build: allow specifying flow-control to grub on serial console

On the more sophisticated (i.e. deeper FIFO) serial controllers,
flow-control might be needed to avoid dropping output.

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>
This commit is contained in:
Philip Prindeville
2017-02-06 20:33:36 -07:00
committed by Felix Fietkau
parent dfacdc6a99
commit 7fe5963be0
2 changed files with 7 additions and 2 deletions

View File

@@ -203,6 +203,11 @@ menu "Target Images"
default 38400 if TARGET_x86_generic
default 115200
config GRUB_FLOWCONTROL
bool "Use RTE/CTS on serial console"
depends on GRUB_SERIAL != ""
default n
config GRUB_BOOTOPTS
string "Extra kernel boot options"
depends on GRUB_IMAGES