From 960710e6ea032b312f9383cd9350632c01378e47 Mon Sep 17 00:00:00 2001
From: Joerg Wunsch <joerg@FreeBSD.org>
Date: Sat, 6 Jul 1996 14:18:56 +0000
Subject: [PATCH] Add the ability to specify bootflags.  This is similar to
 boot_i386(8), except for the root f/s options that don't seem to be useful.

---
 sys/i386/boot/netboot/bootmenu.c | 30 +++++++++++++++++++++++++++++-
 sys/i386/boot/netboot/main.c     |  4 ++--
 2 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/sys/i386/boot/netboot/bootmenu.c b/sys/i386/boot/netboot/bootmenu.c
index a67ac93e173..d8f23306379 100644
--- a/sys/i386/boot/netboot/bootmenu.c
+++ b/sys/i386/boot/netboot/bootmenu.c
@@ -12,11 +12,12 @@ extern int hostnamelen;
 extern unsigned long netmask;
 extern eth_reset();
 extern short aui;
+extern int howto;
 
 int cmd_ip(), cmd_server(), cmd_kernel(), cmd_help(), exit();
 int cmd_rootfs(), cmd_swapfs(), cmd_interface(), cmd_hostname();
 int cmd_netmask(), cmd_swapsize(), cmd_swapopts(), cmd_rootopts();
-int cmd_aui(), cmd_gateway();
+int cmd_aui(), cmd_gateway(), cmd_flags();
 
 struct bootcmds_t {
 	char *name;
@@ -39,6 +40,7 @@ struct bootcmds_t {
 	{"diskboot",	exit,		"          boot from disk"},
 	{"autoboot",	NULL,		"          continue"},
         {"trans",       cmd_aui,        "<on|off>     turn transceiver on|off"},
+	{"flags",	cmd_flags,	"[bcdhsv]  set boot flags"},
 	{NULL,		NULL,		NULL}
 };
 
@@ -283,6 +285,32 @@ cmd_swapopts(p)
         }
 }
 
+/**************************************************************************
+CMD_FLAGS - Set boot flags
+**************************************************************************/
+cmd_flags(buf)
+	char *buf;
+{
+	char p;
+	int flags = 0;
+
+	while ((p = *buf++))
+	switch (p) {
+	case 'b':	flags |= RB_HALT; break;
+	case 'c':	flags |= RB_CONFIG; break;
+	case 'd':	flags |= RB_KDB; break;
+	case 'h':	flags ^= RB_SERIAL; break;
+	case 's':	flags |= RB_SINGLE; break;
+	case 'v':	flags |= RB_VERBOSE; break;
+	case ' ':
+	case '\t':	break;
+	default:	printf("Unknown boot flag: %c\n", p);
+	}
+
+	howto = flags;
+	return(0);
+}
+
 /**************************************************************************
 EXECUTE - Decode command
 **************************************************************************/
diff --git a/sys/i386/boot/netboot/main.c b/sys/i386/boot/netboot/main.c
index 0ff7c3d8934..daa42e79597 100644
--- a/sys/i386/boot/netboot/main.c
+++ b/sys/i386/boot/netboot/main.c
@@ -24,7 +24,7 @@ struct	bootinfo bootinfo;
 int	root_nfs_port;
 unsigned long	netmask;
 char	kernel_handle[32];
-int 	offset;
+int 	offset, howto;
 
 extern char eth_driver[];
 extern	char packet[];
@@ -316,7 +316,7 @@ cfg_done:
 	bootinfo.bi_nfs_diskless = &nfsdiskless;
 	bootinfo.bi_size = sizeof bootinfo;
 	kernelentry = (void *)(head.a_entry & 0x00FFFFFF);
-	(*kernelentry)(RB_BOOTINFO,NODEV,0,0,0,&bootinfo,0,0,0);
+	(*kernelentry)(howto|RB_BOOTINFO,NODEV,0,0,0,&bootinfo,0,0,0);
 	printf("*** %s execute failure ***\n",kernel);
 }