2 files changed, 29 insertions, 6 deletions

diff --git a/arch/arm/mach-ep93xx/Kconfig b/arch/arm/mach-ep93xx/Kconfig
index ea8549bfbef..5a1b8c05c95 100644
--- a/arch/arm/mach-ep93xx/Kconfig
+++ b/arch/arm/mach-ep93xx/Kconfig
@@ -88,6 +88,20 @@ config MACH_TS72XX
           Say 'Y' here if you want your kernel to support the
           Technologic Systems TS-72xx board.
 
+choice
+        prompt "Select a UART for early kernel messages"
+
+config EP93XX_EARLY_UART1
+        bool "UART1"
+
+config EP93XX_EARLY_UART2
+        bool "UART2"
+
+config EP93XX_EARLY_UART3
+        bool "UART3"
+
+endchoice
+
 endmenu
 
 endif
diff --git a/arch/arm/mach-ep93xx/include/mach/uncompress.h b/arch/arm/mach-ep93xx/include/mach/uncompress.h
index 1fd2f17de32..16026c2b1c8 100644
--- a/arch/arm/mach-ep93xx/include/mach/uncompress.h
+++ b/arch/arm/mach-ep93xx/include/mach/uncompress.h
@@ -31,10 +31,19 @@ static void __raw_writel(unsigned int value, unsigned int ptr)
         *((volatile unsigned int *)ptr) = value;
 }
 
-
-#define PHYS_UART1_DATA         0x808c0000
-#define PHYS_UART1_FLAG         0x808c0018
-#define UART1_FLAG_TXFF         0x20
+#if defined(CONFIG_EP93XX_EARLY_UART1)
+#define UART_BASE               EP93XX_UART1_PHYS_BASE
+#elif defined(CONFIG_EP93XX_EARLY_UART2)
+#define UART_BASE               EP93XX_UART2_PHYS_BASE
+#elif defined(CONFIG_EP93XX_EARLY_UART3)
+#define UART_BASE               EP93XX_UART3_PHYS_BASE
+#else
+#define UART_BASE               EP93XX_UART1_PHYS_BASE
+#endif
+
+#define PHYS_UART_DATA          (UART_BASE + 0x00)
+#define PHYS_UART_FLAG          (UART_BASE + 0x18)
+#define UART_FLAG_TXFF          0x20
 
 static inline void putc(int c)
 {
@@ -42,11 +51,11 @@ static inline void putc(int c)
 
         for (i = 0; i < 1000; i++) {
                 /* Transmit fifo not full?  */
-                if (!(__raw_readb(PHYS_UART1_FLAG) & UART1_FLAG_TXFF))
+                if (!(__raw_readb(PHYS_UART_FLAG) & UART_FLAG_TXFF))
                         break;
         }
 
-        __raw_writeb(c, PHYS_UART1_DATA);
+        __raw_writeb(c, PHYS_UART_DATA);
 }
 
 static inline void flush(void)