From 9aac5887595b765b6f64b2af08b785e82e095b57 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Fri, 18 Apr 2014 17:19:55 -0500 Subject: tty/serial: add generic serial earlycon This introduces generic earlycon infrastructure for serial devices based on the 8250 earlycon. This allows for supporting earlycon option with other serial devices. The earlycon output is enabled at the time early_params are processed. Only architectures that have fixmap support or have functional ioremap when early_params are processed are supported. This is the same restriction that the 8250 driver had. Signed-off-by: Rob Herring Cc: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/tty/serial/Kconfig') diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index 30530e47cdf..9fb6028ad90 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -7,6 +7,13 @@ if TTY menu "Serial drivers" depends on HAS_IOMEM +config SERIAL_EARLYCON + bool + help + Support for early consoles with the earlycon parameter. This enables + the console before standard serial driver is probed. The console is + enabled when early_param is processed. + source "drivers/tty/serial/8250/Kconfig" comment "Non-8250 serial port support" -- cgit v1.2.3-70-g09d2