rt-thread-official/libcpu/aarch64/common/mmu.h

/*
 * Copyright (c) 2006-2021, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author             Notes
 * 2020-02-20     bigmagic           first version
 */

#ifndef  __MMU_H__
#define  __MMU_H__

/*
 * CR1 bits (CP#15 CR1)
 */
#define CR_M    (1 << 0)    /* MMU enable                */
#define CR_A    (1 << 1)    /* Alignment abort enable        */
#define CR_C    (1 << 2)    /* Dcache enable            */
#define CR_W    (1 << 3)    /* Write buffer enable            */
#define CR_P    (1 << 4)    /* 32-bit exception handler        */
#define CR_D    (1 << 5)    /* 32-bit data address range        */
#define CR_L    (1 << 6)    /* Implementation defined        */
#define CR_B    (1 << 7)    /* Big endian                */
#define CR_S    (1 << 8)    /* System MMU protection        */
#define CR_R    (1 << 9)    /* ROM MMU protection            */
#define CR_F    (1 << 10)    /* Implementation defined        */
#define CR_Z    (1 << 11)    /* Implementation defined        */
#define CR_I    (1 << 12)    /* Icache enable            */
#define CR_V    (1 << 13)    /* Vectors relocated to 0xffff0000    */
#define CR_RR   (1 << 14)    /* Round Robin cache replacement    */
#define CR_L4   (1 << 15)    /* LDR pc can set T bit            */
#define CR_DT   (1 << 16)
#define CR_IT   (1 << 18)
#define CR_ST   (1 << 19)
#define CR_FI   (1 << 21)    /* Fast interrupt (lower latency mode)    */
#define CR_U    (1 << 22)    /* Unaligned access operation        */
#define CR_XP   (1 << 23)    /* Extended page tables            */
#define CR_VE   (1 << 24)    /* Vectored interrupts            */
#define CR_EE   (1 << 25)    /* Exception (Big) Endian        */
#define CR_TRE  (1 << 28)    /* TEX remap enable            */
#define CR_AFE  (1 << 29)    /* Access flag enable            */
#define CR_TE   (1 << 30)    /* Thumb exception enable        */

#define MMU_LEVEL_MASK 0x1ffUL
#define MMU_MAP_ERROR_VANOTALIGN  -1
#define MMU_MAP_ERROR_PANOTALIGN  -2
#define MMU_MAP_ERROR_NOPAGE      -3
#define MMU_MAP_ERROR_CONFLICT    -4

#define MEM_ATTR_MEMORY ((0x1UL << 10) | (0x2UL << 8) | (0x0UL << 6) | (0x1UL << 2))
#define MEM_ATTR_IO     ((0x1UL << 10) | (0x2UL << 8) | (0x0UL << 6) | (0x2UL << 2))

#define BUS_ADDRESS(phys)    (((phys) & ~0xC0000000)  |  0xC0000000)

void mmu_init(void);

void mmu_enable(void);

int armv8_map_2M(unsigned long va, unsigned long pa, int count, unsigned long attr);

void armv8_map(unsigned long va, unsigned long pa, unsigned long size, unsigned long attr);

//dcache
void rt_hw_dcache_enable(void);
void rt_hw_dcache_flush_all(void);
void rt_hw_dcache_flush_range(unsigned long start_addr, unsigned long size);
void rt_hw_dcache_invalidate_range(unsigned long start_addr,unsigned long size);
void rt_hw_dcache_invalidate_all(void);
void rt_hw_dcache_disable(void);

//icache
void rt_hw_icache_enable(void);
void rt_hw_icache_invalidate_all(void);
void rt_hw_icache_disable(void);


#endif  /*__MMU_H__*/