Add power management watchdog,

rework interrupts

src/lib.rs

@@ -1,12 +1,15 @@
 #![no_std]
 #![allow(clippy::missing_safety_doc)]
 use core::{
+    arch::asm,
     panic::PanicInfo,
     ptr::{read_volatile, write_volatile},
 };
 
 use heap::Heap;
 
+pub static PERIPHERAL_BASE: u32 = 0x3F00_0000;
+
 unsafe extern "C" {
     unsafe static mut __heap_start: u8;
     unsafe static mut __heap_end: u8;
@@ -53,6 +56,7 @@ pub mod configuration;
 pub mod framebuffer;
 pub mod irq_interrupt;
 pub mod mailbox;
+pub mod power_management;
 pub mod timer;
 
 pub fn mmio_read(address: u32) -> u32 {
@@ -62,3 +66,15 @@ pub fn mmio_read(address: u32) -> u32 {
 pub fn mmio_write(address: u32, data: u32) {
     unsafe { write_volatile(address as *mut u32, data) }
 }
+
+pub fn get_current_el() -> u64 {
+    let el: u64;
+    unsafe {
+        asm!(
+            "mrs {el}, CurrentEL",
+            el = out(reg) el,
+            options(nomem, nostack, preserves_flags)
+        );
+    }
+    el >> 2
+}