feat: cleanup init code, small other refactors

kernel/libk/kprint.c

@@ -9,12 +9,13 @@
 #include <myke/libk/kprint.h>
 #include <myke/tasks/task.h>
 #include <myke/util/stream.h>
+#include <myke/util/init.h>
 
 #define MAX_HANDLERS 8
 #define STREAM_SIZE (32*1024)
 #define PRINT_BUFFER_SIZE 64
 
-stream_t *kprint_stream;
+stream_t *kprint_stream = NULL;
 
 kprint_handler handlers[MAX_HANDLERS] = {0};
 
@@ -29,7 +30,11 @@ void kprint_register(kprint_handler handler) {
 }
 
 void kprint(const char *msg) {
-    stream_write(kprint_stream, (const uint8_t *) msg, strlen(msg));
+    if (kprint_stream == NULL) {
+        kprint_sync(msg);
+    } else {
+        stream_write(kprint_stream, (const uint8_t *) msg, strlen(msg));
+    }
 }
 
 void kprint_internal(const char *msg) {
@@ -65,4 +70,10 @@ void att_noreturn kprint_task(void *_) {
 
 void kprint_start_task() {
     task_spawn(kprint_task, NULL, "kprint");
-}
+}
+
+INIT_FUNCTION(100) = {
+        .name = "kprint-task",
+        .stage = INIT_STAGE_PRE_TASKING,
+        .init = kprint_start_task,
+};