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// 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 - EL1
//!
//! 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 {};