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-rw-r--r--include/drivers/fwu/fwu.h16
-rw-r--r--include/drivers/fwu/fwu_metadata.h74
2 files changed, 90 insertions, 0 deletions
diff --git a/include/drivers/fwu/fwu.h b/include/drivers/fwu/fwu.h
new file mode 100644
index 0000000..9f18e22
--- /dev/null
+++ b/include/drivers/fwu/fwu.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2021, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef FWU_H
+#define FWU_H
+
+#include <stdbool.h>
+
+void fwu_init(void);
+bool fwu_is_trial_run_state(void);
+const struct fwu_metadata *fwu_get_metadata(void);
+
+#endif /* FWU_H */
diff --git a/include/drivers/fwu/fwu_metadata.h b/include/drivers/fwu/fwu_metadata.h
new file mode 100644
index 0000000..2e88de5
--- /dev/null
+++ b/include/drivers/fwu/fwu_metadata.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2021, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * FWU metadata information as per the specification section 4.1:
+ * https://developer.arm.com/documentation/den0118/a/
+ *
+ */
+
+#ifndef FWU_METADATA_H
+#define FWU_METADATA_H
+
+#include <stdint.h>
+#include <tools_share/uuid.h>
+
+/* Properties of image in a bank */
+struct fwu_image_properties {
+
+ /* UUID of the image in this bank */
+ uuid_t img_uuid;
+
+ /* [0]: bit describing the image acceptance status –
+ * 1 means the image is accepted
+ * [31:1]: MBZ
+ */
+ uint32_t accepted;
+
+ /* reserved (MBZ) */
+ uint32_t reserved;
+
+} __packed;
+
+/* Image entry information */
+struct fwu_image_entry {
+
+ /* UUID identifying the image type */
+ uuid_t img_type_uuid;
+
+ /* UUID of the storage volume where the image is located */
+ uuid_t location_uuid;
+
+ /* Properties of images with img_type_uuid in the different FW banks */
+ struct fwu_image_properties img_props[NR_OF_FW_BANKS];
+
+} __packed;
+
+/*
+ * FWU metadata filled by the updater and consumed by TF-A for
+ * various purposes as below:
+ * 1. Get active FW bank.
+ * 2. Rollback to previous working FW bank.
+ * 3. Get properties of all images present in all banks.
+ */
+struct fwu_metadata {
+
+ /* Metadata CRC value */
+ uint32_t crc_32;
+
+ /* Metadata version */
+ uint32_t version;
+
+ /* Bank index with which device boots */
+ uint32_t active_index;
+
+ /* Previous bank index with which device booted successfully */
+ uint32_t previous_active_index;
+
+ /* Image entry information */
+ struct fwu_image_entry img_entry[NR_OF_IMAGES_IN_FW_BANK];
+
+} __packed;
+
+#endif /* FWU_METADATA_H */