| 110 | | By default the Gateworks bootloader's configure one of the board's UARTs for serial console. This can be disabled by changing the bootargs in the bootloader: |
| 111 | | * Example: Laguna uboot |
| 112 | | {{{ |
| 113 | | setenv bootargs console= root=/dev/mtdblock3 rootfstype=squashfs,jffs2 noinitrd |
| 114 | | saveenv |
| 115 | | }}} |
| 116 | | * Example: Ventana uboot: |
| 117 | | {{{ |
| 118 | | setenv console null |
| 119 | | saveenv |
| 120 | | }}} |
| 121 | | |
| 122 | | If using Yocto or a more traditional Linux based OS, you may need to take additional steps to disable the OS enabling the serial port for a Login terminal by removing the line with that serial port from {{{ /etc/inittab }}}. |
| 123 | | |
| 124 | | The bootloader will still output data upon power up - see below. |
| 125 | | |
| 126 | | |
| 127 | | [=#bootloader] |
| 128 | | == Bootloader Serial Console == |
| 129 | | If you wish to disable the bootloader's use of the serial port, you will need to recompile the bootloader. |
| 130 | | |
| 131 | | Notes: |
| 132 | | * For Lagunu u-boot-2008.10 modify CONFIG_CONS_INDEX in include/configs/cavium_cns3000*.h setting it to a non-existent port. |
| 133 | | * Define CONFIG_SILENT_CONSOLE to enable support for silent mode (must custom compile bootloader as discussed on the wiki [wiki:laguna/bootloader here]) |
| 134 | | * Set the u-boot envvar silent to disable some u-boot output |
| 135 | | * One should probably tweak the bootdelay to 1 second (or turn it off) |
| 136 | | * One can still interrupt u-boot by pressing the specified key (you won't see output, but your input will be processed) |
| 137 | | |
| | 110 | See [wiki:silenceconsole silenceconsole] for details on silencing or changing the serial console for boot firmware, Linux kernel, and OS. |
