Merge #935
935: Remove generic const expressions from embassy-boot r=lulf a=lulf * Remove the need for generic const expressions and use buffers provided in the flash config. * Extend embedded-storage traits to simplify generics. * Document all public APIs * Add toplevel README * Expose AlignedBuffer type for convenience. * Update examples Co-authored-by: Ulf Lilleengen <lulf@redhat.com>
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30
embassy-boot/README.md
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30
embassy-boot/README.md
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@ -0,0 +1,30 @@
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# embassy-boot
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An [Embassy](https://embassy.dev) project.
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A lightweight bootloader supporting firmware updates in a power-fail-safe way, with trial boots and rollbacks.
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The bootloader can be used either as a library or be flashed directly with the default configuration derived from linker scripts.
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By design, the bootloader does not provide any network capabilities. Networking capabilities for fetching new firmware can be provided by the user application, using the bootloader as a library for updating the firmware, or by using the bootloader as a library and adding this capability yourself.
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## Hardware support
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The bootloader supports different hardware in separate crates:
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* `embassy-boot-nrf` - for the nRF microcontrollers.
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* `embassy-boot-stm32` - for the STM32 microcontrollers.
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## Minimum supported Rust version (MSRV)
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`embassy-boot` requires Rust nightly to compile as it relies on async traits for interacting with the flash peripherals.
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## License
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This work is licensed under either of
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- Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or
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<http://www.apache.org/licenses/LICENSE-2.0>)
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- MIT license ([LICENSE-MIT](LICENSE-MIT) or <http://opensource.org/licenses/MIT>)
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at your option.
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@ -1,53 +1,54 @@
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#![feature(type_alias_impl_trait)]
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#![feature(generic_associated_types)]
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#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
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#![no_std]
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///! embassy-boot is a bootloader and firmware updater for embedded devices with flash
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///! storage implemented using embedded-storage
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///!
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///! The bootloader works in conjunction with the firmware application, and only has the
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///! ability to manage two flash banks with an active and a updatable part. It implements
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///! a swap algorithm that is power-failure safe, and allows reverting to the previous
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///! version of the firmware, should the application crash and fail to mark itself as booted.
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///!
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///! This library is intended to be used by platform-specific bootloaders, such as embassy-boot-nrf,
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///! which defines the limits and flash type for that particular platform.
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///!
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#![warn(missing_docs)]
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#![doc = include_str!("../../README.md")]
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mod fmt;
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use embedded_storage::nor_flash::{NorFlash, NorFlashError, NorFlashErrorKind, ReadNorFlash};
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use embedded_storage::nor_flash::{ErrorType, NorFlash, NorFlashError, NorFlashErrorKind, ReadNorFlash};
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use embedded_storage_async::nor_flash::AsyncNorFlash;
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const BOOT_MAGIC: u8 = 0xD0;
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const SWAP_MAGIC: u8 = 0xF0;
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/// A region in flash used by the bootloader.
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#[derive(Copy, Clone, Debug)]
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#[cfg_attr(feature = "defmt", derive(defmt::Format))]
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pub struct Partition {
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/// Start of the flash region.
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pub from: usize,
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/// End of the flash region.
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pub to: usize,
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}
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impl Partition {
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/// Create a new partition with the provided range
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pub const fn new(from: usize, to: usize) -> Self {
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Self { from, to }
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}
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/// Return the length of the partition
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pub const fn len(&self) -> usize {
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self.to - self.from
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}
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}
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#[derive(PartialEq, Debug)]
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/// The state of the bootloader after running prepare.
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#[derive(PartialEq, Eq, Debug)]
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#[cfg_attr(feature = "defmt", derive(defmt::Format))]
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pub enum State {
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/// Bootloader is ready to boot the active partition.
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Boot,
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/// Bootloader has swapped the active partition with the dfu partition and will attempt boot.
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Swap,
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}
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#[derive(PartialEq, Debug)]
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/// Errors returned by bootloader
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#[derive(PartialEq, Eq, Debug)]
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pub enum BootError {
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/// Error from flash.
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Flash(NorFlashErrorKind),
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/// Invalid bootloader magic
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BadMagic,
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}
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@ -60,19 +61,39 @@ where
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}
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}
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pub trait FlashConfig {
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const BLOCK_SIZE: usize;
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const ERASE_VALUE: u8;
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type FLASH: NorFlash + ReadNorFlash;
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/// Buffer aligned to 32 byte boundary, largest known alignment requirement for embassy-boot.
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#[repr(align(32))]
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pub struct AlignedBuffer<const N: usize>(pub [u8; N]);
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fn flash(&mut self) -> &mut Self::FLASH;
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impl<const N: usize> AsRef<[u8]> for AlignedBuffer<N> {
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fn as_ref(&self) -> &[u8] {
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&self.0
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}
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}
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impl<const N: usize> AsMut<[u8]> for AlignedBuffer<N> {
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fn as_mut(&mut self) -> &mut [u8] {
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&mut self.0
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}
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}
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/// Extension of the embedded-storage flash type information with block size and erase value.
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pub trait Flash: NorFlash + ReadNorFlash {
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/// The block size that should be used when writing to flash. For most builtin flashes, this is the same as the erase
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/// size of the flash, but for external QSPI flash modules, this can be lower.
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const BLOCK_SIZE: usize;
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/// The erase value of the flash. Typically the default of 0xFF is used, but some flashes use a different value.
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const ERASE_VALUE: u8 = 0xFF;
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}
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/// Trait defining the flash handles used for active and DFU partition
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pub trait FlashProvider {
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type STATE: FlashConfig;
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type ACTIVE: FlashConfig;
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type DFU: FlashConfig;
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pub trait FlashConfig {
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/// Flash type used for the state partition.
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type STATE: Flash;
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/// Flash type used for the active partition.
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type ACTIVE: Flash;
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/// Flash type used for the dfu partition.
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type DFU: Flash;
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/// Return flash instance used to write/read to/from active partition.
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fn active(&mut self) -> &mut Self::ACTIVE;
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@ -84,9 +105,7 @@ pub trait FlashProvider {
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/// BootLoader works with any flash implementing embedded_storage and can also work with
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/// different page sizes and flash write sizes.
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///
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/// The PAGE_SIZE const parameter must be a multiple of the ACTIVE and DFU page sizes.
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pub struct BootLoader<const PAGE_SIZE: usize> {
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pub struct BootLoader {
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// Page with current state of bootloader. The state partition has the following format:
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// | Range | Description |
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// | 0 - WRITE_SIZE | Magic indicating bootloader state. BOOT_MAGIC means boot, SWAP_MAGIC means swap. |
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@ -98,15 +117,16 @@ pub struct BootLoader<const PAGE_SIZE: usize> {
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dfu: Partition,
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}
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impl<const PAGE_SIZE: usize> BootLoader<PAGE_SIZE> {
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impl BootLoader {
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/// Create a new instance of a bootloader with the given partitions.
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///
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/// - All partitions must be aligned with the PAGE_SIZE const generic parameter.
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/// - The dfu partition must be at least PAGE_SIZE bigger than the active partition.
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pub fn new(active: Partition, dfu: Partition, state: Partition) -> Self {
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assert_eq!(active.len() % PAGE_SIZE, 0);
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assert_eq!(dfu.len() % PAGE_SIZE, 0);
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// DFU partition must have an extra page
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assert!(dfu.len() - active.len() >= PAGE_SIZE);
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Self { active, dfu, state }
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}
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/// Return the boot address for the active partition.
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pub fn boot_address(&self) -> usize {
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self.active.from
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}
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@ -194,44 +214,43 @@ impl<const PAGE_SIZE: usize> BootLoader<PAGE_SIZE> {
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/// | DFU | 3 | 3 | 2 | 1 | 3 |
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/// +-----------+--------------+--------+--------+--------+--------+
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///
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pub fn prepare_boot<P: FlashProvider>(&mut self, p: &mut P) -> Result<State, BootError>
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where
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[(); <<P as FlashProvider>::STATE as FlashConfig>::FLASH::WRITE_SIZE]:,
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[(); <<P as FlashProvider>::ACTIVE as FlashConfig>::FLASH::ERASE_SIZE]:,
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{
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pub fn prepare_boot<P: FlashConfig>(
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&mut self,
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p: &mut P,
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magic: &mut [u8],
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page: &mut [u8],
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) -> Result<State, BootError> {
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// Ensure we have enough progress pages to store copy progress
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assert!(
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self.active.len() / PAGE_SIZE
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<= (self.state.len() - <<P as FlashProvider>::STATE as FlashConfig>::FLASH::WRITE_SIZE)
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/ <<P as FlashProvider>::STATE as FlashConfig>::FLASH::WRITE_SIZE
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);
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assert_eq!(self.active.len() % page.len(), 0);
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assert_eq!(self.dfu.len() % page.len(), 0);
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assert!(self.dfu.len() - self.active.len() >= page.len());
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assert!(self.active.len() / page.len() <= (self.state.len() - P::STATE::WRITE_SIZE) / P::STATE::WRITE_SIZE);
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assert_eq!(magic.len(), P::STATE::WRITE_SIZE);
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// Copy contents from partition N to active
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let state = self.read_state(p.state())?;
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let state = self.read_state(p, magic)?;
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match state {
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State::Swap => {
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//
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// Check if we already swapped. If we're in the swap state, this means we should revert
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// since the app has failed to mark boot as successful
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//
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if !self.is_swapped(p.state())? {
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if !self.is_swapped(p, magic, page)? {
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trace!("Swapping");
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self.swap(p)?;
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self.swap(p, magic, page)?;
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trace!("Swapping done");
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} else {
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trace!("Reverting");
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self.revert(p)?;
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self.revert(p, magic, page)?;
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// Overwrite magic and reset progress
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let fstate = p.state().flash();
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let aligned = Aligned(
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[!P::STATE::ERASE_VALUE; <<P as FlashProvider>::STATE as FlashConfig>::FLASH::WRITE_SIZE],
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);
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fstate.write(self.state.from as u32, &aligned.0)?;
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let fstate = p.state();
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magic.fill(!P::STATE::ERASE_VALUE);
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fstate.write(self.state.from as u32, magic)?;
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fstate.erase(self.state.from as u32, self.state.to as u32)?;
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let aligned =
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Aligned([BOOT_MAGIC; <<P as FlashProvider>::STATE as FlashConfig>::FLASH::WRITE_SIZE]);
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fstate.write(self.state.from as u32, &aligned.0)?;
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magic.fill(BOOT_MAGIC);
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fstate.write(self.state.from as u32, magic)?;
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}
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}
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_ => {}
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@ -239,166 +258,152 @@ impl<const PAGE_SIZE: usize> BootLoader<PAGE_SIZE> {
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Ok(state)
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}
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fn is_swapped<P: FlashConfig>(&mut self, p: &mut P) -> Result<bool, BootError>
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where
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[(); P::FLASH::WRITE_SIZE]:,
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{
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let page_count = self.active.len() / P::FLASH::ERASE_SIZE;
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let progress = self.current_progress(p)?;
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fn is_swapped<P: FlashConfig>(&mut self, p: &mut P, magic: &mut [u8], page: &mut [u8]) -> Result<bool, BootError> {
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let page_size = page.len();
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let page_count = self.active.len() / page_size;
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let progress = self.current_progress(p, magic)?;
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Ok(progress >= page_count * 2)
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}
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fn current_progress<P: FlashConfig>(&mut self, p: &mut P) -> Result<usize, BootError>
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where
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[(); P::FLASH::WRITE_SIZE]:,
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{
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let write_size = P::FLASH::WRITE_SIZE;
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fn current_progress<P: FlashConfig>(&mut self, config: &mut P, aligned: &mut [u8]) -> Result<usize, BootError> {
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let write_size = aligned.len();
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let max_index = ((self.state.len() - write_size) / write_size) - 1;
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let flash = p.flash();
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let mut aligned = Aligned([!P::ERASE_VALUE; P::FLASH::WRITE_SIZE]);
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aligned.fill(!P::STATE::ERASE_VALUE);
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let flash = config.state();
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for i in 0..max_index {
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flash.read((self.state.from + write_size + i * write_size) as u32, &mut aligned.0)?;
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if aligned.0 == [P::ERASE_VALUE; P::FLASH::WRITE_SIZE] {
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flash.read((self.state.from + write_size + i * write_size) as u32, aligned)?;
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if aligned.iter().any(|&b| b == P::STATE::ERASE_VALUE) {
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return Ok(i);
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}
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}
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Ok(max_index)
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}
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fn update_progress<P: FlashConfig>(&mut self, idx: usize, p: &mut P) -> Result<(), BootError>
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where
|
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[(); P::FLASH::WRITE_SIZE]:,
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{
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let flash = p.flash();
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let write_size = P::FLASH::WRITE_SIZE;
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fn update_progress<P: FlashConfig>(&mut self, idx: usize, p: &mut P, magic: &mut [u8]) -> Result<(), BootError> {
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let flash = p.state();
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let write_size = magic.len();
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let w = self.state.from + write_size + idx * write_size;
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let aligned = Aligned([!P::ERASE_VALUE; P::FLASH::WRITE_SIZE]);
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flash.write(w as u32, &aligned.0)?;
|
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|
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let aligned = magic;
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aligned.fill(!P::STATE::ERASE_VALUE);
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flash.write(w as u32, aligned)?;
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Ok(())
|
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}
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fn active_addr(&self, n: usize) -> usize {
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self.active.from + n * PAGE_SIZE
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fn active_addr(&self, n: usize, page_size: usize) -> usize {
|
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self.active.from + n * page_size
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}
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|
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fn dfu_addr(&self, n: usize) -> usize {
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self.dfu.from + n * PAGE_SIZE
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fn dfu_addr(&self, n: usize, page_size: usize) -> usize {
|
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self.dfu.from + n * page_size
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}
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|
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fn copy_page_once_to_active<P: FlashProvider>(
|
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fn copy_page_once_to_active<P: FlashConfig>(
|
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&mut self,
|
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idx: usize,
|
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from_page: usize,
|
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to_page: usize,
|
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p: &mut P,
|
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) -> Result<(), BootError>
|
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where
|
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[(); <<P as FlashProvider>::STATE as FlashConfig>::FLASH::WRITE_SIZE]:,
|
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{
|
||||
let mut buf: [u8; PAGE_SIZE] = [0; PAGE_SIZE];
|
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if self.current_progress(p.state())? <= idx {
|
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magic: &mut [u8],
|
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page: &mut [u8],
|
||||
) -> Result<(), BootError> {
|
||||
let buf = page;
|
||||
if self.current_progress(p, magic)? <= idx {
|
||||
let mut offset = from_page;
|
||||
for chunk in buf.chunks_mut(P::DFU::BLOCK_SIZE) {
|
||||
p.dfu().flash().read(offset as u32, chunk)?;
|
||||
p.dfu().read(offset as u32, chunk)?;
|
||||
offset += chunk.len();
|
||||
}
|
||||
|
||||
p.active().flash().erase(to_page as u32, (to_page + PAGE_SIZE) as u32)?;
|
||||
p.active().erase(to_page as u32, (to_page + buf.len()) as u32)?;
|
||||
|
||||
let mut offset = to_page;
|
||||
for chunk in buf.chunks(P::ACTIVE::BLOCK_SIZE) {
|
||||
p.active().flash().write(offset as u32, &chunk)?;
|
||||
p.active().write(offset as u32, chunk)?;
|
||||
offset += chunk.len();
|
||||
}
|
||||
self.update_progress(idx, p.state())?;
|
||||
self.update_progress(idx, p, magic)?;
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn copy_page_once_to_dfu<P: FlashProvider>(
|
||||
fn copy_page_once_to_dfu<P: FlashConfig>(
|
||||
&mut self,
|
||||
idx: usize,
|
||||
from_page: usize,
|
||||
to_page: usize,
|
||||
p: &mut P,
|
||||
) -> Result<(), BootError>
|
||||
where
|
||||
[(); <<P as FlashProvider>::STATE as FlashConfig>::FLASH::WRITE_SIZE]:,
|
||||
{
|
||||
let mut buf: [u8; PAGE_SIZE] = [0; PAGE_SIZE];
|
||||
if self.current_progress(p.state())? <= idx {
|
||||
magic: &mut [u8],
|
||||
page: &mut [u8],
|
||||
) -> Result<(), BootError> {
|
||||
let buf = page;
|
||||
if self.current_progress(p, magic)? <= idx {
|
||||
let mut offset = from_page;
|
||||
for chunk in buf.chunks_mut(P::ACTIVE::BLOCK_SIZE) {
|
||||
p.active().flash().read(offset as u32, chunk)?;
|
||||
p.active().read(offset as u32, chunk)?;
|
||||
offset += chunk.len();
|
||||
}
|
||||
|
||||
p.dfu().flash().erase(to_page as u32, (to_page + PAGE_SIZE) as u32)?;
|
||||
p.dfu().erase(to_page as u32, (to_page + buf.len()) as u32)?;
|
||||
|
||||
let mut offset = to_page;
|
||||
for chunk in buf.chunks(P::DFU::BLOCK_SIZE) {
|
||||
p.dfu().flash().write(offset as u32, chunk)?;
|
||||
p.dfu().write(offset as u32, chunk)?;
|
||||
offset += chunk.len();
|
||||
}
|
||||
self.update_progress(idx, p.state())?;
|
||||
self.update_progress(idx, p, magic)?;
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn swap<P: FlashProvider>(&mut self, p: &mut P) -> Result<(), BootError>
|
||||
where
|
||||
[(); <<P as FlashProvider>::STATE as FlashConfig>::FLASH::WRITE_SIZE]:,
|
||||
{
|
||||
let page_count = self.active.len() / PAGE_SIZE;
|
||||
fn swap<P: FlashConfig>(&mut self, p: &mut P, magic: &mut [u8], page: &mut [u8]) -> Result<(), BootError> {
|
||||
let page_size = page.len();
|
||||
let page_count = self.active.len() / page_size;
|
||||
trace!("Page count: {}", page_count);
|
||||
for page in 0..page_count {
|
||||
trace!("COPY PAGE {}", page);
|
||||
for page_num in 0..page_count {
|
||||
trace!("COPY PAGE {}", page_num);
|
||||
// Copy active page to the 'next' DFU page.
|
||||
let active_page = self.active_addr(page_count - 1 - page);
|
||||
let dfu_page = self.dfu_addr(page_count - page);
|
||||
let active_page = self.active_addr(page_count - 1 - page_num, page_size);
|
||||
let dfu_page = self.dfu_addr(page_count - page_num, page_size);
|
||||
//trace!("Copy active {} to dfu {}", active_page, dfu_page);
|
||||
self.copy_page_once_to_dfu(page * 2, active_page, dfu_page, p)?;
|
||||
self.copy_page_once_to_dfu(page_num * 2, active_page, dfu_page, p, magic, page)?;
|
||||
|
||||
// Copy DFU page to the active page
|
||||
let active_page = self.active_addr(page_count - 1 - page);
|
||||
let dfu_page = self.dfu_addr(page_count - 1 - page);
|
||||
let active_page = self.active_addr(page_count - 1 - page_num, page_size);
|
||||
let dfu_page = self.dfu_addr(page_count - 1 - page_num, page_size);
|
||||
//trace!("Copy dfy {} to active {}", dfu_page, active_page);
|
||||
self.copy_page_once_to_active(page * 2 + 1, dfu_page, active_page, p)?;
|
||||
self.copy_page_once_to_active(page_num * 2 + 1, dfu_page, active_page, p, magic, page)?;
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn revert<P: FlashProvider>(&mut self, p: &mut P) -> Result<(), BootError>
|
||||
where
|
||||
[(); <<P as FlashProvider>::STATE as FlashConfig>::FLASH::WRITE_SIZE]:,
|
||||
{
|
||||
let page_count = self.active.len() / PAGE_SIZE;
|
||||
for page in 0..page_count {
|
||||
fn revert<P: FlashConfig>(&mut self, p: &mut P, magic: &mut [u8], page: &mut [u8]) -> Result<(), BootError> {
|
||||
let page_size = page.len();
|
||||
let page_count = self.active.len() / page_size;
|
||||
for page_num in 0..page_count {
|
||||
// Copy the bad active page to the DFU page
|
||||
let active_page = self.active_addr(page);
|
||||
let dfu_page = self.dfu_addr(page);
|
||||
self.copy_page_once_to_dfu(page_count * 2 + page * 2, active_page, dfu_page, p)?;
|
||||
let active_page = self.active_addr(page_num, page_size);
|
||||
let dfu_page = self.dfu_addr(page_num, page_size);
|
||||
self.copy_page_once_to_dfu(page_count * 2 + page_num * 2, active_page, dfu_page, p, magic, page)?;
|
||||
|
||||
// Copy the DFU page back to the active page
|
||||
let active_page = self.active_addr(page);
|
||||
let dfu_page = self.dfu_addr(page + 1);
|
||||
self.copy_page_once_to_active(page_count * 2 + page * 2 + 1, dfu_page, active_page, p)?;
|
||||
let active_page = self.active_addr(page_num, page_size);
|
||||
let dfu_page = self.dfu_addr(page_num + 1, page_size);
|
||||
self.copy_page_once_to_active(page_count * 2 + page_num * 2 + 1, dfu_page, active_page, p, magic, page)?;
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn read_state<P: FlashConfig>(&mut self, p: &mut P) -> Result<State, BootError>
|
||||
where
|
||||
[(); P::FLASH::WRITE_SIZE]:,
|
||||
{
|
||||
let mut magic: [u8; P::FLASH::WRITE_SIZE] = [0; P::FLASH::WRITE_SIZE];
|
||||
let flash = p.flash();
|
||||
flash.read(self.state.from as u32, &mut magic)?;
|
||||
fn read_state<P: FlashConfig>(&mut self, config: &mut P, magic: &mut [u8]) -> Result<State, BootError> {
|
||||
let flash = config.state();
|
||||
flash.read(self.state.from as u32, magic)?;
|
||||
|
||||
if magic == [SWAP_MAGIC; P::FLASH::WRITE_SIZE] {
|
||||
if !magic.iter().any(|&b| b != SWAP_MAGIC) {
|
||||
Ok(State::Swap)
|
||||
} else {
|
||||
Ok(State::Boot)
|
||||
@ -406,108 +411,149 @@ impl<const PAGE_SIZE: usize> BootLoader<PAGE_SIZE> {
|
||||
}
|
||||
}
|
||||
|
||||
/// Convenience provider that uses a single flash for everything
|
||||
pub struct SingleFlashProvider<'a, F, const ERASE_VALUE: u8 = 0xFF>
|
||||
/// Convenience provider that uses a single flash for all partitions.
|
||||
pub struct SingleFlashConfig<'a, F>
|
||||
where
|
||||
F: NorFlash + ReadNorFlash,
|
||||
F: Flash,
|
||||
{
|
||||
config: SingleFlashConfig<'a, F, ERASE_VALUE>,
|
||||
flash: &'a mut F,
|
||||
}
|
||||
|
||||
impl<'a, F, const ERASE_VALUE: u8> SingleFlashProvider<'a, F, ERASE_VALUE>
|
||||
impl<'a, F> SingleFlashConfig<'a, F>
|
||||
where
|
||||
F: NorFlash + ReadNorFlash,
|
||||
F: Flash,
|
||||
{
|
||||
/// Create a provider for a single flash.
|
||||
pub fn new(flash: &'a mut F) -> Self {
|
||||
Self {
|
||||
config: SingleFlashConfig { flash },
|
||||
}
|
||||
Self { flash }
|
||||
}
|
||||
}
|
||||
|
||||
pub struct SingleFlashConfig<'a, F, const ERASE_VALUE: u8 = 0xFF>
|
||||
impl<'a, F> FlashConfig for SingleFlashConfig<'a, F>
|
||||
where
|
||||
F: Flash,
|
||||
{
|
||||
type STATE = F;
|
||||
type ACTIVE = F;
|
||||
type DFU = F;
|
||||
|
||||
fn active(&mut self) -> &mut Self::STATE {
|
||||
self.flash
|
||||
}
|
||||
fn dfu(&mut self) -> &mut Self::ACTIVE {
|
||||
self.flash
|
||||
}
|
||||
fn state(&mut self) -> &mut Self::DFU {
|
||||
self.flash
|
||||
}
|
||||
}
|
||||
|
||||
/// A flash wrapper implementing the Flash and embedded_storage traits.
|
||||
pub struct BootFlash<'a, F, const BLOCK_SIZE: usize, const ERASE_VALUE: u8 = 0xFF>
|
||||
where
|
||||
F: NorFlash + ReadNorFlash,
|
||||
{
|
||||
flash: &'a mut F,
|
||||
}
|
||||
|
||||
impl<'a, F> FlashProvider for SingleFlashProvider<'a, F>
|
||||
impl<'a, F, const BLOCK_SIZE: usize, const ERASE_VALUE: u8> BootFlash<'a, F, BLOCK_SIZE, ERASE_VALUE>
|
||||
where
|
||||
F: NorFlash + ReadNorFlash,
|
||||
{
|
||||
type STATE = SingleFlashConfig<'a, F>;
|
||||
type ACTIVE = SingleFlashConfig<'a, F>;
|
||||
type DFU = SingleFlashConfig<'a, F>;
|
||||
|
||||
fn active(&mut self) -> &mut Self::STATE {
|
||||
&mut self.config
|
||||
}
|
||||
fn dfu(&mut self) -> &mut Self::ACTIVE {
|
||||
&mut self.config
|
||||
}
|
||||
fn state(&mut self) -> &mut Self::DFU {
|
||||
&mut self.config
|
||||
/// Create a new instance of a bootable flash
|
||||
pub fn new(flash: &'a mut F) -> Self {
|
||||
Self { flash }
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, F, const ERASE_VALUE: u8> FlashConfig for SingleFlashConfig<'a, F, ERASE_VALUE>
|
||||
impl<'a, F, const BLOCK_SIZE: usize, const ERASE_VALUE: u8> Flash for BootFlash<'a, F, BLOCK_SIZE, ERASE_VALUE>
|
||||
where
|
||||
F: NorFlash + ReadNorFlash,
|
||||
{
|
||||
const BLOCK_SIZE: usize = F::ERASE_SIZE;
|
||||
const BLOCK_SIZE: usize = BLOCK_SIZE;
|
||||
const ERASE_VALUE: u8 = ERASE_VALUE;
|
||||
type FLASH = F;
|
||||
fn flash(&mut self) -> &mut F {
|
||||
self.flash
|
||||
}
|
||||
|
||||
impl<'a, F, const BLOCK_SIZE: usize, const ERASE_VALUE: u8> ErrorType for BootFlash<'a, F, BLOCK_SIZE, ERASE_VALUE>
|
||||
where
|
||||
F: ReadNorFlash + NorFlash,
|
||||
{
|
||||
type Error = F::Error;
|
||||
}
|
||||
|
||||
impl<'a, F, const BLOCK_SIZE: usize, const ERASE_VALUE: u8> NorFlash for BootFlash<'a, F, BLOCK_SIZE, ERASE_VALUE>
|
||||
where
|
||||
F: ReadNorFlash + NorFlash,
|
||||
{
|
||||
const WRITE_SIZE: usize = F::WRITE_SIZE;
|
||||
const ERASE_SIZE: usize = F::ERASE_SIZE;
|
||||
|
||||
fn erase(&mut self, from: u32, to: u32) -> Result<(), Self::Error> {
|
||||
F::erase(self.flash, from, to)
|
||||
}
|
||||
|
||||
fn write(&mut self, offset: u32, bytes: &[u8]) -> Result<(), Self::Error> {
|
||||
F::write(self.flash, offset, bytes)
|
||||
}
|
||||
}
|
||||
|
||||
/// Convenience provider that uses a single flash for everything
|
||||
pub struct MultiFlashProvider<'a, ACTIVE, STATE, DFU>
|
||||
impl<'a, F, const BLOCK_SIZE: usize, const ERASE_VALUE: u8> ReadNorFlash for BootFlash<'a, F, BLOCK_SIZE, ERASE_VALUE>
|
||||
where
|
||||
ACTIVE: NorFlash + ReadNorFlash,
|
||||
STATE: NorFlash + ReadNorFlash,
|
||||
DFU: NorFlash + ReadNorFlash,
|
||||
F: ReadNorFlash + NorFlash,
|
||||
{
|
||||
active: SingleFlashConfig<'a, ACTIVE>,
|
||||
state: SingleFlashConfig<'a, STATE>,
|
||||
dfu: SingleFlashConfig<'a, DFU>,
|
||||
const READ_SIZE: usize = F::READ_SIZE;
|
||||
|
||||
fn read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Self::Error> {
|
||||
F::read(self.flash, offset, bytes)
|
||||
}
|
||||
|
||||
fn capacity(&self) -> usize {
|
||||
F::capacity(self.flash)
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, ACTIVE, STATE, DFU> MultiFlashProvider<'a, ACTIVE, STATE, DFU>
|
||||
/// Convenience flash provider that uses separate flash instances for each partition.
|
||||
pub struct MultiFlashConfig<'a, ACTIVE, STATE, DFU>
|
||||
where
|
||||
ACTIVE: NorFlash + ReadNorFlash,
|
||||
STATE: NorFlash + ReadNorFlash,
|
||||
DFU: NorFlash + ReadNorFlash,
|
||||
ACTIVE: Flash,
|
||||
STATE: Flash,
|
||||
DFU: Flash,
|
||||
{
|
||||
active: &'a mut ACTIVE,
|
||||
state: &'a mut STATE,
|
||||
dfu: &'a mut DFU,
|
||||
}
|
||||
|
||||
impl<'a, ACTIVE, STATE, DFU> MultiFlashConfig<'a, ACTIVE, STATE, DFU>
|
||||
where
|
||||
ACTIVE: Flash,
|
||||
STATE: Flash,
|
||||
DFU: Flash,
|
||||
{
|
||||
/// Create a new flash provider with separate configuration for all three partitions.
|
||||
pub fn new(active: &'a mut ACTIVE, state: &'a mut STATE, dfu: &'a mut DFU) -> Self {
|
||||
Self {
|
||||
active: SingleFlashConfig { flash: active },
|
||||
state: SingleFlashConfig { flash: state },
|
||||
dfu: SingleFlashConfig { flash: dfu },
|
||||
}
|
||||
Self { active, state, dfu }
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, ACTIVE, STATE, DFU> FlashProvider for MultiFlashProvider<'a, ACTIVE, STATE, DFU>
|
||||
impl<'a, ACTIVE, STATE, DFU> FlashConfig for MultiFlashConfig<'a, ACTIVE, STATE, DFU>
|
||||
where
|
||||
ACTIVE: NorFlash + ReadNorFlash,
|
||||
STATE: NorFlash + ReadNorFlash,
|
||||
DFU: NorFlash + ReadNorFlash,
|
||||
ACTIVE: Flash,
|
||||
STATE: Flash,
|
||||
DFU: Flash,
|
||||
{
|
||||
type STATE = SingleFlashConfig<'a, STATE>;
|
||||
type ACTIVE = SingleFlashConfig<'a, ACTIVE>;
|
||||
type DFU = SingleFlashConfig<'a, DFU>;
|
||||
type STATE = STATE;
|
||||
type ACTIVE = ACTIVE;
|
||||
type DFU = DFU;
|
||||
|
||||
fn active(&mut self) -> &mut Self::ACTIVE {
|
||||
&mut self.active
|
||||
self.active
|
||||
}
|
||||
fn dfu(&mut self) -> &mut Self::DFU {
|
||||
&mut self.dfu
|
||||
self.dfu
|
||||
}
|
||||
fn state(&mut self) -> &mut Self::STATE {
|
||||
&mut self.state
|
||||
self.state
|
||||
}
|
||||
}
|
||||
|
||||
@ -518,10 +564,6 @@ pub struct FirmwareUpdater {
|
||||
dfu: Partition,
|
||||
}
|
||||
|
||||
// NOTE: Aligned to the largest write size supported by flash
|
||||
#[repr(align(32))]
|
||||
pub struct Aligned<const N: usize>([u8; N]);
|
||||
|
||||
impl Default for FirmwareUpdater {
|
||||
fn default() -> Self {
|
||||
extern "C" {
|
||||
@ -551,6 +593,7 @@ impl Default for FirmwareUpdater {
|
||||
}
|
||||
|
||||
impl FirmwareUpdater {
|
||||
/// Create a firmware updater instance with partition ranges for the update and state partitions.
|
||||
pub const fn new(dfu: Partition, state: Partition) -> Self {
|
||||
Self { dfu, state }
|
||||
}
|
||||
@ -560,23 +603,24 @@ impl FirmwareUpdater {
|
||||
self.dfu.len()
|
||||
}
|
||||
|
||||
/// Instruct bootloader that DFU should commence at next boot.
|
||||
/// Must be provided with an aligned buffer to use for reading and writing magic;
|
||||
pub async fn update<F: AsyncNorFlash>(&mut self, flash: &mut F) -> Result<(), F::Error>
|
||||
where
|
||||
[(); F::WRITE_SIZE]:,
|
||||
{
|
||||
let mut aligned = Aligned([0; { F::WRITE_SIZE }]);
|
||||
self.set_magic(&mut aligned.0, SWAP_MAGIC, flash).await
|
||||
/// Mark to trigger firmware swap on next boot.
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The `aligned` buffer must have a size of F::WRITE_SIZE, and follow the alignment rules for the flash being written to.
|
||||
pub async fn mark_updated<F: AsyncNorFlash>(&mut self, flash: &mut F, aligned: &mut [u8]) -> Result<(), F::Error> {
|
||||
assert_eq!(aligned.len(), F::WRITE_SIZE);
|
||||
self.set_magic(aligned, SWAP_MAGIC, flash).await
|
||||
}
|
||||
|
||||
/// Mark firmware boot successfully
|
||||
pub async fn mark_booted<F: AsyncNorFlash>(&mut self, flash: &mut F) -> Result<(), F::Error>
|
||||
where
|
||||
[(); F::WRITE_SIZE]:,
|
||||
{
|
||||
let mut aligned = Aligned([0; { F::WRITE_SIZE }]);
|
||||
self.set_magic(&mut aligned.0, BOOT_MAGIC, flash).await
|
||||
/// Mark firmware boot successful and stop rollback on reset.
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// The `aligned` buffer must have a size of F::WRITE_SIZE, and follow the alignment rules for the flash being written to.
|
||||
pub async fn mark_booted<F: AsyncNorFlash>(&mut self, flash: &mut F, aligned: &mut [u8]) -> Result<(), F::Error> {
|
||||
assert_eq!(aligned.len(), F::WRITE_SIZE);
|
||||
self.set_magic(aligned, BOOT_MAGIC, flash).await
|
||||
}
|
||||
|
||||
async fn set_magic<F: AsyncNorFlash>(
|
||||
@ -587,7 +631,7 @@ impl FirmwareUpdater {
|
||||
) -> Result<(), F::Error> {
|
||||
flash.read(self.state.from as u32, aligned).await?;
|
||||
|
||||
if aligned.iter().find(|&&b| b != magic).is_some() {
|
||||
if aligned.iter().any(|&b| b != magic) {
|
||||
aligned.fill(0);
|
||||
|
||||
flash.write(self.state.from as u32, aligned).await?;
|
||||
@ -599,7 +643,13 @@ impl FirmwareUpdater {
|
||||
Ok(())
|
||||
}
|
||||
|
||||
// Write to a region of the DFU page
|
||||
/// Write data to a flash page.
|
||||
///
|
||||
/// The buffer must follow alignment requirements of the target flash and a multiple of page size big.
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// Failing to meet alignment and size requirements may result in a panic.
|
||||
pub async fn write_firmware<F: AsyncNorFlash>(
|
||||
&mut self,
|
||||
offset: usize,
|
||||
@ -668,7 +718,7 @@ mod tests {
|
||||
#[test]
|
||||
fn test_bad_magic() {
|
||||
let mut flash = MemFlash([0xff; 131072]);
|
||||
let mut flash = SingleFlashProvider::new(&mut flash);
|
||||
let mut flash = SingleFlashConfig::new(&mut flash);
|
||||
|
||||
let mut bootloader = BootLoader::<4096>::new(ACTIVE, DFU, STATE);
|
||||
|
||||
@ -687,11 +737,16 @@ mod tests {
|
||||
|
||||
let mut flash = MemFlash::<131072, 4096, 4>([0xff; 131072]);
|
||||
flash.0[0..4].copy_from_slice(&[BOOT_MAGIC; 4]);
|
||||
let mut flash = SingleFlashProvider::new(&mut flash);
|
||||
let mut flash = SingleFlashConfig::new(&mut flash);
|
||||
|
||||
let mut bootloader: BootLoader<4096> = BootLoader::new(ACTIVE, DFU, STATE);
|
||||
let mut bootloader: BootLoader = BootLoader::new(ACTIVE, DFU, STATE);
|
||||
|
||||
assert_eq!(State::Boot, bootloader.prepare_boot(&mut flash).unwrap());
|
||||
let mut magic = [0; 4];
|
||||
let mut page = [0; 4096];
|
||||
assert_eq!(
|
||||
State::Boot,
|
||||
bootloader.prepare_boot(&mut flash, &mut magic, &mut page).unwrap()
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
@ -703,24 +758,27 @@ mod tests {
|
||||
|
||||
let original: [u8; ACTIVE.len()] = [rand::random::<u8>(); ACTIVE.len()];
|
||||
let update: [u8; DFU.len()] = [rand::random::<u8>(); DFU.len()];
|
||||
let mut aligned = [0; 4];
|
||||
|
||||
for i in ACTIVE.from..ACTIVE.to {
|
||||
flash.0[i] = original[i - ACTIVE.from];
|
||||
}
|
||||
|
||||
let mut bootloader: BootLoader<4096> = BootLoader::new(ACTIVE, DFU, STATE);
|
||||
let mut bootloader: BootLoader = BootLoader::new(ACTIVE, DFU, STATE);
|
||||
let mut updater = FirmwareUpdater::new(DFU, STATE);
|
||||
let mut offset = 0;
|
||||
for chunk in update.chunks(4096) {
|
||||
block_on(updater.write_firmware(offset, &chunk, &mut flash, 4096)).unwrap();
|
||||
block_on(updater.write_firmware(offset, chunk, &mut flash, 4096)).unwrap();
|
||||
offset += chunk.len();
|
||||
}
|
||||
block_on(updater.update(&mut flash)).unwrap();
|
||||
block_on(updater.mark_updated(&mut flash, &mut aligned)).unwrap();
|
||||
|
||||
let mut magic = [0; 4];
|
||||
let mut page = [0; 4096];
|
||||
assert_eq!(
|
||||
State::Swap,
|
||||
bootloader
|
||||
.prepare_boot(&mut SingleFlashProvider::new(&mut flash))
|
||||
.prepare_boot(&mut SingleFlashConfig::new(&mut flash), &mut magic, &mut page)
|
||||
.unwrap()
|
||||
);
|
||||
|
||||
@ -737,7 +795,7 @@ mod tests {
|
||||
assert_eq!(
|
||||
State::Swap,
|
||||
bootloader
|
||||
.prepare_boot(&mut SingleFlashProvider::new(&mut flash))
|
||||
.prepare_boot(&mut SingleFlashConfig::new(&mut flash), &mut magic, &mut page)
|
||||
.unwrap()
|
||||
);
|
||||
|
||||
@ -751,11 +809,11 @@ mod tests {
|
||||
}
|
||||
|
||||
// Mark as booted
|
||||
block_on(updater.mark_booted(&mut flash)).unwrap();
|
||||
block_on(updater.mark_booted(&mut flash, &mut aligned)).unwrap();
|
||||
assert_eq!(
|
||||
State::Boot,
|
||||
bootloader
|
||||
.prepare_boot(&mut SingleFlashProvider::new(&mut flash))
|
||||
.prepare_boot(&mut SingleFlashConfig::new(&mut flash), &mut magic, &mut page)
|
||||
.unwrap()
|
||||
);
|
||||
}
|
||||
@ -769,6 +827,7 @@ mod tests {
|
||||
let mut active = MemFlash::<16384, 4096, 8>([0xff; 16384]);
|
||||
let mut dfu = MemFlash::<16384, 2048, 8>([0xff; 16384]);
|
||||
let mut state = MemFlash::<4096, 128, 4>([0xff; 4096]);
|
||||
let mut aligned = [0; 4];
|
||||
|
||||
let original: [u8; ACTIVE.len()] = [rand::random::<u8>(); ACTIVE.len()];
|
||||
let update: [u8; DFU.len()] = [rand::random::<u8>(); DFU.len()];
|
||||
@ -781,16 +840,23 @@ mod tests {
|
||||
|
||||
let mut offset = 0;
|
||||
for chunk in update.chunks(2048) {
|
||||
block_on(updater.write_firmware(offset, &chunk, &mut dfu, chunk.len())).unwrap();
|
||||
block_on(updater.write_firmware(offset, chunk, &mut dfu, chunk.len())).unwrap();
|
||||
offset += chunk.len();
|
||||
}
|
||||
block_on(updater.update(&mut state)).unwrap();
|
||||
block_on(updater.mark_updated(&mut state, &mut aligned)).unwrap();
|
||||
|
||||
let mut bootloader: BootLoader = BootLoader::new(ACTIVE, DFU, STATE);
|
||||
let mut magic = [0; 4];
|
||||
let mut page = [0; 4096];
|
||||
|
||||
let mut bootloader: BootLoader<4096> = BootLoader::new(ACTIVE, DFU, STATE);
|
||||
assert_eq!(
|
||||
State::Swap,
|
||||
bootloader
|
||||
.prepare_boot(&mut MultiFlashProvider::new(&mut active, &mut state, &mut dfu,))
|
||||
.prepare_boot(
|
||||
&mut MultiFlashConfig::new(&mut active, &mut state, &mut dfu),
|
||||
&mut magic,
|
||||
&mut page
|
||||
)
|
||||
.unwrap()
|
||||
);
|
||||
|
||||
@ -810,6 +876,7 @@ mod tests {
|
||||
const ACTIVE: Partition = Partition::new(4096, 16384);
|
||||
const DFU: Partition = Partition::new(0, 16384);
|
||||
|
||||
let mut aligned = [0; 4];
|
||||
let mut active = MemFlash::<16384, 2048, 4>([0xff; 16384]);
|
||||
let mut dfu = MemFlash::<16384, 4096, 8>([0xff; 16384]);
|
||||
let mut state = MemFlash::<4096, 128, 4>([0xff; 4096]);
|
||||
@ -825,16 +892,22 @@ mod tests {
|
||||
|
||||
let mut offset = 0;
|
||||
for chunk in update.chunks(4096) {
|
||||
block_on(updater.write_firmware(offset, &chunk, &mut dfu, chunk.len())).unwrap();
|
||||
block_on(updater.write_firmware(offset, chunk, &mut dfu, chunk.len())).unwrap();
|
||||
offset += chunk.len();
|
||||
}
|
||||
block_on(updater.update(&mut state)).unwrap();
|
||||
block_on(updater.mark_updated(&mut state, &mut aligned)).unwrap();
|
||||
|
||||
let mut bootloader: BootLoader<4096> = BootLoader::new(ACTIVE, DFU, STATE);
|
||||
let mut bootloader: BootLoader = BootLoader::new(ACTIVE, DFU, STATE);
|
||||
let mut magic = [0; 4];
|
||||
let mut page = [0; 4096];
|
||||
assert_eq!(
|
||||
State::Swap,
|
||||
bootloader
|
||||
.prepare_boot(&mut MultiFlashProvider::new(&mut active, &mut state, &mut dfu,))
|
||||
.prepare_boot(
|
||||
&mut MultiFlashConfig::new(&mut active, &mut state, &mut dfu,),
|
||||
&mut magic,
|
||||
&mut page
|
||||
)
|
||||
.unwrap()
|
||||
);
|
||||
|
||||
@ -899,6 +972,13 @@ mod tests {
|
||||
}
|
||||
}
|
||||
|
||||
impl<const SIZE: usize, const ERASE_SIZE: usize, const WRITE_SIZE: usize> super::Flash
|
||||
for MemFlash<SIZE, ERASE_SIZE, WRITE_SIZE>
|
||||
{
|
||||
const BLOCK_SIZE: usize = ERASE_SIZE;
|
||||
const ERASE_VALUE: u8 = 0xFF;
|
||||
}
|
||||
|
||||
impl<const SIZE: usize, const ERASE_SIZE: usize, const WRITE_SIZE: usize> AsyncReadNorFlash
|
||||
for MemFlash<SIZE, ERASE_SIZE, WRITE_SIZE>
|
||||
{
|
||||
|
||||
@ -1,19 +1,21 @@
|
||||
#![no_std]
|
||||
#![feature(generic_associated_types)]
|
||||
#![feature(type_alias_impl_trait)]
|
||||
#![allow(incomplete_features)]
|
||||
#![feature(generic_const_exprs)]
|
||||
|
||||
#![warn(missing_docs)]
|
||||
#![doc = include_str!("../../README.md")]
|
||||
mod fmt;
|
||||
|
||||
pub use embassy_boot::{FirmwareUpdater, FlashConfig, FlashProvider, Partition, SingleFlashProvider};
|
||||
pub use embassy_boot::{AlignedBuffer, BootFlash, FirmwareUpdater, FlashConfig, Partition, SingleFlashConfig};
|
||||
use embassy_nrf::nvmc::{Nvmc, PAGE_SIZE};
|
||||
use embassy_nrf::peripherals::WDT;
|
||||
use embassy_nrf::wdt;
|
||||
use embedded_storage::nor_flash::{ErrorType, NorFlash, ReadNorFlash};
|
||||
|
||||
/// A bootloader for nRF devices.
|
||||
pub struct BootLoader {
|
||||
boot: embassy_boot::BootLoader<PAGE_SIZE>,
|
||||
boot: embassy_boot::BootLoader,
|
||||
magic: AlignedBuffer<4>,
|
||||
page: AlignedBuffer<PAGE_SIZE>,
|
||||
}
|
||||
|
||||
impl BootLoader {
|
||||
@ -58,21 +60,25 @@ impl BootLoader {
|
||||
pub fn new(active: Partition, dfu: Partition, state: Partition) -> Self {
|
||||
Self {
|
||||
boot: embassy_boot::BootLoader::new(active, dfu, state),
|
||||
magic: AlignedBuffer([0; 4]),
|
||||
page: AlignedBuffer([0; PAGE_SIZE]),
|
||||
}
|
||||
}
|
||||
|
||||
/// Boots the application without softdevice mechanisms
|
||||
pub fn prepare<F: FlashProvider>(&mut self, flash: &mut F) -> usize
|
||||
where
|
||||
[(); <<F as FlashProvider>::STATE as FlashConfig>::FLASH::WRITE_SIZE]:,
|
||||
[(); <<F as FlashProvider>::ACTIVE as FlashConfig>::FLASH::ERASE_SIZE]:,
|
||||
{
|
||||
match self.boot.prepare_boot(flash) {
|
||||
/// Inspect the bootloader state and perform actions required before booting, such as swapping
|
||||
/// firmware.
|
||||
pub fn prepare<F: FlashConfig>(&mut self, flash: &mut F) -> usize {
|
||||
match self.boot.prepare_boot(flash, &mut self.magic.0, &mut self.page.0) {
|
||||
Ok(_) => self.boot.boot_address(),
|
||||
Err(_) => panic!("boot prepare error!"),
|
||||
}
|
||||
}
|
||||
|
||||
/// Boots the application without softdevice mechanisms.
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// This modifies the stack pointer and reset vector and will run code placed in the active partition.
|
||||
#[cfg(not(feature = "softdevice"))]
|
||||
pub unsafe fn load(&mut self, start: usize) -> ! {
|
||||
let mut p = cortex_m::Peripherals::steal();
|
||||
@ -81,6 +87,11 @@ impl BootLoader {
|
||||
cortex_m::asm::bootload(start as *const u32)
|
||||
}
|
||||
|
||||
/// Boots the application assuming softdevice is present.
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// This modifies the stack pointer and reset vector and will run code placed in the active partition.
|
||||
#[cfg(feature = "softdevice")]
|
||||
pub unsafe fn load(&mut self, _app: usize) -> ! {
|
||||
use nrf_softdevice_mbr as mbr;
|
||||
|
||||
@ -1,19 +1,20 @@
|
||||
#![no_std]
|
||||
#![feature(generic_associated_types)]
|
||||
#![feature(type_alias_impl_trait)]
|
||||
#![allow(incomplete_features)]
|
||||
#![feature(generic_const_exprs)]
|
||||
|
||||
#![warn(missing_docs)]
|
||||
#![doc = include_str!("../../README.md")]
|
||||
mod fmt;
|
||||
|
||||
pub use embassy_boot::{FirmwareUpdater, FlashConfig, FlashProvider, Partition, SingleFlashProvider, State};
|
||||
use embedded_storage::nor_flash::NorFlash;
|
||||
pub use embassy_boot::{AlignedBuffer, BootFlash, FirmwareUpdater, FlashConfig, Partition, SingleFlashConfig, State};
|
||||
|
||||
pub struct BootLoader<const PAGE_SIZE: usize> {
|
||||
boot: embassy_boot::BootLoader<PAGE_SIZE>,
|
||||
/// A bootloader for STM32 devices.
|
||||
pub struct BootLoader<const PAGE_SIZE: usize, const WRITE_SIZE: usize> {
|
||||
boot: embassy_boot::BootLoader,
|
||||
magic: AlignedBuffer<WRITE_SIZE>,
|
||||
page: AlignedBuffer<PAGE_SIZE>,
|
||||
}
|
||||
|
||||
impl<const PAGE_SIZE: usize> BootLoader<PAGE_SIZE> {
|
||||
impl<const PAGE_SIZE: usize, const WRITE_SIZE: usize> BootLoader<PAGE_SIZE, WRITE_SIZE> {
|
||||
/// Create a new bootloader instance using parameters from linker script
|
||||
pub fn default() -> Self {
|
||||
extern "C" {
|
||||
@ -55,21 +56,25 @@ impl<const PAGE_SIZE: usize> BootLoader<PAGE_SIZE> {
|
||||
pub fn new(active: Partition, dfu: Partition, state: Partition) -> Self {
|
||||
Self {
|
||||
boot: embassy_boot::BootLoader::new(active, dfu, state),
|
||||
magic: AlignedBuffer([0; WRITE_SIZE]),
|
||||
page: AlignedBuffer([0; PAGE_SIZE]),
|
||||
}
|
||||
}
|
||||
|
||||
/// Boots the application
|
||||
pub fn prepare<F: FlashProvider>(&mut self, flash: &mut F) -> usize
|
||||
where
|
||||
[(); <<F as FlashProvider>::STATE as FlashConfig>::FLASH::WRITE_SIZE]:,
|
||||
[(); <<F as FlashProvider>::ACTIVE as FlashConfig>::FLASH::ERASE_SIZE]:,
|
||||
{
|
||||
match self.boot.prepare_boot(flash) {
|
||||
/// Inspect the bootloader state and perform actions required before booting, such as swapping
|
||||
/// firmware.
|
||||
pub fn prepare<F: FlashConfig>(&mut self, flash: &mut F) -> usize {
|
||||
match self.boot.prepare_boot(flash, self.magic.as_mut(), self.page.as_mut()) {
|
||||
Ok(_) => embassy_stm32::flash::FLASH_BASE + self.boot.boot_address(),
|
||||
Err(_) => panic!("boot prepare error!"),
|
||||
}
|
||||
}
|
||||
|
||||
/// Boots the application.
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// This modifies the stack pointer and reset vector and will run code placed in the active partition.
|
||||
pub unsafe fn load(&mut self, start: usize) -> ! {
|
||||
trace!("Loading app at 0x{:x}", start);
|
||||
#[allow(unused_mut)]
|
||||
|
||||
@ -36,7 +36,8 @@ async fn main(_spawner: Spawner) {
|
||||
updater.write_firmware(offset, &buf, &mut nvmc, 4096).await.unwrap();
|
||||
offset += chunk.len();
|
||||
}
|
||||
updater.update(&mut nvmc).await.unwrap();
|
||||
let mut magic = [0; 4];
|
||||
updater.mark_updated(&mut nvmc, &mut magic).await.unwrap();
|
||||
led.set_high();
|
||||
cortex_m::peripheral::SCB::sys_reset();
|
||||
}
|
||||
|
||||
@ -4,11 +4,11 @@
|
||||
|
||||
#[cfg(feature = "defmt-rtt")]
|
||||
use defmt_rtt::*;
|
||||
use embassy_boot_stm32::FirmwareUpdater;
|
||||
use embassy_boot_stm32::{AlignedBuffer, FirmwareUpdater};
|
||||
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 panic_reset as _;
|
||||
|
||||
@ -35,7 +35,8 @@ async fn main(_spawner: Spawner) {
|
||||
updater.write_firmware(offset, &buf, &mut flash, 2048).await.unwrap();
|
||||
offset += chunk.len();
|
||||
}
|
||||
updater.update(&mut flash).await.unwrap();
|
||||
let mut magic = AlignedBuffer([0; WRITE_SIZE]);
|
||||
updater.mark_updated(&mut flash, magic.as_mut()).await.unwrap();
|
||||
led.set_low();
|
||||
cortex_m::peripheral::SCB::sys_reset();
|
||||
}
|
||||
|
||||
@ -4,11 +4,11 @@
|
||||
|
||||
#[cfg(feature = "defmt-rtt")]
|
||||
use defmt_rtt::*;
|
||||
use embassy_boot_stm32::FirmwareUpdater;
|
||||
use embassy_boot_stm32::{AlignedBuffer, FirmwareUpdater};
|
||||
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 panic_reset as _;
|
||||
|
||||
@ -35,7 +35,8 @@ async fn main(_spawner: Spawner) {
|
||||
updater.write_firmware(offset, &buf, &mut flash, 2048).await.unwrap();
|
||||
offset += chunk.len();
|
||||
}
|
||||
updater.update(&mut flash).await.unwrap();
|
||||
let mut magic = AlignedBuffer([0; WRITE_SIZE]);
|
||||
updater.mark_updated(&mut flash, magic.as_mut()).await.unwrap();
|
||||
led.set_low();
|
||||
cortex_m::peripheral::SCB::sys_reset();
|
||||
}
|
||||
|
||||
@ -4,7 +4,7 @@ name = "embassy-boot-stm32h7-examples"
|
||||
version = "0.1.0"
|
||||
|
||||
[dependencies]
|
||||
embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
|
||||
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", "tick-32768hz"] }
|
||||
embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32h743zi", "time-driver-any", "exti"] }
|
||||
|
||||
@ -1,8 +1,9 @@
|
||||
#!/bin/bash
|
||||
probe-rs-cli 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
|
||||
|
||||
@ -4,11 +4,11 @@
|
||||
|
||||
#[cfg(feature = "defmt-rtt")]
|
||||
use defmt_rtt::*;
|
||||
use embassy_boot_stm32::FirmwareUpdater;
|
||||
use embassy_boot_stm32::{AlignedBuffer, FirmwareUpdater};
|
||||
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 panic_reset as _;
|
||||
|
||||
@ -29,13 +29,17 @@ async fn main(_spawner: Spawner) {
|
||||
let mut updater = FirmwareUpdater::default();
|
||||
button.wait_for_rising_edge().await;
|
||||
let mut offset = 0;
|
||||
let mut buf: [u8; 128 * 1024] = [0; 128 * 1024];
|
||||
let mut buf = AlignedBuffer([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();
|
||||
buf.as_mut()[..chunk.len()].copy_from_slice(chunk);
|
||||
updater
|
||||
.write_firmware(offset, buf.as_ref(), &mut flash, 2048)
|
||||
.await
|
||||
.unwrap();
|
||||
offset += chunk.len();
|
||||
}
|
||||
updater.update(&mut flash).await.unwrap();
|
||||
let mut magic = AlignedBuffer([0; WRITE_SIZE]);
|
||||
updater.mark_updated(&mut flash, magic.as_mut()).await.unwrap();
|
||||
led.set_low();
|
||||
cortex_m::peripheral::SCB::sys_reset();
|
||||
}
|
||||
|
||||
@ -4,11 +4,11 @@
|
||||
|
||||
#[cfg(feature = "defmt-rtt")]
|
||||
use defmt_rtt::*;
|
||||
use embassy_boot_stm32::FirmwareUpdater;
|
||||
use embassy_boot_stm32::{AlignedBuffer, FirmwareUpdater};
|
||||
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_time::{Duration, Timer};
|
||||
use panic_reset as _;
|
||||
@ -38,7 +38,8 @@ async fn main(_spawner: Spawner) {
|
||||
offset += chunk.len();
|
||||
}
|
||||
|
||||
updater.update(&mut flash).await.unwrap();
|
||||
let mut magic = AlignedBuffer([0; WRITE_SIZE]);
|
||||
updater.mark_updated(&mut flash, magic.as_mut()).await.unwrap();
|
||||
led.set_low();
|
||||
Timer::after(Duration::from_secs(1)).await;
|
||||
cortex_m::peripheral::SCB::sys_reset();
|
||||
|
||||
@ -4,11 +4,11 @@
|
||||
|
||||
#[cfg(feature = "defmt-rtt")]
|
||||
use defmt_rtt::*;
|
||||
use embassy_boot_stm32::FirmwareUpdater;
|
||||
use embassy_boot_stm32::{AlignedBuffer, FirmwareUpdater};
|
||||
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_time::{Duration, Timer};
|
||||
use panic_reset as _;
|
||||
@ -38,7 +38,8 @@ async fn main(_spawner: Spawner) {
|
||||
offset += chunk.len();
|
||||
}
|
||||
|
||||
updater.update(&mut flash).await.unwrap();
|
||||
let mut magic = AlignedBuffer([0; WRITE_SIZE]);
|
||||
updater.mark_updated(&mut flash, magic.as_mut()).await.unwrap();
|
||||
led.set_low();
|
||||
Timer::after(Duration::from_secs(1)).await;
|
||||
cortex_m::peripheral::SCB::sys_reset();
|
||||
|
||||
@ -4,11 +4,11 @@
|
||||
|
||||
#[cfg(feature = "defmt-rtt")]
|
||||
use defmt_rtt::*;
|
||||
use embassy_boot_stm32::FirmwareUpdater;
|
||||
use embassy_boot_stm32::{AlignedBuffer, FirmwareUpdater};
|
||||
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 panic_reset as _;
|
||||
|
||||
@ -35,7 +35,8 @@ async fn main(_spawner: Spawner) {
|
||||
updater.write_firmware(offset, &buf, &mut flash, 2048).await.unwrap();
|
||||
offset += chunk.len();
|
||||
}
|
||||
updater.update(&mut flash).await.unwrap();
|
||||
let mut magic = AlignedBuffer([0; WRITE_SIZE]);
|
||||
updater.mark_updated(&mut flash, magic.as_mut()).await.unwrap();
|
||||
led.set_low();
|
||||
cortex_m::peripheral::SCB::sys_reset();
|
||||
}
|
||||
|
||||
@ -4,11 +4,11 @@
|
||||
|
||||
#[cfg(feature = "defmt-rtt")]
|
||||
use defmt_rtt::*;
|
||||
use embassy_boot_stm32::FirmwareUpdater;
|
||||
use embassy_boot_stm32::{AlignedBuffer, FirmwareUpdater};
|
||||
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 panic_reset as _;
|
||||
|
||||
@ -37,7 +37,8 @@ async fn main(_spawner: Spawner) {
|
||||
updater.write_firmware(offset, &buf, &mut flash, 2048).await.unwrap();
|
||||
offset += chunk.len();
|
||||
}
|
||||
updater.update(&mut flash).await.unwrap();
|
||||
let mut magic = AlignedBuffer([0; WRITE_SIZE]);
|
||||
updater.mark_updated(&mut flash, magic.as_mut()).await.unwrap();
|
||||
//defmt::info!("Marked as updated");
|
||||
led.set_low();
|
||||
cortex_m::peripheral::SCB::sys_reset();
|
||||
|
||||
@ -20,10 +20,8 @@ fn main() -> ! {
|
||||
*/
|
||||
|
||||
let mut bl = BootLoader::default();
|
||||
let start = bl.prepare(&mut SingleFlashProvider::new(&mut WatchdogFlash::start(
|
||||
Nvmc::new(p.NVMC),
|
||||
p.WDT,
|
||||
5,
|
||||
let start = bl.prepare(&mut SingleFlashConfig::new(&mut BootFlash::<_, 4096>::new(
|
||||
&mut WatchdogFlash::start(Nvmc::new(p.NVMC), p.WDT, 5),
|
||||
)));
|
||||
unsafe { bl.load(start) }
|
||||
}
|
||||
|
||||
@ -5,7 +5,7 @@ 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, ERASE_SIZE, ERASE_VALUE, WRITE_SIZE};
|
||||
|
||||
#[entry]
|
||||
fn main() -> ! {
|
||||
@ -19,9 +19,11 @@ fn main() -> ! {
|
||||
}
|
||||
*/
|
||||
|
||||
let mut bl: BootLoader<ERASE_SIZE> = BootLoader::default();
|
||||
let mut bl: BootLoader<ERASE_SIZE, WRITE_SIZE> = BootLoader::default();
|
||||
let mut flash = Flash::unlock(p.FLASH);
|
||||
let start = bl.prepare(&mut SingleFlashProvider::new(&mut flash));
|
||||
let start = bl.prepare(&mut SingleFlashConfig::new(
|
||||
&mut BootFlash::<_, ERASE_SIZE, ERASE_VALUE>::new(&mut flash),
|
||||
));
|
||||
core::mem::drop(flash);
|
||||
unsafe { bl.load(start) }
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user