[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>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/asm-arm/arch-at91/at91sam9263.h b/include/asm-arm/arch-at91/at91sam9263.h
index 115c47ac7ebb..018a647311da 100644
--- a/include/asm-arm/arch-at91/at91sam9263.h
+++ b/include/asm-arm/arch-at91/at91sam9263.h
@@ -101,6 +101,10 @@
 #define AT91_RTT1       (0xfffffd50 - AT91_BASE_SYS)
 #define AT91_GPBR       (0xfffffd60 - AT91_BASE_SYS)
 
+#define AT91_USART0     AT91SAM9263_BASE_US0
+#define AT91_USART1     AT91SAM9263_BASE_US1
+#define AT91_USART2     AT91SAM9263_BASE_US2
+
 #define AT91_SMC        AT91_SMC0
 
 /*