Some ACPI work

Cargo.lock

@@ -2,6 +2,17 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "acpi"
+version = "5.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e42f25ac5fa51f4188d14baf8f387a97dcd8639644b2f3df948bf5f6dd7d6fa"
+dependencies = [
+ "bit_field",
+ "bitflags 2.8.0",
+ "log",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.4.0"
@@ -63,6 +74,7 @@ checksum = "875488b8711a968268c7cf5d139578713097ca4635a76044e8fe8eedf831d07e"
 name = "gila"
 version = "0.2.2"
 dependencies = [
+ "acpi",
  "flagset",
  "limine",
  "once_cell",
@@ -90,6 +102,12 @@ dependencies = [
  "scopeguard",
 ]
 
+[[package]]
+name = "log"
+version = "0.4.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30bde2b3dc3671ae49d8e2e9f044c7c005836e7a023ee57cffa25ab82764bb9e"
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"

Cargo.toml

@@ -4,6 +4,7 @@ version = "0.2.2"
 edition = "2024"
 
 [dependencies]
+acpi = "5.1.0"
 flagset = "0.4.6"
 limine = "0.3.1"
 once_cell = { version = "1.20.3", default-features = false, features = ["alloc", "critical-section"] }

src/arch/x86_64/acpi.rs

@@ -0,0 +1 @@
+// TODO: Implement per-arch memory handlers for ACPI memory map regions

src/arch/x86_64/mod.rs

@@ -1,2 +1,3 @@
+pub mod acpi;
 pub mod asm;
 pub mod display;

src/boot.rs

@@ -18,3 +18,6 @@ pub static SMP_REQUEST: SmpRequest = limine::request::SmpRequest::new();
 #[used]
 #[unsafe(link_section = ".requests")]
 pub static FILE_REQUEST: KernelFileRequest = limine::request::KernelFileRequest::new();
+#[used]
+#[unsafe(link_section = ".requests")]
+pub static RSDP_REQUEST: RsdpRequest = limine::request::RsdpRequest::new();

src/main.rs

@@ -12,12 +12,14 @@ mod params;
 mod process;
 mod resources;
 
-use crate::arch::current::*;
+use crate::arch::current;
 use crate::boot::*;
 use crate::log::*;
-use crate::memory::alloc::*;
+use crate::memory::alloc::{self, format, string::String, vec};
 use crate::params::*;
 
+use acpi::{AcpiResult, AcpiTable};
+
 #[unsafe(no_mangle)]
 unsafe extern "C" fn main() -> ! {
     // Assert supported bootloader version
@@ -47,54 +49,52 @@ unsafe extern "C" fn main() -> ! {
             if log_device_list.contains(&"serial") {
                 // Append serial console to log subs
             }
-            log(LogLevel::Info, "Configured kernel logging devices.")
-        }
-
-        {
-            let kernel_cmdline_string =
-                string::String::from_utf8_lossy(kernel_file_response.file().cmdline());
-            log(
-                LogLevel::Info,
-                &format!("Kernel cmdline: {}", kernel_cmdline_string),
-            );
-            drop(kernel_cmdline_string);
-        }
-
-        {
-            let kernel_path = string::String::from_utf8_lossy(kernel_file_response.file().path());
-            log(
-                LogLevel::Info,
-                &format!("Kernel file path: {}", kernel_path),
-            );
-            drop(kernel_path);
+            log(LogLevel::Info, "Boot: Configured kernel logging devices.")
         }
+        log(
+            LogLevel::Info,
+            &format!(
+                "Boot: Kernel cmdline: {}",
+                String::from_utf8_lossy(kernel_file_response.file().cmdline())
+            ),
+        );
+        log(
+            LogLevel::Info,
+            &format!(
+                "Boot: Kernel file path: {}",
+                String::from_utf8_lossy(kernel_file_response.file().path())
+            ),
+        );
     }
-
-    log(LogLevel::Info, "Log devices configured. Booting `gila`.");
-    log(LogLevel::Info, "Trans Rights!");
+    log(
+        LogLevel::Info,
+        "Boot: Log devices configured. Booting `gila`.",
+    );
+    log(LogLevel::Info, "Boot: Trans Rights!");
 
     let _smp_response = SMP_REQUEST.get_response();
-
     match _smp_response {
         None => log(
             LogLevel::Error,
-            "SMP response not received. Multiprocessing is disabled.",
+            "SMP: bootloader response not received. Multiprocessing is disabled.",
         ),
         Some(resp) => {
             log(
                 LogLevel::Info,
-                "SMP response received. Multiprocessing enabled.",
+                "SMP: bootloader response received. Multiprocessing enabled.",
             );
             log(
                 LogLevel::Info,
-                &format!("{} CPUs found.", resp.cpus().len()),
+                &format!("SMP: {} CPUs found.", resp.cpus().len()),
             );
         }
     }
 
+    let _rsdp_response = RSDP_REQUEST.get_response();
+
     loop {
         unsafe {
-            asm::halt();
+            arch::current::asm::halt();
         }
     }
 }

src/process.rs

@@ -33,6 +33,16 @@ pub struct Process {
     semaphor_wait: Option<u32>,
 }
 
+#[allow(dead_code)]
+pub unsafe fn context_switch() -> ! {
+    #[allow(unused_unsafe)]
+    unsafe {
+        loop {
+            crate::arch::current::asm::halt();
+        }
+    }
+}
+
 #[allow(dead_code)]
 pub enum ProcessState {
     Running,