rom_ext_boot_policy_ptrs.h

// Copyright lowRISC contributors (OpenTitan project).
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0
 
#ifndef OPENTITAN_SW_DEVICE_SILICON_CREATOR_ROM_EXT_ROM_EXT_BOOT_POLICY_PTRS_H_
#define OPENTITAN_SW_DEVICE_SILICON_CREATOR_ROM_EXT_ROM_EXT_BOOT_POLICY_PTRS_H_
 
#include "sw/device/lib/base/macros.h"
#include "sw/device/silicon_creator/lib/base/chip.h"
#include "sw/device/silicon_creator/lib/manifest.h"
 
#include "hw/top_earlgrey/sw/autogen/top_earlgrey.h"
 
#ifdef __cplusplus
extern "C" {
#endif  // __cplusplus
 
static_assert((TOP_EARLGREY_EFLASH_SIZE_BYTES % 2) == 0,
              "Flash size is not divisible by 2");
 
#ifdef OT_PLATFORM_RV32
/**
 * Returns a pointer to the manifest of the first owner boot stage image stored
 * in flash slot A.
 *
 * @return Pointer to the manifest of the first owner boot stage image in slot
 * A.
 */
OT_WARN_UNUSED_RESULT
inline const manifest_t *rom_ext_boot_policy_manifest_a_get(void) {
  return (const manifest_t *)(TOP_EARLGREY_EFLASH_BASE_ADDR +
                              CHIP_ROM_EXT_SIZE_MAX);
}
 
/**
 * Returns a pointer to the manifest of the first owner boot stage image stored
 * in flash slot B.
 *
 * @return Pointer to the manifest of the first owner boot stage image in slot
 * B.
 */
OT_WARN_UNUSED_RESULT
inline const manifest_t *rom_ext_boot_policy_manifest_b_get(void) {
  return (const manifest_t *)(TOP_EARLGREY_EFLASH_BASE_ADDR +
                              (TOP_EARLGREY_EFLASH_SIZE_BYTES / 2) +
                              CHIP_ROM_EXT_SIZE_MAX);
}
#else
/**
 * Declarations for the functions above that should be defined in tests.
 */
const manifest_t *rom_ext_boot_policy_manifest_a_get(void);
const manifest_t *rom_ext_boot_policy_manifest_b_get(void);
#endif
 
#ifdef __cplusplus
}  // extern "C"
#endif  // __cplusplus
 
#endif  // OPENTITAN_SW_DEVICE_SILICON_CREATOR_ROM_EXT_ROM_EXT_BOOT_POLICY_PTRS_H_