From 0d551d712c098d6ebb75512340d7503da98361b4 Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Fri, 21 Jan 2022 18:52:25 -0700
Subject: Got some scheduling

---
 src/sys/kernel.S | 32 +++++++++++++++-----------------
 1 file changed, 15 insertions(+), 17 deletions(-)

(limited to 'src/sys/kernel.S')

diff --git a/src/sys/kernel.S b/src/sys/kernel.S
index d9819a2..b76df62 100644
--- a/src/sys/kernel.S
+++ b/src/sys/kernel.S
@@ -3,24 +3,22 @@
 .globl kernel_main
 kernel_main:
 	bl sysinit
-	///https://wiki.osdev.org/ARM_Paging
-	// Query the ID_MMFR0 register
-	mrc p15, 0, r0, c0, c1, 4
-	bl uart_hexn
-	// Switch to user mode
+	// ///https://wiki.osdev.org/ARM_Paging
+	// // Query the ID_MMFR0 register
+	// mrc p15, 0, r0, c0, c1, 4
+	// bl uart_hexn
+	// // Switch to user mode
+	// cps #0x10
+	// // Intentional undefined instruction
+	// //.word 0xf7f0a000
+	// // This will fail in user mode
+	// mrc p15, 3, r0, c15, c0, 0
+	// // Supervisor Call #1 - Does nothing special
+	// svc #1
+	// mrs r0, cpsr
+	// bl uart_hexn
 	cps #0x10
-	// Intentional undefined instruction
-	//.word 0xf7f0a000
-	// This will fail in user mode
-	mrc p15, 3, r0, c15, c0, 0
-	// Supervisor Call #1 - Does nothing special
-	svc #1
-	mrs r0, cpsr
-	bl uart_hexn
-	// Supervisor Call #1 - Returns in supervisor mode
-	svc #0
-	mrs r0, cpsr
-	bl uart_hexn
+	svc #2 // Start scheduling!
 1:
 	wfe
 	b 1b
-- 
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