Dear John Stile, In message <1362532855.20183.135.camel@genx> you wrote: > I am quite confused about partitions in my NAND flash. > > Linux can mount my rootfs, so partitions make sense to the kernel, but > from the shell fw_printenv can't read the uboot environment, not matter > what I use in /etc/fw_env.config.
That means that all settings were incorrect. > dev: size erasesize name > mtd0: 00020000 00020000 "bootstrap1" > mtd1: 00040000 00020000 "uboot1" > mtd2: 001a0000 00020000 "env1" ^^^^^^ mtd2 > mtd3: 00200000 00020000 "linux1" > mtd4: 07c00000 00020000 "rootfs1" > mtd5: 00020000 00020000 "bootstrap2" > mtd6: 00040000 00020000 "uboot2" > mtd7: 001a0000 00020000 "env2" ^^^^^^ mtd7 > mtd8: 00200000 00020000 "linux2" > mtd9: 07c00000 00020000 "rootfs2" > mtd10: 00004200 00000420 "bootstrap3" > mtd11: 00004200 00000420 "env3" ^^^^^^ mtd11 > mtd12: 00039c00 00000420 "uboot3" > mtd13: 00252000 00000420 "linux3" > mtd14: 005ac000 00000420 "rootfs3" > What's that? This makes no sense to me - either you have a single copy of the environment, or two (in case of redudant env). Three copies is not a supported configuration. > I purposefully created more /dev/mtd devices than mtdparts would > require, in order to find which partitions actually contain the uboot > env. mtdparts does not "require" anything. You configure your systems as needed, and then set mtdparts to match that setting. SO the setting comes first (starting in your head or - probably better - on a sheet of paper), and then you set mtdparts as needed. > /dev/mtd4 and /dev/mtd5 create binary equivalent dumps of env1 > /dev/mtd14 and /dev/mtd15 create binary equivalent dumps of env2. The names and use of your partitions is in serious mismatch. Fix this first! > /etc/fw_env.config does not like either of those, saying the crc does > not checkout. > > /etc/fw_env.config: > /dev/mtd2 0x0 0x20000 0x20000 > /dev/mtd2 0x20000 0x20000 0x20000 Well, if you find the environment in /dev/mtd4 and /dev/mtd5, then you should use these in the fw_env.config Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de Making files is easy under the UNIX operating system. Therefore, users tend to create numerous files using large amounts of file space. It has been said that the only standard thing about all UNIX systems is the message-of-the-day telling users to clean up their files. - System V.2 administrator's guide _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot