Chromite_bug_bounty_Cache_test

This repository contains the python scripts to generate RISC-V Assembly for testing the Cache subsystem in the Chromite Core by InCore Semiconductors.

This repository can be initialised as a submodule in chromite_uatg_tests.

Test Description

• Fill the cache completely based on the size mentioned in the core64.yaml input.
• Try to fill the fill-buffer completely.
• Perform cache line thrashing
• Perform cache set thrashing
• Perform all possible types of load/store access (byte, hword, word, dword)
• Perform a load/store hit in the RAMS
• Perform a load/store hit in the Fill-buffer
• Perform an I/O operation
• Perform a store-to-load forwarding scenario from the store-buffer
• Perform a replacement on all sets.
• Check if fence and fence.iwork properly
• Check if performance counters are correctly incremented.
• Check to see if we can perform simultaneous io and cached ops

File Structure

.
├── README.md -- Describes the Repo.
├── uatg_dcache_fill_fence_fencei.py -- Generates ASM to fill the Data Cache by performing consecutive stores at different address locations and check fence and fencei working.
├── uatg_dcache_fill_buffer.py -- Generates ASM to fill the Data Buffer by performing consecutive stores at different address locations.
├── uatg_dcache_fill_cache.py -- Generates ASM to fill the Data Cache by performing consecutive loads at different address locations.

Code Description

uatg_dcache_fill_fence_fencei.py

• Perform a fence operation.
• Load some data using numerous store operations to fill up the cache.
• Perform a fence.i operation.

uatg_dcache_fill_buffer.py

• Perform a fence operation.
• Load some data using numerous store operations to fill up the cache.
• Clear the buffer
• Load some data into the buffer

uatg_dcache_fill_cache.py

• Perform a fence operation.
• Load some data using numerous store operations to fill up the cache.

Contributors

Pruthvi Raj S <bharathd7900@gmail.com>, Bharadwaj D <pruthvirajs@pesu.pes.edu>

Attribution

Ayush Mukherjee <ayushrex007@gmail.com>, Tejas Raj G R <tejasraj40@gmail.com>