X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=doc%2FREADME.KARO-TX28;h=c5a1fe13adcaaa3d1ca81b2c9ef27de7923a364b;hb=e7386357d7009b91d7160ea0a3cbb7a8f1d1070c;hp=6f3f20e01420315da588f5ae03c2719c674c9837;hpb=1e362dc3e799fd86722a60f5639e52a67dfc0658;p=karo-tx-uboot.git

diff --git a/doc/README.KARO-TX28 b/doc/README.KARO-TX28
index 6f3f20e014..c5a1fe13ad 100644
--- a/doc/README.KARO-TX28
+++ b/doc/README.KARO-TX28
@@ -9,7 +9,7 @@ Note: There are currently two variants of the TX28 module, that
       distinguished through the last digit of the module name. Replace
       the '?' in the following description with the corresponding
       number from your TX28 module.
-      E.g. TX28-4031 => 'make tx28-40xx_config'
+      E.g. TX28-4031 => 'make tx28-40x1_config'
 
 Unpacking the source
 --------------------
@@ -18,40 +18,73 @@ cd u-boot
 tar -xjf /cdrom/U-Boot/u-boot-src.tar.bz2
 
 Alternatively you can access the current source via the git repository:
-git://git.kernelconcepts.de/karo-tx-uboot.git master
+git://git.karo-electronics.de/karo-tx-uboot.git master
 
 
 Compiling U-Boot
 ----------------
 export ARCH=arm
-export CROSS_COMPILE=arm-cortexa8-linux-gnueabi-
-make tx28-4?xx_config            (see above Note!)
+export CROSS_COMPILE=arm-926ejs-linux-gnueabi-
+make tx28-4?x?_config            (see above Note!)
 make
 
 
 Flashing U-Boot Image
 ---------------------
 If you want to replace a working U-Boot with a new version, you can
-load the new U-Boot image via TFTP and program it like any other flash
-partition with:
-nand erase.part u-boot;nand write.trimffs ${fileaddr} u-boot ${filesize}
+load the new U-Boot image via TFTP or SD-Card and write it to flash
+with the 'romupdate' command.
 
 If you want to revive a bricked module, U-Boot can be downloaded via
-USB with the 'sbloader' tool in recovery boot mode (Jumper ST3
-on Starterkit-5 baseboard closed). See TX28-U-Boot.pdf for details.
+USB with the 'sbloader' tool in recovery boot mode (Bootmode jumper ST3
+on Starterkit-5 baseboard closed). See TX28_U-Boot.pdf for details.
+
+e.g.: /cdrom/Flashtools/Linux/sbloader/sbloader-x86_32 -s /cdrom/U-Boot/u-boot-tx28-4031.bin
+(This command can be used from within the ARMSK-VM)
 
 
 U-Boot Features
 ---------------
 
 Environment variables:
+boot_mode     selects which boot script will be used by 'bootcmd' to
+	      boot the application (Linux)
+	      supported values:
+	      nand: (default) load kernel from NAND partition 'linux'
+			      and mount rootfs (fstype UBIFS)
+			      from partition 'rootfs'. 
+	      mmc:	      load kernel from file 'uImage' on first
+	      		      partition (FAT) on (first) SD/MMC card
+			      and mount rootfs (fstype autodetected)
+			      from second partition.
+	      net:	      load kernel image via tftp (file uImage)
+	      		      and mount rootfs via NFS. This requires
+			      the additional variables 'nfsroot'
+			      (path to rootfs on NFS server) and
+			      'nfs_server' (hostname or IP address of
+			      NFS server) to be set.
+	      jffs2: (legacy) load kernel from NAND partition 'linux'
+			      and mount rootfs (fstype JFFS2)
+			      from partition 'rootfs'.
+
+cpu_clk       <CPU freq [MHz]> CPU clock frequency set after boot.
+
+touchpanel    {tsc2007|edt-ft5x06|imx28-lradc} type of touchpanel.
+	      No touchpanel will be enabled when unset.
+
+otg_mode      [host|device|none] operation mode of the USBOTG port
+
+video_mode    <one of the display names from the Glyn Family Concept or
+	      a video mode as understood by Linux fb_find_mode() function
+              (e.g.: 640x480MR-24@60)>
+	      LCD interface will be disabled when unset.
 
-cpu_clk       <CPU freq [MHz]>
-touchpanel    {tsc2007|edt-ft5x06}
-otg_mode      [host|device|none]
-video_mode    <video mode as understood by Linux fb_find_mode() function>
-              e.g.: VGA-1:640x480MR-24@60
 baseboard     {stk5-v3|stk5-v5} selects type of baseboard
+	      'stk5-v5' setting disables USB Host mode on USBOTG port
+	      and redefines the LCD0 pin as CAN transceiver control pin.
+	      Strings not starting in 'stk5' prevent the STK5 specific
+	      pad initialization to be done.
+
 splashimage   either: memory address (e.g. ${loadaddr}) of a BMP file
 	      to be displayed instead of the built-in logo. Since NAND
 	      flash is not accessible in a memory mapped fashion,
@@ -72,6 +105,7 @@ splashpos     (when 'splashimage' contains a memory address) the
 Note: Some variables (like 'cpu_clk' or 'splashimage') may render the
       board unbootable if incorrectly set. Therefore these variables
       will not be evaluated in case the board has been reset through a
-      watchdog reset or a character is available on the serial console
+      watchdog reset or <CTRL-C> is detected on the serial console
       during startup to give the user a chance to recover from this
-      situation.
+      situation. You should press and hold <CTRL-C> before applying
+      power to the module, for this to work.