About benchmark compile environment for E31 evaluation

Archive SiFive RISC-V Core IP Evaluation
1

Hi, I’d like to evaluate the performance of E31 through simulation based on evaluation RTL…

In my understanding, the benchmark needs to be compiled with crt.S, syscalls.c or something else.
When I referred ‘github.com/sifive/freedom-e-sdk’, the compile script for coreip-E31 seems to be under construction. (just hello.c can only be compiled…)

Is there a guideline to compile benchmarks (e.g., dhrystone, coremark) for E31 evaluation? (not for the FPGA)
or, can I get some benchmark binaries (much more complicated than basic applications such as add, mul, …)

Thank you.
Young-Ho

2

freedom-e-sdk is in the middle of a major rewrite. I’d suggest checking out the last commit before the rewrite started, which is the commit from September.

3

I’ve made a branch v1_0 at that commit.

I suggest most people check that out rather than master.

It might even be a good idea to make it the default branch, but I can’t do that on that repo.

4

Thanks Jim and Bruce.

As suggested, I find the branch v1.0 of freedom-e-sdk.
However, it seems that the branch does not include the compile environment for E31 bare metal (bsp option=coreip-e31).
Is it possible to run E31 RTL simulation with a hex file which is compiled with bsp option=freedom-e300-hifive1 ?

5

I don’t know how RTL simulation works. Benchmarks like dhrystone and coremark will try to print a result at the end, and printing can only work if you have a UART, an appropriate driver for that UART, and appropriate emulation support for that UART. Arty and e300 may have different UARTs. For RTL simulation of a core, you may not have any UART at all. But maybe if you generate a log from simulation, and you can see the register values, maybe you can find the values that would have been printed at the end in the simulation log.

6

FYI This pull request
https://github.com/sifive/freedom-e-sdk/pull/129
was an attempt to get things building again on mainline with the mee support, but a lot of stuff has changed since then so I don’t know if it is still useful.