Function read_ec_version

framework_lib/src/ec_binary.rs:149–193

Parse version information from EC FW image buffer

(data: &[u8], ro: bool)

/// Parse version information from EC FW image buffer
pub fn read_ec_version(data: &[u8], ro: bool) -> Option<ImageVersionData> {
    // First try to find the legacy EC version
    let offset = if ro {
        EC_RO_VER_OFFSET
    } else {
        EC_RW_VER_OFFSET
    };
    let (v, _) = _ImageVersionData::read_from_prefix(data.get(offset..)?).ok()?;
    if v.cookie1.get() != CROS_EC_IMAGE_DATA_COOKIE1 {
        debug!(
            "Failed to find legacy Cookie 1. Found: {:X?}",
            v.cookie1.get()
        );
    } else if v.cookie2.get() != CROS_EC_IMAGE_DATA_COOKIE2 {
        debug!(
            "Failed to find legacy Cookie 2. Found: {:X?}",
            v.cookie2.get()
        );
    } else {
        return parse_ec_version(&v);
    }

    // If not present, find Zephyr EC version
    let offset_zephyr = if ro {
        EC_RO_VER_OFFSET_ZEPHYR
    } else {
        EC_RW_VER_OFFSET_ZEPHYR
    };
    let (v, _) = _ImageVersionData::read_from_prefix(data.get(offset_zephyr..)?).ok()?;
    if v.cookie1.get() != CROS_EC_IMAGE_DATA_COOKIE1 {
        debug!(
            "Failed to find Zephyr Cookie 1. Found: {:X?}",
            v.cookie1.get()
        );
    } else if v.cookie2.get() != CROS_EC_IMAGE_DATA_COOKIE2 {
        debug!(
            "Failed to find Zephyr Cookie 2. Found: {:X?}",
            v.cookie2.get()
        );
    } else {
        return parse_ec_version(&v);
    }

    None
}

#[cfg(test)]
mod tests {