serial: convert early_uart to earlycon for 8250

[deliverable/linux.git] / drivers / serial / Kconfig

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 2adbed4e10f350ac753d7db2f1be860eb01e6243..cab42cbd920db98df8d9941f5f0e466dfdfa6868 100644 (file)
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -62,8 +62,22 @@ config SERIAL_8250_CONSOLE
          kernel will automatically use the first serial line, /dev/ttyS0, as
          system console.
 
+         you can set that using a kernel command line option such as
+         "console=uart8250,io,0x3f8,9600n8"
+         "console=uart8250,mmio,0xff5e0000,115200n8".
+         and it will switch to normal serial console when correponding port is
+         ready.
+         "earlycon=uart8250,io,0x3f8,9600n8"
+         "earlycon=uart8250,mmio,0xff5e0000,115200n8".
+         it will not only setup early console.
+
          If unsure, say N.
 
+config FIX_EARLYCON_MEM
+       bool
+       depends on X86
+       default y
+
 config SERIAL_8250_GSC
        tristate
        depends on SERIAL_8250 && GSC