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u-boot-brain/board/trab
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wdenk 4a6fd34b26 * Patch by Lutz Dennig, 10 Apr 2003: 
Update for R360MPI board

* Add new meaning to "autostart" environment variable:
  If set to "no", a standalone image passed to the
  "bootm" command will be copied to the load address
  (and eventually uncompressed), but NOT be started.
  This can be used to load and uncompress arbitrary
  data.

* Set max brightness for MN11236 displays on TRAB board
2003-04-12 23:38:12 +00:00
..
config.mk Initial revision 2002-11-03 00:38:21 +00:00
flash.c * Patch by Josef Wagner, 12 Mar 2003: 2003-03-12 10:41:04 +00:00
Makefile Initial revision 2002-10-17 21:52:26 +00:00
memsetup.S Initial revision 2002-11-03 00:38:21 +00:00
README.kbd Initial revision 2002-11-03 00:24:07 +00:00
trab.c * Patches by David Müller, 31 Jan 2003: 2003-03-06 21:55:29 +00:00
u-boot.lds * Patches by Robert Schwebel, 06 Mar 2003: 2003-03-06 13:39:27 +00:00
vfd.c * Patch by Lutz Dennig, 10 Apr 2003: 2003-04-12 23:38:12 +00:00

README.kbd 

The TRAB keyboard implementation is similar to that for LWMON and
R360MPI boards. The only difference concerns key naming. There are 4
keys on TRAB: 1, 2, 3, 4.

1) The "kbd" command provides information about the current state of
   the keys. For example,

	TRAB # kbd
	Keys: 1 0 1 0

   means that keys 1 and 3 are pressed. The keyboard status is also
   stored in the "keybd" environment variable. In this example we get

	keybd=1010

2) The "preboot" variable is set according to current environment
   settings and keys pressed. This is an example:

	TRAB # setenv magic_keys XY
	TRAB # setenv key_magicX 12
	TRAB # setenv key_cmdX echo ## Keys 1 + 2 pressed ##\;echo
	TRAB # setenv key_magicY 13
	TRAB # setenv key_cmdY echo ## Keys 1 + 3 pressed ##\;echo

   Here "magic_keys=XY" means that the "key_magicX" and "key_magicY"
   variables will be checked for a match. Each variable "key_magic*"
   defines a set of keys. In the our example, if keys 1 and 3 are
   pressed during reset, then "key_magicY" matches, so the "preboot"
   variable will be set to the contents of "key_cmdY":

	preboot=echo ## Keys 1 + 3 pressed ##;echo

3) The TRAB board has optional modem support. When a certain key
   combination is pressed on the keyboard at power-on, the firmware
   performs the necessary initialization of the modem and allows for
   dial-in. The key combination is specified in the
   "include/configs/trab.h" file. For example:

	#define        CONFIG_MODEM_KEY_MAGIC  "23"

   means that modem will be initialized if and only if both keys 2, 3
   are pressed. Note that the format of this string is similar to the
   format of "key_magic*" environment variables described above.