cpuid

nel_os_kernel/Cargo.lock

@@ -101,6 +101,7 @@ dependencies = [
  "lazy_static",
  "linked_list_allocator",
  "nel_os_common",
+ "raw-cpuid 11.5.0",
  "spin 0.10.0",
  "uart_16550",
  "x86_64",
@@ -124,6 +125,15 @@ dependencies = [
  "bitflags 1.3.2",
 ]
 
+[[package]]
+name = "raw-cpuid"
+version = "11.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c6df7ab838ed27997ba19a4664507e6f82b41fe6e20be42929332156e5e85146"
+dependencies = [
+ "bitflags 2.9.1",
+]
+
 [[package]]
 name = "rustversion"
 version = "1.0.21"
@@ -194,7 +204,7 @@ checksum = "2781db97787217ad2a2845c396a5efe286f87467a5810836db6d74926e94a385"
 dependencies = [
  "bit_field",
  "bitflags 1.3.2",
- "raw-cpuid",
+ "raw-cpuid 10.7.0",
 ]
 
 [[package]]

nel_os_kernel/Cargo.toml

@@ -11,3 +11,4 @@ x86_64 = "0.15.2"
 nel_os_common = { path = "../nel_os_common" }
 linked_list_allocator = "0.9.1"
 ab_glyph = { version = "0.2", features = ["libm"], default-features = false }
+raw-cpuid = "11.5.0"

nel_os_kernel/src/cpuid.rs

@@ -0,0 +1,18 @@
+use alloc::string::{String, ToString};
+use raw_cpuid::CpuId;
+
+pub fn get_vendor_id() -> String {
+    let cpuid = CpuId::new();
+    if let Some(vf) = cpuid.get_vendor_info() {
+        return vf.as_str().to_string();
+    }
+    "Unknown".to_string()
+}
+
+pub fn get_brand() -> String {
+    let cpuid = CpuId::new();
+    if let Some(brand) = cpuid.get_processor_brand_string() {
+        return brand.as_str().to_string();
+    }
+    "Unknown".to_string()
+}

nel_os_kernel/src/main.rs

@@ -5,6 +5,7 @@ extern crate alloc;
 
 pub mod allocator;
 pub mod constant;
+pub mod cpuid;
 pub mod graphics;
 pub mod logging;
 pub mod memory;
@@ -17,7 +18,7 @@ use core::arch::asm;
 use core::panic::PanicInfo;
 use core::ptr::addr_of;
 
-use x86_64::{structures::paging::OffsetPageTable, VirtAddr};
+use x86_64::{registers::control::Cr3, structures::paging::OffsetPageTable, VirtAddr};
 
 use crate::{
     constant::{BANNER, KERNEL_STACK_SIZE, PKG_VERSION},
@@ -120,7 +121,19 @@ pub extern "sysv64" fn main(boot_info: &nel_os_common::BootInfo) {
 
     FRAME_BUFFER.lock().replace(frame_buffer);
 
-    println!("{} v{}", BANNER, PKG_VERSION);
+    println!("");
+    info!("Kernel initialized successfully");
+
+    info!("Kernel version: {}", PKG_VERSION);
+    info!(
+        "Level 4 page table at {:#x}",
+        Cr3::read().0.start_address().as_u64()
+    );
+    info!(
+        "Memory bitmap: {} -> {}",
+        bitmap_table.start, bitmap_table.end
+    );
+    info!("CPU: {} {}", cpuid::get_vendor_id(), cpuid::get_brand());
     info!(
         "Usable memory: {}MiB ({:.1}GiB)",
         usable_frame * 4 / 1024,