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authorGuennadi Liakhovetski <lg@denx.de>2008-01-29 15:43:13 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-02-04 13:16:39 +0000
commitfa3218d8594869b38b1a170ea36d176ac455b897 (patch)
tree54e3423313f34fb144aa30c58f1d24018d604fce /arch/arm/mach-at91
parente83aff58bf1b7e6b355a0cfa206e9d3aebe5623f (diff)
downloadop-kernel-dev-fa3218d8594869b38b1a170ea36d176ac455b897.zip
op-kernel-dev-fa3218d8594869b38b1a170ea36d176ac455b897.tar.gz
[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/mach-at91')
-rw-r--r--arch/arm/mach-at91/Kconfig30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 5b0422c..074dcd5 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
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