stos: bpal: Add loader perf stats

Signed-off-by: Chloe M. <chloe@mensia.org>

paw/stos/ke/bpal/proto/limine.c

@@ -20,14 +20,32 @@ static volatile struct limine_bootloader_info_request LoaderInfoReq = {
     .revision = 0
 };
 
+/* Bootloader perf information */
+static struct limine_bootloader_performance_response *LoaderPerfResp = NULL;
+static struct limine_bootloader_performance_request LoaderPerReq = {
+    .id = LIMINE_BOOTLOADER_PERFORMANCE_REQUEST_ID,
+    .revision = 0
+};
+
 VOID
 KeBpalLimineInit(VOID)
 {
     LoaderInfoResp = LoaderInfoReq.response;
+    LoaderPerfResp = LoaderPerReq.response;
 
     DTRACE(
         "slut handed control by %s %s\n",
         LoaderInfoResp->name,
         LoaderInfoResp->version
     );
+
+    DTRACE(
+        "loader took %d usec\n",
+        LoaderPerfResp->init_usec
+    );
+
+    DTRACE(
+        "handoff took %d usec\n",
+        LoaderPerfResp->exec_usec
+    );
 }