mec init: Fail if ioperm didn't succeed

Signed-off-by: Daniel Schaefer <[email protected]>

Author: JohnAZoidberg

framework_lib/src/chromium_ec/portio_mec.rs

@@ -22,12 +22,20 @@ const _MEC_LPC_DATA_REGISTER1: u16 = 0x0805;
 const MEC_LPC_DATA_REGISTER2: u16 = 0x0806;
 const _MEC_LPC_DATA_REGISTER3: u16 = 0x0807;
 
-pub fn init() {
+pub fn init() -> bool {
     #[cfg(target_os = "linux")]
     unsafe {
-        ioperm(EC_LPC_ADDR_HOST_DATA as u64, 8, 1);
-        ioperm(MEC_LPC_ADDRESS_REGISTER0 as u64, 10, 1);
+        println!("Init MEC");
+        let res = ioperm(EC_LPC_ADDR_HOST_DATA as u64, 8, 1);
+        if res != 0 {
+            error!("ioperm failed. portio driver is likely block by Linux kernel lockdown mode");
+            return false;
+        }
+        let res = ioperm(MEC_LPC_ADDRESS_REGISTER0 as u64, 10, 1);
+        assert_eq!(res, 0);
     }
+
+    true
 }
 
 // TODO: Create a wrapper