text: /* Copyright 2021 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.
   */
  
  #ifndef __CROS_EC_MPU_H
  #define __CROS_EC_MPU_H
  
  /* This matches up with core/cortex-m/include/mpu.h */
  
  /* Location of iram.text */
  extern char __iram_text_start;
  extern char __iram_text_end;
  
  /** Enable MPU */
  void mpu_enable(void);
  
  /**
   * Returns the value of MPU type register
   *
   * @returns 0 for now (always)
   */
  uint32_t mpu_get_type(void);
  
  /** Protect RAM from code execution */
  int mpu_protect_data_ram(void);
  
  /** Protect code RAM from being overwritten */
  int mpu_protect_code_ram(void);
  
  /** Protect internal mapped flash memory from code execution */
  int mpu_lock_ro_flash(void);
  int mpu_lock_rw_flash(void);
  
  #endif /* __CROS_EC_CPU_H */
  