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soc/intel/skylake: Add Kconfig option to select UART index 

Skylake/Kabylake SOC has two possible ways to make serial
console functional.

1. Legacy IO based access using Port 0x3F8.
2. LPSS UART PCI based access.

This patch to provide option to select index for LPSS
UART port: 0 = LPSS UART0, 1 = LPSS UART1, 2 = LPSS UART2

PCI based LPSS UART2 is by default enabled for Chrome Design.

Change-Id: I9647820fe59b5d1a1001a611b9ae3580946da0ae
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/20996
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Subrata Banik 2017-08-14 11:55:10 +05:30 committed by Martin Roth
parent d6bd825d6c
commit 19a7adeffe
1 changed files with 7 additions and 0 deletions
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7
src/soc/intel/skylake/Kconfig
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@ -200,6 +200,13 @@ config UART_DEBUG
select DRIVERS_UART_8250MEM_32 select DRIVERS_UART_8250MEM_32
select NO_UART_ON_SUPERIO select NO_UART_ON_SUPERIO
config UART_FOR_CONSOLE
int "Index for LPSS UART port to use for console"
default 2 if DRIVERS_UART_8250MEM
help
Index for LPSS UART port to use for console:
0 = LPSS UART0, 1 = LPSS UART1, 2 = LPSS UART2
config SKYLAKE_SOC_PCH_H config SKYLAKE_SOC_PCH_H
bool bool
default n default n