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>

common/console.c

@@ -162,6 +162,11 @@ void fprintf (int file, const char *fmt, ...)
 
 int getc (void)
 {
+#ifdef CONFIG_DISABLE_CONSOLE
+	if (gd->flags & GD_FLG_DISABLE_CONSOLE)
+		return 0;
+#endif
+
 	if (gd->flags & GD_FLG_DEVINIT) {
 		/* Get from the standard input */
 		return fgetc (stdin);
@@ -173,6 +178,11 @@ int getc (void)
 
 int tstc (void)
 {
+#ifdef CONFIG_DISABLE_CONSOLE
+	if (gd->flags & GD_FLG_DISABLE_CONSOLE)
+		return 0;
+#endif
+
 	if (gd->flags & GD_FLG_DEVINIT) {
 		/* Test the standard input */
 		return ftstc (stdin);
@@ -189,6 +199,11 @@ void putc (const char c)
 		return;
 #endif
 
+#ifdef CONFIG_DISABLE_CONSOLE
+	if (gd->flags & GD_FLG_DISABLE_CONSOLE)
+		return;
+#endif
+
 	if (gd->flags & GD_FLG_DEVINIT) {
 		/* Send to the standard output */
 		fputc (stdout, c);
@@ -205,6 +220,11 @@ void puts (const char *s)
 		return;
 #endif
 
+#ifdef CONFIG_DISABLE_CONSOLE
+	if (gd->flags & GD_FLG_DISABLE_CONSOLE)
+		return;
+#endif
+
 	if (gd->flags & GD_FLG_DEVINIT) {
 		/* Send to the standard output */
 		fputs (stdout, s);

include/asm-arm/global_data.h

@@ -63,6 +63,7 @@ typedef	struct	global_data {
 #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")
 

include/asm-avr32/global_data.h

@@ -54,6 +54,7 @@ typedef	struct	global_data {
 #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")
 

include/asm-blackfin/global_data.h

@@ -64,6 +64,7 @@ typedef struct global_data {
 #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")
 

include/asm-i386/global_data.h

@@ -57,6 +57,7 @@ typedef	struct {
 #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;
 

include/asm-m68k/global_data.h

@@ -75,6 +75,7 @@ typedef	struct	global_data {
 #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;

include/asm-microblaze/global_data.h

@@ -55,6 +55,7 @@ typedef	struct	global_data {
 #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")
 

include/asm-mips/global_data.h

@@ -57,6 +57,7 @@ typedef	struct	global_data {
 #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")
 

include/asm-nios/global_data.h

@@ -48,6 +48,7 @@ typedef	struct	global_data {
 #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")
 

include/asm-nios2/global_data.h

@@ -47,6 +47,7 @@ typedef	struct	global_data {
 #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")
 

include/asm-ppc/global_data.h

@@ -180,6 +180,7 @@ typedef	struct	global_data {
 #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")

include/asm-sh/global_data.h

@@ -47,6 +47,7 @@ typedef	struct global_data
 #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")
 

include/asm-sparc/global_data.h

@@ -82,6 +82,7 @@ typedef struct global_data {
 #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")