I am trying to update the mtd partitions on imx6ul platform using mfgtools . I have created a .xml script Everything runs without issues until I want to flash the new barebox bootloader using kobs-ng tool. UTP: received command '$ mount -t debugfs debugfs /sys/kernel/debug' UTP: executing "mount -t debugfs debugfs /sys/kernel/debug" UTP: sending Success to kernel for command $ mount -t debugfs debugfs /sys/kernel/debug. [ 6.009463] utp_poll: pass returned. UTP: received command '$ mount | grep ^debugfs' UTP: executing "mount | grep ^debugfs" debugfs on /sys/kernel/debug type debugfs (rw,relatime) UTP: sending Success to kernel for command $ mount | grep ^debugfs. [ 6.271066] utp_poll: pass returned. UTP: received command '$ flash_erase /dev/mtd0 0 0' UTP: executing "flash_erase /dev/mtd0 0 0" Erasing 128 Kibyte @ 64004e0000 -- -1 % complete UTP: sending Success to kernel for command $ flash_erase /dev/mtd0 0 0. [ 6.530622] utp_poll: pass returned. UTP: received command 'send' UTP: sending Success to kernel for command send. UTP: received command '$ kobs-ng init -x -v --chip_0_device_path=/dev/mtd0 $FILE' UTP: executing "kobs-ng init -x -v --chip_0_device_path=/dev/mtd0 $FILE" MTD CONFIG: chip_0_device_path = "/dev/mtd0" chip_1_device_path = "(null)" search_exponent = 2 data_setup_time = 80 data_hold_time = 60 address_setup_time = 25 data_sample_time = 6 row_address_size = 3 column_address_size = 2 read_command_code1 = 0 read_command_code2 = 48 boot_stream_major_version = 1 boot_stream_minor_version = 0 boot_stream_sub_version = 0 ncb_version = 3 boot_stream_1_address = 0 boot_stream_2_address = 0 -- We add the 1k-padding to the uboot. .tmp_kobs_ng: verifying using key '00000000000000000000000000000000' .tmp_kobs_ng: is a valid bootstream for key '00000000000000000000000000000000' mtd: Linux[ 6.693158] ------------[ cut here ]------------ [ 6.698005] Kernel BUG at c057cdfc [verbose debug info unavailable] [ 6.704291] Internal error: Oops - BUG: 0 [#1] SMP ARM [ 6.709449] Modules linked in: [ 6.712552] CPU: 0 PID: 111 Comm: kobs-ng Not tainted 4.8.0 #18 [ 6.718486] Hardware name: Freescale i.MX6 Ultralite (Device Tree) [ 6.724684] task: c3e58000 task.stack: c3e2e000 [ 6.729248] PC is at nand_fill_oob+0x44/0xac [ 6.733546] LR is at mtd_ooblayout_free+0x5c/0x74 [ 6.738272] pc : [] lr : [] psr: a0000013 [ 6.738272] sp : c3e2fca0 ip : c3e2fbf0 fp : c3e2fcc4 [ 6.749770] r10: c3d89800 r9 : 00000100 r8 : 00000000 [ 6.755013] r7 : 00000000 r6 : c3e2fdc8 r5 : de42e0b8 r4 : 00000010 [ 6.761561] r3 : c3e2fc50 r2 : c3e2fc50 r1 : 00000001 r0 : ffffffde [ 6.768109] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none [ 6.775262] Control: 10c5387d Table: 83e6006a DAC: 00000051 [ 6.781023] Process kobs-ng (pid: 111, stack limit = 0xc3e2e210) [ 6.787046] Stack: (0xc3e2fca0 to 0xc3e30000) [ 6.791432] fca0: 00000000 c3e2fcb0 de42e0b8 00000800 00000800 00000000 c3e2fd34 c3e2fcc8 [ 6.799634] fcc0: c057d19c c057cdc4 c3e2fcec c3e2fcd8 c0964e78 c0173f98 de42e0b8 de42e710 [ 6.807838] fce0: c3e2fd34 0000003f 00000000 00000000 00000000 00000010 00000010 c3d89800 [ 6.816039] fd00: 00000100 00000000 60000013 c3e2fdc8 de42e0b8 00080000 00000000 00000800 [ 6.824241] fd20: 00000000 00000000 c3e2fd5c c3e2fd38 c057d6a8 c057ce70 c3e2fdc8 c3e2fd48 [ 6.832444] fd40: 00000000 00000000 00080800 00000000 c3e2fd84 c3e2fd60 c0562670 c057d614 [ 6.840646] fd60: c3e2fdc8 00000800 c0562604 00000051 c3ccb800 bede4ac8 c3e2fda4 c3e2fd88 [ 6.848847] fd80: c055ec9c c0562610 c3e2fdc8 bede4ac8 00000800 00099110 c3e2fedc c3e2fda8 [ 6.857049] fda0: c0564b8c c055ec64 c3e2fdc8 00000002 c0f229e8 00000000 c3e2fe4c c3e2fdc8 [ 6.865249] fdc0: c016f49c c016e4e8 00000001 00000800 00000000 00000000 00000000 00000000 [ 6.873451] fde0: c3d89800 00000010 00080000 00000000 00000800 00000000 00000000 00000000 [ 6.881654] fe00: 00098910 00000000 00099110 00000000 00000001 00080000 c3e2e000 00000000 [ 6.889856] fe20: c3e2fe54 c3e2fe30 c016ec14 c016e4e8 c096101c c3e58000 00000001 c173d414 [ 6.898059] fe40: c3e58000 c3e2e000 c3e2fe74 c3e2fe58 c016ed78 c016ebb4 c0f35cc4 60000013 [ 6.906261] fe60: c0f35cc8 c173d414 c3e2fe84 c3e2fe78 c016ee44 c016ec48 c3e2fedc c3e2fe88 [ 6.914462] fe80: c096101c c016ee3c 00000001 00000000 c056554c c3e2fea0 c0962da4 c014e30c [ 6.922665] fea0: 00000001 c3e2fea0 c3e2fedc c0f35cc4 00000000 c0f35cc4 c3e01dc0 c0304d18 [ 6.930865] fec0: bede4ac8 00000007 c3e2e000 00000000 c3e2fefc c3e2fee0 c056555c c0564130 [ 6.939068] fee0: bede4ac8 de7eef50 c3e01dc0 c02319c4 c3e2ff7c c3e2ff00 c0230fc0 c0565530 [ 6.947269] ff00: de64e8c8 c022d69c 00000002 de5c96a0 ffffff9c c3cdc000 00000000 00000000 [ 6.955471] ff20: c3e2e000 0000002a de64e8c0 de5c96a0 00000002 de64e8c8 c3e2e000 00000000 [ 6.963672] ff40: c3e2ff7c c3e2ff50 c021e030 c02610a0 00000000 c3e01dc0 00000007 c3e01dc0 [ 6.971874] ff60: c0304d18 bede4ac8 c3e2e000 00000000 c3e2ffa4 c3e2ff80 c02319c4 c0230f30 [ 6.980075] ff80: 00097838 00000000 00000001 00000036 c0107fc4 c3e2e000 00000000 c3e2ffa8 [ 6.988278] ffa0: c0107e20 c0231994 00097838 00000000 00000007 c0304d18 bede4ac8 00000000 [ 6.996480] ffc0: 00097838 00000000 00000001 00000036 00098910 00000800 00000800 00097838 [ 7.004682] ffe0: 0003f064 bede4a9c 0001470c b6ebab9c 20000010 00000007 9eff6861 9eff6c61 [ 7.012872] Backtrace: [ 7.015377] [] (nand_fill_oob) from [] (nand_do_write_ops+0x338/0x41c) [ 7.023657] r7:00000000 r6:00000800 r5:00000800 r4:de42e0b8 [ 7.029435] [] (nand_do_write_ops) from [] (nand_write_oob+0xa0/0xc0) [ 7.037627] r10:00000000 r9:00000000 r8:00000800 r7:00000000 r6:00080000 r5:de42e0b8 [ 7.045582] r4:c3e2fdc8 [ 7.048166] [] (nand_write_oob) from [] (part_write_oob+0x6c/0x7c) [ 7.056095] r7:00000000 r6:00080800 r5:00000000 r4:00000000 [ 7.061870] [] (part_write_oob) from [] (mtd_write_oob+0x44/0x5c) [ 7.069713] r7:bede4ac8 r6:c3ccb800 r5:00000051 r4:c0562604 [ 7.075491] [] (mtd_write_oob) from [] (mtdchar_ioctl+0xa68/0x1400) [ 7.083507] r4:00099110 [ 7.086092] [] (mtdchar_ioctl) from [] (mtdchar_unlocked_ioctl+0x38/0x50) [ 7.094629] r10:00000000 r9:c3e2e000 r8:00000007 r7:bede4ac8 r6:c0304d18 r5:c3e01dc0 [ 7.102584] r4:c0f35cc4 [ 7.105167] [] (mtdchar_unlocked_ioctl) from [] (do_vfs_ioctl+0x9c/0xa64) [ 7.113705] r7:c02319c4 r6:c3e01dc0 r5:de7eef50 r4:bede4ac8 [ 7.119474] [] (do_vfs_ioctl) from [] (SyS_ioctl+0x3c/0x64) [ 7.126798] r10:00000000 r9:c3e2e000 r8:bede4ac8 r7:c0304d18 r6:c3e01dc0 r5:00000007 [ 7.134751] r4:c3e01dc0 [ 7.137335] [] (SyS_ioctl) from [] (ret_fast_syscall+0x0/0x1c) [ 7.144922] r9:c3e2e000 r8:c0107fc4 r7:00000036 r6:00000001 r5:00000000 r4:00097838 [ 7.152803] Code: 0a00000c 3a000002 e3530002 0a000000 (e7f001f2) [ 7.158925] ---[ end trace 99ebc33cf53f1bb5 ]--- 4.8 mtd: use new bch layout raw access mode mtd: opening: "/dev/mtd0" Cannot open BCH geometry node: "/sys/kernel/debug/gpmi-nand/bch_geometry" NFC geometry : ECC Strength : 8 Page Size in Bytes : 2112 Metadata size : 10 ECC Chunk Size in byte : 512 ECC Chunk count : 4 Block Mark Byte Offset : 1999 Block Mark Bit Offset : 0 ==================================================== mtd: opened '/dev/mtd0' - '(null)' mtd: max_boot_stream_size_in_bytes = 2097152 mtd: boot_stream_size_in_bytes = 603649 mtd: boot_stream_size_in_pages = 295 mtd: #1 0x00100000 - 0x00300000 (0x00193601) mtd: #2 0x00300000 - 0x00500000 (0x00393601) FCB m_u32Checksum = 0x00000000 m_u32FingerPrint = 0x20424346 m_u32Version = 0x01000000 m_NANDTiming.m_u8DataSetup = 80 m_NANDTiming.m_u8DataHold = 60 m_NANDTiming.m_u8AddressSetup = 25 m_NANDTiming.m_u8DSAMPLE_TIME = 6 m_u32PageDataSize = 2048 m_u32TotalPageSize = 2112 m_u32SectorsPerBlock = 64 m_u32NumberOfNANDs = 0 m_u32TotalInternalDie = 0 m_u32CellType = 0 m_u32EccBlockNEccType = 4 m_u32EccBlock0Size = 512 m_u32EccBlockNSize = 512 m_u32EccBlock0EccType = 4 m_u32MetadataBytes = 10 m_u32NumEccBlocksPerPage = 3 m_u32EccBlockNEccLevelSDK = 0 m_u32EccBlock0SizeSDK = 0 m_u32EccBlockNSizeSDK = 0 m_u32EccBlock0EccLevelSDK = 0 m_u32NumEccBlocksPerPageSDK = 0 m_u32MetadataBytesSDK = 0 m_u32EraseThreshold = 0 m_u32Firmware1_startingPage = 512 m_u32Firmware2_startingPage = 1536 m_u32PagesInFirmware1 = 295 m_u32PagesInFirmware2 = 295 m_u32DBBTSearchAreaStartAddress = 256 m_u32BadBlockMarkerByte = 1999 m_u32BadBlockMarkerStartBit = 0 m_u32BBMarkerPhysicalOffset = 2048 m_u32BCHType = 0 m_NANDTMTiming.m_u32TMTiming2_ReadLatency = 0 m_NANDTMTiming.m_u32TMTiming2_PreambleDelay = 0 m_NANDTMTiming.m_u32TMTiming2_CEDelay = 0 m_NANDTMTiming.m_u32TMTiming2_PostambleDelay = 0 m_NANDTMTiming.m_u32TMTiming2_CmdAddPause = 0 m_NANDTMTiming.m_u32TMTiming2_DataPause = 0 m_NANDTMTiming.m_u32TMSpeed = 0 m_NANDTMTiming.m_u32TMTiming1_BusyTimeout = 0 m_u32DISBBM = 0 m_u32BBMarkerPhysicalOffsetInSpareData = 0 m_u32OnfiSyncEnable = 0 m_NANDONFITiming.m_u32ONFISpeed = 0 m_NANDONFITiming.m_u32ONFITiming_ReadLatency = 0 m_NANDONFITiming.m_u32ONFITiming_CEDelay = 0 m_NANDONFITiming.m_u32ONFITiming_PreambleDelay = 0 m_NANDONFITiming.m_u32ONFITiming_PostambleDelay = 0 m_NANDONFITiming.m_u32ONFITiming_CmdAddPause = 0 m_NANDONFITiming.m_u32ONFITiming_DataPause = 0 m_NANDONFITiming.m_u32ONFITiming_BusyTimeout = 0 m_u32DISBBSearch = 0 m_u32RandomizerEnable = 0 m_u32ReadRetryEnable = 0 m_u32ReadRetrySeqLength = 0 DBBT m_u32Checksum = 0x00000000 m_u32FingerPrint = 0x54424244 m_u32Version = 0x01000000 m_u32DBBTNumOfPages = 0 Firmware: image #0 @ 0x100000 size 0x93800 - available 0x200000 Firmware: image #1 @ 0x300000 size 0x93800 - available 0x200000 -------------- Start to write the [ FCB ] ----- mtd: erasing @0:0x0-0x20000 mtd: Writing FCB0 [ @0:0x0 ] (840) * mtd: erasing @0:0x20000-0x40000 mtd: Writing FCB1 [ @0:0x20000 ] (840) * mtd: erasing @0:0x40000-0x60000 mtd: Writing FCB2 [ @0:0x40000 ] (840) * mtd: erasing @0:0x60000-0x80000 mtd: Writing FCB3 [ @0:0x60000 ] (840) * mtd_commit_bcb(FCB): status 0 -------------- Start to write the [ DBBT ] ----- mtd: erasing @0:0x80000-0xa0000 mtd: Writing DBBT0 [ @0:0x80000 ] (800) * As it can be seen debufs seems to be mounted successfully but still i get : Cannot open BCH geometry node: "/sys/kernel/debug/gpmi-nand/bch_geometry"