TMS320C6455: How to modify linked files in SYS/BIOS to enable HPI to load and run

Gary Lu

Part Number: TMS320C6455

SECTIONS
{
    .text: load >> IRAM
    .stack: load > IRAM
    .bss: load > IRAM
    .cinit: load > IRAM
    .pinit: load > IRAM
    .const: load >> IRAM
    .data: load >> IRAM
    .switch: load >> IRAM
    .sysmem: load > IRAM
    .far: load >> IRAM
    .args: load > IRAM align = 0x4, fill = 0 {_argsize = 0x0; }
    .cio: load >> IRAM
    .vecs: load > IRAM
    xdc.meta: load > IRAM, type = COPY

}

The linker.cmd generated automatically by RTSC places the ". text" section first. I need to put. init first, but linker.cmd is automatically generated and cannot be modified. How can I operate it?
My ultimate goal is to convert the generated COFF file into a BIN file using the following instructions, and then load it using HPI. After setting DSPINT to 1, it can run

"${CCE_INSTALL_ROOT}/utils/tiobj2bin/tiobj2bin" "${BuildArtifactFileName}" "${BuildArtifactFileBaseName}.bin" "${CG_TOOL_ROOT}/bin/ofd6x" "${CG_TOOL_ROOT}/bin/hex6x" "${CCE_INSTALL_ROOT}/utils/tiobj2bin/mkhex4bin"

Regards

Gary

over 2 years ago

+1 Nick Saulnier over 2 years ago

TI__Guru** 101330 points

Hello Gary,

Please note that C6455 is a very old part that no longer has hardware or software design support, as per the product page:
https://www.ti.com/product/TMS320C6455

How are you generating the linker.cmd file? e.g., is this a makefile in a software package somewhere? Is this happening through CCS, etc?

Regards,

Nick

0 Gary Lu over 2 years ago in reply to Nick Saulnier

TI__Intellectual 1660 points

Hello，

Excuse me 6455, the HPI loading process is as follows, through the Accessing_c_int00.PDF file, under the use of SYS/bios, add a custom cmd file, ENTRY POINT SYMBOL: "_c_int00" address: 00800000 in the MAP file, and then write the BIN file to the address 0x800000 The starting position, and then read the data through HPI, which is the same as the written data, and then write the HPIC DSPINT position 1 through the HPI interface, the program still cannot start, how can I do it, thank you.

Regards

Gary

0 Gary Lu over 2 years ago in reply to Nick Saulnier

TI__Intellectual 1660 points

Hello，

Or is there something wrong with the process, does the HPI need to operate the C6455 before loading the firmware, is there a help document for the HPI to load the firmware?

Regards

Gary

0 Gary Lu over 2 years ago

TI__Intellectual 1660 points

Hello，

problem solved

Regards

Gary

0 Gary Lu over 2 years ago in reply to Nick Saulnier

TI__Intellectual 1660 points

Hello,

After using the HPI interface to read the DSP L2 memory once, the HPIC register DSPINT is set to 1, and it can no longer be written in. I don’t know what the situation is, but it can be written in if it is not read. Have you encountered it again?

Regards，

Gary

+1 Nick Saulnier over 2 years ago in reply to Gary Lu

TI__Guru** 101330 points

Hello Gary,

All the documents I am aware of are on the product page. I also did a quick check in the processor wiki archives to see if there were any pages specifically about C6455 that seemed useful, but nothing popped up.

Regards,

Nick

0 Gary Lu over 2 years ago in reply to Nick Saulnier

TI__Intellectual 1660 points

Hello，

problem solved，Thanks！

Regards

Gary

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TMS320C6455: How to modify linked files in SYS/BIOS to enable HPI to load and run