1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/net/sfc/base/ef10_signed_image_layout.h b/drivers/net/sfc/base/ef10_signed_image_layout.h
new file mode 100644
index 00000000..a35d1601
--- /dev/null
+++ b/drivers/net/sfc/base/ef10_signed_image_layout.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2016-2018 Solarflare Communications Inc.
+ * All rights reserved.
+ */
+
+/* These structures define the layouts for the signed firmware image binary
+ * saved in NVRAM. The original image is in the Cryptographic message
+ * syntax (CMS) format which contains the bootable firmware binary plus the
+ * signatures. The entire image is written into NVRAM to enable the firmware
+ * to validate the signatures. However, the bootrom still requires the
+ * bootable-image to start at offset 0 of the NVRAM partition. Hence the image
+ * is parsed upfront by host utilities (sfupdate) and written into nvram as
+ * 'signed_image_chunks' described by a header.
+ *
+ * This file is used by the MC as well as host-utilities (sfupdate).
+ */
+
+
+#ifndef CI_MGMT_SIGNED_IMAGE_LAYOUT_H
+#define CI_MGMT_SIGNED_IMAGE_LAYOUT_H
+
+/* Signed image chunk type identifiers */
+enum {
+  SIGNED_IMAGE_CHUNK_CMS_HEADER,        /* CMS header describing the signed data */
+  SIGNED_IMAGE_CHUNK_REFLASH_HEADER,    /* Reflash header */
+  SIGNED_IMAGE_CHUNK_IMAGE,             /* Bootable binary image */
+  SIGNED_IMAGE_CHUNK_REFLASH_TRAILER,   /* Reflash trailer */
+  SIGNED_IMAGE_CHUNK_SIGNATURE,         /* Remaining contents of the signed image,
+                                         * including the certifiates and signature */
+  NUM_SIGNED_IMAGE_CHUNKS,
+};
+
+/* Magic */
+#define SIGNED_IMAGE_CHUNK_HDR_MAGIC 0xEF105161 /* EF10 SIGned Image */
+
+/* Initial version definition - version 1 */
+#define SIGNED_IMAGE_CHUNK_HDR_VERSION 0x1
+
+/* Header length is 32 bytes */
+#define SIGNED_IMAGE_CHUNK_HDR_LEN   32
+/* Structure describing the header of each chunk of signed image
+ * as stored in nvram
+ */
+typedef struct signed_image_chunk_hdr_e {
+  /* Magic field to recognise a valid entry
+   * should match SIGNED_IMAGE_CHUNK_HDR_MAGIC
+   */
+  uint32_t magic;
+  /* Version number of this header */
+  uint32_t version;
+  /* Chunk type identifier */
+  uint32_t id;
+  /* Chunk offset */
+  uint32_t offset;
+  /* Chunk length */
+  uint32_t len;
+  /* Reserved for future expansion of this structure - always set to zeros */
+  uint32_t reserved[3];
+} signed_image_chunk_hdr_t;
+
+#endif /* CI_MGMT_SIGNED_IMAGE_LAYOUT_H */