[fi] Add crypto_shadow_reg_access

fault_injection/configs/pen.global_fi.crypto.shadow_reg_access.cw310.yaml

@@ -0,0 +1,44 @@
+target:
+  target_type: cw310
+  fpga_bitstream: "../objs/lowrisc_systems_chip_earlgrey_cw310_0.1.bit"
+  force_program_bitstream: False
+  fw_bin: "../objs/sca_ujson_fpga_cw310.bin"
+  output_len_bytes: 16
+  target_clk_mult: 0.24
+  target_freq: 24000000
+  baudrate: 115200
+  protocol: "ujson"
+  port: "/dev/ttyACM4"
+fisetup:
+  fi_gear: "husky"
+  fi_type: "voltage_glitch"
+  parameter_generation: "random"
+  # Voltage glitch width in cycles.
+  glitch_width_min: 5
+  glitch_width_max: 150
+  glitch_width_step: 3
+  # Range for trigger delay in cycles.
+  trigger_delay_min: 0
+  trigger_delay_max: 500
+  trigger_step: 10
+  # Number of iterations for the parameter sweep.
+  num_iterations: 100
+fiproject:
+  # Project database type and memory threshold.
+  project_db: "ot_fi_project"
+  project_mem_threshold: 10000
+  # Store FI plot.
+  show_plot: True
+  num_plots: 10
+  plot_x_axis: "trigger_delay"
+  plot_x_axis_legend: "[cycles]"
+  plot_y_axis: "glitch_width"
+  plot_y_axis_legend: "[cycles]"
+test:
+  which_test: "crypto_shadow_reg_access"
+  expected_result: '{"result":[101716736,0,0],"alerts":[0,0,0],"err_status":0}'
+  # Set to true if the test should ignore alerts returned by the test. As the
+  # alert handler on the device could sometime fire alerts that are not
+  # related to the FI, ignoring is by default set to true. A manual analysis
+  # still can be performed as the alerts are stored in the database.
+  ignore_alerts: True

target/communication/fi_crypto_commands.py

@@ -32,6 +32,15 @@ def init(self) -> None:
         # Read back device ID from device.
         return self.read_response(max_tries=30)
 
+    def crypto_shadow_reg_access(self) -> None:
+        """ Starts the crypto.fi.shadow_reg_access test.
+        """
+        # CryptoFi command.
+        self._ujson_crypto_cmd()
+        # ShadowRegAccess command.
+        time.sleep(0.01)
+        self.target.write(json.dumps("ShadowRegAccess").encode("ascii"))
+
     def crypto_aes_key(self) -> None:
         """ Starts the crypto.fi.aes_key test.
         """