Hi Frank,
On 4 March 2014 01:43, Frank Ihle <frank.i...@hs-offenburg.de> wrote: > > Hi everyone, > > I searched the Internet but the help I found didn't work. I hope someone here > may know how to fix it, here's the situation: > > I have this ARM9 SAM9G25 which is accessed by its ttyS0. I > want to disable all of the output, that was made during the U-Boot (v. > 2010.06) > boot, to decrease the CPU's load. Therefore there is the > > > setenv silent 1 > > > > parameter, which i put into the BOOTCMD string like: > > > > #define CONFIG_BOOTCOMMAND " setenv silent 1;" \ > > "bootm " > The check is done in console_init_f(), the 'f' meaning before relocation, and thus before the environment is loaded and much before the boot command is run. You need to put "silent=1" into your built-in environment in the board config file. See also serial_s5p.c which uses the device tree to make the console silent based on a device tree setting (i.e. not compiled into U-Boot). However, I doubt your board is using device tree. > > > > and there is (as mentioned in the Readme.silent > http://git.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=blob;f=doc/README.silent;hb=v2013.10 > ) the > #define CONFIG_SILENT_CONSOLE > #define CONFIG_SYS_DEVICE_NULLDEV > #define CONFIG_SILENT_CONSOLE_UPDATE_ON_SET Maybe you need CONFIG_SILENT_CONSOLE_UPDATE_ON_RELOC? > > > > command, neither one is working (the lines printed out are still the same and > the boot time didn't change). Whereas the > setenv varify n > is working, just to give an example. > > Does somebody see the error ? > > BTW (I'm not sure if this is related to this) in the referenced link there is > the information, that u-boot sets the kernel command line to "console=" so > that in the end there will be no output for the kernel too, but that didn't > happen and it doesn't even happen if i force to boot Linux with "console=" in > the default Linux command line string Do you see that in the Linux command line on boot? If you have silent_linux=yes in U-Boot, then it will make Linux silent. See fixup_silent_linux() for the full details. Regards, Simon > > Thanks for your help. > Kind Regards, > Frank > > > > > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
