From c5259e9c0a7abd781e42ec2bd55ec54f3c711588 Mon Sep 17 00:00:00 2001
From: yasuoka <yasuoka@openbsd.org>
Date: Tue, 30 Aug 2016 20:31:09 +0000
Subject: [PATCH] Use MaxMode to terminate the mode iteration.  Actually the
 old way couldn't interate the ConsOut modes properly on qemu.

input NONAKA Kimihiro
---
 sys/arch/amd64/stand/efiboot/efiboot.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/sys/arch/amd64/stand/efiboot/efiboot.c b/sys/arch/amd64/stand/efiboot/efiboot.c
index 7833a8a25c6..29ea212e758 100644
--- a/sys/arch/amd64/stand/efiboot/efiboot.c
+++ b/sys/arch/amd64/stand/efiboot/efiboot.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: efiboot.c,v 1.13 2016/06/10 18:36:06 jcs Exp $	*/
+/*	$OpenBSD: efiboot.c,v 1.14 2016/08/30 20:31:09 yasuoka Exp $	*/
 
 /*
  * Copyright (c) 2015 YASUOKA Masahiko <yasuoka@yasuoka.net>
@@ -373,10 +373,10 @@ efi_video_init(void)
 			EfiConsoleControlScreenText);
 	mode80x25 = -1;
 	mode100x31 = -1;
-	for (i = 0; ; i++) {
+	for (i = 0; i < conout->Mode->MaxMode; i++) {
 		status = EFI_CALL(conout->QueryMode, conout, i, &cols, &rows);
 		if (EFI_ERROR(status))
-			break;
+			continue;
 		if (mode80x25 < 0 && cols == 80 && rows == 25)
 			mode80x25 = i;
 		if (mode100x31 < 0 && cols == 100 && rows == 31)
@@ -519,10 +519,10 @@ efi_makebootargs(void)
 	status = EFI_CALL(BS->LocateProtocol, &gop_guid, NULL,
 	    (void **)&gop);
 	if (!EFI_ERROR(status)) {
-		for (i = 0; ; i++) {
+		for (i = 0; i < gop->Mode->MaxMode; i++) {
 			status = EFI_CALL(gop->QueryMode, gop, i, &sz, &info);
 			if (EFI_ERROR(status))
-				break;
+				continue;
 			gopsiz = info->HorizontalResolution *
 			    info->VerticalResolution;
 			if (gopsiz > bestsiz) {
@@ -629,16 +629,17 @@ Xvideo_efi(void)
 	int	 i, mode = -1;
 	char	*p;
 
-	for (i = 0; i < nitems(efi_video) && efi_video[i].cols > 0; i++) {
-		printf("Mode %d: %d x %d\n", i,
-		    efi_video[i].cols, efi_video[i].rows);
+	for (i = 0; i < nitems(efi_video) && i < conout->Mode->MaxMode; i++) {
+		if (efi_video[i].cols > 0)
+			printf("Mode %d: %d x %d\n", i,
+			    efi_video[i].cols, efi_video[i].rows);
 	}
 	if (cmd.argc == 2) {
 		p = cmd.argv[1];
 		mode = strtol(p, &p, 10);
 	}
 	printf("\nCurrent Mode = %d\n", conout->Mode->Mode);
-	if (0 <= mode && mode < i) {
+	if (0 <= mode && mode < i && efi_video[mode].cols > 0) {
 		EFI_CALL(conout->SetMode, conout, mode);
 		efi_video_reset();
 	}
-- 
2.20.1