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Altera_Forum's avatar
Altera_Forum
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12 years ago

nios using specific memory device

hi all, i'd like to ask that whether nios can create array on a specific memory device or not. i have two sram memory device , let's name it sram1 & sram2 i run my system , stack, and he...
Altera_Forum's avatar
Altera_Forum
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12 years ago

I believe you are looking for the "section" attribute via GCC. 


char foo __attribute__ ((section("FOO_SECTION")));

You then need to modify your linker script (via nios2-bsp-editor) to create a named section (e.g. "FOO_SECTION") which is located in the memory hardware of your choice.

The GCC manual is here:

http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc.pdf

Functions are discussed on page 238.

Variables are discussed on page 249.

You can also do it via the linker script if needed (e.g. if you want to manipulate binary objects instead of source code).