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-rw-r--r--common/rollback_private.h33
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diff --git a/common/rollback_private.h b/common/rollback_private.h
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+/* Copyright 2020 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/** Internal header file for rollback.
+ *
+ * EC code should not normally include this. These are exposed so they can be
+ * used by unit test code.
+ */
+
+#ifndef __CROS_EC_ROLLBACK_PRIVATE_H
+#define __CROS_EC_ROLLBACK_PRIVATE_H
+
+#include "config.h"
+
+/*
+ * Note: Do not change this structure without also updating
+ * common/firmware_image.S .image.ROLLBACK section.
+ */
+struct rollback_data {
+ int32_t id; /* Incrementing number to indicate which region to use. */
+ int32_t rollback_min_version;
+#ifdef CONFIG_ROLLBACK_SECRET_SIZE
+ uint8_t secret[CONFIG_ROLLBACK_SECRET_SIZE];
+#endif
+ /* cookie must always be last, as it validates the rest of the data. */
+ uint32_t cookie;
+};
+
+int read_rollback(int region, struct rollback_data *data);
+
+#endif /* __CROS_EC_ROLLBACK_PRIVATE_H */