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About booting from EMIF norflash

Yue Cao
Prodigy 30 points

Hi,

I have two problem,please help me to resolve.THX

1. In my board, I connect a norflash in EMIF,and I want to boot my code from the norflash.

My project use two cores,and generate two .out documents,now I can use hex6x.exe to conversion them  to .btbl document  and  merger them into one .btbl document  

then what shoud I do to burn it into EMIF norflash?

2.I have c6678 EVM,and I want to do a experiment, which use IBL to boot .btbl format data from EMIF nandflash,what should I do?

I want to use one core to do this experiment,and now I have convert the .out document into .btbl document,then what should i do next step?

Ps : I have  done this experiment : change the XX.btbl document name directly into XX.bin and use  nandwriter_evm6678l.out to burn it into nandflash and change the .gel document in  tools\boot_loader\ibl\src\make\bin\i2cConfig.gel like this

In setConfig_c66xx_main() of 
      replace 
          ibl.bootModes[1].u.nandBoot.bootFormat        = ibl_BOOT_FORMAT_BBLOB;
      with
          ibl.bootModes[1].u.nandBoot.bootFormat        = ibl_BOOT_FORMAT_BTBL;

I do the experiment like above ,but the EVM fault to boot!
Please help me and give me some advices or some successful examples

Thanks a lot
Best regards 

  

  • 0
    TI__Mastermind 42545 points

    I can answer question 2.  The C6678 does support booting from a NOR flash on the EMIF but it does not support booting from a NAND flash.  You need a NAND flash driver running to read the code from the NAND flash and that is not supported in the bootROM. 

  • 0 in reply to Bill Taboada
    Prodigy 30 points

    Hi，

    Thank you for your answer.

    I know the EVM can't boot directly from the Nandflash,so I use the IBL second boot from the nandflash.I just try to boot the data of .btbl format from the nandflash,and I don't how to do it 

    Thank you 

  • 0 in reply to Yue Cao
    TI__Genius 9915 points

    For EMIF the bootloader just branch to 0x70000000. so just make sure you code c_int00 in 0x70000000. You can have a branch address in this location to your main code.

    Thanks,

    Arun.

  • 0 in reply to ArunMani
    Intellectual 340 points

    Hi,

    We have c6678 custom board with EMIF16 nor flash connected to it. We want to load our application from EMIF16.

    1. To boot from EMIF, any pre boot loader is required like we use IBL for I2C ?

    2. how to combine our application with boot parameter table, boot table and boot configuration table?

    Thanks in advance