boot from PCI express

Fabrizio Gualtieri

Hello

We are working on a custom board with the C6678 DSP Silicon version 2.0

On power-up and PCI auto enumeration (Windows host) , the C6678 DSP shows 5 bars, with BAR1 to BAR5 32MB each (it's ok)

Following the example in '...\mcsdk_2_01_02_06\tools\boot_loader\examples\pcie\linux_host_loader' and using scripts in '...\mcsdk_2_01_02_06\tools\boot_loader\examples\pcie\pcieboot_helloworld\evmc6678l\bin'
we generate our .bin file and we copy it to the DSP

after that we write the boot entry addr to 0x1087FFFC (core 0 Magic Address) but our program doesn't run.

We also tried to swap endianess but the problem still persists

N.B. Our application runs in Multicore shared memory (MSM, 0C000000 - 0C3FFFFF)

Any idea??

Thanks

over 10 years ago

0 Ganapathi Dhandapani95 over 10 years ago

TI__Mastermind 28085 points

Hi Fabrizio,

The Linux host loader Example only works on Linux PC. Please refer “\ti\mcsdk_x_xx_xx_xx\tools\boot_loader\examples\pcie\docs\Readme.pdf” document for more information.

Thanks,

0 Fabrizio Gualtieri over 10 years ago in reply to Ganapathi Dhandapani95

Intellectual 270 points

Hi,

Obviously, we use the example just to understand how to use regions and the write/read sequences. After that we move the code under windows using JUNGO win driver

we are also sure that we write the code in MSM in the right way, because we write the code using the host and then we read it back using Code Composer memory browser

Thanks

0 Ganapathi Dhandapani95 over 10 years ago in reply to Fabrizio Gualtieri

TI__Mastermind 28085 points

Hi Fabrizio,

I have tested the same demo in linux platform. It is working fine. I think you missed some sequence on your windows application.

Please try to run the example demo project in linux platform. And then implement the same sequence on your windows application.

Thanks,

0 Fabrizio Gualtieri over 10 years ago in reply to Ganapathi Dhandapani95

Intellectual 270 points

HI

Ok we will check our code as soon as possible.

In SPRUGY5C (DSP Bootloader Usser Guide) we read

"In this boot mode, CorePac0 is executing an IDLE until the PCIe interrupt wakes it.
This interrupt can be an MSI interrupt or a legacy interrupt. Once CorePac0 comes out
of IDLE, the RBL reads the boot magic address and modifies the program counter to
start executing the boot image."

Who should generate this interrupt?? the software on the HOST?? We can't find this on the linux example ...
Or is the interrupt automatically generated???

Thanks

0 Ganapathi Dhandapani95 over 10 years ago in reply to Fabrizio Gualtieri

TI__Mastermind 28085 points

Hi,

Host PC(RC) software generate this interrupt at the time of PCIe device initiaization. Host PC PCIe driver can do this sequences.

Thanks,

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boot from PCI express