[dice_chain] Handle flash_ctrl_recov_err in modif_digest

This test intentionally trigger recoverable errors. These lead to
alerts which we acknowledge in this commit.

Signed-off-by: James Wainwright <[email protected]>
(partially cherry picked from commit fc0b671)

Author: jwnrt

sw/device/silicon_creator/rom_ext/e2e/dice_chain/BUILD

@@ -148,8 +148,10 @@ opentitan_binary(
     ],
     deps = [
         "//hw/top:flash_ctrl_c_regs",
+        "//hw/top/dt",
         "//sw/device/lib/base:status",
         "//sw/device/lib/runtime:log",
+        "//sw/device/lib/testing/test_framework:ottf_alerts",
         "//sw/device/lib/testing/test_framework:ottf_main",
         "//sw/device/silicon_creator/lib/drivers:flash_ctrl",
         "//sw/device/silicon_creator/lib/drivers:hmac",

sw/device/silicon_creator/rom_ext/e2e/dice_chain/modify_digest.c

@@ -4,11 +4,13 @@
 
 #include "sw/device/lib/base/status.h"
 #include "sw/device/lib/runtime/log.h"
+#include "sw/device/lib/testing/test_framework/ottf_alerts.h"
 #include "sw/device/lib/testing/test_framework/ottf_main.h"
 #include "sw/device/silicon_creator/lib/drivers/flash_ctrl.h"
 #include "sw/device/silicon_creator/lib/drivers/hmac.h"
 
 #include "hw/top/flash_ctrl_regs.h"
+#include "hw/top/dt/flash_ctrl.h"
 
 OTTF_DEFINE_TEST_CONFIG();
 
@@ -41,6 +43,12 @@ static status_t modify_digest_test(void) {
 }
 
 bool test_main(void) {
+  // This test intentionally creates an invalid digest triggering recoverable
+  // errors. Ignore the alert in OTTF.
+  CHECK_STATUS_OK(
+        ottf_alerts_expect_alert_start(dt_flash_ctrl_alert_to_alert_id(
+            kDtFlashCtrlFirst, kDtFlashCtrlAlertRecovErr)));
+
   status_t sts = modify_digest_test();
   if (status_err(sts)) {
     LOG_ERROR("modify_digest_test: %r", sts);