From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rossco Date: Thu, 31 Jul 2014 07:05:18 -0700 (PDT) Subject: [U-Boot] Setting Uboot environment variables from within Linux Message-ID: <1406815518225-185482.post@n7.nabble.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi, I have an issue when attempting to access my uboot variables from within my linux distribution. My set-up is as follows... Cyclone V SoC with ARM Cortex A9 processor running 3.11 kernel (git revision a946a64), uboot version 2013.01.01 - only modification being to configure for QSPI boot and to add some extra environment variables. I am running a QSPI boot configuration, my QSPI has three partitions... 1. Raw partition containing Pre-loader, device-tree and uboot 2. Kernel1 - containing initial kernel 3. Kernel2 - for future updated kernel I have a NAND device offering UBI filesystem. I created the fw_printenv and exported to my development board, created sym link to create fw_setenv. Also copied across the fw_env.config which looks like this (I have not modified this)... # NOR example # MTD device name Device offset Env. size Flash sector size /dev/mtd1 0x0000 0x4000 0x4000 /dev/mtd2 0x0000 0x4000 0x4000 # MTD SPI-dataflash example # MTD device name Device offset Env. size Flash sector size #/dev/mtd5 0x4200 0x4200 #/dev/mtd6 0x4200 0x4200 # NAND example #/dev/mtd0 0x4000 0x4000 0x20000 cat /proc/mtd look like... dev: size erasesize name mtd0: 40000000 00040000 "denali-nand" mtd1: 00800000 00010000 "Flash 0 Raw Data" mtd2: 01900000 00010000 "Kernel Partition 1" mtd3: 01900000 00010000 "Kernel Partition 2" When I attempt to run fw_printenv I get the following error message.. Warning: Bad CRC, using default environment I'm assuming that my config file is wrong but I'm not sure how to change it. Do I need to manually workout where the environment variables are being stored? Should I have a separate environment variables image? If so how do I get that image? Any guidance greatly appreciated :-) Thanks Rossco -- View this message in context: http://u-boot.10912.n7.nabble.com/Setting-Uboot-environment-variables-from-within-Linux-tp185482.html Sent from the U-Boot mailing list archive at Nabble.com.