efi_loader: display RO attribute with TEE-backed variables

A previous commit adds support for displaying variables RO flag.
Let's add it on the TEE backed variable storage as well.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

1 files changed, 43 insertions, 0 deletions

diff --git a/include/mm_communication.h b/include/mm_communication.h
index 193c4d1578..f9c05bb7f1 100644
--- a/include/mm_communication.h
+++ b/include/mm_communication.h
@@ -205,4 +205,47 @@ struct smm_variable_query_info {
 	u32 attr;
 };
 
+#define VAR_CHECK_VARIABLE_PROPERTY_REVISION 0x0001
+#define VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY BIT(0)
+/**
+ * struct var_check_property - Used to store variable properties in StMM
+ *
+ * @revision:   magic revision number for variable property checking
+ * @property:   properties mask for the variable used in StMM.
+ *              Currently RO flag is supported
+ * @attributes: variable attributes used in StMM checking when properties
+ *              for a variable are enabled
+ * @minsize:    minimum allowed size for variable payload checked against
+ *              smm_variable_access->datasize in StMM
+ * @maxsize:    maximum allowed size for variable payload checked against
+ *              smm_variable_access->datasize in StMM
+ *
+ * Defined in EDK2 as VAR_CHECK_VARIABLE_PROPERTY.
+ */
+struct var_check_property {
+	u16         revision;
+	u16         property;
+	u32         attributes;
+	efi_uintn_t minsize;
+	efi_uintn_t maxsize;
+};
+
+/**
+ * struct smm_variable_var_check_property - Used to communicate variable
+ *                                          properties with StMM
+ *
+ * @guid:       vendor GUID
+ * @name_size:  size of EFI name
+ * @property:   variable properties struct
+ * @name:       variable name
+ *
+ * Defined in EDK2 as SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY.
+ */
+struct smm_variable_var_check_property {
+	efi_guid_t                guid;
+	efi_uintn_t               name_size;
+	struct var_check_property property;
+	u16                       name[];
+};
+
 #endif /* _MM_COMMUNICATION_H_ */