If you want compatibility then use u-boot from ezsdk because ti guys added "ecc hw" command to set the ecc mode to software correction or hardware mode. U-boot uses the software mode for all writes, but the kernel uses the hardware correction mode. To swith back and forth you will u-boot from ti 02 нояб. 2013 г. 12:34 пользователь <matti.kaasi...@gmail.com> написал:
> Hi Tom, > Somehow I had missed your answer. I'll try with your advices as soon as I > get time for it. Unfortunately something still more urgent came up. > I'll let you know how it works out then. > Thanks, > Matti > > torstai, 24. lokakuuta 2013 13.23.24 UTC+3 matti.k...@gmail.com kirjoitti: >> >> Hi! >> >> I am working on BeagleBone variant board using Ångström distribution. >> Main difference is that NAND flash is installed on board. In fact my set-up >> sounds pretty much same as in "NAND flash with BeagleBone >> variant<https://groups.google.com/forum/embed/?place=forum/beagleboard&showsearch=true&showpopout=true&showtabs=true&hideforumtitle=true&parenturl=http%3A%2F%2Fwww.beagleboard.org%2FCommunity%2FForums#!searchin/beagleboard/nand/beagleboard/Gbtg8xZ_TNY/0QL5Q01PlbQJ>" >> case. >> >> *Short story:* >> >> UBIFS partition/volume formatted/created in Linux does not work in >> U-Boot. UBI part command in U-boot fails. Later on Linux finds this UBIFS >> corrupted. I don't have any problems if this UBIFS is accessed purely from >> Linux. I have made NAND flash additions from am335x-evm.dts to BeagleBone >> device tree. I have tried with ti,nand-ecc-opt = "bch8" (with kernel >> options CONFIG_MTD_NAND_OMAP_BCH and >> OMAP_ECC_BCH8_CODE_HW) and without. In the latter case those kernel >> options were not active. >> >> *Longer story* = operations and results: >> >> ====================================== >> BOOT => Linux >> >> root@beaglebone:~# cat /proc/mtd >> ddev: size erasesize name >> mtd0: 00020000 00020000 "SPL1" >> mtd1: 00020000 00020000 "SPL2" >> mtd2: 00020000 00020000 "SPL3" >> mtd3: 00020000 00020000 "SPL4" >> mtd4: 001e0000 00020000 "U-boot" >> mtd5: 00020000 00020000 "environment" >> mtd6: 00500000 00020000 "Kernel" >> mtd7: 0f880000 00020000 "File-System" >> >> >> root@beaglebone:~# mtdinfo /dev/mtd7 >> mtd7 >> Name: File-System >> Type: nand >> Eraseblock size: 131072 bytes, 128.0 KiB >> Amount of eraseblocks: 1988 (260571136 bytes, 248.5 MiB) >> Minimum input/output unit size: 2048 bytes >> Sub-page size: 512 bytes >> OOB size: 64 bytes >> Character device major/minor: 90:14 >> Bad blocks are allowed: true >> Device is writable: true >> >> >> root@beaglebone:~# ubiformat /dev/mtd7 >> ubiformat: mtd7 (nand), size 260571136 bytes (248.5 MiB), 1988 >> eraseblocks of 131072 bytes (128.0 KiB), min. I/O size 2048 bytes >> libscan: scanning eraseblock 1987 -- 100 % complete >> ubiformat: 1980 eraseblocks have valid erase counter, mean value is 2 >> ubiformat: 8 bad eraseblocks found, numbers: 70, 281, 310, 964, 1590, >> 1900, 1920, 1977 >> ubiformat: formatting eraseblock 1987 -- 100 % complete >> >> >> root@beaglebone:~# ubiattach -m 7 >> [ 615.304815] UBI: default fastmap pool size: 95 >> [ 615.309712] UBI: default fastmap WL pool size: 25 >> [ 615.314727] UBI: attaching mtd7 to ubi0 >> [ 616.065041] UBI: scanning is finished >> [ 616.092241] UBI: attached mtd7 (name "File-System", size 248 MiB) to >> ubi0 >> [ 616.099551] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 129024 >> bytes >> [ 616.106760] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 512 >> [ 616.113780] UBI: VID header offset: 512 (aligned 512), data offset: >> 2048 >> [ 616.120891] UBI: good PEBs: 1980, bad PEBs: 8, corrupted PEBs: 0 >> [ 616.127267] UBI: user volume: 0, internal volumes: 1, max. volumes >> count: 128 >> [ 616.134839] UBI: max/mean erase counter: 4/3, WL threshold: 4096, >> image sequence number: 1266322069 >> [ 616.144425] UBI: available PEBs: 1942, total reserved PEBs: 38, PEBs >> reserved for bad PEB handling: 32 >> [ 616.154993] UBI: background thread "ubi_bgt0d" started, PID 266 >> UBI device number 0, total 1980 LEBs (255467520 bytes, 243.6 MiB), >> available 1942 LEBs (250564608 bytes, 239.0 MiB), LEB size 129024 bytes >> (126.0 KiB) >> >> root@beaglebone:~# ubimkvol /dev/ubi0 -N rootfs -m >> Set volume size to 250564608 >> Volume ID 0, size 1942 LEBs (250564608 bytes, 239.0 MiB), LEB size 129024 >> bytes (126.0 KiB), dynamic, name "rootfs", alignment 1 >> >> root@beaglebone:~# mkdir /mnt/rootfs >> >> root@beaglebone:~# mount -t ubifs ubi0:rootfs /mnt/rootfs >> [ 1246.100061] UBIFS: default file-system created >> [ 1246.129559] UBIFS: background thread "ubifs_bgt0_0" started, PID 279 >> [ 1246.181635] UBIFS: mounted UBI device 0, volume 0, name "rootfs"(null) >> [ 1246.188687] UBIFS: LEB size: 129024 bytes (126 KiB), min./max. I/O >> unit sizes: 2048 bytes/2048 bytes >> [ 1246.198379] UBIFS: FS size: 248887296 bytes (237 MiB, 1929 LEBs), >> journal size 12515328 bytes (11 MiB, 97 LEBs) >> [ 1246.209066] UBIFS: reserved for root: 4952683 bytes (4836 KiB) >> [ 1246.215270] UBIFS: media format: w4/r0 (latest is w4/r0), UUID >> BBB7B485-B786-43D4-9EF7-F237AF6C707B, small LPT model >> >> root@beaglebone:~# cd /mnt/rootfs >> root@beaglebone:/mnt/rootfs# mkdir testdir >> root@beaglebone:/mnt/rootfs# cd testdir >> root@beaglebone:/mnt/rootfs/testdir# echo testdata > testfile.txt >> root@beaglebone:/mnt/rootfs/testdir# cat testfile.txt >> testdata >> >> >> root@beaglebone:/mnt/rootfs/testdir# sync >> root@beaglebone:/mnt/rootfs/testdir# cd >> root@beaglebone:~# umount /mnt/rootfs >> [ 1774.802970] UBIFS: un-mount UBI device 0, volume 0 >> [ 1774.812940] UBIFS: background thread "ubifs_bgt0_0" stops >> root@beaglebone:~# shutdown -h now >> >> >> ====================================== >> BOOT => U-Boot >> >> >> >> U-Boot# mtdparts >> >> device nand0 <omap2-nand.0>, # parts = 8 >> #: name size offset mask_flags >> 0: SPL 0x00020000 0x00000000 0 >> 1: SPL.backup1 0x00020000 0x00020000 0 >> 2: SPL.backup2 0x00020000 0x00040000 0 >> 3: SPL.backup3 0x00020000 0x00060000 0 >> 4: u-boot 0x001e0000 0x00080000 0 >> 5: u-boot-env 0x00020000 0x00260000 0 >> 6: kernel 0x00500000 0x00280000 0 >> 7: rootfs 0x0f880000 0x00780000 0 >> >> active partition: nand0,0 - (SPL) 0x00020000 @ 0x00000000 >> >> defaults: >> mtdids : nand0=omap2-nand.0 >> mtdparts: mtdparts=omap2-nand.0:128k(SPL),128k(SPL.backup1),128k( >> SPL.backup2),128k(SPL.backup3),1920k(u-boot),128k(u-boot- >> env),5m(kernel),-(rootfs) >> >> >> U-Boot# ubi part rootfs >> ...... looooong list of following two lines >> UBI error: ubi_io_read: error -74 while reading 512 bytes from PEB >> 1975:512, read 512 bytes >> ECC: uncorrectable. >> >> ......then quite menay of following lines >> ECC: uncorrectable. >> ECC: uncorrectable. >> ECC: uncorrectable. >> ECC: uncorrectable. >> >> ...... then rest of messages >> UBI error: ubi_io_read: error -74 while reading 129024 bytes from PEB >> 518:2048, read 129024 bytes >> UBI warning: ubi_eba_copy_leb: error -74 while reading data from PEB 518 >> UBI error: wear_leveling_worker: error -74 while moving PEB 518 to PEB 1 >> UBI warning: ubi_ro_mode: switch to read-only mode >> UBI error: do_work: work failed with error code -74 >> UBI: attached mtd1 to ubi0 >> UBI: MTD device name: "mtd=7" >> UBI: MTD device size: 248 MiB >> UBI: number of good PEBs: 1980 >> UBI: number of bad PEBs: 8 >> UBI: max. allowed volumes: 128 >> UBI: wear-leveling threshold: 4096 >> UBI: number of internal volumes: 1 >> UBI: number of user volumes: 1 >> UBI: available PEBs: 15 >> UBI: total number of reserved PEBs: 1965 >> UBI: number of PEBs reserved for bad PEB handling: 19 >> UBI: max/mean erase counter: 6/3 >> U-Boot# >> >> >> ====================================== >> BOOT => Linux >> >> ubiattach -m t >> >> => >> .... exhaustive list of following blocks: >> [ 184.135917] UBI warning: ubi_io_read: error -74 (ECC error) while >> reading 64 bytes from PEB 268:0, read only 64 bytes, retry >> [ 184.148291] uncorrectable error : >> [ 184.151767] UBI warning: ubi_io_read: error -74 (ECC error) while >> reading 64 bytes from PEB 268:0, read only 64 bytes, retry >> [ 184.163943] uncorrectable error : >> [ 184.167396] UBI warning: ubi_io_read: error -74 (ECC error) while >> reading 64 bytes from PEB 268:0, read only 64 bytes, retry >> [ 184.179564] uncorrectable error : >> [ 184.183016] UBI error: ubi_io_read: error -74 (ECC error) while >> reading 64 bytes from PEB 268:0, read 64 bytes >> [ 184.193837] [<c001051d>] (unwind_backtrace+0x1/0x8c) from [<c022ca67>] >> (ubi_io_read+0x14f/0x1ec) >> [ 184.203171] [<c022ca67>] (ubi_io_read+0x14f/0x1ec) from [<c022cc73>] >> (ubi_io_read_ec_hdr+0x47/0x12c) >> [ 184.212870] [<c022cc73>] (ubi_io_read_ec_hdr+0x47/0x12c) from >> [<c022fc3b>] (scan_peb.part.4+0x1b/0x408) >> [ 184.222843] [<c022fc3b>] (scan_peb.part.4+0x1b/0x408) from >> [<c0230095>] (scan_all+0x6d/0x73c) >> [ 184.231895] [<c0230095>] (scan_all+0x6d/0x73c) from [<c0230a45>] >> (ubi_attach+0x169/0x244) >> [ 184.240591] [<c0230a45>] (ubi_attach+0x169/0x244) from [<c0229373>] >> (ubi_attach_mtd_dev+0x4ff/0x980) >> [ 184.250291] [<c0229373>] (ubi_attach_mtd_dev+0x4ff/0x980) from >> [<c0229997>] (ctrl_cdev_ioctl+0x7f/0x104) >> [ 184.260357] [<c0229997>] (ctrl_cdev_ioctl+0x7f/0x104) from >> [<c009d6b1>] (vfs_ioctl+0x15/0x20) >> [ 184.269412] [<c009d6b1>] (vfs_ioctl+0x15/0x20) from [<c009de57>] >> (do_vfs_ioctl+0x3ad/0x3e2) >> [ 184.278281] [<c009de57>] (do_vfs_ioctl+0x3ad/0x3e2) from [<c009debd>] >> (sys_ioctl+0x31/0x4c) >> [ 184.287157] [<c009debd>] (sys_ioctl+0x31/0x4c) from [<c000c641>] >> (ret_fast_syscall+0x1/0x46) >> [ 184.296279] uncorrectable error : >> [ 184.299721] uncorrectable error : [ 184.303366] UBI warning: >> ubi_io_read: error -74 (ECC error) while reading 512 bytes from PEB >> 268:512, read only 512 bytes, retry >> [ 184.315740] uncorrectable error : >> [ 184.319180] uncorrectable error : [ 184.322821] UBI warning: >> ubi_io_read: error -74 (ECC error) while reading 512 bytes from PEB >> 268:512, read only 512 bytes, retry >> [ 184.335193] uncorrectable error : >> [ 184.338631] uncorrectable error : [ 184.342272] UBI warning: >> ubi_io_read: error -74 (ECC error) while reading 512 bytes from PEB >> 268:512, read only 512 bytes, retry >> [ 184.354643] uncorrectable error : >> [ 184.358082] uncorrectable error : [ 184.361723] UBI error: >> ubi_io_read: error -74 (ECC error) while reading 512 bytes from PEB >> 268:512, read 512 bytes >> [ 184.372704] [<c001051d>] (unwind_backtrace+0x1/0x8c) from [<c022ca67>] >> (ubi_io_read+0x14f/0x1ec) >> [ 184.382032] [<c022ca67>] (ubi_io_read+0x14f/0x1ec) from [<c022cda7>] >> (ubi_io_read_vid_hdr+0x4f/0x134) >> [ 184.391821] [<c022cda7>] (ubi_io_read_vid_hdr+0x4f/0x134) from >> [<c022fd29>] (scan_peb.part.4+0x109/0x408) >> [ 184.401973] [<c022fd29>] (scan_peb.part.4+0x109/0x408) from >> [<c0230095>] (scan_all+0x6d/0x73c) >> [ 184.411116] [<c0230095>] (scan_all+0x6d/0x73c) from [<c0230a45>] >> (ubi_attach+0x169/0x244) >> [ 184.419804] [<c0230a45>] (ubi_attach+0x169/0x244) from [<c0229373>] >> (ubi_attach_mtd_dev+0x4ff/0x980) >> [ 184.429503] [<c0229373>] (ubi_attach_mtd_dev+0x4ff/0x980) from >> [<c0229997>] (ctrl_cdev_ioctl+0x7f/0x104) >> [ 184.439565] [<c0229997>] (ctrl_cdev_ioctl+0x7f/0x104) from >> [<c009d6b1>] (vfs_ioctl+0x15/0x20) >> [ 184.448616] [<c009d6b1>] (vfs_ioctl+0x15/0x20) from [<c009de57>] >> (do_vfs_ioctl+0x3ad/0x3e2) >> [ 184.457487] [<c009de57>] (do_vfs_ioctl+0x3ad/0x3e2) from [<c009debd>] >> (sys_ioctl+0x31/0x4c) >> [ 184.466358] [<c009debd>] (sys_ioctl+0x31/0x4c) from [<c000c641>] >> (ret_fast_syscall+0x1/0x46) >> [ 184.494290] uncorrectable error : >> >> I hope you can find solution for this problem. >> >> Thanks, >> Matti >> > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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