mmu.h

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/*
 * Copyright (c) 2011-2015 embedded brains GmbH.  All rights reserved.
 *
 *  embedded brains GmbH
 *  Dornierstr. 4
 *  82178 Puchheim
 *  Germany
 *  <rtems@embedded-brains.de>
 *
 * 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_POWERPC_QORIQ_MMU_H
#define LIBBSP_POWERPC_QORIQ_MMU_H
 
#include <stdint.h>
#include <stdbool.h>
 
#include <bspopts.h>
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
#define QORIQ_MMU_MIN_POWER 12
#define QORIQ_MMU_MAX_POWER 30
#define QORIQ_MMU_POWER_STEP 2
 
typedef struct {
    uintptr_t begin;
    uintptr_t last;
    uint32_t mas1;
    uint32_t mas2;
    uint32_t mas3;
    uint32_t mas7;
} qoriq_mmu_entry;
 
typedef struct {
    int count;
    qoriq_mmu_entry entries [QORIQ_TLB1_ENTRY_COUNT];
} qoriq_mmu_context;
 
void qoriq_mmu_context_init(qoriq_mmu_context *self);
 
bool qoriq_mmu_add(
    qoriq_mmu_context *self,
    uintptr_t begin,
    uintptr_t last,
    uint32_t mas1,
    uint32_t mas2,
    uint32_t mas3,
    uint32_t mas7
);
 
void qoriq_mmu_partition(qoriq_mmu_context *self, int max_count);
 
void qoriq_mmu_write_to_tlb1(qoriq_mmu_context *self, int first_tlb);
 
void qoriq_mmu_change_perm(uint32_t test, uint32_t set, uint32_t clear);
 
void qoriq_mmu_config(bool boot_processor, int first_tlb, int scratch_tlb);
 
void qoriq_tlb1_write(
    int esel,
    uint32_t mas1,
    uint32_t mas2,
    uint32_t mas3,
    uint32_t mas7,
    uintptr_t ea,
    int tsize
);
 
void qoriq_tlb1_invalidate(int esel);
 
#ifdef __cplusplus
}
#endif /* __cplusplus */
 
#endif /* LIBBSP_POWERPC_QORIQ_MMU_H */