Add fw_smepmp_ids bitmap to track PMP entries that protect firmware
regions. Allow us to preserve these critical entries across domain
transitions and check inconsistent firmware entry allocation.
Also add sbi_hart_smepmp_is_fw_region() helper function to query
whether a given SmePMP entry protects firmware regions.
Signed-off-by: Yu-Chien Peter Lin <peter.lin@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20251008084444.3525615-8-peter.lin@sifive.com
Signed-off-by: Anup Patel <anup@brainfault.org>
b210376fe2