From: Lothar Waßmann <LW@KARO-electronics.de>
Date: Wed, 14 May 2014 08:39:28 +0000 (+0200)
Subject: doc: karo: added description of boot_mode variable
X-Git-Tag: KARO-TX-2014-05-29~2
X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=commitdiff_plain;h=6a7944fac73f977eb71755da8d3d1bfd98f0d74a

doc: karo: added description of boot_mode variable
---

diff --git a/doc/README.KARO-TX28 b/doc/README.KARO-TX28
index ec63696515..c5a1fe13ad 100644
--- a/doc/README.KARO-TX28
+++ b/doc/README.KARO-TX28
@@ -47,6 +47,25 @@ 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.