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-rw-r--r--drivers/serial/Kconfig19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 4829284216..b5a91b707e 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -44,6 +44,15 @@ config DEBUG_UART_NS16550
will need to provide parameters to make this work. The driver will
be available until the real driver model serial is running.
+config DEBUG_EFI_CONSOLE
+ bool "EFI"
+ depends on EFI_APP
+ help
+ Select this to enable a debug console which calls back to EFI to
+ output to the console. This can be useful for early debugging of
+ U-Boot when running on top of EFI (Extensive Firmware Interface).
+ This is a type of BIOS used by PCs.
+
endchoice
config DEBUG_UART_BASE
@@ -102,3 +111,13 @@ config UNIPHIER_SERIAL
help
If you have a UniPhier based board and want to use the on-chip
serial ports, say Y to this option. If unsure, say N.
+
+config X86_SERIAL
+ bool "Support for 16550 serial port on x86 machines"
+ depends on X86
+ default y
+ help
+ Most x86 machines have a ns16550 UART or compatible. This can be
+ enabled in the device tree with the correct input clock frequency
+ provided (default 1843200). Enable this to obtain serial console
+ output.