Index: usr.sbin/efibootmgr/efibootmgr.8
===================================================================
--- usr.sbin/efibootmgr/efibootmgr.8
+++ usr.sbin/efibootmgr/efibootmgr.8
@@ -24,20 +24,39 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd December 28, 2018
+.Dd January 1, 2019
 .Dt EFIBOOTMGR 8
 .Os
 .Sh NAME
-.Nm efibootmgr 
+.Nm efibootmgr
 .Nd manipulate the EFI Boot Manager
 .Sh SYNOPSIS
-.Op Fl aAnNB
-.Op Fl b Ar bootnum
-.Op Fl t Ar timeout
-.Op Fl T
-.Op Fl o Ar bootorder
+.Nm
 .Op Fl v
-.Op Fl c l Ar loader [ Fl k Ar kernel ] [ Fl L Ar label ] [ Fl -dry-run ]
+.Nm
+.Fl c
+.Fl l Ar loader
+.Op Fl aD
+.Op Fl b Ar bootnum
+.Op Fl k Ar kernel
+.Op Fl L Ar label
+.Nm
+.Fl B
+.Fl b Ar bootnum
+.Nm
+.Brq Fl a Ns | Ns Fl A
+.Fl b Ar bootnum
+.Nm
+.Fl n
+.Fl b Ar bootnum
+.Nm
+.Fl N
+.Nm
+.Fl o Ar bootnum1 Ns , Ns Ar bootnum2 Ns , Ns Ar ...
+.Nm
+.Fl t Ar seconds
+.Nm
+.Fl T
 .Sh "DESCRIPTION"
 .Nm
 manipulates how UEFI Boot Managers boot the system.
@@ -86,9 +105,9 @@
 Deactivate the given bootnum boot entry.
 .It Fl n -bootnext
 Set bootnum boot entry as the BootNext variable.
-.It Fl N -delete-bootnext 
+.It Fl N -delete-bootnext
 Delete the BootNext optional variable.
-.It Fl o -bootorder Ar bootorder
+.It Fl o -bootorder Ar bootnum1 Ns , Ns Ar bootnum2 Ns , Ns Ar ...
 Set BootOrder variable to the given comma delimited set of bootnums.
 The numbers are in hex to match BootXXXX, but may omit leading zeros.
 .It Fl t -set-timeout Ar timeout
Index: usr.sbin/efibootmgr/efibootmgr.c
===================================================================
--- usr.sbin/efibootmgr/efibootmgr.c
+++ usr.sbin/efibootmgr/efibootmgr.c
@@ -169,23 +169,48 @@
 	    COMMON_ATTRS);
 }
 
+typedef enum {
+	EBM_USAGE,
+	EBM_LIST,
+	EBM_CREATE,
+	EBM_DELETE,
+	EBM_ACTIVE,
+	EBM_BOOTNEXT_SET,
+	EBM_BOOTNEXT_DELETE,
+	EBM_ORDER,
+	EBM_TIMEOUT_SET,
+	EBM_TIMEOUT_DELETE
+} ebm_usage_t;
+static const char * const ebm_usage[] = {
+	[EBM_LIST] = "[-v]",
+	[EBM_CREATE] = "-c -l loader [-aD] [-b bootnum] [-k kernel] [-L label]",
+	[EBM_DELETE] = "-B -b bootnum",
+	[EBM_ACTIVE] = "{-a|-A} -b bootnum",
+	[EBM_BOOTNEXT_SET] = "-n -b bootnum",
+	[EBM_BOOTNEXT_DELETE] = "-N",
+	[EBM_ORDER] = "-o bootnum1,bootnum2,...",
+	[EBM_TIMEOUT_SET] = "-t seconds",
+	[EBM_TIMEOUT_DELETE] = "-T"
+};
+
+static void
+usage(ebm_usage_t unum)
+{
+
+	fprintf(stderr, "Usage:\n");
 
-#define USAGE \
-	"   [-aAnB -b bootnum] [-N] [-t timeout] [-T] [-o bootorder] [-O] [--verbose] [--help]\n\
-  [-c -l loader [-k kernel] [-L label] [--dry-run] [-b bootnum]]"
-
-#define CREATE_USAGE \
-	"       efibootmgr -c -l loader [-k kernel] [-L label] [--dry-run] [-b bootnum] [-a]"
-#define ORDER_USAGE \
-	"       efibootmgr -o bootvarnum1,bootvarnum2,..."
-#define TIMEOUT_USAGE \
-	"       efibootmgr -t seconds"
-#define DELETE_USAGE \
-	"       efibootmgr -B -b bootnum"
-#define ACTIVE_USAGE \
-	"       efibootmgr [-a | -A] -b bootnum"
-#define BOOTNEXT_USAGE \
-	"       efibootmgr [-n | -N] -b bootnum"
+	if (unum >= 1 && unum < nitems(ebm_usage))
+		fprintf(stderr, "\t%s %s\n", getprogname(), ebm_usage[unum]);
+	else {
+		ebm_usage_t i;
+
+		for (i = 1; i < nitems(ebm_usage); i++)
+			fprintf(stderr, "\t%s %s\n", getprogname(),
+			    ebm_usage[i]);
+	}
+
+	exit(1);
+}
 
 static void
 parse_args(int argc, char *argv[])
@@ -223,7 +248,7 @@
 			break;
 		case 'h':
 		default:
-			errx(1, "%s", USAGE);
+			usage(EBM_USAGE);
 			break;
 		case 'k':
 			free(opts.kernel);
@@ -265,21 +290,21 @@
 	}
 	if (opts.create) {
 		if (!opts.loader)
-			errx(1, "%s",CREATE_USAGE);
+			usage(EBM_CREATE);
 		return;
 	}
 
 	if (opts.order && !(opts.order))
-		errx(1, "%s", ORDER_USAGE);
+		usage(EBM_ORDER);
 
 	if ((opts.set_inactive || opts.set_active) && !opts.has_bootnum)
-		errx(1, "%s", ACTIVE_USAGE);
+		usage(EBM_ACTIVE);
 
 	if (opts.delete && !opts.has_bootnum)
-		errx(1, "%s", DELETE_USAGE);
+		usage(EBM_DELETE);
 
 	if (opts.set_bootnext && !opts.has_bootnum)
-		errx(1, "%s", BOOTNEXT_USAGE);
+		usage(EBM_BOOTNEXT_SET);
 }
 
 
@@ -344,7 +369,7 @@
 		new_data[i] = strtoul(next, NULL, 16);
 		if (new_data[i] == 0 && errno == EINVAL) {
 			warnx("can't parse %s as a numb", next);
-			errx(1, "%s", ORDER_USAGE);
+			usage(EBM_ORDER);
 		}
 		i++;
 	}