Letux U-Boot

NewCommands

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Table of Content

List of new U-Boot commands

new uBoot commands

  • led in[it] - setup GPIOs
  • led ge[t] - get button status
  • led se[t] hh - set LEDs to lower 4 bit
  • led se[t] - increment last state, i.e. make LEDs count
  • led mi[rror] - read button status and mirror to LEDs until a key is pressed
  • led bl[ink] - blink LEDs

  • lcm in[it] - initialize subsystem (DSS, GPIOs etc.)

  • lcm ba[cklight] dd - set backlight level (0..255)
  • lcm po[wer] dd - set power level (0..2)
  • lcm on - set lcm on
  • lcm of[f] - set lcm off

To be Done:

  • gps on | of[f] - control GPS receiver (and initialize UART)
  • gps re[ad] - read GPS NMEA from UART until a key is pressed

  • tsc init - initialize/enable TSC2007 through I2C2

  • tsc get - read current ADC values (incl. internal temp and AUX/photosensor)
  • tsc lo[op] - read x/y coordinates
  • tsc ch[oose] - somehow allow to define receptive fields and use the result to select different boot options

Ideas

can uBoot load bitmap files from the boot-partition directly to the framebuffer of the LCM?

if yes: a) load splash.bmap screen from MMC while waiting to break into uBoot console b) load menu.bmap background image (so we can use icons etc.) and combine with 'tsc choose' to provide a simple but nice boot-menu

General ToDo:

integrate/rebase on official uBoot as soon as the patches by Khasim are approved.

http://groups.google.de/group/beagleboard/browse_thread/thread/f70159f29b29a68c

manage variants for GTA04E expansion board and real GTA04 board (have some differences in initialization, PIN MUX and assignment of signals)