Add more subcommands to tool

tool/src/legacy.rs

@@ -0,0 +1,68 @@
+use crate::{
+    Error,
+    Pmc,
+    SuperIo,
+    Timeout,
+};
+
+pub struct EcLegacy<T: Timeout> {
+    pub pmc: Pmc<T>,
+}
+
+impl<T: Timeout> EcLegacy<T> {
+    /// Probes for a compatible EC
+    pub unsafe fn new(primary: bool, timeout: T) -> Result<Self, Error> {
+        let mut sio = SuperIo::new(if primary { 0x2E } else { 0x4E });
+
+        let id =
+            (sio.read(0x20) as u16) << 8 |
+            (sio.read(0x21) as u16);
+
+        match id {
+            0x5570 | 0x8587 => (),
+            _ => return Err(Error::SuperIoId(id)),
+        }
+
+        //TODO: is there a good way to probe?
+
+        Ok(Self {
+            pmc: Pmc::new(if primary { 0x62 } else { 0x68 }, timeout),
+        })
+    }
+
+    pub unsafe fn project(&mut self, data: &mut [u8]) -> Result<usize, Error> {
+        let mut i = 0;
+        self.pmc.command(0x92)?;
+        while i < data.len() {
+            data[i] = self.pmc.read()?;
+            if data[i] == b'$' {
+                break;
+            }
+            i += 1;
+        }
+        Ok(i)
+    }
+
+    pub unsafe fn version(&mut self, data: &mut [u8]) -> Result<usize, Error> {
+        // Prepend `1.` to version string
+        let mut i = 0;
+        if i < data.len() {
+            data[i] = b'1';
+            i += 1;
+        }
+        if i < data.len() {
+            data[i] = b'.';
+            i += 1;
+        }
+
+        self.pmc.command(0x93)?;
+        while i < data.len() {
+            data[i] = self.pmc.read()?;
+            if data[i] == b'$' {
+                break;
+            }
+            i += 1;
+        }
+        Ok(i)
+    }
+}