runtime: get rid of config_dummy.rs. NFC.

Use the same strategy as elsewhere.

artiq/firmware/runtime/config.rs

@@ -1,12 +1,14 @@
-use core::str;
-use std::btree_map::BTreeMap;
-use byteorder::{ByteOrder, BigEndian};
-use board::{mem, csr, cache, spiflash};
+#[cfg(has_spiflash)]
+mod imp {
+    use core::str;
+    use std::btree_map::BTreeMap;
+    use byteorder::{ByteOrder, BigEndian};
+    use board::{mem, csr, cache, spiflash};
 
-const ADDR: usize = mem::FLASH_BOOT_ADDRESS + 0x80000 /* max runtime size */;
-const SIZE: usize = csr::CONFIG_SPIFLASH_SECTOR_SIZE as usize;
+    const ADDR: usize = mem::FLASH_BOOT_ADDRESS + 0x80000 /* max runtime size */;
+    const SIZE: usize = csr::CONFIG_SPIFLASH_SECTOR_SIZE as usize;
 
-mod lock {
+    mod lock {
         use core::slice;
         use core::sync::atomic::{AtomicUsize, Ordering};
 
@@ -33,22 +35,22 @@ mod lock {
                 LOCKED.store(0, Ordering::SeqCst)
             }
         }
-}
+    }
 
-pub use self::lock::Lock;
+    use self::lock::Lock;
 
-struct Iter<'a> {
+    struct Iter<'a> {
         data:   &'a [u8],
         offset: usize
-}
+    }
 
-impl<'a> Iter<'a> {
+    impl<'a> Iter<'a> {
         fn new(data: &'a [u8]) -> Iter<'a> {
             Iter { data: data, offset: 0 }
         }
-}
+    }
 
-impl<'a> Iterator for Iter<'a> {
+    impl<'a> Iterator for Iter<'a> {
         type Item = Result<(&'a [u8], &'a [u8]), ()>;
 
         fn next(&mut self) -> Option<Self::Item> {
@@ -82,9 +84,9 @@ impl<'a> Iterator for Iter<'a> {
                 }
             }
         }
-}
+    }
 
-pub fn read<F: FnOnce(Result<&[u8], ()>) -> R, R>(key: &str, f: F) -> R {
+    pub fn read<F: FnOnce(Result<&[u8], ()>) -> R, R>(key: &str, f: F) -> R {
         f(Lock::take().and_then(|lock| {
             let mut iter = Iter::new(lock.data());
             let mut value = &[][..];
@@ -97,15 +99,15 @@ pub fn read<F: FnOnce(Result<&[u8], ()>) -> R, R>(key: &str, f: F) -> R {
             }
             Ok(value)
         }))
-}
+    }
 
-pub fn read_str<F: FnOnce(Result<&str, ()>) -> R, R>(key: &str, f: F) -> R {
+    pub fn read_str<F: FnOnce(Result<&str, ()>) -> R, R>(key: &str, f: F) -> R {
         read(key, |result| {
             f(result.and_then(|value| str::from_utf8(value).map_err(|_| ())))
         })
-}
+    }
 
-fn append_at(mut offset: usize, key: &[u8], value: &[u8]) -> Result<usize, ()> {
+    fn append_at(mut offset: usize, key: &[u8], value: &[u8]) -> Result<usize, ()> {
         let record_size = 4 + key.len() + 1 + value.len();
         if offset + record_size > SIZE {
             return Err(())
@@ -128,9 +130,9 @@ fn append_at(mut offset: usize, key: &[u8], value: &[u8]) -> Result<usize, ()> {
 
         cache::flush_l2_cache();
         Ok(offset)
-}
+    }
 
-fn compact() -> Result<(), ()> {
+    fn compact() -> Result<(), ()> {
         let lock = Lock::take()?;
 
         let mut items = BTreeMap::new();
@@ -150,9 +152,9 @@ fn compact() -> Result<(), ()> {
             offset = append_at(offset, key, value)?;
         }
         Ok(())
-}
+    }
 
-fn append(key: &str, value: &[u8]) -> Result<(), ()> {
+    fn append(key: &str, value: &[u8]) -> Result<(), ()> {
         let lock = Lock::take()?;
 
         let free_offset = {
@@ -165,9 +167,9 @@ fn append(key: &str, value: &[u8]) -> Result<(), ()> {
 
         append_at(free_offset, key.as_bytes(), value)?;
         Ok(())
-}
+    }
 
-pub fn write(key: &str, value: &[u8]) -> Result<(), ()> {
+    pub fn write(key: &str, value: &[u8]) -> Result<(), ()> {
         match append(key, value) {
             Ok(()) => (),
             Err(()) => {
@@ -176,17 +178,43 @@ pub fn write(key: &str, value: &[u8]) -> Result<(), ()> {
             }
         }
         Ok(())
-}
+    }
 
-pub fn remove(key: &str) -> Result<(), ()> {
+    pub fn remove(key: &str) -> Result<(), ()> {
         write(key, &[])
-}
+    }
 
-pub fn erase() -> Result<(), ()> {
+    pub fn erase() -> Result<(), ()> {
         let _lock = Lock::take()?;
 
         spiflash::erase_sector(ADDR);
         cache::flush_l2_cache();
 
         Ok(())
+    }
 }
+
+#[cfg(not(has_spiflash))]
+mod imp {
+    pub fn read<F: FnOnce(Result<&[u8], ()>) -> R, R>(_key: &str, f: F) -> R {
+        f(Err(()))
+    }
+
+    pub fn read_str<F: FnOnce(Result<&str, ()>) -> R, R>(_key: &str, f: F) -> R {
+        f(Err(()))
+    }
+
+    pub fn write(_key: &str, _value: &[u8]) -> Result<(), ()> {
+        Err(())
+    }
+
+    pub fn remove(_key: &str) -> Result<(), ()> {
+        Err(())
+    }
+
+    pub fn erase() -> Result<(), ()> {
+        Err(())
+    }
+}
+
+pub use self::imp::*;

artiq/firmware/runtime/config_dummy.rs

@@ -1,19 +0,0 @@
-pub fn read<F: FnOnce(Result<&[u8], ()>) -> R, R>(_key: &str, f: F) -> R {
-    f(Err(()))
-}
-
-pub fn read_str<F: FnOnce(Result<&str, ()>) -> R, R>(_key: &str, f: F) -> R {
-    f(Err(()))
-}
-
-pub fn write(_key: &str, _value: &[u8]) -> Result<(), ()> {
-    Err(())
-}
-
-pub fn remove(_key: &str) -> Result<(), ()> {
-    Err(())
-}
-
-pub fn erase() -> Result<(), ()> {
-    Err(())
-}

artiq/firmware/runtime/lib.rs

@@ -34,10 +34,7 @@ macro_rules! borrow_mut {
     })
 }
 
-#[cfg(has_spiflash)]
 mod config;
-#[cfg(not(has_spiflash))]
-#[path="config_dummy.rs"] mod config;
 mod ethmac;
 mod rtio_mgt;