From f1e6e1114aaa2c9be69c456a20da82c877a1c8e3 Mon Sep 17 00:00:00 2001
From: sigsegv7 <ian@vegaa.systems>
Date: Sun, 17 Sep 2023 05:28:14 -0400
Subject: kernel/amd64: Add Local APIC driver

This commit introduces the initial Local APIC driver sources

Signed-off-by: sigsegv7 <ian@vegaa.systems>
---
 sys/firmware/acpi/acpi_madt.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'sys/firmware')

diff --git a/sys/firmware/acpi/acpi_madt.c b/sys/firmware/acpi/acpi_madt.c
index bf3007b..c23f2a4 100644
--- a/sys/firmware/acpi/acpi_madt.c
+++ b/sys/firmware/acpi/acpi_madt.c
@@ -30,6 +30,7 @@
 #include <firmware/acpi/acpi.h>
 #include <firmware/acpi/tables.h>
 #include <machine/ioapic.h>
+#include <machine/lapic.h>
 #include <sys/cdefs.h>
 #include <sys/panic.h>
 #include <sys/syslog.h>
@@ -50,13 +51,20 @@ do_parse(void)
     uint8_t *cur = NULL;
     uint8_t *end = NULL;
 
+    void *ioapic_mmio_base = NULL;
+    void *lapic_mmio_base = NULL;
+
     struct apic_header *hdr = NULL;
     struct ioapic *ioapic = NULL;
-    void *ioapic_mmio_base = NULL;
 
     cur = (uint8_t *)(madt + 1);
     end = (uint8_t *)madt + madt->hdr.length;
 
+    /* Init the Local APIC */
+    lapic_mmio_base = (void *)(uintptr_t)madt->lapic_addr;
+    lapic_set_base(lapic_mmio_base);
+
+    /* Parse the rest of the MADT */
     while (cur < end) {
         hdr = (void *)cur;
 
-- 
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