From 8b62cb8210a955bf9696b8d151d51fc6274732cd Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Thu, 29 May 2025 01:01:52 -0400
Subject: kernel: uacpi: Implement kernel nsec func

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/dev/acpi/uacpi.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/sys/dev/acpi/uacpi.c b/sys/dev/acpi/uacpi.c
index 03d0ecf..612f23b 100644
--- a/sys/dev/acpi/uacpi.c
+++ b/sys/dev/acpi/uacpi.c
@@ -513,9 +513,18 @@ uacpi_u64
 uacpi_kernel_get_nanoseconds_since_boot(void)
 {
     static uacpi_u64 time = 0;
+    static struct timer tmr = {0};
+    tmrr_status_t tmr_error;
+
+    if (time == 0) {
+        tmr_error = req_timer(TIMER_GP, &tmr);
+        if (tmr_error != TMRR_SUCCESS) {
+            time += 1000000;
+            return time;
+        }
+    }
 
-    /* TODO */
-    time += 1000000;
+    time = tmr.get_time_nsec();
     return time;
 }
 
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