Merge pull request #2243 from pascalgouedo/cv32e40p/dev_dd_pgo-power

New test to highlight power consumption issues

cv32e40p/tests/programs/custom/power_issues_test/test.c

@@ -0,0 +1,122 @@
+// Copyright 2020 OpenHW Group
+// Copyright 2023 Dolphin Design
+//
+// Licensed under the Solderpad Hardware Licence, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://solderpad.org/licenses/
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// SPDX-License-Identifier:Apache-2.0 WITH SHL-2.0
+// 
+// Description : Higlights unecessary Register File multiple writes
+// 
+
+#include <stdio.h>
+
+int main()
+{
+  int error = 0;
+
+  long int a, b;
+  long long int mul64;
+  long int div32;
+
+  volatile long int *p = 0x2000;
+  volatile long int *p_unaligned = 0x2002;
+  volatile long int aligned_load, unaligned_load;
+
+  // MULH
+  a = 0x12345678;
+  b = 0x98765432;
+
+  __asm__ volatile("nop");
+  __asm__ volatile("nop");
+  __asm__ volatile("mulh %0, %1, %2" : "=r"(mul64) : "r"(a), "r"(b));
+
+  if (mul64 != 0xf8a326fb) {
+    error++;
+  }
+
+  // DIV
+  a = 10;
+
+  __asm__ volatile("nop");
+  __asm__ volatile("nop");
+  __asm__ volatile("div %0, %1, %2" : "=r"(div32) : "r"(b), "r"(a));
+
+  if (div32 != 0xf5a56ed2) {
+    error++;
+  }
+
+  // LOAD
+  a = 0x55555555;
+  b = 0xaaaaaaaa;
+
+  p[0] = a;
+  p[1] = b;
+
+  __asm__ volatile("nop");
+  __asm__ volatile("nop");
+  __asm__ volatile("lw %0, 0(%1)" : "=r"(aligned_load) : "r"(p));
+
+  if (aligned_load != 0x55555555) {
+    error++;
+  }
+
+  // MISALIGNED LOAD
+  a = 0x87654321;
+  b = 0x0fedcba9;
+
+  p[0] = a;
+  p[1] = b;
+
+  __asm__ volatile("nop");
+  __asm__ volatile("nop");
+  __asm__ volatile("lw %0, 2(%1)" : "=r"(unaligned_load) : "r"(p));
+
+  if (unaligned_load != 0xcba98765) {
+    error++;
+  }
+
+#ifdef PULP
+  // POST-INC LOAD
+  a = 0x55555555;
+  b = 0xaaaaaaaa;
+
+  p[0] = a;
+  p[1] = b;
+
+  __asm__ volatile("nop");
+  __asm__ volatile("nop");
+  __asm__ volatile("cv.lw %0, (%1), 4" : "=r"(aligned_load) : "r"(p));
+
+  if (aligned_load != 0x55555555) {
+    error++;
+  }
+
+  // MISALIGNED POST-INC LOAD
+  __asm__ volatile("addi %0, %1, -4" : "=r"(p) : "r"(p));
+  a = 0x87654321;
+  b = 0x0fedcba9;
+
+  p[0] = a;
+  p[1] = b;
+
+  __asm__ volatile("nop");
+  __asm__ volatile("nop");
+  __asm__ volatile("cv.lw %0, (%1), 4" : "=r"(unaligned_load) : "r"(p_unaligned));
+
+  if (unaligned_load != 0xcba98765) {
+    error++;
+  }
+#endif
+
+  return error;
+}

cv32e40p/tests/programs/custom/power_issues_test/test.yaml

@@ -0,0 +1,23 @@
+# Copyright 2020 OpenHW Group
+# Copyright 2023 Dolphin Design
+#
+# Licensed under the Solderpad Hardware Licence, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://solderpad.org/licenses/
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier:Apache-2.0 WITH SHL-2.0
+
+name: power_issues_test
+uvm_test: uvmt_cv32e40p_firmware_test_c
+default_cflags: >
+    -O3 -g -static -mabi=ilp32 -march=$(RISCV_MARCH) -Wall -pedantic
+description: >
+    Higlights unecessary Register File multiple writes