MLBEDSW-7718: Add cmd1 payload legality checks

- checks that cmd1 payloads are legal in
  register_command_stream_generator,
- adds unit tests

Change-Id: I2bc23147f60fe090c71703f08d9cbaa279fac86e
Signed-off-by: William Isaksson <william.isaksson@arm.com>

1 files changed, 15 insertions, 1 deletions

diff --git a/ethosu/vela/errors.py b/ethosu/vela/errors.py
index bf3bb4d3..22fc17c6 100644
--- a/ethosu/vela/errors.py
+++ b/ethosu/vela/errors.py
@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: Copyright 2020-2021 Arm Limited and/or its affiliates <open-source-office@arm.com>
+# SPDX-FileCopyrightText: Copyright 2020-2021, 2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
 #
 # SPDX-License-Identifier: Apache-2.0
 #
@@ -75,3 +75,17 @@ class AllocationError(VelaError):
 
     def __init__(self, msg):
         super().__init__(f"Allocation failed: {msg}")
+
+
+class ByteAlignmentError(VelaError):
+    """Raised when value is unaligned"""
+
+    def __init__(self, msg):
+        super().__init__(f"Unaligned Value: {msg}")
+
+
+class ByteSizeError(VelaError):
+    """Raised when size has illegal value"""
+
+    def __init__(self, msg):
+        super().__init__(f"Illegal Size: {msg}")