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| author | Guennadi Liakhovetski <lg@denx.de> | 2008-01-29 15:43:13 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-02-04 13:16:39 +0000 |
| commit | fa3218d8594869b38b1a170ea36d176ac455b897 (patch) | |
| tree | 54e3423313f34fb144aa30c58f1d24018d604fce /arch/arm | |
| parent | e83aff58bf1b7e6b355a0cfa206e9d3aebe5623f (diff) | |
| download | linux-3.10-fa3218d8594869b38b1a170ea36d176ac455b897.tar.gz linux-3.10-fa3218d8594869b38b1a170ea36d176ac455b897.tar.bz2 linux-3.10-fa3218d8594869b38b1a170ea36d176ac455b897.zip | |
[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 <lg@denx.de>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-at91/Kconfig | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig index 5b0422cdde7..074dcd5d9a7 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 |