source: rtems/bsps/arm/raspberrypi/include/bsp/mmu.h @ ba619b7f

/**
 * @file
 *
 * @ingroup rapberrypi_mmu
 *
 * @brief MMU API.
 */

/*
 * Copyright (c) 2013 Alan Cudmore.
 * based on work by:
 * Copyright (c) 2009 embedded brains GmbH.  All rights reserved.
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *
 *  http://www.rtems.org/license/LICENSE
 *
 */

#ifndef LIBBSP_ARM_RASPBERRYPI_MMU_H
#define LIBBSP_ARM_RASPBERRYPI_MMU_H

#include <libcpu/arm-cp15.h>

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

/**
 * @defgroup raspberrypi_mmu MMU Support
 *
 * @ingroup RTEMSBSPsARMRaspberryPi
 *
 * @brief MMU support.
 *
 * @{
 */

#define RASPBERRYPI_MMU_CLIENT_DOMAIN 15U

#define RASPBERRYPI_MMU_READ_ONLY \
  ((RASPBERRYPI_MMU_CLIENT_DOMAIN << ARM_MMU_SECT_DOMAIN_SHIFT) \
    | ARM_MMU_SECT_DEFAULT)

#define RASPBERRYPI_MMU_READ_ONLY_CACHED \
  (RASPBERRYPI_MMU_READ_ONLY | ARM_MMU_SECT_C | ARM_MMU_SECT_B)

#define RASPBERRYPI_MMU_READ_WRITE \
  ((RASPBERRYPI_MMU_CLIENT_DOMAIN << ARM_MMU_SECT_DOMAIN_SHIFT) \
    | ARM_MMU_SECT_AP_0 \
    | ARM_MMU_SECT_DEFAULT)

#define RASPBERRYPI_MMU_READ_WRITE_CACHED \
  (RASPBERRYPI_MMU_READ_WRITE | ARM_MMU_SECT_C | ARM_MMU_SECT_B)

/** @} */

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* LIBBSP_ARM_RASPBERRYPI_MMU_H */