Compiler/AWR1642: C6000 linker option: how to set a lib to another memory?

He wei

Part Number: AWR1642

Tool/software: TI C/C++ Compiler

Dear Officer,

We are working on ARW1642 for mmWave project. and we have developed our algorithm lib based C6000 on DSP and linked it to our application via. linker file. Seems this lib will be loaded to L2SRAM_UMAP0 L2SRAM_UMAP1 by default (is my understanding correct?), but we want to load this lib to L3 memory due to the big size. but when i try this option in linker file:

libmyxx.ae674 > L3PSRAM

It got error.

Can you advise what is the correct grammar to redirect this lib to load to L3 memory?

Thanks and best regards

He Wei

over 6 years ago

0 Raghunandan Kamath over 6 years ago

TI__Mastermind 22155 points

Hello He Wei,

Have you tried the below way to include the lib in L3 memory?

.fastCode:
{
libmyxx.ae674 (.text)
.......
......
} load=L3SRAM PAGE 0, run=L1PSRAM PAGE 0, table(_MmwDemo_fastCode_L1PSRAM_copy_table, compression=off)

Thanks,
Raghu

0 He wei over 6 years ago in reply to Raghunandan Kamath

Expert 1425 points

Dear Raghu,

Yes. I have tried it but this will "run" the lib in L1PSRAM, and there is no enough space too. So I want to set this library as " load=L3SRAM PAGE 0, run=L3PSRAM PAGE 0", So how to do that? (Take note that I don't want to change .fastCode section to run=L3PSRAM).

Thanks and best regards

He Wei

0 Raghunandan Kamath over 6 years ago in reply to He wei

TI__Mastermind 22155 points

Hello He Wei,

Sorry for my delayed reply.

Below

libxxx.ae674 > L3SRAM works

[note all sections of the library, not just .text will go (e.g .const and if it has globals (libraries don’t usually have) like .bss) to L3SRAM

but

libxxx.ae647(.text) > L3SRAM cannot work, it needs to be like below:

output_section_name
{
libxxx.ae674(.text)
} > L3SRAM

Sharing some resources that you can refer to for the compiler option and section assignment:

software-dl.ti.com/.../sdto_cgt_Linker-Command-File-Primer.html
processors.wiki.ti.com/.../Linker_Special_Section_Types
www.ti.com/.../spraa46a.pdf

BR,
Raghu

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Compiler/AWR1642: C6000 linker option: how to set a lib to another memory?