Method write_ec_flash

framework_lib/src/chromium_ec/mod.rs:1047–1088

Write a big section of EC flash. Must be unlocked already

(&self, addr: u32, data: &[u8], dry_run: bool)

    /// Write a big section of EC flash. Must be unlocked already
    fn write_ec_flash(&self, addr: u32, data: &[u8], dry_run: bool) -> EcResult<()> {
        // TODO: Use flash info to help guide ideal chunk size
        // let info = EcRequestFlashInfo {}.send_command(self)?;
        //let chunk_size = ((0x80 / info.write_ideal_size) * info.write_ideal_size) as usize;

        let chunk_size = 0x80;

        let chunks = data.len() / chunk_size;
        println!(
            "  Will write flash from 0x{:X} to 0x{:X} in {}*{}B chunks",
            addr,
            data.len(),
            chunks,
            chunk_size
        );
        for chunk_no in 0..chunks {
            let offset = chunk_no * chunk_size;
            // Current chunk might be smaller if it's the last
            let cur_chunk_size = std::cmp::min(chunk_size, data.len() - chunk_no * chunk_size);

            if chunk_no % 100 == 0 {
                if chunk_no != 0 {
                    println!();
                }
                print!("  Chunk {:>4}: X", chunk_no);
            } else {
                print!("X");
            }

            let chunk = &data[offset..offset + cur_chunk_size];
            if !dry_run {
                let res = self.write_ec_flash_chunk(addr + offset as u32, chunk);
                if let Err(err) = res {
                    println!("  Failed to write chunk: {:?}", err);
                    return Err(err);
                }
            }
        }
        println!();

        Ok(())
    }

    fn write_ec_flash_chunk(&self, offset: u32, data: &[u8]) -> EcResult<()> {
        assert!(data.len() <= 0x80); // TODO: I think this is EC_LPC_HOST_PACKET_SIZE - size_of::<EcHostResponse>()