Add BCM2708_UNCOMPRESS_INFO option

Add a configuration option that can enable or disable the
uncompress info on the BCM2708 and BCM2709 family of processors.
Disabling this can be handy if the UART pin is needed for something
else, and the user does not want the info to be sent out on the
UART.

Author: kylefrombullex

arch/arm/mach-bcm2708/Kconfig

@@ -49,4 +49,11 @@ config BCM2708_SPIDEV
 	default y
 	help
 	  Binds spidev driver to the SPI0 master
+
+config BCM2708_UNCOMPRESS_INFO
+	bool "Enable uncompress info on UART"
+	depends on MACH_BCM2708
+	default y
+	help
+	  Enables the "Uncompressing Linux..." message on the UART on startup
 endmenu

arch/arm/mach-bcm2708/include/mach/uncompress.h

@@ -23,6 +23,8 @@
 #include <linux/amba/serial.h>
 #include <mach/hardware.h>
 
+#ifdef CONFIG_BCM2708_UNCOMPRESS_INFO
+
 #define UART_BAUD 115200
 
 #define BCM2708_UART_DR   __io(UART0_BASE + UART01x_DR)
@@ -82,3 +84,12 @@ static inline void arch_decomp_setup(void)
  * nothing to do
  */
 #define arch_decomp_wdog()
+
+#else /* CONFIG_BCM2708_UNCOMPRESS_INFO */
+
+#define putc(c)
+#define flush()
+#define arch_decomp_setup()
+#define arch_decomp_wdog()
+
+#endif /* CONFIG_BCM2708_UNCOMPRESS_INFO */

arch/arm/mach-bcm2709/Kconfig

@@ -46,4 +46,11 @@ config BCM2708_SPIDEV
 	default y
 	help
 	  Binds spidev driver to the SPI0 master
+
+config BCM2708_UNCOMPRESS_INFO
+	bool "Enable uncompress info on UART"
+	depends on MACH_BCM2709
+	default y
+	help
+	  Enables the "Uncompressing Linux..." message on the UART on startup
 endmenu

arch/arm/mach-bcm2709/include/mach/uncompress.h

@@ -23,6 +23,8 @@
 #include <linux/amba/serial.h>
 #include <mach/hardware.h>
 
+#ifdef CONFIG_BCM2708_UNCOMPRESS_INFO
+
 #define UART_BAUD 115200
 
 #define BCM2708_UART_DR   __io(UART0_BASE + UART01x_DR)
@@ -82,3 +84,12 @@ static inline void arch_decomp_setup(void)
  * nothing to do
  */
 #define arch_decomp_wdog()
+
+#else /* CONFIG_BCM2708_UNCOMPRESS_INFO */
+
+#define putc(c)
+#define flush()
+#define arch_decomp_setup()
+#define arch_decomp_wdog()
+
+#endif /* CONFIG_BCM2708_UNCOMPRESS_INFO */