common: Implement Mx25l::erase_all().

diff --git a/src/common/mx25l.rs b/src/common/mx25l.rs
index a6ad39550e9cbb9d9df7b1c0236e2e7228fabb51..388d31172497b858c86c2ac36731156d1d16e2ed 100644 (file)
--- a/src/common/mx25l.rs
+++ b/src/common/mx25l.rs
@@ -39,6 +39,7 @@ enum Command {
     RDSR = 0x05,
     WREN = 0x06,
     SE   = 0x20,
+    CE   = 0x60,
     RDID = 0x9f,
 }
 
@@ -72,6 +73,17 @@ impl Mx25l {
         })
     }
 
+    pub fn erase_all(&self) {
+        self.write_enable();
+
+        self.with_selected(|| {
+            spi::tx8(spi::SPI0, Command::CE as u8);
+        });
+
+        while self.write_in_progress() {
+        }
+    }
+
     pub fn erase_sector(&self, address: usize) -> Result<(), Error> {
         if (address & (SECTOR_SIZE - 1)) != 0 {
             return Err(Error::UnalignedAddress);