system: add option to configure TERM variable

This option is useful for cases where the terminal isn't a bare serial
vt100, but e.g. a linux tty with more features.

Signed-off-by: Richard Braun <rbraun@sceen.net>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

system/Config.in

@@ -154,6 +154,12 @@ config BR2_TARGET_GENERIC_GETTY_BAUDRATE
 	default "57600"		if BR2_TARGET_GENERIC_GETTY_BAUDRATE_57600
 	default "115200"	if BR2_TARGET_GENERIC_GETTY_BAUDRATE_115200
 
+config BR2_TARGET_GENERIC_GETTY_TERM
+	string "Value to assign the TERM environment variable"
+	default "vt100"
+	help
+	  Specify a TERM type.
+
 config BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW
 	bool "remount root filesystem read-write during boot"
 	default y

system/system.mk

@@ -2,6 +2,7 @@ TARGET_GENERIC_HOSTNAME:=$(call qstrip,$(BR2_TARGET_GENERIC_HOSTNAME))
 TARGET_GENERIC_ISSUE:=$(call qstrip,$(BR2_TARGET_GENERIC_ISSUE))
 TARGET_GENERIC_GETTY:=$(call qstrip,$(BR2_TARGET_GENERIC_GETTY_PORT))
 TARGET_GENERIC_GETTY_BAUDRATE:=$(call qstrip,$(BR2_TARGET_GENERIC_GETTY_BAUDRATE))
+TARGET_GENERIC_GETTY_TERM:=$(call qstrip,$(BR2_TARGET_GENERIC_GETTY_TERM))
 
 target-generic-hostname:
 	mkdir -p $(TARGET_DIR)/etc
@@ -14,13 +15,13 @@ target-generic-issue:
 	echo "$(TARGET_GENERIC_ISSUE)" > $(TARGET_DIR)/etc/issue
 
 target-generic-getty-busybox:
-	$(SED) '/# GENERIC_SERIAL$$/s~^.*#~$(TARGET_GENERIC_GETTY)::respawn:/sbin/getty -L $(TARGET_GENERIC_GETTY) $(TARGET_GENERIC_GETTY_BAUDRATE) vt100 #~' \
+	$(SED) '/# GENERIC_SERIAL$$/s~^.*#~$(TARGET_GENERIC_GETTY)::respawn:/sbin/getty -L $(TARGET_GENERIC_GETTY) $(TARGET_GENERIC_GETTY_BAUDRATE) $(TARGET_GENERIC_GETTY_TERM) #~' \
 		$(TARGET_DIR)/etc/inittab
 
 # In sysvinit inittab, the "id" must not be longer than 4 bytes, so we
 # skip the "tty" part and keep only the remaining.
 target-generic-getty-sysvinit:
-	$(SED) '/# GENERIC_SERIAL$$/s~^.*#~$(shell echo $(TARGET_GENERIC_GETTY) | tail -c+4)::respawn:/sbin/getty -L $(TARGET_GENERIC_GETTY) $(TARGET_GENERIC_GETTY_BAUDRATE) vt100 #~' \
+	$(SED) '/# GENERIC_SERIAL$$/s~^.*#~$(shell echo $(TARGET_GENERIC_GETTY) | tail -c+4)::respawn:/sbin/getty -L $(TARGET_GENERIC_GETTY) $(TARGET_GENERIC_GETTY_BAUDRATE) $(TARGET_GENERIC_GETTY_TERM) #~' \
 		$(TARGET_DIR)/etc/inittab
 
 # Find commented line, if any, and remove leading '#'s