Merge remote-tracking branch 'origin/main' into nrf-pdm

51 files changed, 707 insertions, 165 deletions

diff --git a/examples/boot/application/nrf/.cargo/config.toml b/examples/boot/application/nrf/.cargo/config.toml
index 8ca28df39..17616a054 100644
--- a/examples/boot/application/nrf/.cargo/config.toml
+++ b/examples/boot/application/nrf/.cargo/config.toml
@@ -1,6 +1,6 @@
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
-# replace nRF82840_xxAA with your chip as listed in `probe-run --list-chips`
-runner = "probe-run --chip nRF52840_xxAA"
+# replace nRF82840_xxAA with your chip as listed in `probe-rs chip list`
+runner = "probe-rs run --chip nRF52840_xxAA"
 
 [build]
 target = "thumbv7em-none-eabi"
diff --git a/examples/boot/application/nrf/Cargo.toml b/examples/boot/application/nrf/Cargo.toml
index b9ff92578..2a0cf7818 100644
--- a/examples/boot/application/nrf/Cargo.toml
+++ b/examples/boot/application/nrf/Cargo.toml
@@ -2,19 +2,26 @@
 edition = "2021"
 name = "embassy-boot-nrf-examples"
 version = "0.1.0"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync" }
-embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
-embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly"] }
-embassy-nrf = { version = "0.1.0", path = "../../../../embassy-nrf", features = ["time-driver-rtc1", "gpiote", "nightly", "nrf52840"] }
-embassy-boot-nrf = { version = "0.1.0", path = "../../../../embassy-boot/nrf" }
+embassy-sync = { version = "0.2.0", path = "../../../../embassy-sync" }
+embassy-executor = { version = "0.2.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "nightly", "integrated-timers", "arch-cortex-m", "executor-thread"] }
+embassy-time = { version = "0.1.2", path = "../../../../embassy-time", features = ["nightly"] }
+embassy-nrf = { version = "0.1.0", path = "../../../../embassy-nrf", features = ["time-driver-rtc1", "gpiote", "nightly"] }
+embassy-boot = { version = "0.1.0", path = "../../../../embassy-boot/boot", features = ["nightly"] }
+embassy-boot-nrf = { version = "0.1.0", path = "../../../../embassy-boot/nrf", features = ["nightly"] }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../../embassy-embedded-hal" }
 
 defmt = { version = "0.3", optional = true }
-defmt-rtt = { version = "0.3", optional = true }
+defmt-rtt = { version = "0.4", optional = true }
 panic-reset = { version = "0.1.1" }
 embedded-hal = { version = "0.2.6" }
 
-cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
 cortex-m-rt = "0.7.0"
+
+[features]
+ed25519-dalek = ["embassy-boot/ed25519-dalek"]
+ed25519-salty = ["embassy-boot/ed25519-salty"]
+skip-include = []
diff --git a/examples/boot/application/nrf/README.md b/examples/boot/application/nrf/README.md
index 703377a20..9d6d20336 100644
--- a/examples/boot/application/nrf/README.md
+++ b/examples/boot/application/nrf/README.md
@@ -1,6 +1,6 @@
 # Examples using bootloader
 
-Example for nRF52 demonstrating the bootloader. The example consists of application binaries, 'a'
+Example for nRF demonstrating the bootloader. The example consists of application binaries, 'a'
 which allows you to press a button to start the DFU process, and 'b' which is the updated
 application.
 
@@ -20,15 +20,19 @@ application.
 cp memory-bl.x ../../bootloader/nrf/memory.x
 
 # Flash bootloader
-cargo flash --manifest-path ../../bootloader/nrf/Cargo.toml --features embassy-nrf/nrf52840 --release --chip nRF52840_xxAA
+cargo flash --manifest-path ../../bootloader/nrf/Cargo.toml --features embassy-nrf/nrf52840 --target thumbv7em-none-eabi --release --chip nRF52840_xxAA
 # Build 'b'
-cargo build --release --bin b
+cargo build --release --bin b --features embassy-nrf/nrf52840
 # Generate binary for 'b'
-cargo objcopy --release --bin b -- -O binary b.bin
+cargo objcopy --release --bin b --features embassy-nrf/nrf52840 --target thumbv7em-none-eabi -- -O binary b.bin
 ```
 
 # Flash `a` (which includes b.bin)
 
 ```
-cargo flash --release --bin a --chip nRF52840_xxAA
+cargo flash --release --bin a --features embassy-nrf/nrf52840 --target thumbv7em-none-eabi --chip nRF52840_xxAA
 ```
+
+You should then see a solid LED. Pressing button 1 will cause the DFU to be loaded by the bootloader. Upon
+successfully loading, you'll see the LED flash. After 5 seconds, because there is no petting of the watchdog,
+you'll see the LED go solid again. This indicates that the bootloader has reverted the update.
diff --git a/examples/boot/application/nrf/memory-bl-nrf91.x b/examples/boot/application/nrf/memory-bl-nrf91.x
new file mode 100644
index 000000000..14ceffa73
--- /dev/null
+++ b/examples/boot/application/nrf/memory-bl-nrf91.x
@@ -0,0 +1,19 @@
+MEMORY
+{
+  /* NOTE 1 K = 1 KiBi = 1024 bytes */
+  /* Assumes Secure Partition Manager (SPM) flashed at the start */
+  FLASH                             : ORIGIN = 0x00050000, LENGTH = 24K
+  BOOTLOADER_STATE                  : ORIGIN = 0x00056000, LENGTH = 4K
+  ACTIVE                            : ORIGIN = 0x00057000, LENGTH = 64K
+  DFU                               : ORIGIN = 0x00067000, LENGTH = 68K
+  RAM                         (rwx) : ORIGIN = 0x20018000, LENGTH = 32K
+}
+
+__bootloader_state_start = ORIGIN(BOOTLOADER_STATE);
+__bootloader_state_end = ORIGIN(BOOTLOADER_STATE) + LENGTH(BOOTLOADER_STATE);
+
+__bootloader_active_start = ORIGIN(ACTIVE);
+__bootloader_active_end = ORIGIN(ACTIVE) + LENGTH(ACTIVE);
+
+__bootloader_dfu_start = ORIGIN(DFU);
+__bootloader_dfu_end = ORIGIN(DFU) + LENGTH(DFU);
diff --git a/examples/boot/application/nrf/memory-bl.x b/examples/boot/application/nrf/memory-bl.x
index 8a32b905f..257d65644 100644
--- a/examples/boot/application/nrf/memory-bl.x
+++ b/examples/boot/application/nrf/memory-bl.x
@@ -5,7 +5,7 @@ MEMORY
   BOOTLOADER_STATE                  : ORIGIN = 0x00006000, LENGTH = 4K
   ACTIVE                            : ORIGIN = 0x00007000, LENGTH = 64K
   DFU                               : ORIGIN = 0x00017000, LENGTH = 68K
-  RAM                         (rwx) : ORIGIN = 0x20000008, LENGTH = 32K
+  RAM                         (rwx) : ORIGIN = 0x20000000, LENGTH = 32K
 }
 
 __bootloader_state_start = ORIGIN(BOOTLOADER_STATE);
diff --git a/examples/boot/application/nrf/memory-nrf91.x b/examples/boot/application/nrf/memory-nrf91.x
new file mode 100644
index 000000000..2bc13c0d6
--- /dev/null
+++ b/examples/boot/application/nrf/memory-nrf91.x
@@ -0,0 +1,16 @@
+MEMORY
+{
+  /* NOTE 1 K = 1 KiBi = 1024 bytes */
+  /* Assumes Secure Partition Manager (SPM) flashed at the start */
+  BOOTLOADER                        : ORIGIN = 0x00050000, LENGTH = 24K
+  BOOTLOADER_STATE                  : ORIGIN = 0x00056000, LENGTH = 4K
+  FLASH                             : ORIGIN = 0x00057000, LENGTH = 64K
+  DFU                               : ORIGIN = 0x00067000, LENGTH = 68K
+  RAM                         (rwx) : ORIGIN = 0x20018000, LENGTH = 32K
+}
+
+__bootloader_state_start = ORIGIN(BOOTLOADER_STATE);
+__bootloader_state_end = ORIGIN(BOOTLOADER_STATE) + LENGTH(BOOTLOADER_STATE);
+
+__bootloader_dfu_start = ORIGIN(DFU);
+__bootloader_dfu_end = ORIGIN(DFU) + LENGTH(DFU);
diff --git a/examples/boot/application/nrf/memory.x b/examples/boot/application/nrf/memory.x
index 3a54ca460..c6926e422 100644
--- a/examples/boot/application/nrf/memory.x
+++ b/examples/boot/application/nrf/memory.x
@@ -5,7 +5,7 @@ MEMORY
   BOOTLOADER_STATE                  : ORIGIN = 0x00006000, LENGTH = 4K
   FLASH                             : ORIGIN = 0x00007000, LENGTH = 64K
   DFU                               : ORIGIN = 0x00017000, LENGTH = 68K
-  RAM                         (rwx) : ORIGIN = 0x20000008, LENGTH = 32K
+  RAM                         (rwx) : ORIGIN = 0x20000000, LENGTH = 32K
 }
 
 __bootloader_state_start = ORIGIN(BOOTLOADER_STATE);
diff --git a/examples/boot/application/nrf/src/bin/a.rs b/examples/boot/application/nrf/src/bin/a.rs
index bd8fa3246..021d77f3b 100644
--- a/examples/boot/application/nrf/src/bin/a.rs
+++ b/examples/boot/application/nrf/src/bin/a.rs
@@ -1,42 +1,71 @@
 #![no_std]
 #![no_main]
 #![macro_use]
-#![feature(generic_associated_types)]
 #![feature(type_alias_impl_trait)]
 
-use embassy_boot_nrf::FirmwareUpdater;
+use embassy_boot_nrf::{FirmwareUpdater, FirmwareUpdaterConfig};
 use embassy_embedded_hal::adapter::BlockingAsync;
 use embassy_executor::Spawner;
 use embassy_nrf::gpio::{Input, Level, Output, OutputDrive, Pull};
 use embassy_nrf::nvmc::Nvmc;
+use embassy_nrf::wdt::{self, Watchdog};
+use embassy_sync::mutex::Mutex;
 use panic_reset as _;
 
+#[cfg(feature = "skip-include")]
+static APP_B: &[u8] = &[0, 1, 2, 3];
+#[cfg(not(feature = "skip-include"))]
 static APP_B: &[u8] = include_bytes!("../../b.bin");
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
     let p = embassy_nrf::init(Default::default());
+
     let mut button = Input::new(p.P0_11, Pull::Up);
     let mut led = Output::new(p.P0_13, Level::Low, OutputDrive::Standard);
+
     //let mut led = Output::new(p.P1_10, Level::Low, OutputDrive::Standard);
     //let mut button = Input::new(p.P1_02, Pull::Up);
 
+    // nRF91 DK
+    // let mut led = Output::new(p.P0_02, Level::Low, OutputDrive::Standard);
+    // let mut button = Input::new(p.P0_06, Pull::Up);
+
+    // The following code block illustrates how to obtain a watchdog that is configured
+    // as per the existing watchdog. Ordinarily, we'd use the handle returned to "pet" the
+    // watchdog periodically. If we don't, and we're not going to for this example, then
+    // the watchdog will cause the device to reset as per its configured timeout in the bootloader.
+    // This helps is avoid a situation where new firmware might be bad and block our executor.
+    // If firmware is bad in this way then the bootloader will revert to any previous version.
+    let wdt_config = wdt::Config::try_new(&p.WDT).unwrap();
+    let (_wdt, [_wdt_handle]) = match Watchdog::try_new(p.WDT, wdt_config) {
+        Ok(x) => x,
+        Err(_) => {
+            // Watchdog already active with the wrong number of handles, waiting for it to timeout...
+            loop {
+                cortex_m::asm::wfe();
+            }
+        }
+    };
+
     let nvmc = Nvmc::new(p.NVMC);
-    let mut nvmc = BlockingAsync::new(nvmc);
+    let nvmc = Mutex::new(BlockingAsync::new(nvmc));
 
-    let mut updater = FirmwareUpdater::default();
+    let config = FirmwareUpdaterConfig::from_linkerfile(&nvmc);
+    let mut updater = FirmwareUpdater::new(config);
     loop {
         led.set_low();
         button.wait_for_any_edge().await;
         if button.is_low() {
             let mut offset = 0;
+            let mut magic = [0; 4];
             for chunk in APP_B.chunks(4096) {
                 let mut buf: [u8; 4096] = [0; 4096];
                 buf[..chunk.len()].copy_from_slice(chunk);
-                updater.write_firmware(offset, &buf, &mut nvmc, 4096).await.unwrap();
+                updater.write_firmware(&mut magic, offset, &buf).await.unwrap();
                 offset += chunk.len();
             }
-            updater.update(&mut nvmc).await.unwrap();
+            updater.mark_updated(&mut magic).await.unwrap();
             led.set_high();
             cortex_m::peripheral::SCB::sys_reset();
         }
diff --git a/examples/boot/application/nrf/src/bin/b.rs b/examples/boot/application/nrf/src/bin/b.rs
index 5394bf0c7..15ebce5fa 100644
--- a/examples/boot/application/nrf/src/bin/b.rs
+++ b/examples/boot/application/nrf/src/bin/b.rs
@@ -1,7 +1,6 @@
 #![no_std]
 #![no_main]
 #![macro_use]
-#![feature(generic_associated_types)]
 #![feature(type_alias_impl_trait)]
 
 use embassy_executor::Spawner;
@@ -13,7 +12,10 @@ use panic_reset as _;
 async fn main(_spawner: Spawner) {
     let p = embassy_nrf::init(Default::default());
     let mut led = Output::new(p.P0_13, Level::Low, OutputDrive::Standard);
-    //let mut led = Output::new(p.P1_10, Level::Low, OutputDrive::Standard);
+    // let mut led = Output::new(p.P1_10, Level::Low, OutputDrive::Standard);
+
+    // nRF91 DK
+    // let mut led = Output::new(p.P0_02, Level::Low, OutputDrive::Standard);
 
     loop {
         led.set_high();
diff --git a/examples/boot/application/rp/.cargo/config.toml b/examples/boot/application/rp/.cargo/config.toml
new file mode 100644
index 000000000..cd8d1ef02
--- /dev/null
+++ b/examples/boot/application/rp/.cargo/config.toml
@@ -0,0 +1,12 @@
+[unstable]
+build-std = ["core"]
+build-std-features = ["panic_immediate_abort"]
+
+[target.'cfg(all(target_arch = "arm", target_os = "none"))']
+runner = "probe-rs run --chip RP2040"
+
+[build]
+target = "thumbv6m-none-eabi"
+
+[env]
+DEFMT_LOG = "trace"
diff --git a/examples/boot/application/rp/Cargo.toml b/examples/boot/application/rp/Cargo.toml
new file mode 100644
index 000000000..95b2da954
--- /dev/null
+++ b/examples/boot/application/rp/Cargo.toml
@@ -0,0 +1,35 @@
+[package]
+edition = "2021"
+name = "embassy-boot-rp-examples"
+version = "0.1.0"
+license = "MIT OR Apache-2.0"
+
+[dependencies]
+embassy-sync = { version = "0.2.0", path = "../../../../embassy-sync" }
+embassy-executor = { version = "0.2.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "nightly", "integrated-timers", "arch-cortex-m", "executor-thread"] }
+embassy-time = { version = "0.1.2", path = "../../../../embassy-time", features = ["nightly"] }
+embassy-rp = { version = "0.1.0", path = "../../../../embassy-rp", features = ["time-driver", "unstable-traits", "nightly"] }
+embassy-boot-rp = { version = "0.1.0", path = "../../../../embassy-boot/rp", features = ["nightly"] }
+embassy-embedded-hal = { version = "0.1.0", path = "../../../../embassy-embedded-hal" }
+
+defmt = "0.3"
+defmt-rtt = "0.4"
+panic-probe = { version = "0.3", features = ["print-defmt"], optional = true }
+panic-reset = { version = "0.1.1", optional = true }
+embedded-hal = { version = "0.2.6" }
+
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
+cortex-m-rt = "0.7.0"
+embedded-storage = "0.3.0"
+
+[features]
+default = ["panic-reset"]
+debug = [
+    "embassy-rp/defmt",
+    "embassy-boot-rp/defmt",
+    "panic-probe"
+]
+skip-include = []
+
+[profile.release]
+debug = true
diff --git a/examples/boot/application/rp/README.md b/examples/boot/application/rp/README.md
new file mode 100644
index 000000000..41304c526
--- /dev/null
+++ b/examples/boot/application/rp/README.md
@@ -0,0 +1,28 @@
+# Examples using bootloader
+
+Example for Raspberry Pi Pico demonstrating the bootloader. The example consists of application binaries, 'a'
+which waits for 5 seconds before flashing the 'b' binary, which blinks the LED.
+
+NOTE: The 'b' binary does not mark the new binary as active, so if you reset the device, it will roll back to the 'a' binary before automatically updating it again.
+
+## Prerequisites
+
+* `cargo-binutils`
+* `cargo-flash`
+* `embassy-boot-rp`
+
+## Usage
+
+```
+# Flash bootloader
+cargo flash --manifest-path ../../bootloader/rp/Cargo.toml --release --chip RP2040
+
+# Build 'b'
+cargo build --release --bin b
+
+# Generate binary for 'b'
+cargo objcopy --release --bin b -- -O binary b.bin
+
+# Flash `a` (which includes b.bin)
+cargo flash --release --bin a --chip RP2040
+```
diff --git a/examples/boot/application/rp/build.rs b/examples/boot/application/rp/build.rs
new file mode 100644
index 000000000..30691aa97
--- /dev/null
+++ b/examples/boot/application/rp/build.rs
@@ -0,0 +1,35 @@
+//! This build script copies the `memory.x` file from the crate root into
+//! a directory where the linker can always find it at build time.
+//! For many projects this is optional, as the linker always searches the
+//! project root directory -- wherever `Cargo.toml` is. However, if you
+//! are using a workspace or have a more complicated build setup, this
+//! build script becomes required. Additionally, by requesting that
+//! Cargo re-run the build script whenever `memory.x` is changed,
+//! updating `memory.x` ensures a rebuild of the application with the
+//! new memory settings.
+
+use std::env;
+use std::fs::File;
+use std::io::Write;
+use std::path::PathBuf;
+
+fn main() {
+    // Put `memory.x` in our output directory and ensure it's
+    // on the linker search path.
+    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
+    File::create(out.join("memory.x"))
+        .unwrap()
+        .write_all(include_bytes!("memory.x"))
+        .unwrap();
+    println!("cargo:rustc-link-search={}", out.display());
+
+    // By default, Cargo will re-run a build script whenever
+    // any file in the project changes. By specifying `memory.x`
+    // here, we ensure the build script is only re-run when
+    // `memory.x` is changed.
+    println!("cargo:rerun-if-changed=memory.x");
+
+    println!("cargo:rustc-link-arg-bins=--nmagic");
+    println!("cargo:rustc-link-arg-bins=-Tlink.x");
+    println!("cargo:rustc-link-arg-bins=-Tdefmt.x");
+}
diff --git a/examples/boot/application/rp/memory.x b/examples/boot/application/rp/memory.x
new file mode 100644
index 000000000..c19473114
--- /dev/null
+++ b/examples/boot/application/rp/memory.x
@@ -0,0 +1,15 @@
+MEMORY
+{
+  /* NOTE 1 K = 1 KiBi = 1024 bytes */
+  BOOT2                             : ORIGIN = 0x10000000, LENGTH = 0x100
+  BOOTLOADER_STATE                  : ORIGIN = 0x10006000, LENGTH = 4K
+  FLASH                             : ORIGIN = 0x10007000, LENGTH = 512K
+  DFU                               : ORIGIN = 0x10087000, LENGTH = 516K
+  RAM                               : ORIGIN = 0x20000000, LENGTH = 256K
+}
+
+__bootloader_state_start = ORIGIN(BOOTLOADER_STATE) - ORIGIN(BOOT2);
+__bootloader_state_end = ORIGIN(BOOTLOADER_STATE) + LENGTH(BOOTLOADER_STATE) - ORIGIN(BOOT2);
+
+__bootloader_dfu_start = ORIGIN(DFU) - ORIGIN(BOOT2);
+__bootloader_dfu_end = ORIGIN(DFU) + LENGTH(DFU) - ORIGIN(BOOT2);
diff --git a/examples/boot/application/rp/src/bin/a.rs b/examples/boot/application/rp/src/bin/a.rs
new file mode 100644
index 000000000..c8497494c
--- /dev/null
+++ b/examples/boot/application/rp/src/bin/a.rs
@@ -0,0 +1,67 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use core::cell::RefCell;
+
+use defmt_rtt as _;
+use embassy_boot_rp::*;
+use embassy_executor::Spawner;
+use embassy_rp::flash::Flash;
+use embassy_rp::gpio::{Level, Output};
+use embassy_rp::watchdog::Watchdog;
+use embassy_sync::blocking_mutex::Mutex;
+use embassy_time::{Duration, Timer};
+use embedded_storage::nor_flash::NorFlash;
+#[cfg(feature = "panic-probe")]
+use panic_probe as _;
+#[cfg(feature = "panic-reset")]
+use panic_reset as _;
+
+#[cfg(feature = "skip-include")]
+static APP_B: &[u8] = &[0, 1, 2, 3];
+#[cfg(not(feature = "skip-include"))]
+static APP_B: &[u8] = include_bytes!("../../b.bin");
+
+const FLASH_SIZE: usize = 2 * 1024 * 1024;
+
+#[embassy_executor::main]
+async fn main(_s: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    let mut led = Output::new(p.PIN_25, Level::Low);
+
+    // Override bootloader watchdog
+    let mut watchdog = Watchdog::new(p.WATCHDOG);
+    watchdog.start(Duration::from_secs(8));
+
+    let flash: Flash<_, FLASH_SIZE> = Flash::new(p.FLASH);
+    let flash = Mutex::new(RefCell::new(flash));
+
+    let config = FirmwareUpdaterConfig::from_linkerfile_blocking(&flash);
+    let mut updater = BlockingFirmwareUpdater::new(config);
+
+    Timer::after(Duration::from_secs(5)).await;
+    watchdog.feed();
+    led.set_high();
+    let mut offset = 0;
+    let mut buf: AlignedBuffer<4096> = AlignedBuffer([0; 4096]);
+    defmt::info!("preparing update");
+    let writer = updater
+        .prepare_update(&mut buf.0[..1])
+        .map_err(|e| defmt::warn!("E: {:?}", defmt::Debug2Format(&e)))
+        .unwrap();
+    defmt::info!("writer created, starting write");
+    for chunk in APP_B.chunks(4096) {
+        buf.0[..chunk.len()].copy_from_slice(chunk);
+        defmt::info!("writing block at offset {}", offset);
+        writer.write(offset, &buf.0[..]).unwrap();
+        offset += chunk.len() as u32;
+    }
+    watchdog.feed();
+    defmt::info!("firmware written, marking update");
+    updater.mark_updated(&mut buf.0[..1]).unwrap();
+    Timer::after(Duration::from_secs(2)).await;
+    led.set_low();
+    defmt::info!("update marked, resetting");
+    cortex_m::peripheral::SCB::sys_reset();
+}
diff --git a/examples/boot/application/rp/src/bin/b.rs b/examples/boot/application/rp/src/bin/b.rs
new file mode 100644
index 000000000..47dec329c
--- /dev/null
+++ b/examples/boot/application/rp/src/bin/b.rs
@@ -0,0 +1,23 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use embassy_executor::Spawner;
+use embassy_rp::gpio;
+use embassy_time::{Duration, Timer};
+use gpio::{Level, Output};
+use {defmt_rtt as _, panic_reset as _};
+
+#[embassy_executor::main]
+async fn main(_s: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    let mut led = Output::new(p.PIN_25, Level::Low);
+
+    loop {
+        led.set_high();
+        Timer::after(Duration::from_millis(100)).await;
+
+        led.set_low();
+        Timer::after(Duration::from_millis(100)).await;
+    }
+}
diff --git a/examples/boot/application/stm32f3/.cargo/config.toml b/examples/boot/application/stm32f3/.cargo/config.toml
index a76d6cab4..4a7ec0a5b 100644
--- a/examples/boot/application/stm32f3/.cargo/config.toml
+++ b/examples/boot/application/stm32f3/.cargo/config.toml
@@ -1,6 +1,6 @@
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
-# replace STM32F429ZITx with your chip as listed in `probe-run --list-chips`
-runner = "probe-run --chip STM32F303VCTx"
+# replace STM32F429ZITx with your chip as listed in `probe-rs chip list`
+runner = "probe-rs run --chip STM32F303VCTx"
 
 [build]
 target = "thumbv7em-none-eabihf"
diff --git a/examples/boot/application/stm32f3/Cargo.toml b/examples/boot/application/stm32f3/Cargo.toml
index f143d1e8d..3b0fc4d9d 100644
--- a/examples/boot/application/stm32f3/Cargo.toml
+++ b/examples/boot/application/stm32f3/Cargo.toml
@@ -2,21 +2,22 @@
 edition = "2021"
 name = "embassy-boot-stm32f3-examples"
 version = "0.1.0"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
-embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
+embassy-sync = { version = "0.2.0", path = "../../../../embassy-sync", features = ["defmt"] }
+embassy-executor = { version = "0.2.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "nightly", "integrated-timers"] }
+embassy-time = { version = "0.1.2", path = "../../../../embassy-time", features = ["nightly", "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32f303re", "time-driver-any", "exti"]  }
-embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32" }
+embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32", features = ["nightly"] }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../../embassy-embedded-hal" }
 
 defmt = { version = "0.3", optional = true }
-defmt-rtt = { version = "0.3", optional = true }
+defmt-rtt = { version = "0.4", optional = true }
 panic-reset = { version = "0.1.1" }
 embedded-hal = { version = "0.2.6" }
 
-cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
 cortex-m-rt = "0.7.0"
 
 [features]
@@ -25,3 +26,4 @@ defmt = [
       "embassy-stm32/defmt",
       "embassy-boot-stm32/defmt",
 ]
+skip-include = []
diff --git a/examples/boot/application/stm32f3/src/bin/a.rs b/examples/boot/application/stm32f3/src/bin/a.rs
index 11eecc5e2..c0a11d699 100644
--- a/examples/boot/application/stm32f3/src/bin/a.rs
+++ b/examples/boot/application/stm32f3/src/bin/a.rs
@@ -4,21 +4,25 @@
 
 #[cfg(feature = "defmt-rtt")]
 use defmt_rtt::*;
-use embassy_boot_stm32::FirmwareUpdater;
+use embassy_boot_stm32::{AlignedBuffer, FirmwareUpdater, FirmwareUpdaterConfig};
 use embassy_embedded_hal::adapter::BlockingAsync;
 use embassy_executor::Spawner;
 use embassy_stm32::exti::ExtiInput;
-use embassy_stm32::flash::Flash;
+use embassy_stm32::flash::{Flash, WRITE_SIZE};
 use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
+use embassy_sync::mutex::Mutex;
 use panic_reset as _;
 
+#[cfg(feature = "skip-include")]
+static APP_B: &[u8] = &[0, 1, 2, 3];
+#[cfg(not(feature = "skip-include"))]
 static APP_B: &[u8] = include_bytes!("../../b.bin");
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
     let p = embassy_stm32::init(Default::default());
-    let flash = Flash::unlock(p.FLASH);
-    let mut flash = BlockingAsync::new(flash);
+    let flash = Flash::new_blocking(p.FLASH);
+    let flash = Mutex::new(BlockingAsync::new(flash));
 
     let button = Input::new(p.PC13, Pull::Up);
     let mut button = ExtiInput::new(button, p.EXTI13);
@@ -26,16 +30,18 @@ async fn main(_spawner: Spawner) {
     let mut led = Output::new(p.PA5, Level::Low, Speed::Low);
     led.set_high();
 
-    let mut updater = FirmwareUpdater::default();
+    let config = FirmwareUpdaterConfig::from_linkerfile(&flash);
+    let mut updater = FirmwareUpdater::new(config);
     button.wait_for_falling_edge().await;
     let mut offset = 0;
+    let mut magic = AlignedBuffer([0; WRITE_SIZE]);
     for chunk in APP_B.chunks(2048) {
         let mut buf: [u8; 2048] = [0; 2048];
         buf[..chunk.len()].copy_from_slice(chunk);
-        updater.write_firmware(offset, &buf, &mut flash, 2048).await.unwrap();
+        updater.write_firmware(magic.as_mut(), offset, &buf).await.unwrap();
         offset += chunk.len();
     }
-    updater.update(&mut flash).await.unwrap();
+    updater.mark_updated(magic.as_mut()).await.unwrap();
     led.set_low();
     cortex_m::peripheral::SCB::sys_reset();
 }
diff --git a/examples/boot/application/stm32f7/.cargo/config.toml b/examples/boot/application/stm32f7/.cargo/config.toml
index a90e1ccbb..9088eea6e 100644
--- a/examples/boot/application/stm32f7/.cargo/config.toml
+++ b/examples/boot/application/stm32f7/.cargo/config.toml
@@ -1,6 +1,6 @@
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
-# replace STM32F429ZITx with your chip as listed in `probe-run --list-chips`
-runner = "probe-run --chip STM32F767ZITx -v"
+# replace STM32F429ZITx with your chip as listed in `probe-rs chip list`
+runner = "probe-rs run --chip STM32F767ZITx"
 
 [build]
 target = "thumbv7em-none-eabihf"
diff --git a/examples/boot/application/stm32f7/Cargo.toml b/examples/boot/application/stm32f7/Cargo.toml
index 29c87eee1..323b4ab2c 100644
--- a/examples/boot/application/stm32f7/Cargo.toml
+++ b/examples/boot/application/stm32f7/Cargo.toml
@@ -2,21 +2,23 @@
 edition = "2021"
 name = "embassy-boot-stm32f7-examples"
 version = "0.1.0"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
-embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
+embassy-sync = { version = "0.2.0", path = "../../../../embassy-sync", features = ["defmt"] }
+embassy-executor = { version = "0.2.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "nightly", "integrated-timers"] }
+embassy-time = { version = "0.1.2", path = "../../../../embassy-time", features = ["nightly", "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32f767zi", "time-driver-any", "exti"]  }
-embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32" }
+embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32", features = ["nightly"] }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../../embassy-embedded-hal" }
 
 defmt = { version = "0.3", optional = true }
-defmt-rtt = { version = "0.3", optional = true }
+defmt-rtt = { version = "0.4", optional = true }
 panic-reset = { version = "0.1.1" }
 embedded-hal = { version = "0.2.6" }
+embedded-storage = "0.3.0"
 
-cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
 cortex-m-rt = "0.7.0"
 
 [features]
@@ -25,3 +27,4 @@ defmt = [
       "embassy-stm32/defmt",
       "embassy-boot-stm32/defmt",
 ]
+skip-include = []
diff --git a/examples/boot/application/stm32f7/src/bin/a.rs b/examples/boot/application/stm32f7/src/bin/a.rs
index a3b66e7c9..dea682a96 100644
--- a/examples/boot/application/stm32f7/src/bin/a.rs
+++ b/examples/boot/application/stm32f7/src/bin/a.rs
@@ -2,23 +2,29 @@
 #![no_main]
 #![feature(type_alias_impl_trait)]
 
+use core::cell::RefCell;
+
 #[cfg(feature = "defmt-rtt")]
 use defmt_rtt::*;
-use embassy_boot_stm32::FirmwareUpdater;
-use embassy_embedded_hal::adapter::BlockingAsync;
+use embassy_boot_stm32::{AlignedBuffer, BlockingFirmwareUpdater, FirmwareUpdaterConfig};
 use embassy_executor::Spawner;
 use embassy_stm32::exti::ExtiInput;
-use embassy_stm32::flash::Flash;
+use embassy_stm32::flash::{Flash, WRITE_SIZE};
 use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
+use embassy_sync::blocking_mutex::Mutex;
+use embedded_storage::nor_flash::NorFlash;
 use panic_reset as _;
 
+#[cfg(feature = "skip-include")]
+static APP_B: &[u8] = &[0, 1, 2, 3];
+#[cfg(not(feature = "skip-include"))]
 static APP_B: &[u8] = include_bytes!("../../b.bin");
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
     let p = embassy_stm32::init(Default::default());
-    let flash = Flash::unlock(p.FLASH);
-    let mut flash = BlockingAsync::new(flash);
+    let flash = Flash::new_blocking(p.FLASH);
+    let flash = Mutex::new(RefCell::new(flash));
 
     let button = Input::new(p.PC13, Pull::Down);
     let mut button = ExtiInput::new(button, p.EXTI13);
@@ -26,16 +32,19 @@ async fn main(_spawner: Spawner) {
     let mut led = Output::new(p.PB7, Level::Low, Speed::Low);
     led.set_high();
 
-    let mut updater = FirmwareUpdater::default();
+    let config = FirmwareUpdaterConfig::from_linkerfile_blocking(&flash);
+    let mut updater = BlockingFirmwareUpdater::new(config);
+    let mut magic = AlignedBuffer([0; WRITE_SIZE]);
+    let writer = updater.prepare_update(magic.as_mut()).unwrap();
     button.wait_for_rising_edge().await;
     let mut offset = 0;
-    let mut buf: [u8; 256 * 1024] = [0; 256 * 1024];
-    for chunk in APP_B.chunks(256 * 1024) {
-        buf[..chunk.len()].copy_from_slice(chunk);
-        updater.write_firmware(offset, &buf, &mut flash, 2048).await.unwrap();
-        offset += chunk.len();
+    let mut buf = AlignedBuffer([0; 4096]);
+    for chunk in APP_B.chunks(4096) {
+        buf.as_mut()[..chunk.len()].copy_from_slice(chunk);
+        writer.write(offset, buf.as_ref()).unwrap();
+        offset += chunk.len() as u32;
     }
-    updater.update(&mut flash).await.unwrap();
+    updater.mark_updated(magic.as_mut()).unwrap();
     led.set_low();
     cortex_m::peripheral::SCB::sys_reset();
 }
diff --git a/examples/boot/application/stm32h7/.cargo/config.toml b/examples/boot/application/stm32h7/.cargo/config.toml
index fefdd370e..caa0d3a93 100644
--- a/examples/boot/application/stm32h7/.cargo/config.toml
+++ b/examples/boot/application/stm32h7/.cargo/config.toml
@@ -1,6 +1,6 @@
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
-# replace STM32F429ZITx with your chip as listed in `probe-run --list-chips`
-runner = "probe-run --chip STM32H743ZITx"
+# replace STM32F429ZITx with your chip as listed in `probe-rs chip list`
+runner = "probe-rs run --chip STM32H743ZITx"
 
 [build]
 target = "thumbv7em-none-eabihf"
diff --git a/examples/boot/application/stm32h7/Cargo.toml b/examples/boot/application/stm32h7/Cargo.toml
index 5669527fe..b2abdc891 100644
--- a/examples/boot/application/stm32h7/Cargo.toml
+++ b/examples/boot/application/stm32h7/Cargo.toml
@@ -2,21 +2,23 @@
 edition = "2021"
 name = "embassy-boot-stm32h7-examples"
 version = "0.1.0"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
-embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
+embassy-sync = { version = "0.2.0", path = "../../../../embassy-sync" }
+embassy-executor = { version = "0.2.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "nightly", "integrated-timers"] }
+embassy-time = { version = "0.1.2", path = "../../../../embassy-time", features = ["nightly", "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32h743zi", "time-driver-any", "exti"]  }
-embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32" }
+embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32", features = ["nightly"] }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../../embassy-embedded-hal" }
 
 defmt = { version = "0.3", optional = true }
-defmt-rtt = { version = "0.3", optional = true }
+defmt-rtt = { version = "0.4", optional = true }
 panic-reset = { version = "0.1.1" }
 embedded-hal = { version = "0.2.6" }
+embedded-storage = "0.3.0"
 
-cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
 cortex-m-rt = "0.7.0"
 
 [features]
@@ -25,3 +27,4 @@ defmt = [
       "embassy-stm32/defmt",
       "embassy-boot-stm32/defmt",
 ]
+skip-include = []
diff --git a/examples/boot/application/stm32h7/flash-boot.sh b/examples/boot/application/stm32h7/flash-boot.sh
index debdb17a7..4912a50b7 100755
--- a/examples/boot/application/stm32h7/flash-boot.sh
+++ b/examples/boot/application/stm32h7/flash-boot.sh
@@ -1,8 +1,9 @@
 #!/bin/bash
+probe-rs erase --chip STM32H743ZITx
 mv ../../bootloader/stm32/memory.x ../../bootloader/stm32/memory-old.x
 cp memory-bl.x ../../bootloader/stm32/memory.x
 
-cargo flash --manifest-path ../../bootloader/stm32/Cargo.toml --release --features embassy-stm32/stm32f767zi --chip STM32F767ZITx --target thumbv7em-none-eabihf
+cargo flash --manifest-path ../../bootloader/stm32/Cargo.toml --release --features embassy-stm32/stm32h743zi --chip STM32H743ZITx --target thumbv7em-none-eabihf
 
 rm ../../bootloader/stm32/memory.x
 mv ../../bootloader/stm32/memory-old.x ../../bootloader/stm32/memory.x
diff --git a/examples/boot/application/stm32h7/src/bin/a.rs b/examples/boot/application/stm32h7/src/bin/a.rs
index 0ecf60348..719176692 100644
--- a/examples/boot/application/stm32h7/src/bin/a.rs
+++ b/examples/boot/application/stm32h7/src/bin/a.rs
@@ -2,23 +2,29 @@
 #![no_main]
 #![feature(type_alias_impl_trait)]
 
+use core::cell::RefCell;
+
 #[cfg(feature = "defmt-rtt")]
 use defmt_rtt::*;
-use embassy_boot_stm32::FirmwareUpdater;
-use embassy_embedded_hal::adapter::BlockingAsync;
+use embassy_boot_stm32::{AlignedBuffer, BlockingFirmwareUpdater, FirmwareUpdaterConfig};
 use embassy_executor::Spawner;
 use embassy_stm32::exti::ExtiInput;
-use embassy_stm32::flash::Flash;
+use embassy_stm32::flash::{Flash, WRITE_SIZE};
 use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
+use embassy_sync::blocking_mutex::Mutex;
+use embedded_storage::nor_flash::NorFlash;
 use panic_reset as _;
 
+#[cfg(feature = "skip-include")]
+static APP_B: &[u8] = &[0, 1, 2, 3];
+#[cfg(not(feature = "skip-include"))]
 static APP_B: &[u8] = include_bytes!("../../b.bin");
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
     let p = embassy_stm32::init(Default::default());
-    let flash = Flash::unlock(p.FLASH);
-    let mut flash = BlockingAsync::new(flash);
+    let flash = Flash::new_blocking(p.FLASH);
+    let flash = Mutex::new(RefCell::new(flash));
 
     let button = Input::new(p.PC13, Pull::Down);
     let mut button = ExtiInput::new(button, p.EXTI13);
@@ -26,16 +32,19 @@ async fn main(_spawner: Spawner) {
     let mut led = Output::new(p.PB14, Level::Low, Speed::Low);
     led.set_high();
 
-    let mut updater = FirmwareUpdater::default();
+    let config = FirmwareUpdaterConfig::from_linkerfile_blocking(&flash);
+    let mut magic = AlignedBuffer([0; WRITE_SIZE]);
+    let mut updater = BlockingFirmwareUpdater::new(config);
+    let writer = updater.prepare_update(magic.as_mut()).unwrap();
     button.wait_for_rising_edge().await;
     let mut offset = 0;
-    let mut buf: [u8; 128 * 1024] = [0; 128 * 1024];
-    for chunk in APP_B.chunks(128 * 1024) {
-        buf[..chunk.len()].copy_from_slice(chunk);
-        updater.write_firmware(offset, &buf, &mut flash, 2048).await.unwrap();
-        offset += chunk.len();
+    let mut buf = AlignedBuffer([0; 4096]);
+    for chunk in APP_B.chunks(4096) {
+        buf.as_mut()[..chunk.len()].copy_from_slice(chunk);
+        writer.write(offset, buf.as_ref()).unwrap();
+        offset += chunk.len() as u32;
     }
-    updater.update(&mut flash).await.unwrap();
+    updater.mark_updated(magic.as_mut()).unwrap();
     led.set_low();
     cortex_m::peripheral::SCB::sys_reset();
 }
diff --git a/examples/boot/application/stm32l0/.cargo/config.toml b/examples/boot/application/stm32l0/.cargo/config.toml
index 2627967ab..6099f015c 100644
--- a/examples/boot/application/stm32l0/.cargo/config.toml
+++ b/examples/boot/application/stm32l0/.cargo/config.toml
@@ -1,6 +1,6 @@
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
-# replace your chip as listed in `probe-run --list-chips`
-runner = "probe-run --chip STM32L072CZTx"
+# replace your chip as listed in `probe-rs chip list`
+runner = "probe-rs run --chip STM32L072CZTx"
 
 [build]
 target = "thumbv6m-none-eabi"
diff --git a/examples/boot/application/stm32l0/Cargo.toml b/examples/boot/application/stm32l0/Cargo.toml
index 48624d5ec..0b7e72d5e 100644
--- a/examples/boot/application/stm32l0/Cargo.toml
+++ b/examples/boot/application/stm32l0/Cargo.toml
@@ -2,21 +2,22 @@
 edition = "2021"
 name = "embassy-boot-stm32l0-examples"
 version = "0.1.0"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
-embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
+embassy-sync = { version = "0.2.0", path = "../../../../embassy-sync", features = ["defmt"] }
+embassy-executor = { version = "0.2.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "nightly", "integrated-timers"] }
+embassy-time = { version = "0.1.2", path = "../../../../embassy-time", features = ["nightly", "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32l072cz", "time-driver-any", "exti", "memory-x"]  }
-embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32" }
+embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32", features = ["nightly"] }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../../embassy-embedded-hal" }
 
 defmt = { version = "0.3", optional = true }
-defmt-rtt = { version = "0.3", optional = true }
+defmt-rtt = { version = "0.4", optional = true }
 panic-reset = { version = "0.1.1" }
 embedded-hal = { version = "0.2.6" }
 
-cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
 cortex-m-rt = "0.7.0"
 
 [features]
@@ -25,3 +26,4 @@ defmt = [
       "embassy-stm32/defmt",
       "embassy-boot-stm32/defmt",
 ]
+skip-include = []
diff --git a/examples/boot/application/stm32l0/src/bin/a.rs b/examples/boot/application/stm32l0/src/bin/a.rs
index f4f1d7119..ce80056e6 100644
--- a/examples/boot/application/stm32l0/src/bin/a.rs
+++ b/examples/boot/application/stm32l0/src/bin/a.rs
@@ -4,22 +4,26 @@
 
 #[cfg(feature = "defmt-rtt")]
 use defmt_rtt::*;
-use embassy_boot_stm32::FirmwareUpdater;
+use embassy_boot_stm32::{AlignedBuffer, FirmwareUpdater, FirmwareUpdaterConfig};
 use embassy_embedded_hal::adapter::BlockingAsync;
 use embassy_executor::Spawner;
 use embassy_stm32::exti::ExtiInput;
-use embassy_stm32::flash::Flash;
+use embassy_stm32::flash::{Flash, WRITE_SIZE};
 use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
+use embassy_sync::mutex::Mutex;
 use embassy_time::{Duration, Timer};
 use panic_reset as _;
 
+#[cfg(feature = "skip-include")]
+static APP_B: &[u8] = &[0, 1, 2, 3];
+#[cfg(not(feature = "skip-include"))]
 static APP_B: &[u8] = include_bytes!("../../b.bin");
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
     let p = embassy_stm32::init(Default::default());
-    let flash = Flash::unlock(p.FLASH);
-    let mut flash = BlockingAsync::new(flash);
+    let flash = Flash::new_blocking(p.FLASH);
+    let flash = Mutex::new(BlockingAsync::new(flash));
 
     let button = Input::new(p.PB2, Pull::Up);
     let mut button = ExtiInput::new(button, p.EXTI2);
@@ -28,17 +32,19 @@ async fn main(_spawner: Spawner) {
 
     led.set_high();
 
-    let mut updater = FirmwareUpdater::default();
+    let config = FirmwareUpdaterConfig::from_linkerfile(&flash);
+    let mut updater = FirmwareUpdater::new(config);
     button.wait_for_falling_edge().await;
     let mut offset = 0;
+    let mut magic = AlignedBuffer([0; WRITE_SIZE]);
     for chunk in APP_B.chunks(128) {
         let mut buf: [u8; 128] = [0; 128];
         buf[..chunk.len()].copy_from_slice(chunk);
-        updater.write_firmware(offset, &buf, &mut flash, 128).await.unwrap();
+        updater.write_firmware(magic.as_mut(), offset, &buf).await.unwrap();
         offset += chunk.len();
     }
 
-    updater.update(&mut flash).await.unwrap();
+    updater.mark_updated(magic.as_mut()).await.unwrap();
     led.set_low();
     Timer::after(Duration::from_secs(1)).await;
     cortex_m::peripheral::SCB::sys_reset();
diff --git a/examples/boot/application/stm32l1/.cargo/config.toml b/examples/boot/application/stm32l1/.cargo/config.toml
index 404b6b55c..9cabd14ba 100644
--- a/examples/boot/application/stm32l1/.cargo/config.toml
+++ b/examples/boot/application/stm32l1/.cargo/config.toml
@@ -1,6 +1,6 @@
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
-# replace your chip as listed in `probe-run --list-chips`
-runner = "probe-run --chip STM32L151CBxxA"
+# replace your chip as listed in `probe-rs chip list`
+runner = "probe-rs run --chip STM32L151CBxxA"
 
 [build]
 target = "thumbv7m-none-eabi"
diff --git a/examples/boot/application/stm32l1/Cargo.toml b/examples/boot/application/stm32l1/Cargo.toml
index 00b638ca5..5f3f365c1 100644
--- a/examples/boot/application/stm32l1/Cargo.toml
+++ b/examples/boot/application/stm32l1/Cargo.toml
@@ -2,21 +2,22 @@
 edition = "2021"
 name = "embassy-boot-stm32l1-examples"
 version = "0.1.0"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
-embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
+embassy-sync = { version = "0.2.0", path = "../../../../embassy-sync", features = ["defmt"] }
+embassy-executor = { version = "0.2.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "nightly", "integrated-timers"] }
+embassy-time = { version = "0.1.2", path = "../../../../embassy-time", features = ["nightly", "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32l151cb-a", "time-driver-any", "exti"]  }
-embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32" }
+embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32", features = ["nightly"] }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../../embassy-embedded-hal" }
 
 defmt = { version = "0.3", optional = true }
-defmt-rtt = { version = "0.3", optional = true }
+defmt-rtt = { version = "0.4", optional = true }
 panic-reset = { version = "0.1.1" }
 embedded-hal = { version = "0.2.6" }
 
-cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
 cortex-m-rt = "0.7.0"
 
 [features]
@@ -25,3 +26,4 @@ defmt = [
       "embassy-stm32/defmt",
       "embassy-boot-stm32/defmt",
 ]
+skip-include = []
diff --git a/examples/boot/application/stm32l1/src/bin/a.rs b/examples/boot/application/stm32l1/src/bin/a.rs
index f4f1d7119..1e9bf3cb9 100644
--- a/examples/boot/application/stm32l1/src/bin/a.rs
+++ b/examples/boot/application/stm32l1/src/bin/a.rs
@@ -4,22 +4,26 @@
 
 #[cfg(feature = "defmt-rtt")]
 use defmt_rtt::*;
-use embassy_boot_stm32::FirmwareUpdater;
+use embassy_boot_stm32::{AlignedBuffer, FirmwareUpdater, FirmwareUpdaterConfig};
 use embassy_embedded_hal::adapter::BlockingAsync;
 use embassy_executor::Spawner;
 use embassy_stm32::exti::ExtiInput;
-use embassy_stm32::flash::Flash;
+use embassy_stm32::flash::{Flash, WRITE_SIZE};
 use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
+use embassy_sync::mutex::Mutex;
 use embassy_time::{Duration, Timer};
 use panic_reset as _;
 
+#[cfg(feature = "skip-include")]
+static APP_B: &[u8] = &[0, 1, 2, 3];
+#[cfg(not(feature = "skip-include"))]
 static APP_B: &[u8] = include_bytes!("../../b.bin");
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
     let p = embassy_stm32::init(Default::default());
-    let flash = Flash::unlock(p.FLASH);
-    let mut flash = BlockingAsync::new(flash);
+    let flash = Flash::new_blocking(p.FLASH);
+    let flash = Mutex::new(BlockingAsync::new(flash));
 
     let button = Input::new(p.PB2, Pull::Up);
     let mut button = ExtiInput::new(button, p.EXTI2);
@@ -28,17 +32,19 @@ async fn main(_spawner: Spawner) {
 
     led.set_high();
 
-    let mut updater = FirmwareUpdater::default();
+    let config = FirmwareUpdaterConfig::from_linkerfile(&flash);
+    let mut updater = FirmwareUpdater::new(config);
     button.wait_for_falling_edge().await;
+    let mut magic = AlignedBuffer([0; WRITE_SIZE]);
     let mut offset = 0;
     for chunk in APP_B.chunks(128) {
         let mut buf: [u8; 128] = [0; 128];
         buf[..chunk.len()].copy_from_slice(chunk);
-        updater.write_firmware(offset, &buf, &mut flash, 128).await.unwrap();
+        updater.write_firmware(magic.as_mut(), offset, &buf).await.unwrap();
         offset += chunk.len();
     }
 
-    updater.update(&mut flash).await.unwrap();
+    updater.mark_updated(magic.as_mut()).await.unwrap();
     led.set_low();
     Timer::after(Duration::from_secs(1)).await;
     cortex_m::peripheral::SCB::sys_reset();
diff --git a/examples/boot/application/stm32l4/.cargo/config.toml b/examples/boot/application/stm32l4/.cargo/config.toml
index 43520e323..c803215f6 100644
--- a/examples/boot/application/stm32l4/.cargo/config.toml
+++ b/examples/boot/application/stm32l4/.cargo/config.toml
@@ -1,6 +1,6 @@
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
-# replace your chip as listed in `probe-run --list-chips`
-runner = "probe-run --chip STM32L475VG"
+# replace your chip as listed in `probe-rs chip list`
+runner = "probe-rs run --chip STM32L475VG"
 
 [build]
 target = "thumbv7em-none-eabihf"
diff --git a/examples/boot/application/stm32l4/Cargo.toml b/examples/boot/application/stm32l4/Cargo.toml
index 51ba730d5..44eb5aba8 100644
--- a/examples/boot/application/stm32l4/Cargo.toml
+++ b/examples/boot/application/stm32l4/Cargo.toml
@@ -2,21 +2,22 @@
 edition = "2021"
 name = "embassy-boot-stm32l4-examples"
 version = "0.1.0"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
-embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
+embassy-sync = { version = "0.2.0", path = "../../../../embassy-sync", features = ["defmt"] }
+embassy-executor = { version = "0.2.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "nightly", "integrated-timers"] }
+embassy-time = { version = "0.1.2", path = "../../../../embassy-time", features = ["nightly", "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32l475vg", "time-driver-any", "exti"]  }
-embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32" }
+embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32", features = ["nightly"] }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../../embassy-embedded-hal" }
 
 defmt = { version = "0.3", optional = true }
-defmt-rtt = { version = "0.3", optional = true }
+defmt-rtt = { version = "0.4", optional = true }
 panic-reset = { version = "0.1.1" }
 embedded-hal = { version = "0.2.6" }
 
-cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
 cortex-m-rt = "0.7.0"
 
 [features]
@@ -25,3 +26,4 @@ defmt = [
       "embassy-stm32/defmt",
       "embassy-boot-stm32/defmt",
 ]
+skip-include = []
diff --git a/examples/boot/application/stm32l4/src/bin/a.rs b/examples/boot/application/stm32l4/src/bin/a.rs
index 178b2e04a..a514ab5be 100644
--- a/examples/boot/application/stm32l4/src/bin/a.rs
+++ b/examples/boot/application/stm32l4/src/bin/a.rs
@@ -4,21 +4,25 @@
 
 #[cfg(feature = "defmt-rtt")]
 use defmt_rtt::*;
-use embassy_boot_stm32::FirmwareUpdater;
+use embassy_boot_stm32::{AlignedBuffer, FirmwareUpdater, FirmwareUpdaterConfig};
 use embassy_embedded_hal::adapter::BlockingAsync;
 use embassy_executor::Spawner;
 use embassy_stm32::exti::ExtiInput;
-use embassy_stm32::flash::Flash;
+use embassy_stm32::flash::{Flash, WRITE_SIZE};
 use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
+use embassy_sync::mutex::Mutex;
 use panic_reset as _;
 
+#[cfg(feature = "skip-include")]
+static APP_B: &[u8] = &[0, 1, 2, 3];
+#[cfg(not(feature = "skip-include"))]
 static APP_B: &[u8] = include_bytes!("../../b.bin");
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
     let p = embassy_stm32::init(Default::default());
-    let flash = Flash::unlock(p.FLASH);
-    let mut flash = BlockingAsync::new(flash);
+    let flash = Flash::new_blocking(p.FLASH);
+    let flash = Mutex::new(BlockingAsync::new(flash));
 
     let button = Input::new(p.PC13, Pull::Up);
     let mut button = ExtiInput::new(button, p.EXTI13);
@@ -26,16 +30,18 @@ async fn main(_spawner: Spawner) {
     let mut led = Output::new(p.PB14, Level::Low, Speed::Low);
     led.set_high();
 
-    let mut updater = FirmwareUpdater::default();
+    let config = FirmwareUpdaterConfig::from_linkerfile(&flash);
+    let mut updater = FirmwareUpdater::new(config);
     button.wait_for_falling_edge().await;
+    let mut magic = AlignedBuffer([0; WRITE_SIZE]);
     let mut offset = 0;
     for chunk in APP_B.chunks(2048) {
         let mut buf: [u8; 2048] = [0; 2048];
         buf[..chunk.len()].copy_from_slice(chunk);
-        updater.write_firmware(offset, &buf, &mut flash, 2048).await.unwrap();
+        updater.write_firmware(magic.as_mut(), offset, &buf).await.unwrap();
         offset += chunk.len();
     }
-    updater.update(&mut flash).await.unwrap();
+    updater.mark_updated(magic.as_mut()).await.unwrap();
     led.set_low();
     cortex_m::peripheral::SCB::sys_reset();
 }
diff --git a/examples/boot/application/stm32wl/.cargo/config.toml b/examples/boot/application/stm32wl/.cargo/config.toml
index e395d75b4..4f8094ff2 100644
--- a/examples/boot/application/stm32wl/.cargo/config.toml
+++ b/examples/boot/application/stm32wl/.cargo/config.toml
@@ -1,6 +1,6 @@
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
-# replace your chip as listed in `probe-run --list-chips`
-runner = "probe-run --chip STM32WLE5JCIx"
+# replace your chip as listed in `probe-rs chip list`
+runner = "probe-rs run --chip STM32WLE5JCIx"
 
 [build]
 target = "thumbv7em-none-eabihf"
diff --git a/examples/boot/application/stm32wl/Cargo.toml b/examples/boot/application/stm32wl/Cargo.toml
index 182acf694..fdad55060 100644
--- a/examples/boot/application/stm32wl/Cargo.toml
+++ b/examples/boot/application/stm32wl/Cargo.toml
@@ -2,21 +2,22 @@
 edition = "2021"
 name = "embassy-boot-stm32wl-examples"
 version = "0.1.0"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
-embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
-embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
-embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
+embassy-sync = { version = "0.2.0", path = "../../../../embassy-sync", features = ["defmt"] }
+embassy-executor = { version = "0.2.0", path = "../../../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "nightly", "integrated-timers"] }
+embassy-time = { version = "0.1.2", path = "../../../../embassy-time", features = ["nightly", "tick-hz-32_768"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32wl55jc-cm4", "time-driver-any", "exti"]  }
-embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32" }
+embassy-boot-stm32 = { version = "0.1.0", path = "../../../../embassy-boot/stm32", features = ["nightly"] }
 embassy-embedded-hal = { version = "0.1.0", path = "../../../../embassy-embedded-hal" }
 
 defmt = { version = "0.3", optional = true }
-defmt-rtt = { version = "0.3", optional = true }
+defmt-rtt = { version = "0.4", optional = true }
 panic-reset = { version = "0.1.1" }
 embedded-hal = { version = "0.2.6" }
 
-cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
 cortex-m-rt = "0.7.0"
 
 [features]
@@ -25,3 +26,4 @@ defmt = [
       "embassy-stm32/defmt",
       "embassy-boot-stm32/defmt",
 ]
+skip-include = []
diff --git a/examples/boot/application/stm32wl/src/bin/a.rs b/examples/boot/application/stm32wl/src/bin/a.rs
index c71a42654..52a197a5c 100644
--- a/examples/boot/application/stm32wl/src/bin/a.rs
+++ b/examples/boot/application/stm32wl/src/bin/a.rs
@@ -4,21 +4,25 @@
 
 #[cfg(feature = "defmt-rtt")]
 use defmt_rtt::*;
-use embassy_boot_stm32::FirmwareUpdater;
+use embassy_boot_stm32::{AlignedBuffer, FirmwareUpdater, FirmwareUpdaterConfig};
 use embassy_embedded_hal::adapter::BlockingAsync;
 use embassy_executor::Spawner;
 use embassy_stm32::exti::ExtiInput;
-use embassy_stm32::flash::Flash;
+use embassy_stm32::flash::{Flash, WRITE_SIZE};
 use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
+use embassy_sync::mutex::Mutex;
 use panic_reset as _;
 
+#[cfg(feature = "skip-include")]
+static APP_B: &[u8] = &[0, 1, 2, 3];
+#[cfg(not(feature = "skip-include"))]
 static APP_B: &[u8] = include_bytes!("../../b.bin");
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
     let p = embassy_stm32::init(Default::default());
-    let flash = Flash::unlock(p.FLASH);
-    let mut flash = BlockingAsync::new(flash);
+    let flash = Flash::new_blocking(p.FLASH);
+    let flash = Mutex::new(BlockingAsync::new(flash));
 
     let button = Input::new(p.PA0, Pull::Up);
     let mut button = ExtiInput::new(button, p.EXTI0);
@@ -26,18 +30,20 @@ async fn main(_spawner: Spawner) {
     let mut led = Output::new(p.PB9, Level::Low, Speed::Low);
     led.set_high();
 
-    let mut updater = FirmwareUpdater::default();
+    let config = FirmwareUpdaterConfig::from_linkerfile(&flash);
+    let mut updater = FirmwareUpdater::new(config);
     button.wait_for_falling_edge().await;
     //defmt::info!("Starting update");
+    let mut magic = AlignedBuffer([0; WRITE_SIZE]);
     let mut offset = 0;
     for chunk in APP_B.chunks(2048) {
         let mut buf: [u8; 2048] = [0; 2048];
         buf[..chunk.len()].copy_from_slice(chunk);
         //        defmt::info!("Writing chunk at 0x{:x}", offset);
-        updater.write_firmware(offset, &buf, &mut flash, 2048).await.unwrap();
+        updater.write_firmware(magic.as_mut(), offset, &buf).await.unwrap();
         offset += chunk.len();
     }
-    updater.update(&mut flash).await.unwrap();
+    updater.mark_updated(magic.as_mut()).await.unwrap();
     //defmt::info!("Marked as updated");
     led.set_low();
     cortex_m::peripheral::SCB::sys_reset();
diff --git a/examples/boot/bootloader/nrf/.cargo/config.toml b/examples/boot/bootloader/nrf/.cargo/config.toml
index 1060800a3..c292846aa 100644
--- a/examples/boot/bootloader/nrf/.cargo/config.toml
+++ b/examples/boot/bootloader/nrf/.cargo/config.toml
@@ -4,7 +4,7 @@ build-std-features = ["panic_immediate_abort"]
 
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
 #runner = "./fruitrunner"
-runner = "probe-run --chip nrf52840_xxAA"
+runner = "probe-rs run --chip nrf52840_xxAA"
 
 rustflags = [
   # Code-size optimizations.
diff --git a/examples/boot/bootloader/nrf/Cargo.toml b/examples/boot/bootloader/nrf/Cargo.toml
index aa2a13ecb..40656f359 100644
--- a/examples/boot/bootloader/nrf/Cargo.toml
+++ b/examples/boot/bootloader/nrf/Cargo.toml
@@ -3,14 +3,16 @@ edition = "2021"
 name = "nrf-bootloader-example"
 version = "0.1.0"
 description = "Bootloader for nRF chips"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
 defmt = { version = "0.3", optional = true }
-defmt-rtt = { version = "0.3", optional = true }
+defmt-rtt = { version = "0.4", optional = true }
 
-embassy-nrf = { path = "../../../../embassy-nrf", default-features = false, features = ["nightly"] }
-embassy-boot-nrf = { path = "../../../../embassy-boot/nrf", default-features = false }
-cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
+embassy-nrf = { path = "../../../../embassy-nrf", features = ["nightly"] }
+embassy-boot-nrf = { path = "../../../../embassy-boot/nrf" }
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
+embassy-sync = { path = "../../../../embassy-sync" }
 cortex-m-rt = { version = "0.7" }
 cfg-if = "1.0.0"
 
diff --git a/examples/boot/bootloader/nrf/memory-bm.x b/examples/boot/bootloader/nrf/memory-bm.x
index 8a32b905f..257d65644 100644
--- a/examples/boot/bootloader/nrf/memory-bm.x
+++ b/examples/boot/bootloader/nrf/memory-bm.x
@@ -5,7 +5,7 @@ MEMORY
   BOOTLOADER_STATE                  : ORIGIN = 0x00006000, LENGTH = 4K
   ACTIVE                            : ORIGIN = 0x00007000, LENGTH = 64K
   DFU                               : ORIGIN = 0x00017000, LENGTH = 68K
-  RAM                         (rwx) : ORIGIN = 0x20000008, LENGTH = 32K
+  RAM                         (rwx) : ORIGIN = 0x20000000, LENGTH = 32K
 }
 
 __bootloader_state_start = ORIGIN(BOOTLOADER_STATE);
diff --git a/examples/boot/bootloader/nrf/memory.x b/examples/boot/bootloader/nrf/memory.x
index 8a32b905f..257d65644 100644
--- a/examples/boot/bootloader/nrf/memory.x
+++ b/examples/boot/bootloader/nrf/memory.x
@@ -5,7 +5,7 @@ MEMORY
   BOOTLOADER_STATE                  : ORIGIN = 0x00006000, LENGTH = 4K
   ACTIVE                            : ORIGIN = 0x00007000, LENGTH = 64K
   DFU                               : ORIGIN = 0x00017000, LENGTH = 68K
-  RAM                         (rwx) : ORIGIN = 0x20000008, LENGTH = 32K
+  RAM                         (rwx) : ORIGIN = 0x20000000, LENGTH = 32K
 }
 
 __bootloader_state_start = ORIGIN(BOOTLOADER_STATE);
diff --git a/examples/boot/bootloader/nrf/src/main.rs b/examples/boot/bootloader/nrf/src/main.rs
index bc7e0755f..72c95c02a 100644
--- a/examples/boot/bootloader/nrf/src/main.rs
+++ b/examples/boot/bootloader/nrf/src/main.rs
@@ -1,11 +1,15 @@
 #![no_std]
 #![no_main]
 
+use core::cell::RefCell;
+
 use cortex_m_rt::{entry, exception};
 #[cfg(feature = "defmt")]
 use defmt_rtt as _;
 use embassy_boot_nrf::*;
 use embassy_nrf::nvmc::Nvmc;
+use embassy_nrf::wdt;
+use embassy_sync::blocking_mutex::Mutex;
 
 #[entry]
 fn main() -> ! {
@@ -19,13 +23,21 @@ fn main() -> ! {
         }
     */
 
-    let mut bl = BootLoader::default();
-    let start = bl.prepare(&mut SingleFlashProvider::new(&mut WatchdogFlash::start(
-        Nvmc::new(p.NVMC),
-        p.WDT,
-        5,
-    )));
-    unsafe { bl.load(start) }
+    let mut wdt_config = wdt::Config::default();
+    wdt_config.timeout_ticks = 32768 * 5; // timeout seconds
+    wdt_config.run_during_sleep = true;
+    wdt_config.run_during_debug_halt = false;
+
+    let flash = WatchdogFlash::start(Nvmc::new(p.NVMC), p.WDT, wdt_config);
+    let flash = Mutex::new(RefCell::new(flash));
+
+    let config = BootLoaderConfig::from_linkerfile_blocking(&flash);
+    let active_offset = config.active.offset();
+    let mut bl: BootLoader<_, _, _> = BootLoader::new(config);
+
+    bl.prepare();
+
+    unsafe { bl.load(active_offset) }
 }
 
 #[no_mangle]
diff --git a/examples/boot/bootloader/rp/.cargo/config.toml b/examples/boot/bootloader/rp/.cargo/config.toml
new file mode 100644
index 000000000..9d48ecdc9
--- /dev/null
+++ b/examples/boot/bootloader/rp/.cargo/config.toml
@@ -0,0 +1,8 @@
+[target.'cfg(all(target_arch = "arm", target_os = "none"))']
+runner = "probe-rs run --chip RP2040"
+
+[build]
+target = "thumbv6m-none-eabi"
+
+[env]
+DEFMT_LOG = "trace"
diff --git a/examples/boot/bootloader/rp/Cargo.toml b/examples/boot/bootloader/rp/Cargo.toml
new file mode 100644
index 000000000..c1dc99eec
--- /dev/null
+++ b/examples/boot/bootloader/rp/Cargo.toml
@@ -0,0 +1,33 @@
+[package]
+edition = "2021"
+name = "rp-bootloader-example"
+version = "0.1.0"
+description = "Example bootloader for RP2040 chips"
+license = "MIT OR Apache-2.0"
+
+[dependencies]
+defmt = { version = "0.3", optional = true }
+defmt-rtt = { version = "0.4", optional = true }
+
+embassy-rp = { path = "../../../../embassy-rp", features = ["nightly"] }
+embassy-boot-rp = { path = "../../../../embassy-boot/rp" }
+embassy-sync = { path = "../../../../embassy-sync" }
+embassy-time = { path = "../../../../embassy-time", features = ["nightly"] }
+
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
+cortex-m-rt = { version = "0.7" }
+embedded-storage = "0.3.0"
+embedded-storage-async = "0.4.0"
+cfg-if = "1.0.0"
+
+[features]
+defmt = [
+    "dep:defmt",
+    "embassy-boot-rp/defmt",
+    "embassy-rp/defmt",
+]
+debug = ["defmt-rtt", "defmt"]
+
+[profile.release]
+debug = true
+opt-level = 's'
diff --git a/examples/boot/bootloader/rp/README.md b/examples/boot/bootloader/rp/README.md
new file mode 100644
index 000000000..064e87273
--- /dev/null
+++ b/examples/boot/bootloader/rp/README.md
@@ -0,0 +1,17 @@
+# Bootloader for RP2040
+
+The bootloader uses `embassy-boot` to interact with the flash.
+
+# Usage
+
+Flashing the bootloader
+
+```
+cargo flash --release --chip RP2040
+```
+
+To debug, use `cargo run` and enable the debug feature flag
+
+``` rust
+cargo run --release --features debug
+```
diff --git a/examples/boot/bootloader/rp/build.rs b/examples/boot/bootloader/rp/build.rs
new file mode 100644
index 000000000..c201704ad
--- /dev/null
+++ b/examples/boot/bootloader/rp/build.rs
@@ -0,0 +1,28 @@
+use std::env;
+use std::fs::File;
+use std::io::Write;
+use std::path::PathBuf;
+
+fn main() {
+    // Put `memory.x` in our output directory and ensure it's
+    // on the linker search path.
+    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
+    File::create(out.join("memory.x"))
+        .unwrap()
+        .write_all(include_bytes!("memory.x"))
+        .unwrap();
+    println!("cargo:rustc-link-search={}", out.display());
+
+    // By default, Cargo will re-run a build script whenever
+    // any file in the project changes. By specifying `memory.x`
+    // here, we ensure the build script is only re-run when
+    // `memory.x` is changed.
+    println!("cargo:rerun-if-changed=memory.x");
+
+    println!("cargo:rustc-link-arg-bins=--nmagic");
+    println!("cargo:rustc-link-arg-bins=-Tlink.x");
+    println!("cargo:rustc-link-arg-bins=-Tlink-rp.x");
+    if env::var("CARGO_FEATURE_DEFMT").is_ok() {
+        println!("cargo:rustc-link-arg-bins=-Tdefmt.x");
+    }
+}
diff --git a/examples/boot/bootloader/rp/memory.x b/examples/boot/bootloader/rp/memory.x
new file mode 100644
index 000000000..d6ef38469
--- /dev/null
+++ b/examples/boot/bootloader/rp/memory.x
@@ -0,0 +1,19 @@
+MEMORY
+{
+  /* NOTE 1 K = 1 KiBi = 1024 bytes */
+  BOOT2                             : ORIGIN = 0x10000000, LENGTH = 0x100
+  FLASH                             : ORIGIN = 0x10000100, LENGTH = 24K
+  BOOTLOADER_STATE                  : ORIGIN = 0x10006000, LENGTH = 4K
+  ACTIVE                            : ORIGIN = 0x10007000, LENGTH = 512K
+  DFU                               : ORIGIN = 0x10087000, LENGTH = 516K
+  RAM                               : ORIGIN = 0x20000000, LENGTH = 256K
+}
+
+__bootloader_state_start = ORIGIN(BOOTLOADER_STATE) - ORIGIN(BOOT2);
+__bootloader_state_end = ORIGIN(BOOTLOADER_STATE) + LENGTH(BOOTLOADER_STATE) - ORIGIN(BOOT2);
+
+__bootloader_active_start = ORIGIN(ACTIVE) - ORIGIN(BOOT2);
+__bootloader_active_end = ORIGIN(ACTIVE) + LENGTH(ACTIVE) - ORIGIN(BOOT2);
+
+__bootloader_dfu_start = ORIGIN(DFU) - ORIGIN(BOOT2);
+__bootloader_dfu_end = ORIGIN(DFU) + LENGTH(DFU) - ORIGIN(BOOT2);
diff --git a/examples/boot/bootloader/rp/src/main.rs b/examples/boot/bootloader/rp/src/main.rs
new file mode 100644
index 000000000..6a81db804
--- /dev/null
+++ b/examples/boot/bootloader/rp/src/main.rs
@@ -0,0 +1,56 @@
+#![no_std]
+#![no_main]
+
+use core::cell::RefCell;
+
+use cortex_m_rt::{entry, exception};
+#[cfg(feature = "defmt")]
+use defmt_rtt as _;
+use embassy_boot_rp::*;
+use embassy_sync::blocking_mutex::Mutex;
+use embassy_time::Duration;
+
+const FLASH_SIZE: usize = 2 * 1024 * 1024;
+
+#[entry]
+fn main() -> ! {
+    let p = embassy_rp::init(Default::default());
+
+    // Uncomment this if you are debugging the bootloader with debugger/RTT attached,
+    // as it prevents a hard fault when accessing flash 'too early' after boot.
+    /*
+    for i in 0..10000000 {
+        cortex_m::asm::nop();
+    }
+    */
+
+    let flash = WatchdogFlash::<FLASH_SIZE>::start(p.FLASH, p.WATCHDOG, Duration::from_secs(8));
+    let flash = Mutex::new(RefCell::new(flash));
+
+    let config = BootLoaderConfig::from_linkerfile_blocking(&flash);
+    let active_offset = config.active.offset();
+    let mut bl: BootLoader<_, _, _> = BootLoader::new(config);
+
+    bl.prepare();
+
+    unsafe { bl.load(embassy_rp::flash::FLASH_BASE as u32 + active_offset) }
+}
+
+#[no_mangle]
+#[cfg_attr(target_os = "none", link_section = ".HardFault.user")]
+unsafe extern "C" fn HardFault() {
+    cortex_m::peripheral::SCB::sys_reset();
+}
+
+#[exception]
+unsafe fn DefaultHandler(_: i16) -> ! {
+    const SCB_ICSR: *const u32 = 0xE000_ED04 as *const u32;
+    let irqn = core::ptr::read_volatile(SCB_ICSR) as u8 as i16 - 16;
+
+    panic!("DefaultHandler #{:?}", irqn);
+}
+
+#[panic_handler]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    cortex_m::asm::udf();
+}
diff --git a/examples/boot/bootloader/stm32/Cargo.toml b/examples/boot/bootloader/stm32/Cargo.toml
index 491777103..6436f2fee 100644
--- a/examples/boot/bootloader/stm32/Cargo.toml
+++ b/examples/boot/bootloader/stm32/Cargo.toml
@@ -3,17 +3,19 @@ edition = "2021"
 name = "stm32-bootloader-example"
 version = "0.1.0"
 description = "Example bootloader for STM32 chips"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
 defmt = { version = "0.3", optional = true }
-defmt-rtt = { version = "0.3", optional = true }
+defmt-rtt = { version = "0.4", optional = true }
 
-embassy-stm32 = { path = "../../../../embassy-stm32", default-features = false, features = ["nightly"] }
-embassy-boot-stm32 = { path = "../../../../embassy-boot/stm32", default-features = false }
-cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
+embassy-stm32 = { path = "../../../../embassy-stm32", features = ["nightly"] }
+embassy-boot-stm32 = { path = "../../../../embassy-boot/stm32" }
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
+embassy-sync = { path = "../../../../embassy-sync" }
 cortex-m-rt = { version = "0.7" }
 embedded-storage = "0.3.0"
-embedded-storage-async = "0.3.0"
+embedded-storage-async = "0.4.0"
 cfg-if = "1.0.0"
 
 [features]
diff --git a/examples/boot/bootloader/stm32/src/main.rs b/examples/boot/bootloader/stm32/src/main.rs
index 45c511ced..262eed200 100644
--- a/examples/boot/bootloader/stm32/src/main.rs
+++ b/examples/boot/bootloader/stm32/src/main.rs
@@ -1,11 +1,14 @@
 #![no_std]
 #![no_main]
 
+use core::cell::RefCell;
+
 use cortex_m_rt::{entry, exception};
 #[cfg(feature = "defmt")]
 use defmt_rtt as _;
 use embassy_boot_stm32::*;
-use embassy_stm32::flash::{Flash, ERASE_SIZE};
+use embassy_stm32::flash::{Flash, BANK1_REGION};
+use embassy_sync::blocking_mutex::Mutex;
 
 #[entry]
 fn main() -> ! {
@@ -19,11 +22,16 @@ fn main() -> ! {
         }
     */
 
-    let mut bl: BootLoader<ERASE_SIZE> = BootLoader::default();
-    let mut flash = Flash::unlock(p.FLASH);
-    let start = bl.prepare(&mut SingleFlashProvider::new(&mut flash));
-    core::mem::drop(flash);
-    unsafe { bl.load(start) }
+    let layout = Flash::new_blocking(p.FLASH).into_blocking_regions();
+    let flash = Mutex::new(RefCell::new(layout.bank1_region));
+
+    let config = BootLoaderConfig::from_linkerfile_blocking(&flash);
+    let active_offset = config.active.offset();
+    let mut bl: BootLoader<_, _, _, 2048> = BootLoader::new(config);
+
+    bl.prepare();
+
+    unsafe { bl.load(BANK1_REGION.base + active_offset) }
 }
 
 #[no_mangle]