[pentest] Batch mode for Ibex SCA

This commit adds the following new FI and SCA ibex tests:
- ibex_sca_tl_write_batch_fvsr
- ibex_sca_tl_write_batch_fvsr_fix_address
- ibex_sca_tl_write_batch_random
- ibex_sca_tl_write_batch_random_fix_address
- ibex_sca_tl_write_fvsr
- ibex_sca_tl_write_random
- ibex_sca_tl_read_batch_fvsr
- ibex_sca_tl_read_batch_fvsr_fix_address
- ibex_sca_tl_read_batch_random
- ibex_sca_tl_read_batch_random_fix_address
- ibex_sca_tl_read_fvsr
- ibex_sca_tl_read_random
- ibex_sca_register_file_write_batch_fvsr
- ibex_sca_register_file_write_batch_random
- ibex_sca_register_file_write_fvsr
- ibex_sca_register_file_write_random
- ibex_sca_register_file_read_batch_fvsr
- ibex_sca_register_file_read_batch_random
- ibex_sca_register_file_read_fvsr
- ibex_sca_register_file_read_random
- ibex_fi_char_sram_static

The host code is located in lowRISC/ot-sca#349

Signed-off-by: Pascal Nasahl <[email protected]>

sw/device/sca/lib/prng.c

@@ -158,6 +158,8 @@ __attribute__((noinline)) static uint32_t genrand_int32(void) {
 
 void prng_seed(uint32_t seed) { init_by_array(&seed, 1); }
 
+uint32_t prng_rand_uint32(void) { return genrand_int32(); }
+
 uint8_t prng_rand_byte(void) {
   uint32_t rand = 0;
   do {

sw/device/sca/lib/prng.h

@@ -33,6 +33,16 @@ extern "C" {
  */
 void prng_seed(uint32_t seed);
 
+/**
+ * Generates a random uint32_t.
+ *
+ * The behavior of this function matches the behavior of `random.randint(0,
+ * 0xFFFFFFFF)` in python.
+ *
+ * @return A random uint32_t.
+ */
+uint32_t prng_rand_uint32(void);
+
 /**
  * Generates a random byte.
  *

sw/device/tests/crypto/cryptotest/firmware/BUILD

@@ -169,10 +169,7 @@ cc_library(
 cc_library(
     name = "ibex_fi",
     srcs = ["ibex_fi.c"],
-    hdrs = [
-        "ibex_fi.h",
-        "status.h",
-    ],
+    hdrs = ["ibex_fi.h"],
     deps = [
         "//sw/device/lib/base:memory",
         "//sw/device/lib/base:status",
@@ -191,16 +188,15 @@ cc_library(
 cc_library(
     name = "ibex_sca",
     srcs = ["ibex_sca.c"],
-    hdrs = [
-        "ibex_sca.h",
-        "status.h",
-    ],
+    hdrs = ["ibex_sca.h"],
     deps = [
         "//sw/device/lib/base:memory",
         "//sw/device/lib/base:status",
         "//sw/device/lib/runtime:log",
+        "//sw/device/lib/testing/test_framework:check",
         "//sw/device/lib/testing/test_framework:ujson_ottf",
         "//sw/device/lib/ujson",
+        "//sw/device/sca/lib:prng",
         "//sw/device/sca/lib:sca",
         "//sw/device/tests/crypto/cryptotest/firmware:sca_lib",
         "//sw/device/tests/crypto/cryptotest/json:ibex_sca_commands",