1 The config option CONFIG_SILENT_CONSOLE can be used to quiet messages
2 on the console. If the option has been enabled, the output can be
3 silenced by setting the environment variable "silent". The variable
4 is latched into the global data at an early stage in the boot process
5 so deleting it with "setenv" will not take effect until the system is
8 The following actions are taken if "silent" is set at boot time:
10 - Until the console devices have been initialized, output has to be
11 suppressed by testing for the flag "GD_FLG_SILENT" in "gd->flags".
13 - When the console devices have been initialized, "stdout" and
14 "stderr" are set to "nulldev", so subsequent messages are
15 suppressed automatically. Make sure to enable "nulldev" by
16 #defining CONFIG_SYS_DEVICE_NULLDEV in your board config file.
18 - When booting a linux kernel, the "bootargs" are fixed up so that
19 the argument "console=" will be in the command line, no matter how
20 it was set in "bootargs" before.