[U-Boot-Users] Silent console enhancement patch

[Steven A. Falco <sfalco@harris.com>]

The silent console as currently implemented is not silent if a board has been
newly manufactured.  I.e., some messages are printed prior to being able to set
the "silent" environment variable the first time.

The following patch adds a new configuration option,
CONFIG_VERY_SILENT_CONSOLE, which modifies the behavior slightly.  If this
option is selected, then the absence of the "silent" variable will result in
a default behavior of "silent".  Also, if "silent" is set to "1", then the
behavior will be "silent".  Only if a different value, say "0", is selected
will the behavior be "verbose".

This patch doesn't change the behavior for any existing BSP's because they will
not have selected the CONFIG_VERY_SILENT_CONSOLE option.

Signed-off-by: Steve Falco <sfalco@harris.com>

diff --git a/common/console.c b/common/console.c
index d8a0cb6..4c98eef 100644
--- a/common/console.c
+++ b/common/console.c
@@ -361,12 +361,22 @@ int console_assign (int file, char *devname)
 /* Called before relocation - use serial functions */
 int console_init_f (void)
 {
+#ifdef CONFIG_VERY_SILENT_CONSOLE
+	char *pSilent;
+#endif
+
 	gd->have_console = 1;
 
 #ifdef CONFIG_SILENT_CONSOLE
+#ifdef CONFIG_VERY_SILENT_CONSOLE
+	pSilent = getenv("silent");
+	if(!pSilent || *pSilent == '1')
+		gd->flags |= GD_FLG_SILENT;
+#else
 	if (getenv("silent") != NULL)
 		gd->flags |= GD_FLG_SILENT;
 #endif
+#endif
 
 	return (0);
 }