VBoot Reference: 18 Exabytes ought to be enough for everybody

src/platform/vboot_reference/include/firmware_image.h

 /* Copyright (c) 2010 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.
  *
  * Data structure and API definitions for a verified boot firmware image.
  */
 
 #ifndef VBOOT_REFERENCE_FIRMWARE_IMAGE_H_
 #define VBOOT_REFERENCE_FIRMWARE_IMAGE_H_
 
@@ skipping 123 matching lines @@
 
 /* Checks the preamble signature on firmware preamble pointed by
  * [preamble_blob] using the signing key [sign_key].
  *
  * On success, put firmware length into [firmware_len], and return 0.
  * Else, return error code on failure.
  */
 int VerifyFirmwarePreamble(RSAPublicKey* sign_key,
                            const uint8_t* preamble_blob,
                            int algorithm,
-                           int* firmware_len);
+                           uint64_t* firmware_len);
 
 /* Checks the signature on the preamble + firmware data at
  * [preamble_start] and [firmware_data_start].
  * The length of the actual firmware data is firmware_len and it is assumed to
  * be prepended with the signature whose size depends on the signature_algorithm
  * [algorithm]. This signature also covers the preamble data (but not the
  * preamble signature itself).
  *
  * Return 0 on success, error code on failure.
  */
 int VerifyFirmwareData(RSAPublicKey* sign_key,
                        const uint8_t* preamble_start,
                        const uint8_t* firmware_data_start,
-                       int firmware_len,
+                       uint64_t firmware_len,
                        int algorithm);
 
 /* Performs a chained verify of the firmware blob [firmware_blob].
  *
  * Returns 0 on success, error code on failure.
  *
  * NOTE: The length of the firmware blob is derived from reading the fields
  * in the first few bytes of the buffer. This might look risky but in firmware
  * land, the start address of the firmware_blob will always be fixed depending
  * on the memory map on the particular platform. In addition, the signature on
@@ skipping 42 matching lines @@
  * Returns the code path to follow. It is one of:
  * BOOT_FIRMWARE_A_CONTINUE          Boot from Firmware A
  * BOOT_FIRMWARE_B_CONTINUE          Boot from Firmware B
  * BOOT_FIRMWARE_RECOVERY_CONTINUE   Jump to recovery mode
  */
 int VerifyFirmwareDriver_f(uint8_t* root_key_blob,
                            uint8_t* firmwareA,
                            uint8_t* firmwareB);
 
 #endif  /* VBOOT_REFERENCE_FIRMWARE_IMAGE_H_ */