BaseTools: Improve error messages from UefiCapsuleHeader.py

Instead of throwing ValueErrors with no explanation, add a message
explaining what went wrong.

Signed-off-by: Rebecca Cran <rebecca@bsdio.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/BaseTools/Source/Python/Common/Uefi/Capsule/UefiCapsuleHeader.py b/BaseTools/Source/Python/Common/Uefi/Capsule/UefiCapsuleHeader.py
index 0e59028697..721171418f 100644
--- a/BaseTools/Source/Python/Common/Uefi/Capsule/UefiCapsuleHeader.py
+++ b/BaseTools/Source/Python/Common/Uefi/Capsule/UefiCapsuleHeader.py
@@ -91,9 +91,9 @@ class UefiCapsuleHeaderClass (object):
                      Buffer[0:self._StructSize]

                      )

         if HeaderSize < self._StructSize:

-            raise ValueError

+            raise ValueError("HeaderSize of {0} doesn't match _StructSize of {1}".format(HeaderSize, self._StructSize))

         if CapsuleImageSize != len (Buffer):

-            raise ValueError

+            raise ValueError("CapsuleImageSize of {0} doesn't match buffer length of {1}".format(CapsuleImageSize, len(Buffer)))

         self.CapsuleGuid         = uuid.UUID (bytes_le = CapsuleGuid)

         self.HeaderSize          = HeaderSize

         self.OemFlags            = Flags & 0xffff