EPCQ remaining space read and write

[adamShiau]

Hello everyone,

I am using the Cyclone IV model FPGA and utilizing a 16Mb EPCQ to store a .jic file.

If there is any remaining space in my EPCQ,

I would like to use it for storing some parameters.

Could you please guide me on how to determine the amount of available space?

Thanks!

Adam.S

[FvM]

Hi,
a straightforward approach would be to reserve the memory amount specified for maximal uncompressed configuration file size in device handbook, rounded up to full flash sector. Use the remaining flash blocks for other purposes.

[adamShiau]

Hi FvM,
How can I determine how much space the .jic file has occupied in flash? Information like the start address and end address, for example.

Adam. S

[FvM]

Hi,
Programming File Converter optionally generates a map file with this information.

[adamShiau]

Hi FvM,

In my application, the size of `.jic` file is 2MB.

I convert the `.sof` and `.elf` files into `.flash` files separately,

and then further convert them into `hw.hex` and `sw.hex` files.

Afterward, I combine these two `.hex` files into a `.jic` file.

Upon completing the conversion, I obtain a `.map` file,

with content containing information from `hw.hex` and `sw.hex` (as shown below).

My question is, if this content represents the address information in the EPCQ,

why is there such a significant difference in file sizes?

0x3BA05 corresponds to 244,229 Bytes, which is only 238.5KB.

Adam S

[KellyJialin_Goh]

Hi,

Greetings and welcome to Intel's forum.

You may find more information on the .jic file information generated here: https://www.intel.com/content/www/us/en/docs/programmable/683299/current/generating-jic-and-jam-programming-files.html

Thank you.

Regards,

Kelly Jialin, GOH

[adamShiau]

Hi Kelly,

Thank you for your response.

However, the link doesn't mention the information about .jic file content occupying EPCQ addresses.

It's more like a guide about file conversion.

Adam S

[KellyJialin_Goh]

Hi,

Any updates from your end whether the information provided was useful?

Thank you.

Regards,

Kelly

[KellyJialin_Goh]

Hi,

Any updates on the issue? Is there any further support needed from my end?

Thank you.

Regards,

Kelly

[KellyJialin_Goh · Accepted solution]

Hi,

You may refer to the EPCQ flash data sheet to understand more on the memory space of a .jic file occupying the EPCQ flash: https://www.mouser.com/datasheet/2/612/cfg_cf52012-1301744.pdf

Thank you.

Regards,

Kelly

[EBERLAZARE_I_Intel]

Hi,

Do you have any further questions?

[JingyangTeh]

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