kobs-ng 烧写nand中的uboot

如何获取kobs-ng

我是使用buildroot自动编译的imx-kobs，生成了kobs-ng可执行文件。

使用 kobs-ng 烧写 u-boot

1. flash_erase /dev/mtd0 0 0 //擦除uboot所在分区

2. 挂载 debugfs

mount -t debugfs debugfs /sys/kernel/debug

如果不挂载为报以下错误：

[root@localhost:~]# ./kobs-ng init -x  u-boot.imx 
Cannot open BCH geometry node: "/sys/kernel/debug/gpmi-nand/bch_geometry"

3. 用 kobs-ng 烧写 u-boot；默认烧写在 /dev/mtd0 分区，按需修改；

./kobs-ng init -x -v u-boot.imx

[root@localhost:~]# ./kobs-ng init -x -v u-boot.imx 
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: use new bch layout raw access mode
mtd: opening: "/dev/mtd0"
NFC geometry :
        ECC Strength       : 18
        Page Size in Bytes : 2176
        Metadata size      : 10
        ECC Chunk Size in byte : 512
        ECC Chunk count        : 4
        Block Mark Byte Offset : 1950
        Block Mark Bit Offset  : 2
====================================================
mtd: opened '/dev/mtd0' - '(null)'
mtd: max_boot_stream_size_in_bytes = 1572864
mtd: boot_stream_size_in_bytes = 450560
mtd: boot_stream_size_in_pages = 220
mtd: #1 0x00100000 - 0x00280000 (0x0016e000)
mtd: #2 0x00280000 - 0x00400000 (0x002ee000)
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 = 2176
  m_u32SectorsPerBlock = 64
  m_u32NumberOfNANDs = 0
  m_u32TotalInternalDie = 0
  m_u32CellType = 0
  m_u32EccBlockNEccType = 9
  m_u32EccBlock0Size = 512
  m_u32EccBlockNSize = 512
  m_u32EccBlock0EccType = 9
  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 = 1280
  m_u32PagesInFirmware1 = 220
  m_u32PagesInFirmware2 = 220
  m_u32DBBTSearchAreaStartAddress = 256
  m_u32BadBlockMarkerByte = 1950
  m_u32BadBlockMarkerStartBit = 2
  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 0x6e000 - available 0x180000
Firmware: image #1 @ 0x280000 size 0x6e000 - available 0x180000
-------------- Start to write the [ FCB ] -----
mtd: erasing @0:0x0-0x20000
mtd: Writing FCB0 [ @0:0x0 ] (880) *
mtd: erasing @0:0x20000-0x40000
mtd: Writing FCB1 [ @0:0x20000 ] (880) *
mtd: erasing @0:0x40000-0x60000
mtd: Writing FCB2 [ @0:0x40000 ] (880) *
mtd: erasing @0:0x60000-0x80000
mtd: Writing FCB3 [ @0:0x60000 ] (880) *
mtd_commit_bcb(FCB): status 0

-------------- Start to write the [ DBBT ] -----
mtd: erasing @0:0x80000-0xa0000
mtd: Writing DBBT0 [ @0:0x80000 ] (800) *
mtd: erasing @0:0xa0000-0xc0000
mtd: Writing DBBT1 [ @0:0xa0000 ] (800) *
mtd: erasing @0:0xc0000-0xe0000
mtd: Writing DBBT2 [ @0:0xc0000 ] (800) *
mtd: erasing @0:0xe0000-0x100000
mtd: Writing DBBT3 [ @0:0xe0000 ] (800) *
mtd_commit_bcb(DBBT): status 0

---------- Start to write the [ .tmp_kobs_ng ]----
mtd: Writting .tmp_kobs_ng: #0 @0: 0x00100000 - 0x0016e000
mtd: erasing @0:0x100000-0x120000
mtd: erasing @0:0x120000-0x140000
mtd: erasing @0:0x140000-0x160000
mtd: erasing @0:0x160000-0x180000
mtd: We write one page for save guard. *
mtd: Writting .tmp_kobs_ng: #1 @0: 0x00280000 - 0x002ee000
mtd: erasing @0:0x280000-0x2a0000
mtd: erasing @0:0x2a0000-0x2c0000
mtd: erasing @0:0x2c0000-0x2e0000
mtd: erasing @0:0x2e0000-0x300000
mtd: We write one page for save guard. *