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use super::builder::FlashBuilder;
use super::flasher::Flasher;
use super::{FlashBuilderError, FlashProgress};
use crate::config::{FlashRegion, MemoryRange, MemoryRegion};
use crate::session::Session;
use std::collections::HashMap;
use thiserror::Error;
pub struct FlashLoader<'a, 'b> {
memory_map: &'a [MemoryRegion],
builders: HashMap<FlashRegion, FlashBuilder<'b>>,
keep_unwritten: bool,
}
#[derive(Debug, Error)]
pub enum FlashLoaderError {
#[error("No flash memory was found at address {0:#08x}.")]
NoSuitableFlash(u32),
#[error(
"Trying to access flash at address {0:#08x}, which is not inside any defined flash region."
)]
MemoryRegionNotFlash(u32),
#[error("Trying to write flash, but no flash loader algorithm is attached.")]
NoFlashLoaderAlgorithmAttached,
#[error("Builder error: {0}")]
Builder(#[from] FlashBuilderError),
}
impl<'a, 'b> FlashLoader<'a, 'b> {
pub fn new(memory_map: &'a [MemoryRegion], keep_unwritten: bool) -> Self {
Self {
memory_map,
builders: HashMap::new(),
keep_unwritten,
}
}
pub fn add_data(&mut self, mut address: u32, data: &'b [u8]) -> Result<(), FlashLoaderError> {
let size = data.len();
let mut remaining = size;
while remaining > 0 {
let possible_region = Self::get_region_for_address(self.memory_map, address);
if let Some(MemoryRegion::Flash(region)) = possible_region {
if !self.builders.contains_key(region) {
self.builders.insert(region.clone(), FlashBuilder::new());
};
let program_length =
usize::min(remaining, (region.range.end - address + 1) as usize);
self.builders
.get_mut(®ion)
.map(|r| r.add_data(address, &data[size - remaining..program_length]));
remaining -= program_length;
address += program_length as u32;
} else {
return Err(FlashLoaderError::NoSuitableFlash(address));
}
}
Ok(())
}
pub fn get_region_for_address(
memory_map: &[MemoryRegion],
address: u32,
) -> Option<&MemoryRegion> {
for region in memory_map {
let r = match region {
MemoryRegion::Ram(r) => r.range.clone(),
MemoryRegion::Flash(r) => r.range.clone(),
MemoryRegion::Generic(r) => r.range.clone(),
};
if r.contains(&address) {
return Some(region);
}
}
None
}
pub fn commit(
&mut self,
session: &Session,
progress: &FlashProgress,
do_chip_erase: bool,
) -> Result<(), FlashLoaderError> {
for (region, builder) in &self.builders {
log::debug!(
"Using builder for region (0x{:08x}..0x{:08x})",
region.range.start,
region.range.end
);
for algorithm in session.flash_algorithms() {
log::debug!(
"Algorithm {} - start: {:#08x} - size: {:#08x}",
algorithm.name,
algorithm.flash_properties.address_range.start,
algorithm.flash_properties.address_range.end
- algorithm.flash_properties.address_range.start
);
}
let algorithms: Vec<_> = session.flash_algorithms();
let algorithms = algorithms
.iter()
.filter(|fa| {
fa.flash_properties
.address_range
.contains_range(®ion.range)
})
.collect::<Vec<_>>();
let raw_flash_algorithm = match algorithms.len() {
0 => {
return Err(FlashLoaderError::NoFlashLoaderAlgorithmAttached);
}
1 => &algorithms[0],
_ => algorithms
.iter()
.find(|a| a.default)
.ok_or(FlashLoaderError::NoFlashLoaderAlgorithmAttached)?,
};
let mm = session.memory_map();
let ram = mm
.iter()
.find(|mm| match mm {
MemoryRegion::Ram(_) => true,
_ => false,
})
.expect("No RAM defined for chip.");
let unwrapped_ram = match ram {
MemoryRegion::Ram(ram) => ram,
_ => unreachable!(),
};
let flash_algorithm = raw_flash_algorithm.assemble(unwrapped_ram);
builder.program(
Flasher::new(session.clone(), &flash_algorithm, region),
do_chip_erase,
self.keep_unwritten,
progress,
)?
}
Ok(())
}
}