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Merge #1329

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1329: Reduce bootloader memory usage r=rmja a=rmja

By not requiring that the provided buffer must be able to contain one "erase-size" bytes.

This PR is the successor of #1314 and replaces it entirely.

Co-authored-by: Rasmus Melchior Jacobsen <rmja@laesoe.org>
This commit is contained in:
bors[bot] 2023-04-04 21:00:11 +00:00 committed by GitHub
commit 064ec9581e
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9 changed files with 157 additions and 196 deletions
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239
embassy-boot/boot/src/boot_loader.rs
View file

@ -30,23 +30,16 @@ where
}
}
/// Extension of the embedded-storage flash type information with block size and erase value.
pub trait Flash: NorFlash {
/// The block size that should be used when writing to flash. For most builtin flashes, this is the same as the erase
/// size of the flash, but for external QSPI flash modules, this can be lower.
const BLOCK_SIZE: usize;
/// The erase value of the flash. Typically the default of 0xFF is used, but some flashes use a different value.
const ERASE_VALUE: u8 = 0xFF;
}
/// Trait defining the flash handles used for active and DFU partition
/// Trait defining the flash handles used for active and DFU partition.
pub trait FlashConfig {
/// The erase value of the state flash. Typically the default of 0xFF is used, but some flashes use a different value.
const STATE_ERASE_VALUE: u8 = 0xFF;
/// Flash type used for the state partition.
type STATE: Flash;
type STATE: NorFlash;
/// Flash type used for the active partition.
type ACTIVE: Flash;
type ACTIVE: NorFlash;
/// Flash type used for the dfu partition.
type DFU: Flash;
type DFU: NorFlash;
/// Return flash instance used to write/read to/from active partition.
fn active(&mut self) -> &mut Self::ACTIVE;
@ -56,8 +49,18 @@ pub trait FlashConfig {
fn state(&mut self) -> &mut Self::STATE;
}
/// BootLoader works with any flash implementing embedded_storage and can also work with
/// different page sizes and flash write sizes.
trait FlashConfigEx {
fn page_size() -> usize;
}
impl<T: FlashConfig> FlashConfigEx for T {
/// Get the page size which is the "unit of operation" within the bootloader.
fn page_size() -> usize {
core::cmp::max(T::ACTIVE::ERASE_SIZE, T::DFU::ERASE_SIZE)
}
}
/// BootLoader works with any flash implementing embedded_storage.
pub struct BootLoader {
// Page with current state of bootloader. The state partition has the following format:
// All ranges are in multiples of WRITE_SIZE bytes.
@ -91,6 +94,9 @@ impl BootLoader {
/// The DFU partition is assumed to be 1 page bigger than the active partition for the swap
/// algorithm to work correctly.
///
/// The provided aligned_buf argument must satisfy any alignment requirements
/// given by the partition flashes. All flash operations will use this buffer.
///
/// SWAPPING
///
/// Assume a flash size of 3 pages for the active partition, and 4 pages for the DFU partition.
@ -169,87 +175,95 @@ impl BootLoader {
/// | DFU | 3 | 3 | 2 | 1 | 3 |
/// +-----------+--------------+--------+--------+--------+--------+
///
pub fn prepare_boot<P: FlashConfig>(
&mut self,
p: &mut P,
magic: &mut [u8],
page: &mut [u8],
) -> Result<State, BootError> {
pub fn prepare_boot<P: FlashConfig>(&mut self, p: &mut P, aligned_buf: &mut [u8]) -> Result<State, BootError> {
// Ensure we have enough progress pages to store copy progress
assert_partitions(self.active, self.dfu, self.state, page.len(), P::STATE::WRITE_SIZE);
assert_eq!(magic.len(), P::STATE::WRITE_SIZE);
assert_eq!(0, P::page_size() % aligned_buf.len());
assert_eq!(0, P::page_size() % P::ACTIVE::WRITE_SIZE);
assert_eq!(0, P::page_size() % P::ACTIVE::ERASE_SIZE);
assert_eq!(0, P::page_size() % P::DFU::WRITE_SIZE);
assert_eq!(0, P::page_size() % P::DFU::ERASE_SIZE);
assert!(aligned_buf.len() >= P::STATE::WRITE_SIZE);
assert_eq!(0, aligned_buf.len() % P::ACTIVE::WRITE_SIZE);
assert_eq!(0, aligned_buf.len() % P::DFU::WRITE_SIZE);
assert_partitions(self.active, self.dfu, self.state, P::page_size(), P::STATE::WRITE_SIZE);
// Copy contents from partition N to active
let state = self.read_state(p, magic)?;
let state = self.read_state(p, aligned_buf)?;
if state == State::Swap {
//
// Check if we already swapped. If we're in the swap state, this means we should revert
// since the app has failed to mark boot as successful
//
if !self.is_swapped(p, magic, page)? {
if !self.is_swapped(p, aligned_buf)? {
trace!("Swapping");
self.swap(p, magic, page)?;
self.swap(p, aligned_buf)?;
trace!("Swapping done");
} else {
trace!("Reverting");
self.revert(p, magic, page)?;
self.revert(p, aligned_buf)?;
let state_flash = p.state();
let state_word = &mut aligned_buf[..P::STATE::WRITE_SIZE];
// Invalidate progress
magic.fill(!P::STATE::ERASE_VALUE);
state_word.fill(!P::STATE_ERASE_VALUE);
self.state
.write_blocking(state_flash, P::STATE::WRITE_SIZE as u32, magic)?;
.write_blocking(state_flash, P::STATE::WRITE_SIZE as u32, state_word)?;
// Clear magic and progress
self.state.wipe_blocking(state_flash)?;
// Set magic
magic.fill(BOOT_MAGIC);
self.state.write_blocking(state_flash, 0, magic)?;
state_word.fill(BOOT_MAGIC);
self.state.write_blocking(state_flash, 0, state_word)?;
}
}
Ok(state)
}
fn is_swapped<P: FlashConfig>(&mut self, p: &mut P, magic: &mut [u8], page: &mut [u8]) -> Result<bool, BootError> {
let page_size = page.len();
let page_count = self.active.len() / page_size;
let progress = self.current_progress(p, magic)?;
fn is_swapped<P: FlashConfig>(&mut self, p: &mut P, aligned_buf: &mut [u8]) -> Result<bool, BootError> {
let page_count = self.active.len() / P::page_size();
let progress = self.current_progress(p, aligned_buf)?;
Ok(progress >= page_count * 2)
}
fn current_progress<P: FlashConfig>(&mut self, config: &mut P, aligned: &mut [u8]) -> Result<usize, BootError> {
let write_size = aligned.len();
let max_index = ((self.state.len() - write_size) / write_size) - 2;
aligned.fill(!P::STATE::ERASE_VALUE);
fn current_progress<P: FlashConfig>(&mut self, config: &mut P, aligned_buf: &mut [u8]) -> Result<usize, BootError> {
let max_index = ((self.state.len() - P::STATE::WRITE_SIZE) / P::STATE::WRITE_SIZE) - 2;
let state_flash = config.state();
let state_word = &mut aligned_buf[..P::STATE::WRITE_SIZE];
self.state
.read_blocking(state_flash, P::STATE::WRITE_SIZE as u32, aligned)?;
if aligned.iter().any(|&b| b != P::STATE::ERASE_VALUE) {
.read_blocking(state_flash, P::STATE::WRITE_SIZE as u32, state_word)?;
if state_word.iter().any(|&b| b != P::STATE_ERASE_VALUE) {
// Progress is invalid
return Ok(max_index);
}
for index in 0..max_index {
self.state
.read_blocking(state_flash, (2 + index) as u32 * P::STATE::WRITE_SIZE as u32, aligned)?;
self.state.read_blocking(
state_flash,
(2 + index) as u32 * P::STATE::WRITE_SIZE as u32,
state_word,
)?;
if aligned.iter().any(|&b| b == P::STATE::ERASE_VALUE) {
if state_word.iter().any(|&b| b == P::STATE_ERASE_VALUE) {
return Ok(index);
}
}
Ok(max_index)
}
fn update_progress<P: FlashConfig>(&mut self, index: usize, p: &mut P, magic: &mut [u8]) -> Result<(), BootError> {
let aligned = magic;
aligned.fill(!P::STATE::ERASE_VALUE);
fn update_progress<P: FlashConfig>(
&mut self,
index: usize,
p: &mut P,
aligned_buf: &mut [u8],
) -> Result<(), BootError> {
let state_word = &mut aligned_buf[..P::STATE::WRITE_SIZE];
state_word.fill(!P::STATE_ERASE_VALUE);
self.state
.write_blocking(p.state(), (2 + index) as u32 * P::STATE::WRITE_SIZE as u32, aligned)?;
.write_blocking(p.state(), (2 + index) as u32 * P::STATE::WRITE_SIZE as u32, state_word)?;
Ok(())
}
@ -259,26 +273,22 @@ impl BootLoader {
from_offset: u32,
to_offset: u32,
p: &mut P,
magic: &mut [u8],
page: &mut [u8],
aligned_buf: &mut [u8],
) -> Result<(), BootError> {
let buf = page;
if self.current_progress(p, magic)? <= idx {
let mut offset = from_offset;
for chunk in buf.chunks_mut(P::DFU::BLOCK_SIZE) {
self.dfu.read_blocking(p.dfu(), offset, chunk)?;
offset += chunk.len() as u32;
}
if self.current_progress(p, aligned_buf)? <= idx {
let page_size = P::page_size() as u32;
self.active
.erase_blocking(p.active(), to_offset, to_offset + buf.len() as u32)?;
.erase_blocking(p.active(), to_offset, to_offset + page_size)?;
let mut offset = to_offset;
for chunk in buf.chunks(P::ACTIVE::BLOCK_SIZE) {
self.active.write_blocking(p.active(), offset, chunk)?;
offset += chunk.len() as u32;
for offset_in_page in (0..page_size).step_by(aligned_buf.len()) {
self.dfu
.read_blocking(p.dfu(), from_offset + offset_in_page as u32, aligned_buf)?;
self.active
.write_blocking(p.active(), to_offset + offset_in_page as u32, aligned_buf)?;
}
self.update_progress(idx, p, magic)?;
self.update_progress(idx, p, aligned_buf)?;
}
Ok(())
}
@ -289,32 +299,28 @@ impl BootLoader {
from_offset: u32,
to_offset: u32,
p: &mut P,
magic: &mut [u8],
page: &mut [u8],
aligned_buf: &mut [u8],
) -> Result<(), BootError> {
let buf = page;
if self.current_progress(p, magic)? <= idx {
let mut offset = from_offset;
for chunk in buf.chunks_mut(P::ACTIVE::BLOCK_SIZE) {
self.active.read_blocking(p.active(), offset, chunk)?;
offset += chunk.len() as u32;
}
if self.current_progress(p, aligned_buf)? <= idx {
let page_size = P::page_size() as u32;
self.dfu
.erase_blocking(p.dfu(), to_offset as u32, to_offset + buf.len() as u32)?;
.erase_blocking(p.dfu(), to_offset as u32, to_offset + page_size)?;
let mut offset = to_offset;
for chunk in buf.chunks(P::DFU::BLOCK_SIZE) {
self.dfu.write_blocking(p.dfu(), offset, chunk)?;
offset += chunk.len() as u32;
for offset_in_page in (0..page_size).step_by(aligned_buf.len()) {
self.active
.read_blocking(p.active(), from_offset + offset_in_page as u32, aligned_buf)?;
self.dfu
.write_blocking(p.dfu(), to_offset + offset_in_page as u32, aligned_buf)?;
}
self.update_progress(idx, p, magic)?;
self.update_progress(idx, p, aligned_buf)?;
}
Ok(())
}
fn swap<P: FlashConfig>(&mut self, p: &mut P, magic: &mut [u8], page: &mut [u8]) -> Result<(), BootError> {
let page_size = page.len();
fn swap<P: FlashConfig>(&mut self, p: &mut P, aligned_buf: &mut [u8]) -> Result<(), BootError> {
let page_size = P::page_size();
let page_count = self.active.len() / page_size;
trace!("Page count: {}", page_count);
for page_num in 0..page_count {
@ -326,20 +332,20 @@ impl BootLoader {
let active_from_offset = ((page_count - 1 - page_num) * page_size) as u32;
let dfu_to_offset = ((page_count - page_num) * page_size) as u32;
//trace!("Copy active {} to dfu {}", active_from_offset, dfu_to_offset);
self.copy_page_once_to_dfu(idx, active_from_offset, dfu_to_offset, p, magic, page)?;
self.copy_page_once_to_dfu(idx, active_from_offset, dfu_to_offset, p, aligned_buf)?;
// Copy DFU page to the active page
let active_to_offset = ((page_count - 1 - page_num) * page_size) as u32;
let dfu_from_offset = ((page_count - 1 - page_num) * page_size) as u32;
//trace!("Copy dfy {} to active {}", dfu_from_offset, active_to_offset);
self.copy_page_once_to_active(idx + 1, dfu_from_offset, active_to_offset, p, magic, page)?;
self.copy_page_once_to_active(idx + 1, dfu_from_offset, active_to_offset, p, aligned_buf)?;
}
Ok(())
}
fn revert<P: FlashConfig>(&mut self, p: &mut P, magic: &mut [u8], page: &mut [u8]) -> Result<(), BootError> {
let page_size = page.len();
fn revert<P: FlashConfig>(&mut self, p: &mut P, aligned_buf: &mut [u8]) -> Result<(), BootError> {
let page_size = P::page_size();
let page_count = self.active.len() / page_size;
for page_num in 0..page_count {
let idx = page_count * 2 + page_num * 2;
@ -347,21 +353,22 @@ impl BootLoader {
// Copy the bad active page to the DFU page
let active_from_offset = (page_num * page_size) as u32;
let dfu_to_offset = (page_num * page_size) as u32;
self.copy_page_once_to_dfu(idx, active_from_offset, dfu_to_offset, p, magic, page)?;
self.copy_page_once_to_dfu(idx, active_from_offset, dfu_to_offset, p, aligned_buf)?;
// Copy the DFU page back to the active page
let active_to_offset = (page_num * page_size) as u32;
let dfu_from_offset = ((page_num + 1) * page_size) as u32;
self.copy_page_once_to_active(idx + 1, dfu_from_offset, active_to_offset, p, magic, page)?;
self.copy_page_once_to_active(idx + 1, dfu_from_offset, active_to_offset, p, aligned_buf)?;
}
Ok(())
}
fn read_state<P: FlashConfig>(&mut self, config: &mut P, magic: &mut [u8]) -> Result<State, BootError> {
self.state.read_blocking(config.state(), 0, magic)?;
fn read_state<P: FlashConfig>(&mut self, config: &mut P, aligned_buf: &mut [u8]) -> Result<State, BootError> {
let state_word = &mut aligned_buf[..P::STATE::WRITE_SIZE];
self.state.read_blocking(config.state(), 0, state_word)?;
if !magic.iter().any(|&b| b != SWAP_MAGIC) {
if !state_word.iter().any(|&b| b != SWAP_MAGIC) {
Ok(State::Swap)
} else {
Ok(State::Boot)
@ -377,16 +384,16 @@ fn assert_partitions(active: Partition, dfu: Partition, state: Partition, page_s
}
/// A flash wrapper implementing the Flash and embedded_storage traits.
pub struct BootFlash<F, const BLOCK_SIZE: usize, const ERASE_VALUE: u8 = 0xFF>
pub struct BootFlash<F>
where
F: NorFlash + ReadNorFlash,
F: NorFlash,
{
flash: F,
}
impl<F, const BLOCK_SIZE: usize, const ERASE_VALUE: u8> BootFlash<F, BLOCK_SIZE, ERASE_VALUE>
impl<F> BootFlash<F>
where
F: NorFlash + ReadNorFlash,
F: NorFlash,
{
/// Create a new instance of a bootable flash
pub fn new(flash: F) -> Self {
@ -394,24 +401,16 @@ where
}
}
impl<F, const BLOCK_SIZE: usize, const ERASE_VALUE: u8> Flash for BootFlash<F, BLOCK_SIZE, ERASE_VALUE>
impl<F> ErrorType for BootFlash<F>
where
F: NorFlash + ReadNorFlash,
{
const BLOCK_SIZE: usize = BLOCK_SIZE;
const ERASE_VALUE: u8 = ERASE_VALUE;
}
impl<F, const BLOCK_SIZE: usize, const ERASE_VALUE: u8> ErrorType for BootFlash<F, BLOCK_SIZE, ERASE_VALUE>
where
F: ReadNorFlash + NorFlash,
F: NorFlash,
{
type Error = F::Error;
}
impl<F, const BLOCK_SIZE: usize, const ERASE_VALUE: u8> NorFlash for BootFlash<F, BLOCK_SIZE, ERASE_VALUE>
impl<F> NorFlash for BootFlash<F>
where
F: ReadNorFlash + NorFlash,
F: NorFlash,
{
const WRITE_SIZE: usize = F::WRITE_SIZE;
const ERASE_SIZE: usize = F::ERASE_SIZE;
@ -425,9 +424,9 @@ where
}
}
impl<F, const BLOCK_SIZE: usize, const ERASE_VALUE: u8> ReadNorFlash for BootFlash<F, BLOCK_SIZE, ERASE_VALUE>
impl<F> ReadNorFlash for BootFlash<F>
where
F: ReadNorFlash + NorFlash,
F: NorFlash,
{
const READ_SIZE: usize = F::READ_SIZE;
@ -443,14 +442,14 @@ where
/// Convenience provider that uses a single flash for all partitions.
pub struct SingleFlashConfig<'a, F>
where
F: Flash,
F: NorFlash,
{
flash: &'a mut F,
}
impl<'a, F> SingleFlashConfig<'a, F>
where
F: Flash,
F: NorFlash,
{
/// Create a provider for a single flash.
pub fn new(flash: &'a mut F) -> Self {
@ -460,7 +459,7 @@ where
impl<'a, F> FlashConfig for SingleFlashConfig<'a, F>
where
F: Flash,
F: NorFlash,
{
type STATE = F;
type ACTIVE = F;
@ -480,9 +479,9 @@ where
/// Convenience flash provider that uses separate flash instances for each partition.
pub struct MultiFlashConfig<'a, ACTIVE, STATE, DFU>
where
ACTIVE: Flash,
STATE: Flash,
DFU: Flash,
ACTIVE: NorFlash,
STATE: NorFlash,
DFU: NorFlash,
{
active: &'a mut ACTIVE,
state: &'a mut STATE,
@ -491,9 +490,9 @@ where
impl<'a, ACTIVE, STATE, DFU> MultiFlashConfig<'a, ACTIVE, STATE, DFU>
where
ACTIVE: Flash,
STATE: Flash,
DFU: Flash,
ACTIVE: NorFlash,
STATE: NorFlash,
DFU: NorFlash,
{
/// 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 {
@ -503,9 +502,9 @@ where
impl<'a, ACTIVE, STATE, DFU> FlashConfig for MultiFlashConfig<'a, ACTIVE, STATE, DFU>
where
ACTIVE: Flash,
STATE: Flash,
DFU: Flash,
ACTIVE: NorFlash,
STATE: NorFlash,
DFU: NorFlash,
{
type STATE = STATE;
type ACTIVE = ACTIVE;

44
embassy-boot/boot/src/lib.rs
View file

@ -10,7 +10,7 @@ mod firmware_updater;
mod mem_flash;
mod partition;
pub use boot_loader::{BootError, BootFlash, BootLoader, Flash, FlashConfig, MultiFlashConfig, SingleFlashConfig};
pub use boot_loader::{BootError, BootFlash, BootLoader, FlashConfig, MultiFlashConfig, SingleFlashConfig};
pub use firmware_updater::{FirmwareUpdater, FirmwareUpdaterError};
pub use partition::Partition;
@ -77,12 +77,8 @@ mod tests {
let mut bootloader: BootLoader = BootLoader::new(ACTIVE, DFU, STATE);
let mut magic = [0; 4];
let mut page = [0; 4096];
assert_eq!(
State::Boot,
bootloader.prepare_boot(&mut flash, &mut magic, &mut page).unwrap()
);
assert_eq!(State::Boot, bootloader.prepare_boot(&mut flash, &mut page).unwrap());
}
#[test]
@ -103,19 +99,14 @@ mod tests {
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)).unwrap();
offset += chunk.len();
}
block_on(updater.write_firmware(0, &update, &mut flash)).unwrap();
block_on(updater.mark_updated(&mut flash, &mut aligned)).unwrap();
let mut magic = [0; 4];
let mut page = [0; 4096];
let mut page = [0; 1024];
assert_eq!(
State::Swap,
bootloader
.prepare_boot(&mut SingleFlashConfig::new(&mut flash), &mut magic, &mut page)
.prepare_boot(&mut SingleFlashConfig::new(&mut flash), &mut page)
.unwrap()
);
@ -132,7 +123,7 @@ mod tests {
assert_eq!(
State::Swap,
bootloader
.prepare_boot(&mut SingleFlashConfig::new(&mut flash), &mut magic, &mut page)
.prepare_boot(&mut SingleFlashConfig::new(&mut flash), &mut page)
.unwrap()
);
@ -150,7 +141,7 @@ mod tests {
assert_eq!(
State::Boot,
bootloader
.prepare_boot(&mut SingleFlashConfig::new(&mut flash), &mut magic, &mut page)
.prepare_boot(&mut SingleFlashConfig::new(&mut flash), &mut page)
.unwrap()
);
}
@ -176,25 +167,16 @@ mod tests {
let mut updater = FirmwareUpdater::new(DFU, STATE);
let mut offset = 0;
for chunk in update.chunks(2048) {
block_on(updater.write_firmware(offset, chunk, &mut dfu)).unwrap();
offset += chunk.len();
}
block_on(updater.write_firmware(0, &update, &mut dfu)).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];
assert_eq!(
State::Swap,
bootloader
.prepare_boot(
&mut MultiFlashConfig::new(&mut active, &mut state, &mut dfu),
&mut magic,
&mut page
)
.prepare_boot(&mut MultiFlashConfig::new(&mut active, &mut state, &mut dfu), &mut page)
.unwrap()
);
@ -229,22 +211,16 @@ mod tests {
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 dfu)).unwrap();
offset += chunk.len();
}
block_on(updater.write_firmware(0, &update, &mut dfu)).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];
assert_eq!(
State::Swap,
bootloader
.prepare_boot(
&mut MultiFlashConfig::new(&mut active, &mut state, &mut dfu,),
&mut magic,
&mut page
)
.unwrap()

9
embassy-boot/boot/src/mem_flash.rs
View file

@ -5,8 +5,6 @@ use core::ops::{Bound, Range, RangeBounds};
use embedded_storage::nor_flash::{ErrorType, NorFlash, NorFlashError, NorFlashErrorKind, ReadNorFlash};
use embedded_storage_async::nor_flash::{NorFlash as AsyncNorFlash, ReadNorFlash as AsyncReadNorFlash};
use crate::Flash;
pub struct MemFlash<const SIZE: usize, const ERASE_SIZE: usize, const WRITE_SIZE: usize> {
pub mem: [u8; SIZE],
pub pending_write_successes: Option<usize>,
@ -44,13 +42,6 @@ impl<const SIZE: usize, const ERASE_SIZE: usize, const WRITE_SIZE: usize> Defaul
}
}
impl<const SIZE: usize, const ERASE_SIZE: usize, const WRITE_SIZE: usize> 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> ErrorType
for MemFlash<SIZE, ERASE_SIZE, WRITE_SIZE>
{

14
embassy-boot/nrf/src/lib.rs
View file

@ -11,13 +11,12 @@ use embassy_nrf::wdt;
use embedded_storage::nor_flash::{ErrorType, NorFlash, ReadNorFlash};
/// A bootloader for nRF devices.
pub struct BootLoader {
pub struct BootLoader<const BUFFER_SIZE: usize = PAGE_SIZE> {
boot: embassy_boot::BootLoader,
magic: AlignedBuffer<4>,
page: AlignedBuffer<PAGE_SIZE>,
aligned_buf: AlignedBuffer<BUFFER_SIZE>,
}
impl Default for BootLoader {
impl Default for BootLoader<PAGE_SIZE> {
/// Create a new bootloader instance using parameters from linker script
fn default() -> Self {
extern "C" {
@ -56,20 +55,19 @@ impl Default for BootLoader {
}
}
impl BootLoader {
impl<const BUFFER_SIZE: usize> BootLoader<BUFFER_SIZE> {
/// Create a new bootloader instance using the supplied partitions for active, dfu and state.
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]),
aligned_buf: AlignedBuffer([0; BUFFER_SIZE]),
}
}
/// 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) {
match self.boot.prepare_boot(flash, &mut self.aligned_buf.0) {
Ok(_) => self.boot.boot_address(),
Err(_) => panic!("boot prepare error!"),
}

16
embassy-boot/rp/src/lib.rs
View file

@ -5,33 +5,31 @@
mod fmt;
pub use embassy_boot::{AlignedBuffer, BootFlash, FirmwareUpdater, FlashConfig, Partition, SingleFlashConfig, State};
use embassy_rp::flash::{Flash, ERASE_SIZE, WRITE_SIZE};
use embassy_rp::flash::{Flash, ERASE_SIZE};
use embassy_rp::peripherals::{FLASH, WATCHDOG};
use embassy_rp::watchdog::Watchdog;
use embassy_time::Duration;
use embedded_storage::nor_flash::{ErrorType, NorFlash, ReadNorFlash};
/// A bootloader for RP2040 devices.
pub struct BootLoader {
pub struct BootLoader<const BUFFER_SIZE: usize = ERASE_SIZE> {
boot: embassy_boot::BootLoader,
magic: AlignedBuffer<WRITE_SIZE>,
page: AlignedBuffer<ERASE_SIZE>,
aligned_buf: AlignedBuffer<BUFFER_SIZE>,
}
impl BootLoader {
impl<const BUFFER_SIZE: usize> BootLoader<BUFFER_SIZE> {
/// Create a new bootloader instance using the supplied partitions for active, dfu and state.
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; ERASE_SIZE]),
aligned_buf: AlignedBuffer([0; BUFFER_SIZE]),
}
}
/// 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()) {
match self.boot.prepare_boot(flash, self.aligned_buf.as_mut()) {
Ok(_) => embassy_rp::flash::FLASH_BASE + self.boot.boot_address(),
Err(_) => panic!("boot prepare error!"),
}
@ -54,7 +52,7 @@ impl BootLoader {
}
}
impl Default for BootLoader {
impl Default for BootLoader<ERASE_SIZE> {
/// Create a new bootloader instance using parameters from linker script
fn default() -> Self {
extern "C" {

14
embassy-boot/stm32/src/lib.rs
View file

@ -7,26 +7,24 @@ mod fmt;
pub use embassy_boot::{AlignedBuffer, BootFlash, FirmwareUpdater, FlashConfig, Partition, SingleFlashConfig, State};
/// A bootloader for STM32 devices.
pub struct BootLoader<const PAGE_SIZE: usize, const WRITE_SIZE: usize> {
pub struct BootLoader<const BUFFER_SIZE: usize> {
boot: embassy_boot::BootLoader,
magic: AlignedBuffer<WRITE_SIZE>,
page: AlignedBuffer<PAGE_SIZE>,
aligned_buf: AlignedBuffer<BUFFER_SIZE>,
}
impl<const PAGE_SIZE: usize, const WRITE_SIZE: usize> BootLoader<PAGE_SIZE, WRITE_SIZE> {
impl<const BUFFER_SIZE: usize> BootLoader<BUFFER_SIZE> {
/// Create a new bootloader instance using the supplied partitions for active, dfu and state.
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]),
aligned_buf: AlignedBuffer([0; BUFFER_SIZE]),
}
}
/// 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()) {
match self.boot.prepare_boot(flash, self.aligned_buf.as_mut()) {
Ok(_) => embassy_stm32::flash::FLASH_BASE + self.boot.boot_address(),
Err(_) => panic!("boot prepare error!"),
}
@ -49,7 +47,7 @@ impl<const PAGE_SIZE: usize, const WRITE_SIZE: usize> BootLoader<PAGE_SIZE, WRIT
}
}
impl<const PAGE_SIZE: usize, const WRITE_SIZE: usize> Default for BootLoader<PAGE_SIZE, WRITE_SIZE> {
impl<const BUFFER_SIZE: usize> Default for BootLoader<BUFFER_SIZE> {
/// Create a new bootloader instance using parameters from linker script
fn default() -> Self {
extern "C" {

8
examples/boot/bootloader/nrf/src/main.rs
View file

@ -27,9 +27,11 @@ fn main() -> ! {
wdt_config.run_during_sleep = true;
wdt_config.run_during_debug_halt = false;
let start = bl.prepare(&mut SingleFlashConfig::new(&mut BootFlash::<_, 4096>::new(
WatchdogFlash::start(Nvmc::new(p.NVMC), p.WDT, wdt_config),
)));
let start = bl.prepare(&mut SingleFlashConfig::new(&mut BootFlash::new(WatchdogFlash::start(
Nvmc::new(p.NVMC),
p.WDT,
wdt_config,
))));
unsafe { bl.load(start) }
}

3
examples/boot/bootloader/rp/src/main.rs
View file

@ -5,7 +5,6 @@ use cortex_m_rt::{entry, exception};
#[cfg(feature = "defmt")]
use defmt_rtt as _;
use embassy_boot_rp::*;
use embassy_rp::flash::ERASE_SIZE;
use embassy_time::Duration;
const FLASH_SIZE: usize = 2 * 1024 * 1024;
@ -24,7 +23,7 @@ fn main() -> ! {
let mut bl: BootLoader = BootLoader::default();
let flash = WatchdogFlash::<FLASH_SIZE>::start(p.FLASH, p.WATCHDOG, Duration::from_secs(8));
let mut flash = BootFlash::<_, ERASE_SIZE>::new(flash);
let mut flash = BootFlash::new(flash);
let start = bl.prepare(&mut SingleFlashConfig::new(&mut flash));
core::mem::drop(flash);

6
examples/boot/bootloader/stm32/src/main.rs
View file

@ -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, ERASE_VALUE, WRITE_SIZE};
use embassy_stm32::flash::{Flash, ERASE_SIZE};
#[entry]
fn main() -> ! {
@ -19,9 +19,9 @@ fn main() -> ! {
}
*/
let mut bl: BootLoader<ERASE_SIZE, WRITE_SIZE> = BootLoader::default();
let mut bl: BootLoader<ERASE_SIZE> = BootLoader::default();
let flash = Flash::new(p.FLASH);
let mut flash = BootFlash::<_, ERASE_SIZE, ERASE_VALUE>::new(flash);
let mut flash = BootFlash::new(flash);
let start = bl.prepare(&mut SingleFlashConfig::new(&mut flash));
core::mem::drop(flash);
unsafe { bl.load(start) }