Allow console input to be disabled

Added new CONFIG_DISABLE_CONSOLE define and GD_FLG_DISABLE_CONSOLE.

When CONFIG_DISABLE_CONSOLE is defined, setting
GD_FLG_DISABLE_CONSOLE disables all console input and output.

Signed-off-by: Mark Jackson <mpfj@mimc.co.uk>
diff --git a/include/asm-arm/global_data.h b/include/asm-arm/global_data.h
index 7e2a53a..f419b42 100644
--- a/include/asm-arm/global_data.h
+++ b/include/asm-arm/global_data.h
@@ -63,6 +63,7 @@
 #define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed		*/
 #define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted		*/
 #define	GD_FLG_LOGINIT	0x00020		/* Log Buffer has been initialized	*/
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
 
 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("r8")
 
diff --git a/include/asm-avr32/global_data.h b/include/asm-avr32/global_data.h
index 007cfe4..75e75cc 100644
--- a/include/asm-avr32/global_data.h
+++ b/include/asm-avr32/global_data.h
@@ -54,6 +54,7 @@
 #define GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed	 */
 #define GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted	 */
 #define GD_FLG_LOGINIT	0x00020		/* Log Buf has been initialized	 */
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
 
 #define DECLARE_GLOBAL_DATA_PTR register gd_t *gd asm("r5")
 
diff --git a/include/asm-blackfin/global_data.h b/include/asm-blackfin/global_data.h
index b0b01e4..2f40870 100644
--- a/include/asm-blackfin/global_data.h
+++ b/include/asm-blackfin/global_data.h
@@ -64,6 +64,7 @@
 #define	GD_FLG_POSTFAIL	0x00008	/* Critical POST test failed     */
 #define	GD_FLG_POSTSTOP	0x00010	/* POST seqeunce aborted	 */
 #define	GD_FLG_LOGINIT	0x00020	/* Log Buf has been initialized	 */
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
 
 #define DECLARE_GLOBAL_DATA_PTR     register gd_t * volatile gd asm ("P5")
 
diff --git a/include/asm-i386/global_data.h b/include/asm-i386/global_data.h
index 5dfb595..35bad23 100644
--- a/include/asm-i386/global_data.h
+++ b/include/asm-i386/global_data.h
@@ -57,6 +57,7 @@
 #define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed		*/
 #define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted		*/
 #define	GD_FLG_LOGINIT	0x00020		/* Log Buffer has been initialized	*/
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
 
 extern gd_t *global_data;
 
diff --git a/include/asm-m68k/global_data.h b/include/asm-m68k/global_data.h
index 10c6931..187618d 100644
--- a/include/asm-m68k/global_data.h
+++ b/include/asm-m68k/global_data.h
@@ -75,6 +75,7 @@
 #define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed		*/
 #define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted		*/
 #define	GD_FLG_LOGINIT	0x00020		/* Log Buffer has been initialized	*/
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
 
 #if 0
 extern gd_t *global_data;
diff --git a/include/asm-microblaze/global_data.h b/include/asm-microblaze/global_data.h
index 376786f..013c56a 100644
--- a/include/asm-microblaze/global_data.h
+++ b/include/asm-microblaze/global_data.h
@@ -55,6 +55,7 @@
 #define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed		*/
 #define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted		*/
 #define	GD_FLG_LOGINIT	0x00020		/* Log Buffer has been initialized	*/
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
 
 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("r31")
 
diff --git a/include/asm-mips/global_data.h b/include/asm-mips/global_data.h
index ecee6de..7cf2a00 100644
--- a/include/asm-mips/global_data.h
+++ b/include/asm-mips/global_data.h
@@ -57,6 +57,7 @@
 #define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed	 */
 #define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted	 */
 #define	GD_FLG_LOGINIT	0x00020		/* Log Buf has been initialized	 */
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
 
 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("k0")
 
diff --git a/include/asm-nios/global_data.h b/include/asm-nios/global_data.h
index a56f939..4929a5b 100644
--- a/include/asm-nios/global_data.h
+++ b/include/asm-nios/global_data.h
@@ -48,6 +48,7 @@
 #define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed		*/
 #define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted		*/
 #define	GD_FLG_LOGINIT	0x00020		/* Log Buffer has been initialized	*/
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
 
 #define DECLARE_GLOBAL_DATA_PTR     register gd_t *gd asm ("%g7")
 
diff --git a/include/asm-nios2/global_data.h b/include/asm-nios2/global_data.h
index cd17e08..db71324 100644
--- a/include/asm-nios2/global_data.h
+++ b/include/asm-nios2/global_data.h
@@ -47,6 +47,7 @@
 #define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed		*/
 #define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted		*/
 #define	GD_FLG_LOGINIT	0x00020		/* Log Buffer has been initialized	*/
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
 
 #define DECLARE_GLOBAL_DATA_PTR     register gd_t *gd asm ("r15")
 
diff --git a/include/asm-ppc/global_data.h b/include/asm-ppc/global_data.h
index a9366c3..4331a15 100644
--- a/include/asm-ppc/global_data.h
+++ b/include/asm-ppc/global_data.h
@@ -180,6 +180,7 @@
 #define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed		*/
 #define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted		*/
 #define	GD_FLG_LOGINIT	0x00020		/* Log Buffer has been initialized	*/
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
 
 #if 1
 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("r2")
diff --git a/include/asm-sh/global_data.h b/include/asm-sh/global_data.h
index d61421b..f8ade5c 100644
--- a/include/asm-sh/global_data.h
+++ b/include/asm-sh/global_data.h
@@ -47,6 +47,7 @@
 #define	GD_FLG_POSTFAIL	0x00008		/* Critical POST test failed		*/
 #define	GD_FLG_POSTSTOP	0x00010		/* POST seqeunce aborted		*/
 #define	GD_FLG_LOGINIT	0x00020		/* Log Buffer has been initialized	*/
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
 
 #define DECLARE_GLOBAL_DATA_PTR	register gd_t *gd asm ("r13")
 
diff --git a/include/asm-sparc/global_data.h b/include/asm-sparc/global_data.h
index a8d85f1..eeb35d0 100644
--- a/include/asm-sparc/global_data.h
+++ b/include/asm-sparc/global_data.h
@@ -82,6 +82,7 @@
 #define	GD_FLG_POSTFAIL	0x00008	/* Critical POST test failed		*/
 #define	GD_FLG_POSTSTOP	0x00010	/* POST seqeunce aborted		*/
 #define	GD_FLG_LOGINIT	0x00020	/* Log Buffer has been initialized	*/
+#define GD_FLG_DISABLE_CONSOLE	0x00040		/* Disable console (in & out)	 */
 
 #define DECLARE_GLOBAL_DATA_PTR     register volatile gd_t *gd asm ("%g7")