7 Note: There are currently six variants of the TX6 module, that
8 require slightly different U-Boot configurations. They are
9 distinguished through the 'TX6' suffix 'Q' or 'U' and the
10 numerical suffix of the module name. Replace the '?' in the
11 following description with the corresponding digits from your
13 E.g. TX6Q-1010 => 'make tx6q-1010_config'
19 tar -xjf /cdrom/U-Boot/u-boot-src.tar.bz2
21 Alternatively you can access the current source via the git repository:
22 git://git.karo-electronics.de/karo-tx-uboot.git master
28 export CROSS_COMPILE=arm-cortexa9-linux-gnueabi-
29 make tx6?-??1?_config (see above Note!)
35 If you want to replace a working U-Boot with a new version, you can
36 load the new U-Boot image via TFTP or SD-Card and write it to flash
37 with the 'romupdate' command.
39 If you want to revive a bricked module, U-Boot can be downloaded via
40 USB with the 'sbloader' tool in recovery boot mode (Bootmode jumper ST3
41 on Starterkit-5 baseboard closed). See TX6_U-Boot.pdf for details.
43 e.g.: /cdrom/Flashtools/Linux/sbloader/sbloader-x86_32 -m -s /cdrom/U-Boot/target/u-boot-tx6q-1010.bin
44 (This command can be used from within the ARMSK-VM)
48 For Windows users the application MfgTool allows the (re-)flashing of
49 U-Boot. For more information either see:
51 \U-Boot\TX6Q_U-Boot.pdf
52 \STK5_TX6Q_Quickstart_Guide.pdf
53 \Flashtools\Windows\Mfgtools-TX6...
59 Environment variables:
61 cpu_clk <CPU freq [MHz]> CPU clock frequency set after boot.
63 touchpanel {tsc2007|edt-ft5x06|egalax_ts} type of touchpanel.
64 No touchpanel will be enabled when unset.
66 otg_mode [host|device|none] operation mode of the USBOTG port
68 video_mode <one of the display names from the Glyn Family Concept or
69 a video mode as understood by Linux fb_find_mode() function
70 (e.g.: 640x480MR-24@60)>
71 LCD interface will be disabled when unset.
73 baseboard {stk5-v3|stk5-v5} selects type of baseboard
74 'stk5-v5' setting disables USB Host mode on USBOTG port
75 and redefines the LCD0 pin as CAN transceiver control pin.
76 Strings not starting in 'stk5' prevent the STK5 specific
77 pad initialization to be done.
79 splashimage either: memory address (e.g. ${loadaddr}) of a BMP file
80 to be displayed instead of the built-in logo. Since NAND
81 flash is not accessible in a memory mapped fashion,
82 U-Boot will try to load the contents of the flash
83 partition 'logo.bmp' to the address given with
86 or: the name of an MTD partition, that contains a raw
87 dump of the frame buffer contents which will be loaded
90 splashpos (when 'splashimage' contains a memory address) the
91 position ('x,y') on the screen at which the BMP image
93 Setting splashpos to 'm,m' will center the image on the
96 Note: Some variables (like 'cpu_clk' or 'splashimage') may render the
97 board unbootable if incorrectly set. Therefore these variables
98 will not be evaluated in case the board has been reset through a
99 watchdog reset or <CTRL-C> is detected on the serial console
100 during startup to give the user a chance to recover from this
101 situation. You should press and hold <CTRL-C> before applying
102 power to the module, for this to work.