I am able to rebuild the kernel and u-boot with the changes you described. Your u-boot patch seems to apply to a more recent u-boot. I am using the one from PSP 04.02.00.00, but I inserted the change in the appropriate place.

I reflashed the kernel and root filesystem using "nandecc bch4_sw", and x-loader and u-boot with "nandecc hw 2" in u-boot. The initial boot-up of the filesystem appears okay. Then, I get the a bunch of "BCH decoding failed" on the next reboot. Any idea what this could be?

Jeremy,

I believe all the correct steps were taken. I would like to see the log to see exactly where the BCH decoding errors are coming from. Also, I just recalled that we added a section to our Linux User's guide about applying this patch and burning the images. Send me the logs and you can take a look at the guide to see if anything was missed.

[1] http://support.logicpd.co...talid=0&EntryId=2798
[2] http://support.logicpd.co...talid=0&EntryId=1431

Hi Steve,

 Here is how I loaded the root filesystem and kernel, and the results.  The new u-boot was loaded before.  Let me know if you have questions.  I think that I loaded it correctly.

 

Thanks,

Jeremy

 

 AM3517_EVM # mw.b ${loadaddr} 0xff ${kernel_size}
AM3517_EVM # nand erase ${kernel_st} ${kernel_size}

NAND erase: device 0 offset 0x280000, size 0x500000
Erasing at 0x760000 -- 100% complete.
OK
AM3517_EVM # mmc init
No MMC card found
AM3517_EVM # mmc init
mmc1 is available
AM3517_EVM # fatload mmc 0 ${loadaddr} uImage
reading uImage

2441620 bytes read
AM3517_EVM # nandecc bch4_sw
4 BIT SW ECC selected
AM3517_EVM # nand write ${loadaddr} ${kernel_st} ${kernel_size}

NAND write: device 0 offset 0x280000, size 0x500000
 5242880 bytes written: OK
AM3517_EVM # mw.b ${loadaddr} 0xff ${fs_guess_size}
AM3517_EVM # nand erase ${fs_st} ${fs_size}

NAND erase: device 0 offset 0x780000, size 0x1f880000
Erasing at 0x1ffe0000 -- 100% complete.
OK
AM3517_EVM # fatload mmc 0 ${loadaddr} rootfs.jffs2
reading rootfs.jffs2

7085600 bytes read
AM3517_EVM # nand write ${loadaddr} ${fs_st} ${fs_guess_size}

NAND write: device 0 offset 0x780000, size 0x2000000
 33554432 bytes written: OK
AM3517_EVM # printenv
baudrate=115200
mmcargs=setenv bootargs console=${console} root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait
loadbootscript=fatload mmc 0 ${loadaddr} boot.scr
bootscript=echo Running bootscript from mmc ...; source ${loadaddr}
loaduimage=fatload mmc 0 ${loadaddr} uImage
mmcboot=echo Booting from mmc ...; run mmcargs; bootm ${loadaddr}
dieid#=582e000100000000016b1e191901d008
ethact=DaVinci EMAC
loadaddr=0x82000000
xloader_st=0x0
xloader_size=0x80000
uboot_st=0x80000
uboot_size=0x1e0000
kernel_st=0x280000
kernel_size=0x500000
fs_st=0x780000
fs_size=0x1f880000
fs_guess_size=0x2000000
rf_blank_ram_xl=mw.b 0x82000000 0xff 0x80000
rf_blank_ram_ub=mw.b 0x82000000 0xff 0x1e0000
rf_blank_ram_kn=mw.b 0x82000000 0xff 0x500000
rf_blank_ram=mw.b 0x82000000 0xff 0x2000000
rf_er_xloader=nand erase 0x0 0x80000
rf_er_uboot=nand erase 0x80000 0x1e0000
rf_er_kernel=nand erase 0x280000 0x500000
rf_er_fs=nand erase clean 0x780000 0x1f880000
rf_get_xloader=mmc init; fatload mmc 0 0x82000000 MLO
rf_get_uboot=mmc init; fatload mmc 0 0x82000000 u-boot.bin
rf_get_kernel=mmc init; fatload mmc 0 0x82000000 uImage
rf_get_fs=mmc init; fatload mmc 0 0x82000000 rootfs.jffs2
rf_wr_xloader=nandecc hw 2; nand write 0x82000000 0x0 0x80000
rf_wr_uboot=nandecc hw 2; nand write 0x82000000 0x80000 0x1e0000
rf_wr_kernel=nandecc bch4_sw; nand write 0x82000000 0x280000 0x500000
rf_wr_fs=nandecc bch4_sw; nand write 0x82000000 0x780000 0x2000000
rf_xl=run rf_blank_ram_xl; run rf_er_xloader; run rf_get_xloader; run rf_wr_xloader
rf_ub=run rf_blank_ram_ub; run rf_er_uboot; run rf_get_uboot; run rf_wr_uboot
rf_kn=run rf_blank_ram_kn; run rf_er_kernel; run rf_get_kernel; run rf_wr_kernel
rf_fs=run rf_blank_ram; run rf_er_fs; run rf_get_fs; run rf_wr_fs
rf_all=run rf_xl; run rf_ub; run rf_kn; run rf_fs
bootcmd=run nandboot
bootdelay=2
bootfile=uImage
console=ttyO2,115200n8
nandargs=setenv bootargs console=ttyO2,115200n8 root=/dev/mtdblock4 rw rootfstype=jffs2
nandboot=echo Booting from nand ...; nandecc bch4_sw; run nandargs; nand read 0x82000000 280000 400000; bootm 0x82000000
stdin=serial
stdout=serial
stderr=serial
ethaddr=5c:6b:32:0c:7e:fe
filesize=6C1E20

Environment size: 2146/131068 bytes
AM3517_EVM # boot
Booting from nand ...
4 BIT SW ECC selected

NAND read: device 0 offset 0x280000, size 0x400000
 4194304 bytes read: OK
## Booting kernel from Legacy Image at 82000000 ...
   Image Name:   Linux-2.6.37
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    2441556 Bytes = 2.3 MiB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
±xx8ßjkobkÙ?·'lß­;Ö·¼¶ímMÛxm·n=JÝbkïkkek}ÍÙ¹ûknu}½ÿóþºjqØ»eoøz%2¾ÛغûoùÛzÿ_ß·Úz[¶×ëÞ×ÿ[Iù+rÉBhy¿z4Ù²zz]Ø_«{^ïÕ×óûÛ»KÓû»K?ûRû=»£kÉù)÷òûÿhxi}lÚoëÙnosboxioyÙÛ­
                                                                                                                                                            _biyß²xÙÙ²z])^Oé½)u·m-{Ûû
                                                                                                                                                                                     Û_ËË_¶¬ÛëW¿[·ïÚº[ËK[-)úm[Øü+ZÉÂÙÙ¾xxØÙxy_-k{eeûòÿûoú    ögku÷²ózcýk}mk}uzg)¹yYÙ}ÿó÷òyÿzûYº¾­[Ùh)ÙxoÙÙ2y¹x_´OÛÙ©(«MYÙjiõöwi{e²{i¿ÿùɳûÂoíþÛ²h)r¿ÙÙ²|])biKKòåk}YÚ{me¹h=kioOÙ~²óö"yMÏ[r)jyoÙ½xÝ·s]Ø{úúiÉ¿í¯×ýÉÚþûôûkmmzgiJ[)µjhy¿²=ÛÛ»¶ßhgÛyùßme÷ióg{Ùÿÿcx¯ËùËÛ'æ÷w)·K×nÝÚÿn÷í×ËfÛYûuog^²Ýb;ïMMSÚÙkIÙ")2/5²}"ÿmeò_i{k)ûóx_i=ËÛ#Ó ¢K®»³ßrËÛ#ù
                                                                                                                    OËË
                                                                                                                       Ûiékî¼É
                                                                                                                              KO{ÛËv«zûëÉúÿkußö[þirûk?ï¥Û[ùÊ×'ö¿û»o{óöjki¿[r¶þþþ_?ÿþý7{ÅÙÕ~k^ݲ³KÍÉK+JËz˯~/«ÖËûµKûö«{V¾Ý2ó¾z{)r}{r){÷v{¿³2(Yúb»yØÙkÚ{­                                                        ÙÙb   ¹o±¶MMßo[mi{¾eëór_iµón{{)ju{r{)òmû;ÛÛKÙɲËËKÚH½KÛr)r)¾³}{Ó[÷ëÍó6}9¶?ke_úñl³?9x{yßÙ}¼YÛ¶9Ûßrmiùß{Y_n[íÿ÷nmr{m6NËk'ÖÉroò{)-925-*Û¤h)Ù²/MÛ¶yyÚ_Òtk}Y6?oY_ÞZûº)ùzokmÙooÙsm²8²8¹oi[¶yÙÒ÷ûöj%m{ùÿsØ¿³23MK[Ùj)²¾³6{MWùkiOßo~ɳ-Ùz{9zhûyzÿmdi{myûÛ÷÷h{Ywû··îÓÇÉKOËîÛëëç?ÉËÍÅå»Ó
                                                                                                                  JËCKOsÛ¯ÏëÛëMéë×/þK¾örkiíu?-K¶mûó/r{)ögo{imYÚo{oÛÒÿõo)û+Y¿Û·[w¿ÛïYÛÉ¥kýµÝ5ÒþÉKK£ïoûÛËûÛëKûõÍ­·KÙòó(Û}oÿɹ!2 m_»z]ØÛ³kiiþ÷buKÛ¾ëkÛÛ{ý{kY¹{¶í}ëÝzMK[)Ùb)¾25y³ryß}?¬Kýmòcße{¾ÚÛ[ÚÛËjKË+É÷ÉiYùimß"mek÷g}9
                                 jích}yùõz)òioK×[)"i)¾²?yM_¿6?_i[û¶{ßK{kÛ_É-ÿók"gooæ¾no+[))ror[M=ßhm}ójmimlÛßo¾K¹ÛÍùÂÛ
                                                                                                                      Vm[KËUÛ­ÃjgzYÿ²íÿí÷bkoÿ¿{ËÛ«fmßm¹xM¹9x)]Û[ZªÒËIÒ©ê]Ú·5géÉKKO{Úûû¯ºËïroYê:)zYßoo]Û¯yÙy{öÿëÿþjoiÛ[¶_Ú2MK[)Ùj)2/292{])Ûúhûo}yY¿ìmÚYhósi)öñbmm)Ù¯ßîÚYþ÷Úon»9Ùio{ûm±{)³¾j¸{»ÚIÙ)¹o{9~5{O_ÒNY¯½)Rm¶íoßy·^_6^ùoûÿkoÿÙöcmiþy³MK[õhmÿtzib)²¾28ݹýj[èK{)ZmÖ?{ÉkÙ²÷ly2|zco?oKlÛÛþ_ëû¶ÚkHØʲx/²:x{yMºoI©m÷û{}Y¹?[b×¾ÞI»{óo¾ÞKWÖÿd}mm¾J[)²hrßryݶ29×I©XKÝ"ZmÖµÛkÛ²gùjOg[û}oM¸ùikkký)ry¾³³¶·}}])ûÿj{kimö}mmùso]ÙrY_ÿn]yïÛ²iûmoi}þ|)/[)Ùi)²nöM[·ÞÍߺٹiY¿Ýj9z=2o9Û··2)ûro{¾h6Øòo{v{ß2IZY2{úiùûþw)mÿóbìgmb)²h9ßs·y5¶r])omñò_}iù~Or{Ø~úûo2i}ßMÛ[zfÿ¿Ýi9x)µir]Ò¿r)bi{Øk)«ZTjI×Yé\9OKÉKKO{ÛÛËë?ÛëËûµÍÃ}եɳsÊÒJëëyOMi}Mw{-{oßÝ:¶óz9)Ýk{y)})w{iû{)i)ß_Yé)×Iûë3/KKKË{ÛÛÛÛÖÛïËöýÏÉ{»Çr}Ï2{ØötyO[¹iûbíß[O2x=;xr9y91hiõyÙ¿hs[·ÚÛ?múOMYéhÝYk×ûIý[)j)"xr9Û;7]óÿns«ëvfÛÙ{OÛ_Øo¿ikmyÝÓÍ[b)r9ßvݳz=Ý]ò{mº(Û¯wWm)ÿk_V_[Hù[)hrØ5¿9zº]Ùþÿoyßmoûõ~mÙnoiû÷fMÛh)i¾w~{yÓ_ßoys?rm}möeûkgu)Ýÿ~mûOÿÙÉ÷mkYùiÿw{ýhkYÙóÝúrÿûomb)¹yß·{~MÝzßëcx¿}ßviw{oÙ»go}:)ßJ[Øb)r9~|=v]Xø_ûi~Ûro{X{;co3;¹oY_í÷ÛÿnÝÙkYn[ØisølÝYØmc}gosß9oI¿oý)YûYÚösknm                      K{.Ú»~{Ûÿ_¶Û+»mYùrË·koû/x+ÝK[b)rÙ¾7}2}y9_)²y[)h9n;69;9r]]mjMW)zVuÉ7Ù¹Ûo{o]ÛW_véMø{ÊؽÛYÿiwmÿmÿv)foz)VIO[iÝvYIú[)2)y/~;v=29_?ûkß­/I»[nY¹m[¿or}ÿ÷{mv)?Ûkßk-ßgoû{û÷{mn)r{ó½[½c;Ím[Ù9mÃÏ{hi)sovßÍmï»M½Û¶m/_VîZ¿o}zm2mþ{ß{Yomr){YoI»oùÙMù[h)r9;M¹;ËÞOÙ6~ÛòO·Y÷l'
J{b)b){/{=w9}?_)vi»koci­íhmûoÝ«[ë+Ývm.ßY»)¹iyh[mÊ»oûnkfow             Y»mbyw{_             [ïkm:)«[Vî-{Ëß-iýh:xK9¿x5iz{fNÝ<)]«Kr)o
                                                                              [)b)b9>=7i;+¯                                       [    6.233612] VFS: Mounted root (jffs2 filesystem) on device 31:4.
[    6.240234] Freeing init memory: 188K
init started: BusyBox v1.17.4 (2013-10-07 15:59:13 EDT)
Initializing random number generator... done.
Starting network...
ip: RTNETLINK answers: File exists
[    8.369995] davinci_mdio davinci_mdio: resetting idled controller
[    8.377227] net eth0: attached PHY driver [SMSC LAN8710/LAN8720] (mii_bus:phy_addr=ffffffff:00, id=7c0f1)
ip: RTNETLINK answers: File exists
Opened /dev/fpga_dma

===================================
 JTAGRunner (JRunner) Version 2.4
 Altera Corporation
 JRunner 2.4 supports
 ByteBlaster II and ByteBlasterMV.
===================================
Info: Chain Description File: "/usr/share/FPGA/ExtrelFPGA.cdf" opened..

Info: Parsing CDF...
family: CYCLONE IV(21)
Info: Verifying device chain...
Error: JTAG chain broken!
Error: Bits unloaded: 0x0
Load failed, MerlinServer not started

Welcome to Buildroot - Extrel
buildroot login: root
Password:
[root@buildroot ~]# reboot
The system is going down NOW!
Sent SIGTERM to all processes
Sent SIGKILL to all processes
Requesting system reboot
[   45.457763] Restarting system.


Texas Instruments X-Loader 1.51 (Aug 16 2011 - 17:36:37)
Booting from nand . . .
Starting OS Bootloader...


U-Boot 2010.06 (Dec 13 2013 - 16:57:23)

OMAP34xx/35xx-GP ES1.0, CPU-OPP2 L3-165MHz
AM3517EVM Board + LPDDR/NAND
I2C:   ready
DRAM:  256 MiB
NAND:  HW ECC [Kernel/FS layout] selected
512 MiB
In:    serial
Out:   serial
Err:   serial
Die ID #582e000100000000016b1e191901d008
Net:   davinci_emac_initialize
Ethernet PHY: GENERIC @ 0x00
DaVinci EMAC
Hit any key to stop autoboot:  0
Booting from nand ...
4 BIT SW ECC selected

NAND read: device 0 offset 0x280000, size 0x400000
 4194304 bytes read: OK
## Booting kernel from Legacy Image at 82000000 ...
   Image Name:   Linux-2.6.37
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    2441556 Bytes = 2.3 MiB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
1÷þfÍÞeMùI[³k[ØøKB#Ë{§§£.ï%z=IéKVß»_÷²vo)û[·öhgËöûoý®mßZÛiiÿ¹ýoÞLÙ+iɹ:¯zxÙ²xxßKùµgYo]ûþö:)ûgk}¶îY»­Ûº}mßß¹e)Ùy5Ù}o{tòxo{ögm/Jÿ²ji)Ù¾xyx¹yØ×Éë+]+mÓÓÙÙúkwö÷ózYÚzi¿mÛ+7{Ok¶ú[i)b²¿{ÛWbiK*[Û+kvmÙ{ÿik)ßòmo­Ù>)üÝÚ²_KK#JkKËËã˧úGi×µª{Ú¯_î¯ß¾ßW[úm+W­-[Û½÷öJ{Ù²*Ùxo9yÙMKKO{Ëï~Ûûë¥{ÿcx_iI«;¾×Û¶ûnÚ#fÇÍÉÒK¶kÙíùÊ·BKëÉëËË'ÛJ{ËÇ{líßs9397{_Úr¾moÛoÞúµ¥ÓÿKÓ¶½Ûû[ÓßÛKÂ÷öyÛ¹i»)»9r)ö³~MÙbevÙ|y²h-m¯JykI¹)Ùµ¾xy[çoN_íórßmÙûikYÜ)ëóx_m{k¿yÝjoe·öÿò{u¹ci¿_nYwí6_¿ÏõÖKÙÕþóy¹yºb3oO^ûIÚ                                                                                                      ÚkZý-)[zfÍ×MoNM[ï×I»¾mëúû[{ïÉaûÙ³¿xØÙÙ:)ûóóv=%gemÉ÷w)öóûme»m)½egz)9ß²m{{ò{)¿±²³KÉCKO{ËÛËNû»ëUß¾[[3ÖÚ¹il{òroû÷boo)û);{{öe[Vm[yÙØwi}j)õòòoûÙ-9²yMÍ[%"))r/MÙ292])rkYOÛo^¸{m²1Û³:)ûkimY³)reyÿ÷jûmí/ßß¾ÓikJØb)².s{²5ÛM-      ÷íþOÛ¶ooJøòÿkåhïöÙ7­xÙÙy)ûY}ûyûz÷òòor)-y{9K×{i)²)9¾±³³{9ßûóii¿÷iõÿÛû¶k×ÉÍ»¶n[ÿo}oûY¯KÅ[2(xo{{=x9r])[]¾lÛÛ²½gß²vgwþÛË/¾jymzÛºµmrimßbmy¬Fû¶ú;Ú*2®237|=³ßi[]oíKüözk)o]¾mÛÛúùcn9Ý)ú÷w{Yû÷)ûù»[Ò«ßKV½ËkÙ¯xým½Y¶¿ool})momõJ[)¹!ro½{ÍMÛ[_Û[·?lKýllÛßoíÛ¶ûzkßz)mÿi)~yyYÝhyûoMÙj)"yo[·Û¶oo×É߶~_ii}[·~e¶[_,}ÛkIþÛÛÛ[Úßo·ë××ÉZ~nZYnÛöikmmhm¿}{iynoJÞoÞÉûûY»½)±¾h92:xyÝYnKKÏKFKKïÛûÛ˧֡{/TÝZm¶¿nßÙ¹Yò)ùroûÿkom)nYimy³K[)¹)rß=ÝÛzýh[è}÷ÚkÛ{û}m{mûb}»yöòioóyo{úÿoû}mYcikÊÒ²b9·:¶vyOÙ×ÒRYKÝRmÿm?_ß¾y÷}kyöòónózo{v)m¯[·ëk®ÝÉCKO{ÛûëÊ·¾úÛM;)©÷wi{¹m{m©)ûóx)NOSv}o9¢jy­¿mÚY·¿elh}{Yëþzuÿom]¶Im¹»%IÙb¾26yÛM¿])ÿÿsy_io[oy¹_»iûþ÷zK§[)jbyoþÿbmËÉ^î][¿Û_-mZ¾mʺymÛyÉYÿö{i÷sz)MÙr=²jo{»m{Øzm)»yÏky}ms)KÛh)2h9oÙ8û¦_Í_¸Këë[7ö÷û{iËj{Or/2(ÞIïë»hº[}mMY©Y)b)ËkÙ²Øz9KÙr6h[m­hIyûÞbIþsoËÍëÚÒr)2/Ù:9¶ßjmÿVKÖ¾m·_Öh·_lß[z[ï¯ÚùËOKKïÛËË˶֡Kÿj{?m__3ßwnû«ËÛÇÝKÝöw{eûMûmÉÙ)2o{;9oÙ}_Øko÷ójmm}þw{2mYmÛû[))M9v=º])w{¹9:)­Oú­Zö}mÙ»{v9vWÒz}s-~¯ú~îömo]ßïÛY¹i¾¯ß>ÿou)ßv«jyyon{oojo[yý¿oiÿön92{M¥[)2h)rG7{9r=zÝ)z9Øz9²x9²z9rmØz928xØgRü[i)j9~;v=2;M×Òomcy_mY»ilYYù)kÉ»y¹m)ßmù[    2.398864] BCH decoding failedº/;oM-r9M9½;;»icmzmYù_wmv/o9z)ÿg÷)ÿÛ÷nÝÒkismikvi»iûo)~i~mn¿oI¹{;r=3?J;ÚÒj {z=w9_O[iÝ_Yûkúlë]­÷z2[Y»)ry»o/IÚÿk}ki~)vi{Û«»'Ú
[    2.434722] BCH decoding failedo¿}ÿ{=oÙ¹k½ivm?«ûg^3)rir}j6^Ò~Yùico»i~Jûh9_              [h)b9ß|;MÍ)z{9w=
[    2.470520] BCH decoding failedj/k­ù[hiM=2;O9_)~[[­ÓB+ísibmyë[û³×Í;+rkÿoþ­~Ê {i~mryÛ·?ïK¹MYjÜ]mz}gosi~)s}ùyr}gmn
[    2.506530] BCH decoding failed
[    2.542572] BCH decoding failed
[    2.593322] BCH decoding failed
[    2.629150] BCH decoding failed
[    2.664947] BCH decoding failed
[    2.700958] BCH decoding failed
[    2.737030] BCH decoding failed
[    2.754547] Empty flash at 0x006c1e20 ends at 0x006c2000
[    6.561431] JFFS2 notice: (1) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found.
[    6.581085] VFS: Mounted root (jffs2 filesystem) on device 31:4.
[    6.587677] Freeing init memory: 188K
[    6.675048] BCH decoding failed
[    6.710815] BCH decoding failed
[    6.746643] BCH decoding failed
[    6.920471] BCH decoding failed
[    6.956329] BCH decoding failed
[    6.992095] BCH decoding failed
[    7.033325] BCH decoding failed
[    7.069091] BCH decoding failed
[    7.104919] BCH decoding failed
[    7.598205] BCH decoding failed
[    7.634063] BCH decoding failed
[    7.669830] BCH decoding failed
[    7.750427] BCH decoding failed
[    7.786254] BCH decoding failed
[    7.822082] BCH decoding failed
[    7.859222] BCH decoding failed
[    7.895080] BCH decoding failed
[    7.930877] BCH decoding failed
init started: BusyBox v1.17.4 (2013-10-07 15:59:13 EDT)
[    8.004608] BCH decoding failed
[    8.040435] BCH decoding failed
[    8.076202] BCH decoding failed
[    8.112335] BCH decoding failed
[    8.148101] BCH decoding failed
[    8.183898] BCH decoding failed
[    8.275939] BCH decoding failed
Initializing random number generator... [    9.362274] BCH decoding failed
[    9.398040] BCH decoding failed
[    9.433868] BCH decoding failed
[    9.470611] BCH decoding failed
[    9.506408] BCH decoding failed
[    9.542236] BCH decoding failed
[    9.592559] BCH decoding failed
[    9.628417] BCH decoding failed
[    9.664184] BCH decoding failed
done.
Starting network...
ip: RTNETLINK answers: File exists
[    9.930999] davinci_mdio davinci_mdio: resetting idled controller
[    9.938079] net eth0: attached PHY driver [SMSC LAN8710/LAN8720] (mii_bus:phy_addr=ffffffff:00, id=7c0f1)
ip: RTNETLINK answers: File exists
Opened /dev/fpga_dma

===================================
 JTAGRunner (JRunner) Version 2.4
 Altera Corporation
 JRunner 2.4 supports
 ByteBlaster II and ByteBlasterMV.
===================================
Info: Chain Description File: "/usr/share/FPGA/ExtrelFPGA.cdf" opened..

Info: Parsing CDF...
family: CYCLONE IV(21)
Info: Verifying device chain...
Error: JTAG chain broken!
Error: Bits unloaded: 0x0
Load failed, MerlinServer not started
[   10.273437] BCH decoding failed
[   10.309814] BCH decoding failed
[   10.345611] BCH decoding failed
[   10.381378] BCH decoding failed
[   10.418060] BCH decoding failed
[   10.453887] BCH decoding failed
[   10.489654] BCH decoding failed
[   10.526580] BCH decoding failed

Welcome to Buildroot - Extrel
buildroot login: root
Password:
[   22.489501] BCH decoding failed
[   22.562591] BCH decoding failed
[   22.600341] BCH decoding failed
[   22.636566] BCH decoding failed
[   22.674468] BCH decoding failed
[root@buildroot ~]#

Jeremy,

I am unable to spot the error. It looks correct, but obviously you are having some ECC issues. Go through the Linux Users Guide and follow each command exactly so I can more easily spot an error in your commands if it doesn't work the second time.

I did notice that you are using nand write instead of nand write.i, but I have checked the source for this command and it doesn't seem to make a difference. Regardless, also use the .i suffix when it is used in the guide.

Hi Steve,

I figured out what was causing the problem - when I was flashing the custom filesystem, I was using a write size that was too large. When I wrote the flash using the filesystem size rounded to the next highest page, I no longer saw the "BCH decoding failed" message.

So far, so good with the ECC change - I ran the two failing boards overnight, and am not seeing a problem. I will run it longer to make sure there is no error.

I ran the problem boards for about a week, and have not seen a problem.  This appears to be the only problem.  Thank you.

When the AM3517-SOM-M2 product has a new hardware revision, does LogicPD have some automated way to notify people about this? I am trying to think of ways that our client and I can be notified ahead of time of hardware changes and plan ahead for any needed software changes.

I guess we would also want to know of newly discovered errata as well, when the errata document has changed.

Jeremy,

I glad to hear that you have resolved the issue.

Registering the kit should put you on a list to receive the updates. Another way to get them is through subscribing to the AM3517 forum [1][2]. In the past, some have not received the updates, so as an extra measure we started posting them to the forums. Will this work for you?

[1] http://support.logicpd.co.../aff/12/Default.aspx
[2] http://support.logicpd.co.../aff/13/Default.aspx

Is there any way I could sign up a couple different email addresses to receive updates?

Jeremy,

1. You can register the kit multiple times with different emails

Or

2. You can have each of the emails registered and subscribed to the AM3517 forum. 

Or

3. Do both 1 and 2