Add VB test error func/num

firmware/lib/vboot_nvstorage.c

Index: firmware/lib/vboot_nvstorage.c
diff --git a/firmware/lib/vboot_nvstorage.c b/firmware/lib/vboot_nvstorage.c
index 419a9fbc1bfa485eabc6b8bf185c9f3492a41656..83f6ef5cdcf3f91f6a626878150c55e97f0ea75d 100644
--- a/firmware/lib/vboot_nvstorage.c
+++ b/firmware/lib/vboot_nvstorage.c
@@ -29,6 +29,9 @@
 #define FIRMWARE_FLAGS_OFFSET        5
 #define FIRMWARE_TRIED_FIRMWARE_B       0x80
 #define FIRMWARE_FW_VERIFIED_KERNEL_KEY 0x40
+#define FIRMWARE_TEST_ERR_FUNC_MASK     0x38
+#define FIRMWARE_TEST_ERR_FUNC_SHIFT    3
+#define FIRMWARE_TEST_ERR_NUM_MASK      0x07
 
 #define KERNEL_FIELD_OFFSET         11
 #define CRC_OFFSET                  15
@@ -134,6 +137,15 @@ int VbNvGet(VbNvContext* context, VbNvParam param, uint32_t* dest) {
                1 : 0);
       return 0;
 
+    case VBNV_TEST_ERROR_FUNC:
+      *dest = (raw[FIRMWARE_FLAGS_OFFSET] & FIRMWARE_TEST_ERR_FUNC_MASK)
+          >> FIRMWARE_TEST_ERR_FUNC_SHIFT;
+      return 0;
+
+    case VBNV_TEST_ERROR_NUM:
+      *dest = raw[FIRMWARE_FLAGS_OFFSET] & FIRMWARE_TEST_ERR_NUM_MASK;
+      return 0;
+
     default:
       return 1;
   }
@@ -215,6 +227,17 @@ int VbNvSet(VbNvContext* context, VbNvParam param, uint32_t value) {
         raw[FIRMWARE_FLAGS_OFFSET] &= ~FIRMWARE_FW_VERIFIED_KERNEL_KEY;
       break;
 
+    case VBNV_TEST_ERROR_FUNC:
+      raw[FIRMWARE_FLAGS_OFFSET] &= ~FIRMWARE_TEST_ERR_FUNC_MASK;
+      raw[FIRMWARE_FLAGS_OFFSET] |= (value << FIRMWARE_TEST_ERR_FUNC_SHIFT)
+          & FIRMWARE_TEST_ERR_FUNC_MASK;
+      break;
+
+    case VBNV_TEST_ERROR_NUM:
+      raw[FIRMWARE_FLAGS_OFFSET] &= ~FIRMWARE_TEST_ERR_NUM_MASK;
+      raw[FIRMWARE_FLAGS_OFFSET] |= (value & FIRMWARE_TEST_ERR_NUM_MASK);
+      break;
+
     default:
       return 1;
   }