From fa3218d8594869b38b1a170ea36d176ac455b897 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Tue, 29 Jan 2008 15:43:13 +0100 Subject: [ARM] 4660/3: at91: allow selecting UART for early kernel messages Currently early kernel messages, i.e., those from uncompression, go to the debugging UART. And if it is enabled in the platform configuration, but not initialized by the bootloader, the machine hangs, waiting for UART status change. Besides, having those messages on another UART - typically the console UART - may be preferrable. This patch allows selecting the UART in kernel configuration. Signed-off-by: Guennadi Liakhovetski Acked-by: Andrew Victor Signed-off-by: Russell King --- arch/arm/mach-at91/Kconfig | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'arch') diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig index 5b0422cdde76..074dcd5d9a7e 100644 --- a/arch/arm/mach-at91/Kconfig +++ b/arch/arm/mach-at91/Kconfig @@ -253,6 +253,36 @@ config AT91_TIMER_HZ system clock (of at least several MHz), rounding is less of a problem so it can be safer to use a decimal values like 100. +choice + prompt "Select a UART for early kernel messages" + +config AT91_EARLY_DBGU + bool "DBGU" + +config AT91_EARLY_USART0 + bool "USART0" + +config AT91_EARLY_USART1 + bool "USART1" + +config AT91_EARLY_USART2 + bool "USART2" + depends on ! ARCH_AT91X40 + +config AT91_EARLY_USART3 + bool "USART3" + depends on (ARCH_AT91RM9200 || ARCH_AT91SAM9RL || ARCH_AT91SAM9260) + +config AT91_EARLY_USART4 + bool "USART4" + depends on ARCH_AT91SAM9260 + +config AT91_EARLY_USART5 + bool "USART5" + depends on ARCH_AT91SAM9260 + +endchoice + endmenu endif -- cgit v1.2.2