kern: Initial uACPI integration

kernel/.gitignore

@@ -2,5 +2,7 @@
 /cc-runtime*
 /c/flanterm
 /c/printf
+/c/uacpi
+/uacpi-repository
 /bin
 /obj

kernel/GNUmakefile

@@ -174,7 +174,7 @@ clean:
 # Remove everything built and generated including downloaded dependencies.
 .PHONY: distclean
 distclean: clean
-	rm -rf freestnd-c-hdrs cc-runtime c/flanterm c/printf
+	rm -rf freestnd-c-hdrs cc-runtime c/flanterm c/printf c/uacpi uacpi-repository
 
 # Install the final built executable to its final on-root location.
 .PHONY: install

kernel/get-deps

@@ -88,3 +88,13 @@ download_by_hash \
     https://github.com/eyalroz/printf/raw/2d75fef6c605e699d2643267cbaeaaa49b0a2635/src/printf/printf.h \
     c/printf/printf.h \
     f63b84650f29394fd1bc6f6dce889d11570fcc152c5d512bfe6b68174c5aed56
+
+# 2.0.0
+clone_repo_commit \
+    https://github.com/uACPI/uACPI.git \
+    uacpi-repository \
+    4ab3a78006a930e2cda5a92f33fc84e1ec6b4a3d
+rm -rf c/uacpi
+mkdir -p c/uacpi
+cp -rp uacpi-repository/include/uacpi/* c/uacpi/
+cp -rp uacpi-repository/source/* c/uacpi/

kernel/modules/acpi/acpi.v

@@ -85,6 +85,18 @@ pub fn initialise() {
 	}
 
 	madt_init()
+
+	mut uacpi_status := UACPIStatus.ok
+
+	uacpi_status = C.uacpi_initialize(0)
+	if uacpi_status != UACPIStatus.ok {
+		panic('uacpi_initialize(): ${C.uacpi_status_to_string(uacpi_status)}')
+	}
+
+	uacpi_status = C.uacpi_namespace_load()
+	if uacpi_status != UACPIStatus.ok {
+		panic('uacpi_namespace_load(): ${C.uacpi_status_to_string(uacpi_status)}')
+	}
 }
 
 pub fn find_sdt(signature string, index int) !voidptr {