u-boot/board/trab
Wolfgang Denk b5ffb19333 TRAB: make independent of specific libgcc helper routines
The TRAB board references local libgcc helper routines
(lib_arm/div0.o and lib_arm/_umodsi3.o) which cause build problems
when we try to use the normal, compiler provided libgcc instead.
Removing these references allows to build both with and without the
local libgcc helper routines.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2009-08-21 23:25:22 +02:00
..
auto_update.c Fix e-mail address of Gary Jennejohn. 2009-05-15 22:11:59 +02:00
cmd_trab.c trab: rename spi_init() 2009-08-13 09:20:41 +02:00
config.mk arm: unify linker script 2009-06-12 20:39:52 +02:00
flash.c Redundant Environment: protect full sector size 2009-06-04 00:16:16 +02:00
lowlevel_init.S Fix e-mail address of Gary Jennejohn. 2009-05-15 22:11:59 +02:00
Makefile TRAB: make independent of specific libgcc helper routines 2009-08-21 23:25:22 +02:00
memory.c board/trab/memory.c: Fix compile problems. 2008-12-16 22:32:25 +01:00
Pt1000_temp_data.h * Patch by Martin Krause, 11 Sep 2003: 2003-09-11 23:06:34 +00:00
README.kbd Initial revision 2002-11-03 00:24:07 +00:00
rs485.c Fix e-mail address of Gary Jennejohn. 2009-05-15 22:11:59 +02:00
rs485.h Fix e-mail address of Gary Jennejohn. 2009-05-15 22:11:59 +02:00
trab.c General help message cleanup 2009-06-12 20:47:16 +02:00
trab_fkt.c trab: rename spi_init() 2009-08-13 09:20:41 +02:00
tsc2000.c trab: rename spi_init() 2009-08-13 09:20:41 +02:00
tsc2000.h trab: rename spi_init() 2009-08-13 09:20:41 +02:00
u-boot.lds TRAB: make independent of specific libgcc helper routines 2009-08-21 23:25:22 +02:00
vfd.c stdio/device: rework function naming convention 2009-07-18 00:27:46 +02:00

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.