Porting C6713 project (ROM boot) to DSP/BIOS

That's what I figured.  It just wasn't clear that the BIOS would take care of ISTP for me.  What about the .vers section?  It gets placed at address 0, which conflicts with the boot loader.

The more I think about it, the more it looks like I cannot use the file->load program menu option with a COFF file generated with this method.  Previously, I didn't care about load addresses, since I simply copied 256K (minus 1K) from FLASH to RAM at startup.  I built the COFF file with my CMD file placing everything into IRAM.  It doesn't look like the DSP/BIOS generated CMD file supports this.

The .vers section is of type "copy section" if you look in the map file generated by the linker.  That means that although it's present in the out file it's not something that's actually been allocated in the memory map nor is it loaded to the target.  BIOS is just using a simple linker trick to be able to embed information on the version of BIOS you're using into the out file.  It doesn't take up any space on the target.

Looking at the map file and the HEX file, the version information appears to be taking up space.  The map file indicates that .vers takes up 0x40 bytes at address 0.  My boot loader code gets placed at 0x200, but it needs to be at 0.  The map file indicates a run address of 0, but the code gets placed at address 0x200 in the HEX file.  There does not appear to be anything in the HEX file at address 0.

Maybe this load address/run address mismatch has me scratching my head.  Is there any way to tell the linker to place the boot code at load address and run address 0?

Changing:

bootloader : LOAD=BOOT_RAM, RUN=BOOT_RAM

to:

bootloader > BOOT_RAM

seems to have fixed things.  Without changing any of the code, the boot loader (which was at 0x200) gets put to 0 now.  Thank you for the help.

Hello

I'm sorry I think I left this post in other link I didn't want to post twice.

I'm new in work with DSP ti.  I've been trying  to work in a boot loader with project  DSP/BIOS  and  I can't get it  works  I've followed  the steps indicated in spra999,may 2006  and I even tried to download the application but the link is broken http://www.-s.ti.com/sc/psheets/spra999a1/spraa999a1.zip.

when I defined the memory segments I get some problems:

warning: load address of uninitialized section .hwi ignored

error: can't allocate .IRAM$heap (sz: 00008000 page: 0) in IRAM (avail:
            00006938)

when I put a new linker command file whit these lines

-l  playcfg.cmd

SECTIONS

{ 

    .boot_load : LOAD=FLASH_BOOT, RUN =BOOT_RAM

}

 warning: load address of uninitialized section .hwi ignored
 warning: load address of uninitialized section .boot_load ignored
   error: can't allocate .IRAM$heap (sz: 00008000 page: 0) in IRAM (avail:
            00006938)

and the secondary bootloader  have I to write a .s62 file ?

I'm a litle bit confused, can you post a simple project with DSP/BIOS whit all this to guide me ? I've saw many forums but I can't do it correctly.

especially this http://wiki.davincidsp.com/index.php/Flashing_the_C6713_EVM

I'd really good aprecciate your help

Vanessa  Gamero

Here's the zip file that goes along with spra999a:

http://www.ti.com/litv/zip/spra999a

This error

 warning: load address of uninitialized section .boot_load ignored

means that you have not put any code into that section.  In C code you would need

#pragma CODE_SECTION(myfunc, .boot_load)

In assembly you would need:

   .sect boot_load

(That's off the top of my head, but I think I have the right notation!)

Brad

Thanks  for the link  I've build the dsp/bios project that  is in spra99a\rf3_dsk6713_boot_with_table\referenceframeworks\apps\rf3_table_boot\dsk6713 called app.pjt  and I get 7 errors then I compared that project with mine and I've saw some diferences in memory sections definitions IRAM it started  at 0x00000400 and len 0x0002fc00 in instead of  the paper  in wich len is : 0x1fc00 that solved  the problem I posted ,  I tried to add boot_c671x.s62 and c6713_emif.s62 to my project  and boot_c671x.h62 in my project folder and I get this:

undefined                        first referenced
 symbol                              in file
---------                        ----------------
___binit__                       c:\ti\myprojects\play\Debug\boot_c671x.obj

>>   error: symbol referencing errors - './Debug/play.out' not built

-the secondary bootlader boo_c671x.s62 in the paper have a copy table that's not in app project  how can i get this?

when I saw  play.map

address        name

.....

UNDEFED ___binit__
00000a00   ___bss__
00000ec8   ___cinit__
00000400   ___data__
00000400   ___edata__
00000ec8   ___end__

.....

my project is named play  and it simple it only turn on leeds .

I'd really appreciate  your help

Vanessa

yes, I think that can explain it for the boot_load section, but how about the .hwi section?

warning: load address of uninitialized section .hwi ignored

When I set this section's run address to DDR2/IRAM, and its load adress to FLASH, the map file gave it a random run address of 0xffffffff, and code length is 0.

While I changed its run adress to FLASH, the warning is gone, but the code length is still 0.

Can I ask what's the relation between .hwi section and .hwi_vec section?  ISTP obviously points to .hwi_vec, am I right?  then why is it necessary that BIOS create the .hwi section?

I would appreciate your reply.

Chen Jie

PS. I am using dm6437evm board.