From bc674eb4eb59a2d62d6234ccbe282448ab070218 Mon Sep 17 00:00:00 2001
From: Martin Petr <martinpetrnp@gmail.com>
Date: Thu, 20 Nov 2025 16:24:39 +0100
Subject: [PATCH] Add bios time module

---
 src/os/src/kernel/modules/bios/bios.kmod.ts |  1 +
 src/os/src/kernel/modules/bios/config.ts    |  2 +
 src/os/src/kernel/modules/bios/time.ts      | 96 +++++++++++++++++++++
 src/os/src/kernel/panic.ts                  |  2 +-
 src/os/src/lib/libts/port.ts                |  7 ++
 src/os/src/lib/libts/string.ts              | 11 +++
 src/os/src/lib/sys/date.ts                  |  5 ++
 7 files changed, 123 insertions(+), 1 deletion(-)
 create mode 100644 src/os/src/kernel/modules/bios/bios.kmod.ts
 create mode 100644 src/os/src/kernel/modules/bios/config.ts
 create mode 100644 src/os/src/kernel/modules/bios/time.ts
 create mode 100644 src/os/src/lib/libts/port.ts
 create mode 100644 src/os/src/lib/libts/string.ts
 create mode 100644 src/os/src/lib/sys/date.ts

diff --git a/src/os/src/kernel/modules/bios/bios.kmod.ts b/src/os/src/kernel/modules/bios/bios.kmod.ts
new file mode 100644
index 0000000..2d18873
--- /dev/null
+++ b/src/os/src/kernel/modules/bios/bios.kmod.ts
@@ -0,0 +1 @@
+export * from "./time"
\ No newline at end of file
diff --git a/src/os/src/kernel/modules/bios/config.ts b/src/os/src/kernel/modules/bios/config.ts
new file mode 100644
index 0000000..868bf33
--- /dev/null
+++ b/src/os/src/kernel/modules/bios/config.ts
@@ -0,0 +1,2 @@
+export const CFG_KMOD_BIOS_TIME_CMOS_ADDR = 0x70;
+export const CFG_KMOD_BIOS_TIME_CMOS_DATA_ADDR = 0x71;
diff --git a/src/os/src/kernel/modules/bios/time.ts b/src/os/src/kernel/modules/bios/time.ts
new file mode 100644
index 0000000..0ce7f25
--- /dev/null
+++ b/src/os/src/kernel/modules/bios/time.ts
@@ -0,0 +1,96 @@
+import { portin, portout } from "../../../lib/libts/port";
+import { padStart } from "../../../lib/libts/string";
+import {
+  CFG_KMOD_BIOS_TIME_CMOS_ADDR,
+  CFG_KMOD_BIOS_TIME_CMOS_DATA_ADDR,
+} from "./config";
+
+export function kmod_bios_time_getCentury(): number {
+  const val = 0x32;
+
+  portout(CFG_KMOD_BIOS_TIME_CMOS_ADDR, val);
+  const data = portin(CFG_KMOD_BIOS_TIME_CMOS_DATA_ADDR);
+
+  return (data & 0x0f) + ((data >> 4) & 0x0f) * 10;
+}
+
+export function kmod_bios_time_getYear(): number {
+  const val = 0x09;
+
+  portout(CFG_KMOD_BIOS_TIME_CMOS_ADDR, val);
+  const data = portin(CFG_KMOD_BIOS_TIME_CMOS_DATA_ADDR);
+
+  return (data & 0x0f) + ((data >> 4) & 0x0f) * 10;
+}
+
+export function kmod_bios_time_getMonth(): number {
+  const val = 0x08;
+
+  portout(CFG_KMOD_BIOS_TIME_CMOS_ADDR, val);
+  const data = portin(CFG_KMOD_BIOS_TIME_CMOS_DATA_ADDR);
+
+  return (data & 0x0f) + ((data >> 4) & 0x0f) * 10;
+}
+
+export function kmod_bios_time_getDay(): number {
+  const val = 0x07;
+
+  portout(CFG_KMOD_BIOS_TIME_CMOS_ADDR, val);
+  const data = portin(CFG_KMOD_BIOS_TIME_CMOS_DATA_ADDR);
+
+  return (data & 0x0f) + ((data >> 4) & 0x0f) * 10;
+}
+
+export function kmod_bios_time_getHours(): number {
+  const val = 0x04;
+
+  portout(CFG_KMOD_BIOS_TIME_CMOS_ADDR, val);
+  const data = portin(CFG_KMOD_BIOS_TIME_CMOS_DATA_ADDR);
+
+  return (data & 0x0f) + ((data >> 4) & 0x0f) * 10;
+}
+
+export function kmod_bios_time_getMinutes(): number {
+  const val = 0x02;
+
+  portout(CFG_KMOD_BIOS_TIME_CMOS_ADDR, val);
+  const data = portin(CFG_KMOD_BIOS_TIME_CMOS_DATA_ADDR);
+
+  return (data & 0x0f) + ((data >> 4) & 0x0f) * 10;
+}
+
+export function kmod_bios_time_getSeconds(): number {
+  const val = 0x00;
+
+  portout(CFG_KMOD_BIOS_TIME_CMOS_ADDR, val);
+  const data = portin(CFG_KMOD_BIOS_TIME_CMOS_DATA_ADDR);
+
+  return (data & 0x0f) + ((data >> 4) & 0x0f) * 10;
+}
+
+export function kmod_bios_time_getTimestamp(): string {
+  const century = kmod_bios_time_getCentury();
+  const year = kmod_bios_time_getYear();
+  const month = kmod_bios_time_getMonth();
+  const day = kmod_bios_time_getDay();
+  const hours = kmod_bios_time_getHours();
+  const minutes = kmod_bios_time_getMinutes();
+  const seconds = kmod_bios_time_getSeconds();
+
+  return (
+    century.toString() +
+    year.toString() +
+    "-" +
+    padStart(month.toString(), 2, "0") +
+    "-" +
+    padStart(day.toString(), 2, "0") +
+    "T" +
+    padStart(hours.toString(), 2, "0") +
+    ":" +
+    padStart(minutes.toString(), 2, "0") +
+    ":" +
+    padStart(seconds.toString(), 2, "0") +
+    +".000" +
+    "Z"
+  );
+}
diff --git a/src/os/src/kernel/panic.ts b/src/os/src/kernel/panic.ts
index 98bba40..fb166c9 100644
--- a/src/os/src/kernel/panic.ts
+++ b/src/os/src/kernel/panic.ts
@@ -1,7 +1,7 @@
 import {
   kmod_graphics_vga_clear,
   kmod_graphics_vga_writeChar,
-} from "./modules/graphics/vga";
+} from "./modules/graphics/graphics.kmod";
 
 export function kpanic(reason?: string) {
   kmod_graphics_vga_clear();
diff --git a/src/os/src/lib/libts/port.ts b/src/os/src/lib/libts/port.ts
new file mode 100644
index 0000000..1987513
--- /dev/null
+++ b/src/os/src/lib/libts/port.ts
@@ -0,0 +1,7 @@
+export function portin(port: number): number {
+  return $ptin(port);
+}
+
+export function portout(port: number, value: number): void {
+  $ptout(port, value);
+}
diff --git a/src/os/src/lib/libts/string.ts b/src/os/src/lib/libts/string.ts
new file mode 100644
index 0000000..ecc4df3
--- /dev/null
+++ b/src/os/src/lib/libts/string.ts
@@ -0,0 +1,11 @@
+export function padStart(
+  str: string,
+  targetLength: number,
+  padString: string
+): string {
+  while (str.length < targetLength) {
+    str = padString + str;
+  }
+
+  return str;
+}
diff --git a/src/os/src/lib/sys/date.ts b/src/os/src/lib/sys/date.ts
new file mode 100644
index 0000000..b16302d
--- /dev/null
+++ b/src/os/src/lib/sys/date.ts
@@ -0,0 +1,5 @@
+import { kmod_bios_time_getTimestamp } from "../../kernel/modules/bios/time";
+
+export function getDate(): Date {
+  return new Date(kmod_bios_time_getTimestamp());
+}