::OSLAR_EL1;
 pub use par_el1::PAR_EL1;
 pub use scr_el3::SCR_EL3;
 pub use sctlr_el1::SCTLR_EL1;

src/registers/oslar_el1.rs

@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+//
+// Copyright (c) 2018-2022 by the author(s)
+//
+// Author(s):
+//   - Andre Richter <andre.o.richter@gmail.com>
+//   - Javier Alvarez <javier.alvarez@allthingsembedded.net>
+
+//! OS Lock Access Register
+//!
+//! Used to lock or unlock the OS Lock.
+//!
+//! AArch64 System register OSLAR_EL1 bits [31:0] are architecturally mapped to External register
+//! OSLAR_EL1[31:0]. The OS Lock can also be locked or unlocked using DBGOSLAR.
+
+use tock_registers::{
+    interfaces::{Readable, Writeable},
+    register_bitfields,
+};
+
+register_bitfields! {u64,
+    pub OSLAR_EL1 [
+        /// On writes to OSLAR_EL1, bit[0] is copied to the OS Lock.
+        /// Use OSLSR_EL1.OSLK to check the current status of the lock.
+        OSLK OFFSET(0) NUMBITS(1) [
+            Unlocked = 0,
+            Locked = 1
+        ]
+    ]
+}
+
+pub struct Reg;
+
+impl Readable for Reg {
+    type T = u64;
+    type R = OSLAR_EL1::Register;
+
+    sys_coproc_read_raw!(u64, "OSLAR_EL1", "x");
+}
+
+impl Writeable for Reg {
+    type T = u64;
+    type R = OSLAR_EL1::Register;
+
+    sys_coproc_write_raw!(u64, "OSLAR_EL1", "x");
+}
+
+pub const OSLAR_EL1: Reg = Reg {};