How to using ADI_BOOT_DATA and bfrom_BootKernel() in BF527？

Hi,

Please refer the below link for multi dxe boot using BF527:
ez.analog.com/.../faq-adsp-bf527-multi-dxe-boot

Regards,
Anand Selvaraj.

Thank you your reply.
I have done multi ldr file load function.now,I want to read the data stream from flash by my code,then load to RAM or SDRAM.I must read data of ldr(it in NorFlash) by my code ,because the flash high address of the is simulated through GPIO.

Thanks

Hi,

We have an example to read/write from flash using VisualDSP++.
In the attached POST example , refer ..\Power_On_Self_Test\Parallel\m29w320_test.c file which is used to read/write on flash.
Please take this as reference and modify the code as per your requirement.

Power_On_Self_Test.zip

Regards,
Anand Selvaraj.

Hi,

Thanks for your reply, but I'm sorry, it still didn't solve my problem.
I am not sure that my expression is clear? I am trying to solve the problem of being able to load LDR files that large than 1M from NorFlash.
I saw that the EBIU address bit is 19 bits,so I think that BOOT ROM on chip cannot be automatically load LDR file of more than 1M.
It's right?

Thanks,

Hi,

You are unable to boot the loader file which is more than 1Mbytes in size. Can you please confirm our understanding?
Also please explain your issue in detail.

Regards,
Anand Selvaraj.

Hi,

The current situation is as follows:
1. AMS0 is set "1",AMS1~AMS3 set "0" ,BMODE set :0001.
2.I use NorFlash to store .ldr file,then boot load .ldr from 0x20000000.
3.The flash device size is 64MB,it have 25 address pins,number 1 to 19 link to DSP ADDR1~ADDR19(as the lower bit address line),
and number 20~25(as the chip select or high bit address line,default select first 1M space)  link to fives GPIO pins of DSP.
4.Now I can write or read flash by my code ,the code will operate GPIO(address pins 20~25 of flash) when want to write or read large than 1M space.
5.Now,DSP can load the .ldr file (.ldr file size less than 1M) normally.

The question：
when the .ldr file size large than 1M,how to do? as you said, I think the boot loader code on chip can't loader .ldr file of large than 1M (because it can't operate GPIO address pins 20~25 of flash)，So I want to write code to loader .ldr file when large than 1M.
Can you give me some advice?

Thanks,

Hi,

Please let us know the Flash part no that you are using.

Regards,
Anand Selvaraj.

Hi,
    Now, I can write another program into the SDRAM space through the code, and try jump to the first address of the space (SDRAM) where the new program is located through the JUM instruction.But,The new program does not seem to be executed. What should I do to execute the new program?
Thanks,

Hi,

Are you now trying to boot from SDRAM?. Please confirm.
Please refer " SDRAM Boot Mode" in Hardware reference manual for more details:
www.analog.com/.../ADSP-BF52x_hwr_rev1.2.pdf

Regards,
Anand Selvaraj.