X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=doc%2FREADME.KARO-TX6;h=334b58c728b1d8d56d4e5e6466575440fb114ca8;hb=3a926a304b9f7a74dbe67ae7dc4cb6c7a174c6c0;hp=82fa03ce270c01c68124280380ea107459583780;hpb=28111c99978923db69d0a144cd3013604a5ac466;p=karo-tx-uboot.git

diff --git a/doc/README.KARO-TX6 b/doc/README.KARO-TX6
index 82fa03ce27..334b58c728 100644
--- a/doc/README.KARO-TX6
+++ b/doc/README.KARO-TX6
@@ -4,7 +4,7 @@
 Building U-Boot
 ---------------
 
-Note: There are currently six variants of the TX6 module, that
+Note: There are currently seven variants of the TX6 module, that
       require slightly different U-Boot configurations. They are
       distinguished through the 'TX6' suffix 'Q' or 'U' and the
       numerical suffix of the module name. Replace the '?' in the
@@ -26,12 +26,14 @@ Compiling U-Boot
 ----------------
 export ARCH=arm
 export CROSS_COMPILE=arm-cortexa9-linux-gnueabi-
-make tx6?-??1?_config            (see above Note!)
+make tx6?-????_config            (see above Note!)
 make
 
 
 Flashing U-Boot Image
 ---------------------
+For all TX6 modules except TX6Q-1020:
+-------------------------------------
 If you want to replace a working U-Boot with a new version, you can
 load the new U-Boot image via TFTP or SD-Card and write it to flash
 with the 'romupdate' command.
@@ -43,6 +45,18 @@ on Starterkit-5 baseboard closed). See TX6_U-Boot.pdf for details.
 e.g.: /cdrom/Flashtools/Linux/sbloader/sbloader-x86_32 -m -s /cdrom/U-Boot/target/u-boot-tx6q-1010.bin
 (This command can be used from within the ARMSK-VM)
 
+For TX6Q-1020:
+--------------
+The TX6Q-1020 is equipped with eMMC instead of NAND flash.
+The bootloader, U-Boot environment and DTB is stored in the first boot
+partition of the eMMC device. The command to update the bootloader
+TX6Q U-Boot > set autostart n
+TX6Q U-Boot > tftp u-boot-tx6q-1020.bin
+TX6Q U-Boot > mmc open 0 1
+TX6Q U-Boot > mmc write ${fileaddr} 0 400
+TX6Q U-Boot > mmc close 0 1
+
+
 MfgTool
 -------
 For Windows users the application MfgTool allows the (re-)flashing of
@@ -57,6 +71,25 @@ 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.