Mi-V softcore with Libero v2.3 for PolarFire data initialization

[Subu Rama]

I am attempting to run FreeRTOS on a Mi-V softcore on a Microsemi PolarFire FPGA using Libero v2.3 for PolarFire and SoftConsole v6.0

I have an LSRAM block in the design and am initializing it from UPROM (i.e. the hex file is getting loaded into UPROM and then onto LSRAM for the Mi-V).

The app is from https://github.com/RISCV-on-Microsemi-FPGA/Operating-Systems/tree/master/FreeRTOS/FreeRTOS_on_Mi-V_Processor/miv-rv32im-freertos-port-test

The application miv-rv32im-freertos-port-test is sized as follows:

03:34:29 **** Incremental Build of configuration Release for project miv-rv32im-freertos-port-test ****

make all 

Invoking: GNU RISC-V Cross Print Size

riscv64-unknown-elf-size --format=berkeley "miv-rv32im-freertos-port-test.elf"

   text    data     bss     dec     hex filename

   5904     144 233776 239824   3a8d0 miv-rv32im-freertos-port-test.elf

Finished building: miv-rv32im-freertos-port-test.siz

 

03:34:30 Build Finished. 0 errors, 0 warnings. (took 1s.48ms)

The hex file size is 17044 bytes.

When I load it as a Stage 3 client in UPROM, the Used Memory is shown as 16640 9-bit words.

I am trying to understand how the .elf/hex file sizes relate to the usage in UPROM.

If the max available memory in UPROM is 52224 9-bit words, what does it mean as to the maximum size of the app (.elf/hex)?

Thank you for any information on this data initialization process.

Subu