From 5138d871202317c7432549b1ac663f26eb3a8759 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Mon, 19 May 2025 00:59:49 -0400
Subject: kernel/amd64: Add reboot RESET and POWEROFF flags

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/arch/amd64/amd64/reboot.c | 5 +++++
 sys/include/sys/reboot.h      | 5 +++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/sys/arch/amd64/amd64/reboot.c b/sys/arch/amd64/amd64/reboot.c
index b9df1c0..64db09e 100644
--- a/sys/arch/amd64/amd64/reboot.c
+++ b/sys/arch/amd64/amd64/reboot.c
@@ -32,10 +32,15 @@
 #include <sys/cdefs.h>
 #include <machine/pio.h>
 #include <machine/cpu.h>
+#include <dev/acpi/acpi.h>
 
 void
 cpu_reboot(int method)
 {
+    if (ISSET(method, REBOOT_POWEROFF)) {
+        acpi_sleep(ACPI_SLEEP_S5);
+    }
+
     if (ISSET(method, REBOOT_HALT)) {
         cpu_halt_all();
     }
diff --git a/sys/include/sys/reboot.h b/sys/include/sys/reboot.h
index 86fc45d..eeb55f8 100644
--- a/sys/include/sys/reboot.h
+++ b/sys/include/sys/reboot.h
@@ -33,9 +33,10 @@
 #include <sys/param.h>
 #include <sys/cdefs.h>
 
-#define REBOOT_HALT  BIT(0)     /* Halt instead of rebooting */
-
 #if defined(_KERNEL)
+#define REBOOT_RESET    0x00000000
+#define REBOOT_HALT     BIT(0)  /* Halt instead of rebooting */
+#define REBOOT_POWEROFF BIT(1)  /* Power off (needs REBOOT_HALT set too) */
 
 void cpu_reboot(int method);
 
-- 
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