How to control the FCB?

[eunseokjung]

Hi all,

The community teach me a lot of things about Bootloader. My level is increased very sharply. Thank you very much.

Now, i understand what is Kobs-ng and how to use this.

But one thins is unclear. Relationships between FCB and Kobs-ng.

What i know that Kobs-ng can write FCB to the NAND.

How to control FCB by using Kobs-ng? I can't find control option in Kobs-ng.

Where can i find about this information?

Best,

Eunseok.

[BiyongSUN]

kobs-ng

kobs-ng version : [ 1.3 ] git hash (unknown)

ROM Version 3

usage: kobs-ng [COMMAND] [ARGS]

Where [COMMAND] is one of:

  dump [-v] [KOBS] ........................ Verify/dump boot structures

    -v .................................... Verbose mode

  imgverify [-v] [KEY] <file> ............. Verify image validity

    -v .................................... Verbose mode

  init [-v] [KEY] [KOBS] <file> ........... Initialize boot structure &

                                            install bootstreams

    -v .................................... Verbose mode

    -x .................................... Add 1k-padding in the head

    -n .................................... Dry run (don't commit to flash)

    -w .................................... Commit to flash

  update [-v] [KEY] [KOBS] [-0|1] <file> .. Update a single bootstream

    -v .................................... Verbose mode

    -0|1 .................................. Update specified bootstream #

  extract [-v] [KEY] [KOBS] [-0|1] <file> . Extract a bootstream from flash

    -v .................................... Verbose mode

    -0|1 .................................. Extract specified bootstream #

  [KOBS] boot structures config options

    --chip_0_device_path=<path> .......... Device of boot (default /dev/mtd0)

    --chip_1_device_path=<path> .......... The second chip in case of multichip NAND

    --search_exponent=<value> ............ NCB field (default 2)

    --data_setup_time=<value> ............ NCB field (default 80)

    --data_hold_time=<value> ............. NCB field (default 60)

    --address_setup_time=<value> ......... NCB field (default 25)

    --data_sample_time=<value> ........... NCB field (default 6)

    --row_address_size=<value> ........... NCB field (default 3)

    --column_address_size=<value> ........ NCB field (default 2)

    --read_command_code1=<value> ......... NCB field (default 0x00)

    --read_command_code2=<value> ......... NCB field (default 0x30)

    --boot_stream_major_version=<value> .. NCB field (default 1)

    --boot_stream_minor_version=<value> .. NCB field (default 0)

    --boot_stream_sub_version=<value> .... NCB field (default 0)

    --ncb_version=<value> ................ NCB field (default 3)

   [KEY] key management related options

        -d ............................... Use device key (OTP) (not yet supported)

        -z ............................... Use key of all zeroes (default)

        -k<hexadecimalkey> ............... Use hex key of 16 bytes

[igorpadykov · Accepted solution]

Hi Eunseok

for example of kobs-ng usage please look at attached ucl.xml

from mfg tools, also may be useful to look at

AW: imx53 internal boot from NAND — Barebox

Best regards

igor

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