[ibex/dv] Add several PMP tests

Signed-off-by: Udi <udij@google.com>

dv/uvm/core_ibex/riscv_dv_extension/testlist.yaml

@@ -575,17 +575,72 @@
   sim_opts: >
     +require_signature_addr=1
 
-- test: riscv_pmp_test
+- test: riscv_pmp_basic_test
   desc: >
-    Random PMP settings
-  iterations: 1
+    Basic PMP test - all PMP regions will be configured to default setting,
+    enabling all forms of accesses, expect that no exception will be thrown.
+    Randomize mstatus.mprv.
+  iterations: 10
   gen_test: riscv_rand_instr_test
   gen_opts: >
     +instr_cnt=6000
-    +pmp_randomize=0
-    +pmp_allow_addr_overlap=0
-    +pmp_max_offset=00021000
-    +boot_mode=u
+    +pmp_max_offset=00024000
+  rtl_test: core_ibex_base_test
+
+- test: riscv_pmp_disable_all_regions_test
+  desc: >
+    Disable all permissions from PMP regions, randomize the boot mode,
+    and randomize mstatus.mprv.
+    Expect that all appropriate faults are taken, and that the core
+    finishes executing successfully.
+  iterations: 20
+  gen_test: riscv_rand_instr_test
+  gen_opts: >
+    +instr_cnt=6000
+    +pmp_max_offset=00024000
+    +pmp_region_1=X:0,W:0,R:0
+    +pmp_region_2=X:0,W:0,R:0
+    +pmp_region_3=X:0,W:0,R:0
+    +pmp_region_4=X:0,W:0,R:0
+    +pmp_region_5=X:0,W:0,R:0
+    +pmp_region_6=X:0,W:0,R:0
+    +pmp_region_7=X:0,W:0,R:0
+    +pmp_region_8=X:0,W:0,R:0
+    +pmp_region_9=X:0,W:0,R:0
+    +pmp_region_10=X:0,W:0,R:0
+    +pmp_region_11=X:0,W:0,R:0
+    +pmp_region_12=X:0,W:0,R:0
+    +pmp_region_13=X:0,W:0,R:0
+    +pmp_region_14=X:0,W:0,R:0
+    +pmp_region_15=X:0,W:0,R:0
+  rtl_test: core_ibex_base_test
+
+- test: riscv_pmp_out_of_bounds_test
+  desc: >
+    Default PMP settings - enable all regions with full permissions.
+    Randomize mstatus.mprv and the boot mode.
+    Insert streams of memory instructions that access addresses out of PMP boundaries.
+  iterations: 25
+  gen_test: riscv_rand_instr_test
+  gen_opts: >
+    +instr_cnt=6000
+    +pmp_max_offset=00024000
+    +directed_instr_0=riscv_load_store_rand_addr_instr_stream,50
+  rtl_test: core_ibex_base_test
+
+- test: riscv_pmp_full_random_test
+  desc: >
+    Completely randomize the boot mode, mstatus.mprv, and all PMP configuration,
+    and allow PMP regions to overlap.
+    A large number of iterations will be required since this introduces a huge
+    state space of configurations.
+  iterations: 100
+  gen_test: riscv_rand_instr_test
+  gen_opts: >
+    +instr_cnt=6000
+    +pmp_max_offset=00024000
+    +pmp_randomize=1
+    +pmp_allow_addr_overlap=1
   rtl_test: core_ibex_base_test
 
 - test: riscv_bitmanip_test