add rsdp addr

nel_os_bootloader/src/main.rs

@@ -126,6 +126,15 @@ fn get_frame_buffer() -> gop::FrameBuffer {
     }
 }
 
+fn get_rsdp() -> u64 {
+    uefi::system::with_config_table(move |c| {
+        c.iter()
+            .find(|config| config.guid == uefi::table::cfg::ACPI_GUID)
+            .map(|config| config.address as u64)
+            .expect("Failed to find RSDP in config table")
+    })
+}
+
 #[entry]
 fn main() -> Status {
     uefi::helpers::init().unwrap();
@@ -145,6 +154,8 @@ fn main() -> Status {
 
     let frame_buffer = get_frame_buffer();
 
+    let rsdp = get_rsdp();
+
     let size = uefi::boot::memory_map(MemoryType::LOADER_DATA)
         .unwrap()
         .len()
@@ -183,6 +194,7 @@ fn main() -> Status {
     entry(&nel_os_common::BootInfo {
         usable_memory,
         frame_buffer,
+        rsdp,
     });
 
     hlt_loop();

nel_os_common/src/lib.rs

@@ -8,4 +8,5 @@ pub mod memory;
 pub struct BootInfo {
     pub usable_memory: UsableMemory,
     pub frame_buffer: FrameBuffer,
+    pub rsdp: u64,
 }

nel_os_kernel/Cargo.lock

@@ -22,6 +22,17 @@ dependencies = [
  "libm",
 ]
 
+[[package]]
+name = "acpi"
+version = "5.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94476c7ef97af4c4d998b3f422c1b01d5211aad57c80ed200baf148d1f1efab6"
+dependencies = [
+ "bit_field",
+ "bitflags 2.9.1",
+ "log",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.5.0"
@@ -89,6 +100,12 @@ dependencies = [
  "scopeguard",
 ]
 
+[[package]]
+name = "log"
+version = "0.4.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13dc2df351e3202783a1fe0d44375f7295ffb4049267b0f3018346dc122a1d94"
+
 [[package]]
 name = "nel_os_common"
 version = "0.1.0"
@@ -98,6 +115,7 @@ name = "nel_os_kernel"
 version = "0.1.0"
 dependencies = [
  "ab_glyph",
+ "acpi",
  "lazy_static",
  "linked_list_allocator",
  "nel_os_common",

nel_os_kernel/Cargo.toml

@@ -12,3 +12,4 @@ 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"
+acpi = "5.2.0"