[U-Boot] fw_setenv broken?

[Steve Sakoman]

On Wed, Nov 17, 2010 at 12:47 PM, Wolfgang Denk <wd at denx.de> wrote:
> Dear Steve Sakoman,
>
> In message <AANLkTikaLbZG5ED=p-_0MWoLOjH=kfna-P8SYAC=Nisx at mail.gmail.com> you wrote:
>>
>> After writing the environment with fw_setenv in linux, u-boot's read
>> of the environment on the subsequent boot always fails with either
>> EBADMSG or EUCLEAN.
>
> Can you read - in U-Boot - any other data written in Linux?
> Ecventually there is some discrepance for example in the use of sw
> versus hw ECC or such?

I just did that experiment!

As I mentioned, after writing with fw_setenv, I get an error in u-boot
(I added a couple of printf's to indicate the offset being read from
as well as any error codes returned):

U-Boot 2010.12-rc1 (Nov 17 2010 - 11:20:23)

OMAP3630/3730-GP ES1.0, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
Gumstix Overo board + LPDDR/NAND
I2C:   ready
DRAM:  256 MiB
NAND:  256 MiB
MMC:   OMAP SD/MMC: 0
readenv: offset = 240000
readenv: nand_read failure = -117
*** Warning - readenv() failed, using default environment

I then immediately tried to use the nand read command to read the same
block, and it was successful!

Overo # nand read 82000000 240000 20000

NAND read: device 0 offset 0x240000, size 0x20000
 131072 bytes read: OK

Not only that, the data read looks correct!

Overo # md 82000000 140
82000000: bd8c0c16 64756162 65746172 3531313d    ....baudrate=115
82000010: 00303032 746f6f62 3d646d63 6d206669    200.bootcmd=if m
82000020: 7220636d 61637365 7b24206e 64636d6d    mc rescan ${mmcd
82000030: 3b7d7665 65687420 6669206e 6e757220    ev}; then if run
82000040: 616f6c20 6f6f6264 72637374 3b747069     loadbootscript;
82000050: 65687420 7572206e 6f62206e 6373746f     then run bootsc
82000060: 74706972 6c6d203b 69206573 75722066    ript; mlse if ru
82000070: 6f6c206e 69756461 6567616d 6874203b    n loaduimage; th
82000080: 72206e65 6d206e75 6f62636d 203b746f    en run mmcboot;
82000090: 65736c65 6e757220 6e616e20 6f6f6264    else run nandboo
820000a0: 66203b74 66203b69 65203b69 2065736c    t; fi; fi; else
820000b0: 206e7572 646e616e 746f6f62 6966203b    run nandboot; fi
820000c0: 6f6f6200 6c656474 353d7961 6f6f6200    .bootdelay=5.boo
820000d0: 72637374 3d747069 6f686365 6e755220    tscript=echo Run
820000e0: 676e696e 6f6f6220 72637374 20747069    ning bootscript
820000f0: 6d6f7266 636d6d20 2e2e2e20 6f73203b    from mmc ...; so
82000100: 65637275 6c7b2420 6164616f 7d726464    urce ${loadaddr}
82000110: 6e6f6300 656c6f73 7974743d 312c3253    .console=ttyS2,1
82000120: 30323531 00386e30 61666564 64746c75    15200n8.defaultd
82000130: 6c707369 643d7961 64006976 64696569    isplay=dvi.dieid
82000140: 32363d23 30306535 62313030 30303066    #=625e00001bf000
82000150: 31303030 39333735 37306165 30663230    00015739ea0702f0
82000160: 64006530 6f6d6976 313d6564 78343230    0e.dvimode=1024x
82000170: 4d383637 36312d52 00303640 61687465    768MR-16 at 60.etha
82000180: 733d7463 3139636d 302d7831 616f6c00    ct=smc911x-0.loa
82000190: 64646164 78303d72 30303238 30303030    daddr=0x82000000
820001a0: 616f6c00 6f6f6264 72637374 3d747069    .loadbootscript=
820001b0: 6c746166 2064616f 20636d6d 6d6d7b24    fatload mmc ${mm
820001c0: 76656463 7b24207d 64616f6c 72646461    cdev} ${loadaddr
820001d0: 6f62207d 732e746f 6c007263 7564616f    } boot.scr.loadu
820001e0: 67616d69 61663d65 616f6c74 6d6d2064    image=fatload mm
820001f0: 7b242063 64636d6d 207d7665 6f6c7b24    c ${mmcdev} ${lo
82000200: 64616461 207d7264 616d4975 6d006567    adaddr} uImage.m
82000210: 7261636d 733d7367 6e657465 6f622076    mcargs=setenv bo
82000220: 7261746f 63207367 6f736e6f 243d656c    otargs console=$
82000230: 6e6f637b 656c6f73 706d207d 74617275    {console} mpurat
82000240: 7b243d65 7275706d 7d657461 61727620    e=${mpurate} vra
82000250: 7b243d6d 6d617276 6d6f207d 62667061    m=${vram} omapfb
82000260: 646f6d2e 76643d65 7b243a69 6d697664    .mode=dvi:${dvim
82000270: 7d65646f 616d6f20 2e626670 75626564    ode} omapfb.debu
82000280: 20793d67 70616d6f 2e737364 5f666564    g=y omapdss.def_
82000290: 70736964 647b243d 75616665 6964746c    disp=${defaultdi
820002a0: 616c7073 72207d79 3d746f6f 6d6d7b24    splay} root=${mm
820002b0: 6f6f7263 72207d74 66746f6f 70797473    croot} rootfstyp
820002c0: 7b243d65 72636d6d 66746f6f 70797473    e=${mmcrootfstyp
820002d0: 6d007d65 6f62636d 653d746f 206f6863    e}.mmcboot=echo
820002e0: 746f6f42 20676e69 6d6f7266 636d6d20    Booting from mmc
820002f0: 2e2e2e20 7572203b 6d6d206e 67726163     ...; run mmcarg
82000300: 62203b73 6d746f6f 6c7b2420 6164616f    s; bootm ${loada
82000310: 7d726464 636d6d00 3d766564 6d6d0030    ddr}.mmcdev=0.mm
82000320: 6f6f7263 642f3d74 6d2f7665 6c62636d    croot=/dev/mmcbl
82000330: 3270306b 00777220 72636d6d 66746f6f    k0p2 rw.mmcrootf
82000340: 70797473 78653d65 72203374 77746f6f    stype=ext3 rootw
82000350: 00746961 646e616e 73677261 7465733d    ait.nandargs=set
82000360: 20766e65 746f6f62 73677261 6e6f6320    env bootargs con
82000370: 656c6f73 637b243d 6f736e6f 207d656c    sole=${console}
82000380: 7275706d 3d657461 706d7b24 74617275    mpurate=${mpurat
82000390: 76207d65 3d6d6172 72767b24 207d6d61    e} vram=${vram}
820003a0: 70616d6f 6d2e6266 3d65646f 3a697664    omapfb.mode=dvi:
820003b0: 76647b24 646f6d69 6f207d65 6670616d    ${dvimode} omapf
820003c0: 65642e62 3d677562 6d6f2079 73647061    b.debug=y omapds
820003d0: 65642e73 69645f66 243d7073 6665647b    s.def_disp=${def
820003e0: 746c7561 70736964 7d79616c 6f6f7220    aultdisplay} roo
820003f0: 7b243d74 646e616e 746f6f72 6f72207d    t=${nandroot} ro
82000400: 7366746f 65707974 6e7b243d 72646e61    otfstype=${nandr
82000410: 66746f6f 70797473 6e007d65 62646e61    ootfstype}.nandb
82000420: 3d746f6f 6f686365 6f6f4220 676e6974    oot=echo Booting
82000430: 6f726620 616e206d 2e20646e 203b2e2e     from nand ...;
82000440: 206e7572 646e616e 73677261 616e203b    run nandargs; na
82000450: 7220646e 20646165 6f6c7b24 64616461    nd read ${loadad
82000460: 207d7264 30303832 34203030 30303030    dr} 280000 40000
82000470: 62203b30 6d746f6f 6c7b2420 6164616f    0; bootm ${loada
82000480: 7d726464 6e616e00 6f6f7264 642f3d74    ddr}.nandroot=/d
82000490: 6d2f7665 6c626474 346b636f 00777220    ev/mtdblock4 rw.
820004a0: 646e616e 746f6f72 79747366 6a3d6570    nandrootfstype=j
820004b0: 32736666 64747300 3d727265 69726573    ffs2.stderr=seri
820004c0: 73006c61 6e696474 7265733d 006c6169    al.stdin=serial.
820004d0: 6f647473 733d7475 61697265 7276006c    stdout=serial.vr
820004e0: 313d6d61 6d004d34 61727570 363d6574    am=14M.mpurate=6
820004f0: 00003030 00000000 00000000 00000000    00..............
Overo #

Any ideas?

Steve