From 93bf62580a68533dc8252b9a2a055c02f34ecb67 Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Thu, 24 Mar 2022 09:38:08 -0700
Subject: Modularized

---
 kernel/sys/kernel.S | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 kernel/sys/kernel.S

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

diff --git a/kernel/sys/kernel.S b/kernel/sys/kernel.S
new file mode 100644
index 0000000..71b22a1
--- /dev/null
+++ b/kernel/sys/kernel.S
@@ -0,0 +1,32 @@
+.section ".text.kernel"
+
+.include "macros.inc"
+
+.globl kernel_main
+kernel_main:
+	bl sysinit
+	bl status
+	ldr r2, =ttbr_msg
+	mov r0, #23
+	mov r1, #0
+	mov r3, #0xFF00
+	bl draw_cstring
+	// Initialize System Cycle Counter
+	mov r0, #1
+	mcr p15, 0, r0, c9, c14, 0
+	mov r0, #1
+	mcr p15, 0, r0, c9, c12, 0
+	mov r0, #0x80000000
+	mcr p15, 0, r0, c9, c12, 1
+
+	// Intentional undefined instruction
+	// .word 0xf7f0a000
+	cpsie ai, #0x10
+	svc #2 // Start scheduling!
+2:
+	wfe
+	b 2b
+
+.section .data
+ttbr_msg:
+	.asciz "MMU Initialized!"
-- 
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