From 50913d9a6fa0d7ab7bb32d584d0b9749024201fc Mon Sep 17 00:00:00 2001
From: David Karoly <karolyd577@gmail.com>
Date: Fri, 29 Jul 2022 16:47:54 +0200
Subject: [PATCH] boot/efi: fall back to legacy UART if EFI protocol is not
 available

Change-Id: I70ea16aa8842edcb22a3484cf908698c3c5026c8
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5509
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
---
 src/system/boot/platform/efi/serial.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/system/boot/platform/efi/serial.cpp b/src/system/boot/platform/efi/serial.cpp
index 9d74d8ce74..e54bb63838 100644
--- a/src/system/boot/platform/efi/serial.cpp
+++ b/src/system/boot/platform/efi/serial.cpp
@@ -39,7 +39,9 @@ enum serial_register_offsets {
 	SERIAL_MODEM_STATUS			= 6,
 };
 
+#if defined(__i386__) || defined(__x86_64__)
 static uint16 sSerialBasePort = 0x3f8;
+#endif
 
 
 DebugUART* gUART = NULL;
@@ -125,6 +127,7 @@ serial_init(void)
 
 	if (status != EFI_SUCCESS || sSerial == NULL) {
 		sSerial = NULL;
+		sSerialUsesEFI = false;
 		return;
 	}