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Diffstat (limited to 'doc/README.zeus')
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diff --git a/doc/README.zeus b/doc/README.zeus deleted file mode 100644 index 1848d8cd38..0000000000 --- a/doc/README.zeus +++ /dev/null @@ -1,73 +0,0 @@ - -Storage of the board specific values (ethaddr...) -------------------------------------------------- - -The board specific environment variables that should be unique -for each individual board, can be stored in the I2C EEPROM. This -will be done from offset 0x80 with the length of 0x80 bytes. The -following command can be used to store the values here: - -=> setdef de:20:6a:ed:e2:72 de:20:6a:ed:e2:73 AB0001 - - ethaddr eth1addr serial# - -Now those 3 values are stored into the I2C EEPROM. A CRC is added -to make sure that the values get not corrupted. - - -SW-Reset Pushbutton handling: ------------------------------ - -The SW-reset push button is connected to a GPIO input too. This -way U-Boot can "see" how long the SW-reset was pressed, and a -specific action can be taken. Two different actions are supported: - -a) Release after more than 5 seconds and less then 10 seconds: - -> Run POST - - Please note, that the POST test will take a while (approx. 1 min - on the 128MByte board). This is mainly due to the system memory - test. - -b) Release after more than 10 seconds: - -> Restore factory default settings - - The factory default values are restored. The default environment - variables are restored (ipaddr, serverip...) and the board - specific values (ethaddr, eth1addr and serial#) are restored - to the environment from the I2C EEPROM. Also a bootline parameter - is added to the Linux bootline to signal the Linux kernel upon - the next startup, that the factory defaults should be restored. - -The command to check this sw-reset status and act accordingly is - -=> chkreset - -This command is added to the default "bootcmd", so that it is called -automatically upon startup. - -Also, the 2 LED's are used to indicate the current status of this -command (time passed since pushing the button). When the POST test -will be run, the green LED will be switched off, and when the -factory restore will be initiated, the reg LED will be switched off. - - -Loggin of POST results: ------------------------ - -The results of the POST tests are logged in a logbuffer located at the end -of the onboard memory. It can be accessed with the U-Boot command "log": - -=> log show -<4>POST memory PASSED -<4>POST cache PASSED -<4>POST cpu PASSED -<4>POST uart PASSED -<4>POST ethernet PASSED - -The DENX Linux kernel tree has support for this log buffer included. Exactly -this buffer is used for logging of all kernel messages too. By enabling the -compile time option "CONFIG_LOGBUFFER" this support is enabled. This way you -can access the U-Boot log messages from Linux too. - -2007-08-10, Stefan Roese <sr@denx.de> |