[BACKPORT] Pull PMP related changes from upstream #174
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Change bgtz t0, mpfs_opensbi_prepare_hart to tail-call to ensure there will be no link time error due to the jump offset being too large.
Fix case where NULL is de-referenced via tx/rx buffer or descriptor. Only 1 queue is currently set up for each, so the indices 1,2,3 are not valid and should not be handled.
Instead of releasing rx descriptor twice and tx buffer twice.
Initially clear PMP for all harts, this fixes random warm reset issues. Signed-off-by: Ville Juven <[email protected]>
pussuw
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Pull some commits from upstream