fixing sha accel sequence constraint solver issue due to reduced mail…

…box size in caliptra seed

Larger test vectors won't fit inside the mailbox, reducing the range of vectors the test can pick from

src/soc_ifc/uvmf_soc_ifc/uvmf_template_output/verification_ip/environment_packages/soc_ifc_env_pkg/sequences/mbox/soc_ifc/soc_ifc_env_mbox_sha_accel_sequence.svh

@@ -66,10 +66,15 @@ class soc_ifc_env_mbox_sha_accel_sequence extends soc_ifc_env_mbox_sequence_base
                                  sha_accel_op_rand.sha512_mode == 1'b1 -> mbox_resp_expected_dlen == 32'd64; 
                                  solve sha_accel_op_rand before mbox_resp_expected_dlen; }
     //don't run the "empty" test case
+    `ifdef CALIPTRA_MODE_SEED
+    constraint test_case_c {test_case inside { [1:146] }; }
+    `else
     constraint test_case_c {test_case inside { [1:255] }; }
+    `endif
     //Start address can be anywhere from entry 0 to the final mailbox address
     //Must be aligned to dword
-    constraint start_addr_c {start_addr inside { [4:131068] }; 
+    //Calculate address with params - Last entry is Total size - 1 Entry in bytes
+    constraint start_addr_c {start_addr inside { [4:soc_ifc_pkg::MBOX_SIZE_BYTES-(soc_ifc_pkg::MBOX_DATA_W/8)] }; 
                              start_addr[1:0] == '0; }
 
     //==========================================