Initial commit

2023-02-26 21:12:51 +01:00
commit d2ec37332f
69 changed files with 58831 additions and 0 deletions
--- a/code/ap_boot_real_prepare.asm
+++ b/code/ap_boot_real_prepare.asm
@ -0,0 +1,13 @@
+; This section has to be compiled for 16-bit real mode
+boot_ap:
+    ; Disable interrupts
+    cli
+
+    ; Enable A20 address line
+    in al, 0x92
+    or al, 2
+    out 0x92, al
+
+    ; Load the temporary GDT required for the far jump into protected mode.
+    lgdt [tmp_gdt_desc - boot_ap + 0x8000]
+