add xcause.xpil fields to mandatory reset state

riscv / riscv-fast-interrupt

Proposal for a RISC-V Core-Local Interrupt Controller (CLIC)

https://jira.riscv.org/browse/RVG-63

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add xcause.xpil fields to mandatory reset state #373

Closed dansmathers closed 8 months ago

dansmathers commented 9 months ago

Since switching from CLINT to CLIC modes already requires xpil in all privilege modes to be zeroed, it follows that they should also just be reset if starting in CLIC mode.