diff --git a/include/sandbox_efi_capsule.h b/include/sandbox_efi_capsule.h
new file mode 100644
index 0000000..3e288e8
--- /dev/null
+++ b/include/sandbox_efi_capsule.h
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2023, Linaro Limited
+ */
+
+#if !defined(_SANDBOX_EFI_CAPSULE_H_)
+#define _SANDBOX_EFI_CAPSULE_H_
+
+#define SANDBOX_UBOOT_IMAGE_GUID	"09d7cf52-0720-4710-91d1-08469b7fe9c8"
+#define SANDBOX_UBOOT_ENV_IMAGE_GUID	"5a7021f5-fef2-48b4-aaba-832e777418c0"
+#define SANDBOX_FIT_IMAGE_GUID		"3673b45d-6a7c-46f3-9e60-adabb03f7937"
+#define SANDBOX_INCORRECT_GUID		"058b7d83-50d5-4c47-a195-60d86ad341c4"
+
+#define UBOOT_FIT_IMAGE			"u-boot_bin_env.itb"
+
+#define CAPSULE_PRIV_KEY		"capsule_priv_key_good.key"
+#define CAPSULE_PUB_KEY			"capsule_pub_key_good.crt"
+#define CAPSULE_INVAL_KEY		"capsule_priv_key_bad.key"
+#define CAPSULE_INVAL_PUB_KEY		"capsule_pub_key_bad.crt"
+
+#endif /* _SANDBOX_EFI_CAPSULE_H_ */