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Privilege / Security Testsuite

Testsuite very dedicated to privilege and security features in the HART.

For more information about the bash front-end flow:

./run.sh -h

Test 0: M-mode/U-mode transition

Basic test to ensure we can move back and forth the modes and manage correctly ecall/mret and execute a basic program. It also checks the error management if u-mode runtime tries to use m-mode instructions or tries to access CSR registers reserved to m-mode

Test 1: Interrupts

Generate interrupts and manage them. Check U-mode move back M-mode to handle the interrupt. Check WFI is correctly supported by U-mode.

Test 2: Check PMP Regions

Checks the three memory region types and tries access across the region and out of its boundaries

Test 3: PMP permissions

Configure PMP and check permissions are correctly followed by the mpu and control/memfy units with U-mode

Test 4: machine mode access fault

Checks machine mode experience access fault on MPRV or locked region

Test 5: Counters

Checks user mode can access or not cycle / time / instret counters based on MCOUNTEREN CSR