diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..f1511e3
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,32 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "arm-sp805"
+version = "0.1.0"
+dependencies = [
+ "bitflags",
+ "volatile-register",
+]
+
+[[package]]
+name = "bitflags"
+version = "2.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
+
+[[package]]
+name = "vcell"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77439c1b53d2303b20d9459b1ade71a83c716e3f9c34f3228c00e6f185d6c002"
+
+[[package]]
+name = "volatile-register"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de437e2a6208b014ab52972a27e59b33fa2920d3e00fe05026167a1c509d19cc"
+dependencies = [
+ "vcell",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..6ba79a3
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,21 @@
+# SPDX-FileCopyrightText: Copyright 2024 Arm Limited and/or its affiliates <open-source-office@arm.com>
+# SPDX-License-Identifier: MIT OR Apache-2.0
+
+[package]
+name = "arm-sp805"
+version = "0.1.0"
+authors = [
+    "Balint Dobszay <balint.dobszay@arm.com>",
+    "Imre Kis <imre.kis@arm.com>",
+]
+description = "Arm Watchdog Module (SP805) driver"
+edition = "2021"
+license = "MIT OR Apache-2.0"
+repository = "https://git.trustedfirmware.org/rust-spmc/rust-spmc.git"
+keywords = ["arm", "sp806", "watchdog", "timer", "driver"]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+bitflags = "2.6"
+volatile-register = "0.2"
diff --git a/LICENSE-Apache-2.0 b/LICENSE-Apache-2.0
new file mode 100644
index 0000000..1b5ec8b
--- /dev/null
+++ b/LICENSE-Apache-2.0
@@ -0,0 +1,176 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
+
+   "Legal Entity" shall mean the union of the acting entity and all
+   other entities that control, are controlled by, or are under common
+   control with that entity. For the purposes of this definition,
+   "control" means (i) the power, direct or indirect, to cause the
+   direction or management of such entity, whether by contract or
+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
+   exercising permissions granted by this License.
+
+   "Source" form shall mean the preferred form for making modifications,
+   including but not limited to software source code, documentation
+   source, and configuration files.
+
+   "Object" form shall mean any form resulting from mechanical
+   transformation or translation of a Source form, including but
+   not limited to compiled object code, generated documentation,
+   and conversions to other media types.
+
+   "Work" shall mean the work of authorship, whether in Source or
+   Object form, made available under the License, as indicated by a
+   copyright notice that is included in or attached to the work
+   (an example is provided in the Appendix below).
+
+   "Derivative Works" shall mean any work, whether in Source or Object
+   form, that is based on (or derived from) the Work and for which the
+   editorial revisions, annotations, elaborations, or other modifications
+   represent, as a whole, an original work of authorship. For the purposes
+   of this License, Derivative Works shall not include works that remain
+   separable from, or merely link (or bind by name) to the interfaces of,
+   the Work and Derivative Works thereof.
+
+   "Contribution" shall mean any work of authorship, including
+   the original version of the Work and any modifications or additions
+   to that Work or Derivative Works thereof, that is intentionally
+   submitted to Licensor for inclusion in the Work by the copyright owner
+   or by an individual or Legal Entity authorized to submit on behalf of
+   the copyright owner. For the purposes of this definition, "submitted"
+   means any form of electronic, verbal, or written communication sent
+   to the Licensor or its representatives, including but not limited to
+   communication on electronic mailing lists, source code control systems,
+   and issue tracking systems that are managed by, or on behalf of, the
+   Licensor for the purpose of discussing and improving the Work, but
+   excluding communication that is conspicuously marked or otherwise
+   designated in writing by the copyright owner as "Not a Contribution."
+
+   "Contributor" shall mean Licensor and any individual or Legal Entity
+   on behalf of whom a Contribution has been received by Licensor and
+   subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   copyright license to reproduce, prepare Derivative Works of,
+   publicly display, publicly perform, sublicense, and distribute the
+   Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   (except as stated in this section) patent license to make, have made,
+   use, offer to sell, sell, import, and otherwise transfer the Work,
+   where such license applies only to those patent claims licensable
+   by such Contributor that are necessarily infringed by their
+   Contribution(s) alone or by combination of their Contribution(s)
+   with the Work to which such Contribution(s) was submitted. If You
+   institute patent litigation against any entity (including a
+   cross-claim or counterclaim in a lawsuit) alleging that the Work
+   or a Contribution incorporated within the Work constitutes direct
+   or contributory patent infringement, then any patent licenses
+   granted to You under this License for that Work shall terminate
+   as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the
+   Work or Derivative Works thereof in any medium, with or without
+   modifications, and in Source or Object form, provided that You
+   meet the following conditions:
+
+   (a) You must give any other recipients of the Work or
+       Derivative Works a copy of this License; and
+
+   (b) You must cause any modified files to carry prominent notices
+       stating that You changed the files; and
+
+   (c) You must retain, in the Source form of any Derivative Works
+       that You distribute, all copyright, patent, trademark, and
+       attribution notices from the Source form of the Work,
+       excluding those notices that do not pertain to any part of
+       the Derivative Works; and
+
+   (d) If the Work includes a "NOTICE" text file as part of its
+       distribution, then any Derivative Works that You distribute must
+       include a readable copy of the attribution notices contained
+       within such NOTICE file, excluding those notices that do not
+       pertain to any part of the Derivative Works, in at least one
+       of the following places: within a NOTICE text file distributed
+       as part of the Derivative Works; within the Source form or
+       documentation, if provided along with the Derivative Works; or,
+       within a display generated by the Derivative Works, if and
+       wherever such third-party notices normally appear. The contents
+       of the NOTICE file are for informational purposes only and
+       do not modify the License. You may add Your own attribution
+       notices within Derivative Works that You distribute, alongside
+       or as an addendum to the NOTICE text from the Work, provided
+       that such additional attribution notices cannot be construed
+       as modifying the License.
+
+   You may add Your own copyright statement to Your modifications and
+   may provide additional or different license terms and conditions
+   for use, reproduction, or distribution of Your modifications, or
+   for any such Derivative Works as a whole, provided Your use,
+   reproduction, and distribution of the Work otherwise complies with
+   the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
+   except as required for reasonable and customary use in describing the
+   origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+   implied, including, without limitation, any warranties or conditions
+   of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
+   result of this License or out of the use or inability to use the
+   Work (including but not limited to damages for loss of goodwill,
+   work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses), even if such Contributor
+   has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
+   and charge a fee for, acceptance of support, warranty, indemnity,
+   or other liability obligations and/or rights consistent with this
+   License. However, in accepting such obligations, You may act only
+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
diff --git a/LICENSE-MIT b/LICENSE-MIT
new file mode 100644
index 0000000..31aa793
--- /dev/null
+++ b/LICENSE-MIT
@@ -0,0 +1,23 @@
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/dco.txt b/dco.txt
new file mode 100644
index 0000000..d950df0
--- /dev/null
+++ b/dco.txt
@@ -0,0 +1,34 @@
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+    of my knowledge, is covered under an appropriate open source
+    license and I have the right under that license to submit that
+    work with modifications, whether created in whole or in part
+    by me, under the same open source license (unless I am
+    permitted to submit under a different license), as indicated
+    in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including all
+    personal information I submit with it, including my sign-off) is
+    maintained indefinitely and may be redistributed consistent with
+    this project or the open source license(s) involved.
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..ef4dd83
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,159 @@
+// SPDX-FileCopyrightText: Copyright 2023-2024 Arm Limited and/or its affiliates <open-source-office@arm.com>
+// SPDX-License-Identifier: MIT OR Apache-2.0
+
+//! Arm Watchdog Module (SP805) driver
+//!
+//! Driver implementation for the [SP805 watchdog module](https://developer.arm.com/documentation/ddi0270/latest/).
+
+#![no_std]
+
+use core::ops::Deref;
+
+use bitflags::bitflags;
+use volatile_register::{RO, RW, WO};
+
+bitflags! {
+    /// Control register
+    #[repr(transparent)]
+    #[derive(Copy, Clone)]
+    struct ControlRegister : u32 {
+        /// Enable Watchdog module reset output
+        const RESEN = 1 << 1;
+        /// Break error
+        const INTEN = 1 << 0;
+    }
+
+    /// Raw Interrupt Status Register
+    #[repr(transparent)]
+    #[derive(Copy, Clone)]
+    struct RawInterruptStatusRegister : u32 {
+        /// Raw interrupt status from the counter
+        const WDOGRIS = 1 << 0;
+    }
+
+    /// Masked Interrupt Status Register
+      struct MaskedInterruptStatusRegister : u32 {
+        /// Enabled interrupt status from the counter
+        const WDOGMIS = 1 << 0;
+    }
+}
+
+/// SP805 register map
+#[repr(C, align(4))]
+pub struct SP805Registers {
+    wdog_load: RW<u32>,       // 0x000 Load Register
+    wdog_value: RO<u32>,      // 0x004 Value Register
+    wdog_control: RW<u32>,    // 0x008 Control register
+    wdog_intclr: WO<u32>,     // 0x00c Interrupt Clear Register
+    wdog_ris: RO<u32>,        // 0x010 Raw Interrupt Status Register
+    wdog_mis: RO<u32>,        // 0x014 Masked Interrupt Status Register
+    reserved_18: [u32; 762],  // 0x018 - 0xbfc
+    wdog_lock: RW<u32>,       // 0xc00 Lock Register
+    reserved_c04: [u32; 191], // 0xc04 - 0xefc
+    wdog_itcr: RW<u32>,       // 0xf00 Integration Test Control Register,
+    wdog_itop: WO<u32>,       // 0xf04 Integration Test Output Set
+    reserved_f08: [u32; 54],  // 0xf08 - 0xfdc
+    wdog_periph_id0: RO<u32>, // 0xfe0 Peripheral Identification Register 0
+    wdog_periph_id1: RO<u32>, // 0xfe4 Peripheral Identification Register 1
+    wdog_periph_id2: RO<u32>, // 0xfe8 Peripheral Identification Register 2
+    wdog_periph_id3: RO<u32>, // 0xfec Peripheral Identification Register 3
+    wdog_pcell_id0: RO<u32>,  // 0xff0 PrimeCell Identification Register 0
+    wdog_pcell_id1: RO<u32>,  // 0xff4 PrimeCell Identification Register 1
+    wdog_pcell_id2: RO<u32>,  // 0xff8 PrimeCell Identification Register 2
+    wdog_pcell_id3: RO<u32>,  // 0xffc PrimeCell Identification Register 3
+}
+
+struct WatchdogUnlockGuard<'a, R>
+where
+    R: Deref<Target = SP805Registers>,
+{
+    regs: &'a R,
+}
+
+impl<'a, R> WatchdogUnlockGuard<'a, R>
+where
+    R: Deref<Target = SP805Registers>,
+{
+    const LOCK: u32 = 0x00000001;
+    const UNLOCK: u32 = 0x1ACCE551;
+
+    pub fn new(regs: &'a R) -> Self {
+        unsafe {
+            regs.wdog_lock.write(Self::UNLOCK);
+        }
+        Self { regs }
+    }
+}
+
+impl<'a, R> Deref for WatchdogUnlockGuard<'a, R>
+where
+    R: Deref<Target = SP805Registers>,
+{
+    type Target = R;
+
+    fn deref(&self) -> &Self::Target {
+        self.regs
+    }
+}
+
+impl<'a, R> Drop for WatchdogUnlockGuard<'a, R>
+where
+    R: Deref<Target = SP805Registers>,
+{
+    fn drop(&mut self) {
+        unsafe {
+            self.regs.wdog_lock.write(Self::LOCK);
+        }
+    }
+}
+
+/// SP805 Watchdog implementation
+pub struct Watchdog<R>
+where
+    R: Deref<Target = SP805Registers>,
+{
+    regs: R,
+    load_value: u32,
+}
+
+impl<R> Watchdog<R>
+where
+    R: Deref<Target = SP805Registers>,
+{
+    /// Create new watchdog instance
+    pub fn new(regs: R, load_value: u32) -> Self {
+        Self { regs, load_value }
+    }
+
+    /// Enable watchdog
+    pub fn enable(&self) {
+        let regs = self.unlock();
+
+        unsafe {
+            regs.wdog_load.write(self.load_value);
+            regs.wdog_intclr.write(1);
+            regs.wdog_control
+                .write((ControlRegister::INTEN | ControlRegister::RESEN).bits());
+        }
+    }
+
+    /// Disable watchdog
+    pub fn disable(&self) {
+        unsafe {
+            self.unlock()
+                .wdog_control
+                .write(ControlRegister::empty().bits());
+        }
+    }
+
+    /// Update watchdog
+    pub fn update(&self) {
+        unsafe {
+            self.unlock().wdog_load.write(self.load_value);
+        }
+    }
+
+    fn unlock(&self) -> WatchdogUnlockGuard<R> {
+        WatchdogUnlockGuard::new(&self.regs)
+    }
+}