diff options
Diffstat (limited to 'qemu/roms/u-boot/doc/README.switch_config')
| -rw-r--r-- | qemu/roms/u-boot/doc/README.switch_config | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/doc/README.switch_config b/qemu/roms/u-boot/doc/README.switch_config new file mode 100644 index 000000000..f8903738e --- /dev/null +++ b/qemu/roms/u-boot/doc/README.switch_config @@ -0,0 +1,25 @@ +On the enbw_cmc board is a KSZ8864RMN switch which needs +configured through spi before working. This is done on +startup from u-boot through a config file stored at an +address specified in the "hwconfig" environment variable, +subcommand "config". + +For example on the enbw_cmc board: + +hwconfig=switch:lan=on,pwl=off,config=0x60160000 + +The file has the following structure: + +- a comment starts with a '#' or a ';' and ends with a newline +- The switch needs for its config a reg/value pair, so we + have two columns in the file: + reg : contains the register address + value: contains a 8 bit register value + This 2 columns are seperated through space or tab. + +example (minimal configuration on the enbw_cmc board): + +;reg value comment +;----------------------------------------- +0x01 0x00 +0x01 0x01 ; Start Switch with this configuration |