arch/arm64/include/asm/pgtable-hwdef.h - linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (C) 2012 ARM Ltd.
  */
 #ifndef __ASM_PGTABLE_HWDEF_H
 #define __ASM_PGTABLE_HWDEF_H

 #include <asm/memory.h>

 /*
  * Number of page-table levels required to address 'va_bits' wide
  * address, without section mapping. We resolve the top (va_bits - PAGE_SHIFT)
  * bits with (PAGE_SHIFT - 3) bits at each page table level. Hence:
  *
  *  levels = DIV_ROUND_UP((va_bits - PAGE_SHIFT), (PAGE_SHIFT - 3))
  *
  * where DIV_ROUND_UP(n, d) => (((n) + (d) - 1) / (d))
  *
  * We cannot include linux/kernel.h which defines DIV_ROUND_UP here
  * due to build issues. So we open code DIV_ROUND_UP here:
  *
  *	((((va_bits) - PAGE_SHIFT) + (PAGE_SHIFT - 3) - 1) / (PAGE_SHIFT - 3))
  *
  * which gets simplified as :
  */
 #define ARM64_HW_PGTABLE_LEVELS(va_bits) (((va_bits) - 4) / (PAGE_SHIFT - 3))

 /*
  * Size mapped by an entry at level n ( 0 <= n <= 3)
  * We map (PAGE_SHIFT - 3) at all translation levels and PAGE_SHIFT bits
  * in the final page. The maximum number of translation levels supported by
  * the architecture is 4. Hence, starting at level n, we have further
  * ((4 - n) - 1) levels of translation excluding the offset within the page.
  * So, the total number of bits mapped by an entry at level n is :
  *
  *  ((4 - n) - 1) * (PAGE_SHIFT - 3) + PAGE_SHIFT
  *
  * Rearranging it a bit we get :
  *   (4 - n) * (PAGE_SHIFT - 3) + 3
  */
 #define ARM64_HW_PGTABLE_LEVEL_SHIFT(n)	((PAGE_SHIFT - 3) * (4 - (n)) + 3)

 #define PTRS_PER_PTE		(1 << (PAGE_SHIFT - 3))

 /*
  * PMD_SHIFT determines the size a level 2 page table entry can map.
  */
 #if CONFIG_PGTABLE_LEVELS > 2
 #define PMD_SHIFT		ARM64_HW_PGTABLE_LEVEL_SHIFT(2)
 #define PMD_SIZE		(_AC(1, UL) << PMD_SHIFT)
 #define PMD_MASK		(~(PMD_SIZE-1))
 #define PTRS_PER_PMD		(1 << (PAGE_SHIFT - 3))
 #endif

 /*
  * PUD_SHIFT determines the size a level 1 page table entry can map.
  */
 #if CONFIG_PGTABLE_LEVELS > 3
 #define PUD_SHIFT		ARM64_HW_PGTABLE_LEVEL_SHIFT(1)
 #define PUD_SIZE		(_AC(1, UL) << PUD_SHIFT)
 #define PUD_MASK		(~(PUD_SIZE-1))
 #define PTRS_PER_PUD		(1 << (PAGE_SHIFT - 3))
 #endif

 /*
  * PGDIR_SHIFT determines the size a top-level page table entry can map
  * (depending on the configuration, this level can be 0, 1 or 2).
  */
 #define PGDIR_SHIFT		ARM64_HW_PGTABLE_LEVEL_SHIFT(4 - CONFIG_PGTABLE_LEVELS)
 #define PGDIR_SIZE		(_AC(1, UL) << PGDIR_SHIFT)
 #define PGDIR_MASK		(~(PGDIR_SIZE-1))
 #define PTRS_PER_PGD		(1 << (VA_BITS - PGDIR_SHIFT))

 /*
  * Contiguous page definitions.
  */
 #define CONT_PTE_SHIFT		(CONFIG_ARM64_CONT_PTE_SHIFT + PAGE_SHIFT)
 #define CONT_PTES		(1 << (CONT_PTE_SHIFT - PAGE_SHIFT))
 #define CONT_PTE_SIZE		(CONT_PTES * PAGE_SIZE)
 #define CONT_PTE_MASK		(~(CONT_PTE_SIZE - 1))

 #define CONT_PMD_SHIFT		(CONFIG_ARM64_CONT_PMD_SHIFT + PMD_SHIFT)
 #define CONT_PMDS		(1 << (CONT_PMD_SHIFT - PMD_SHIFT))
 #define CONT_PMD_SIZE		(CONT_PMDS * PMD_SIZE)
 #define CONT_PMD_MASK		(~(CONT_PMD_SIZE - 1))

 /*
  * Hardware page table definitions.
  *
  * Level 0 descriptor (P4D).
  */
 #define P4D_TYPE_TABLE		(_AT(p4dval_t, 3) << 0)
 #define P4D_TABLE_BIT		(_AT(p4dval_t, 1) << 1)
 #define P4D_TYPE_MASK		(_AT(p4dval_t, 3) << 0)
 #define P4D_TYPE_SECT		(_AT(p4dval_t, 1) << 0)
 #define P4D_SECT_RDONLY		(_AT(p4dval_t, 1) << 7)		/* AP[2] */
 #define P4D_TABLE_PXN		(_AT(p4dval_t, 1) << 59)
 #define P4D_TABLE_UXN		(_AT(p4dval_t, 1) << 60)

 /*
  * Level 1 descriptor (PUD).
  */
 #define PUD_TYPE_TABLE		(_AT(pudval_t, 3) << 0)
 #define PUD_TABLE_BIT		(_AT(pudval_t, 1) << 1)
 #define PUD_TYPE_MASK		(_AT(pudval_t, 3) << 0)
 #define PUD_TYPE_SECT		(_AT(pudval_t, 1) << 0)
 #define PUD_SECT_RDONLY		(_AT(pudval_t, 1) << 7)		/* AP[2] */
 #define PUD_TABLE_PXN		(_AT(pudval_t, 1) << 59)
 #define PUD_TABLE_UXN		(_AT(pudval_t, 1) << 60)

 /*
  * Level 2 descriptor (PMD).
  */
 #define PMD_TYPE_MASK		(_AT(pmdval_t, 3) << 0)
 #define PMD_TYPE_TABLE		(_AT(pmdval_t, 3) << 0)
 #define PMD_TYPE_SECT		(_AT(pmdval_t, 1) << 0)
 #define PMD_TABLE_BIT		(_AT(pmdval_t, 1) << 1)

 /*
  * Section
  */
 #define PMD_SECT_VALID		(_AT(pmdval_t, 1) << 0)
 #define PMD_SECT_USER		(_AT(pmdval_t, 1) << 6)		/* AP[1] */
 #define PMD_SECT_RDONLY		(_AT(pmdval_t, 1) << 7)		/* AP[2] */
 #define PMD_SECT_S		(_AT(pmdval_t, 3) << 8)
 #define PMD_SECT_AF		(_AT(pmdval_t, 1) << 10)
 #define PMD_SECT_NG		(_AT(pmdval_t, 1) << 11)
 #define PMD_SECT_CONT		(_AT(pmdval_t, 1) << 52)
 #define PMD_SECT_PXN		(_AT(pmdval_t, 1) << 53)
 #define PMD_SECT_UXN		(_AT(pmdval_t, 1) << 54)
 #define PMD_TABLE_PXN		(_AT(pmdval_t, 1) << 59)
 #define PMD_TABLE_UXN		(_AT(pmdval_t, 1) << 60)

 /*
  * AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers).
  */
 #define PMD_ATTRINDX(t)		(_AT(pmdval_t, (t)) << 2)
 #define PMD_ATTRINDX_MASK	(_AT(pmdval_t, 7) << 2)

 /*
  * Level 3 descriptor (PTE).
  */
 #define PTE_VALID		(_AT(pteval_t, 1) << 0)
 #define PTE_TYPE_MASK		(_AT(pteval_t, 3) << 0)
 #define PTE_TYPE_PAGE		(_AT(pteval_t, 3) << 0)
 #define PTE_TABLE_BIT		(_AT(pteval_t, 1) << 1)
 #define PTE_USER		(_AT(pteval_t, 1) << 6)		/* AP[1] */
 #define PTE_RDONLY		(_AT(pteval_t, 1) << 7)		/* AP[2] */
 #define PTE_SHARED		(_AT(pteval_t, 3) << 8)		/* SH[1:0], inner shareable */
 #define PTE_AF			(_AT(pteval_t, 1) << 10)	/* Access Flag */
 #define PTE_NG			(_AT(pteval_t, 1) << 11)	/* nG */
 #define PTE_GP			(_AT(pteval_t, 1) << 50)	/* BTI guarded */
 #define PTE_DBM			(_AT(pteval_t, 1) << 51)	/* Dirty Bit Management */
 #define PTE_CONT		(_AT(pteval_t, 1) << 52)	/* Contiguous range */
 #define PTE_PXN			(_AT(pteval_t, 1) << 53)	/* Privileged XN */
 #define PTE_UXN			(_AT(pteval_t, 1) << 54)	/* User XN */

 #define PTE_ADDR_LOW		(((_AT(pteval_t, 1) << (48 - PAGE_SHIFT)) - 1) << PAGE_SHIFT)
 #ifdef CONFIG_ARM64_PA_BITS_52
 #define PTE_ADDR_HIGH		(_AT(pteval_t, 0xf) << 12)
 #define PTE_ADDR_MASK		(PTE_ADDR_LOW | PTE_ADDR_HIGH)
 #else
 #define PTE_ADDR_MASK		PTE_ADDR_LOW
 #endif

 /*
  * AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers).
  */
 #define PTE_ATTRINDX(t)		(_AT(pteval_t, (t)) << 2)
 #define PTE_ATTRINDX_MASK	(_AT(pteval_t, 7) << 2)

 /*
  * Memory Attribute override for Stage-2 (MemAttr[3:0])
  */
 #define PTE_S2_MEMATTR(t)	(_AT(pteval_t, (t)) << 2)

 /*
  * Highest possible physical address supported.
  */
 #define PHYS_MASK_SHIFT		(CONFIG_ARM64_PA_BITS)
 #define PHYS_MASK		((UL(1) << PHYS_MASK_SHIFT) - 1)

 #define TTBR_CNP_BIT		(UL(1) << 0)

 /*
  * TCR flags.
  */
 #define TCR_T0SZ_OFFSET		0
 #define TCR_T1SZ_OFFSET		16
 #define TCR_T0SZ(x)		((UL(64) - (x)) << TCR_T0SZ_OFFSET)
 #define TCR_T1SZ(x)		((UL(64) - (x)) << TCR_T1SZ_OFFSET)
 #define TCR_TxSZ(x)		(TCR_T0SZ(x) | TCR_T1SZ(x))
 #define TCR_TxSZ_WIDTH		6
 #define TCR_T0SZ_MASK		(((UL(1) << TCR_TxSZ_WIDTH) - 1) << TCR_T0SZ_OFFSET)
 #define TCR_T1SZ_MASK		(((UL(1) << TCR_TxSZ_WIDTH) - 1) << TCR_T1SZ_OFFSET)

 #define TCR_EPD0_SHIFT		7
 #define TCR_EPD0_MASK		(UL(1) << TCR_EPD0_SHIFT)
 #define TCR_IRGN0_SHIFT		8
 #define TCR_IRGN0_MASK		(UL(3) << TCR_IRGN0_SHIFT)
 #define TCR_IRGN0_NC		(UL(0) << TCR_IRGN0_SHIFT)
 #define TCR_IRGN0_WBWA		(UL(1) << TCR_IRGN0_SHIFT)
 #define TCR_IRGN0_WT		(UL(2) << TCR_IRGN0_SHIFT)
 #define TCR_IRGN0_WBnWA		(UL(3) << TCR_IRGN0_SHIFT)

 #define TCR_EPD1_SHIFT		23
 #define TCR_EPD1_MASK		(UL(1) << TCR_EPD1_SHIFT)
 #define TCR_IRGN1_SHIFT		24
 #define TCR_IRGN1_MASK		(UL(3) << TCR_IRGN1_SHIFT)
 #define TCR_IRGN1_NC		(UL(0) << TCR_IRGN1_SHIFT)
 #define TCR_IRGN1_WBWA		(UL(1) << TCR_IRGN1_SHIFT)
 #define TCR_IRGN1_WT		(UL(2) << TCR_IRGN1_SHIFT)
 #define TCR_IRGN1_WBnWA		(UL(3) << TCR_IRGN1_SHIFT)

 #define TCR_IRGN_NC		(TCR_IRGN0_NC | TCR_IRGN1_NC)
 #define TCR_IRGN_WBWA		(TCR_IRGN0_WBWA | TCR_IRGN1_WBWA)
 #define TCR_IRGN_WT		(TCR_IRGN0_WT | TCR_IRGN1_WT)
 #define TCR_IRGN_WBnWA		(TCR_IRGN0_WBnWA | TCR_IRGN1_WBnWA)
 #define TCR_IRGN_MASK		(TCR_IRGN0_MASK | TCR_IRGN1_MASK)


 #define TCR_ORGN0_SHIFT		10
 #define TCR_ORGN0_MASK		(UL(3) << TCR_ORGN0_SHIFT)
 #define TCR_ORGN0_NC		(UL(0) << TCR_ORGN0_SHIFT)
 #define TCR_ORGN0_WBWA		(UL(1) << TCR_ORGN0_SHIFT)
 #define TCR_ORGN0_WT		(UL(2) << TCR_ORGN0_SHIFT)
 #define TCR_ORGN0_WBnWA		(UL(3) << TCR_ORGN0_SHIFT)

 #define TCR_ORGN1_SHIFT		26
 #define TCR_ORGN1_MASK		(UL(3) << TCR_ORGN1_SHIFT)
 #define TCR_ORGN1_NC		(UL(0) << TCR_ORGN1_SHIFT)
 #define TCR_ORGN1_WBWA		(UL(1) << TCR_ORGN1_SHIFT)
 #define TCR_ORGN1_WT		(UL(2) << TCR_ORGN1_SHIFT)
 #define TCR_ORGN1_WBnWA		(UL(3) << TCR_ORGN1_SHIFT)

 #define TCR_ORGN_NC		(TCR_ORGN0_NC | TCR_ORGN1_NC)
 #define TCR_ORGN_WBWA		(TCR_ORGN0_WBWA | TCR_ORGN1_WBWA)
 #define TCR_ORGN_WT		(TCR_ORGN0_WT | TCR_ORGN1_WT)
 #define TCR_ORGN_WBnWA		(TCR_ORGN0_WBnWA | TCR_ORGN1_WBnWA)
 #define TCR_ORGN_MASK		(TCR_ORGN0_MASK | TCR_ORGN1_MASK)

 #define TCR_SH0_SHIFT		12
 #define TCR_SH0_MASK		(UL(3) << TCR_SH0_SHIFT)
 #define TCR_SH0_INNER		(UL(3) << TCR_SH0_SHIFT)

 #define TCR_SH1_SHIFT		28
 #define TCR_SH1_MASK		(UL(3) << TCR_SH1_SHIFT)
 #define TCR_SH1_INNER		(UL(3) << TCR_SH1_SHIFT)
 #define TCR_SHARED		(TCR_SH0_INNER | TCR_SH1_INNER)

 #define TCR_TG0_SHIFT		14
 #define TCR_TG0_MASK		(UL(3) << TCR_TG0_SHIFT)
 #define TCR_TG0_4K		(UL(0) << TCR_TG0_SHIFT)
 #define TCR_TG0_64K		(UL(1) << TCR_TG0_SHIFT)
 #define TCR_TG0_16K		(UL(2) << TCR_TG0_SHIFT)

 #define TCR_TG1_SHIFT		30
 #define TCR_TG1_MASK		(UL(3) << TCR_TG1_SHIFT)
 #define TCR_TG1_16K		(UL(1) << TCR_TG1_SHIFT)
 #define TCR_TG1_4K		(UL(2) << TCR_TG1_SHIFT)
 #define TCR_TG1_64K		(UL(3) << TCR_TG1_SHIFT)

 #define TCR_IPS_SHIFT		32
 #define TCR_IPS_MASK		(UL(7) << TCR_IPS_SHIFT)
 #define TCR_A1			(UL(1) << 22)
 #define TCR_ASID16		(UL(1) << 36)
 #define TCR_TBI0		(UL(1) << 37)
 #define TCR_TBI1		(UL(1) << 38)
 #define TCR_HA			(UL(1) << 39)
 #define TCR_HD			(UL(1) << 40)
 #define TCR_TBID1		(UL(1) << 52)
 #define TCR_NFD0		(UL(1) << 53)
 #define TCR_NFD1		(UL(1) << 54)
 #define TCR_E0PD0		(UL(1) << 55)
 #define TCR_E0PD1		(UL(1) << 56)
 #define TCR_TCMA0		(UL(1) << 57)
 #define TCR_TCMA1		(UL(1) << 58)

 /*
  * TTBR.
  */
 #ifdef CONFIG_ARM64_PA_BITS_52
 /*
  * TTBR_ELx[1] is RES0 in this configuration.
  */
 #define TTBR_BADDR_MASK_52	GENMASK_ULL(47, 2)
 #endif

 #ifdef CONFIG_ARM64_VA_BITS_52
 /* Must be at least 64-byte aligned to prevent corruption of the TTBR */
 #define TTBR1_BADDR_4852_OFFSET	(((UL(1) << (52 - PGDIR_SHIFT)) - \
 				 (UL(1) << (48 - PGDIR_SHIFT))) * 8)
 #endif

 #endif
	/* SPDX-License-Identifier: GPL-2.0-only */
	/*
	* Copyright (C) 2012 ARM Ltd.
	*/
	#ifndef __ASM_PGTABLE_HWDEF_H
	#define __ASM_PGTABLE_HWDEF_H

	#include <asm/memory.h>

	/*
	* Number of page-table levels required to address 'va_bits' wide
	* address, without section mapping. We resolve the top (va_bits - PAGE_SHIFT)
	* bits with (PAGE_SHIFT - 3) bits at each page table level. Hence:
	*
	* levels = DIV_ROUND_UP((va_bits - PAGE_SHIFT), (PAGE_SHIFT - 3))
	*
	* where DIV_ROUND_UP(n, d) => (((n) + (d) - 1) / (d))
	*
	* We cannot include linux/kernel.h which defines DIV_ROUND_UP here
	* due to build issues. So we open code DIV_ROUND_UP here:
	*
	* ((((va_bits) - PAGE_SHIFT) + (PAGE_SHIFT - 3) - 1) / (PAGE_SHIFT - 3))
	*
	* which gets simplified as :
	*/
	#define ARM64_HW_PGTABLE_LEVELS(va_bits) (((va_bits) - 4) / (PAGE_SHIFT - 3))

	/*
	* Size mapped by an entry at level n ( 0 <= n <= 3)
	* We map (PAGE_SHIFT - 3) at all translation levels and PAGE_SHIFT bits
	* in the final page. The maximum number of translation levels supported by
	* the architecture is 4. Hence, starting at level n, we have further
	* ((4 - n) - 1) levels of translation excluding the offset within the page.
	* So, the total number of bits mapped by an entry at level n is :
	*
	* ((4 - n) - 1) * (PAGE_SHIFT - 3) + PAGE_SHIFT
	*
	* Rearranging it a bit we get :
	* (4 - n) * (PAGE_SHIFT - 3) + 3
	*/
	#define ARM64_HW_PGTABLE_LEVEL_SHIFT(n) ((PAGE_SHIFT - 3) * (4 - (n)) + 3)

	#define PTRS_PER_PTE (1 << (PAGE_SHIFT - 3))

	/*
	* PMD_SHIFT determines the size a level 2 page table entry can map.
	*/
	#if CONFIG_PGTABLE_LEVELS > 2
	#define PMD_SHIFT ARM64_HW_PGTABLE_LEVEL_SHIFT(2)
	#define PMD_SIZE (_AC(1, UL) << PMD_SHIFT)
	#define PMD_MASK (~(PMD_SIZE-1))
	#define PTRS_PER_PMD (1 << (PAGE_SHIFT - 3))
	#endif

	/*
	* PUD_SHIFT determines the size a level 1 page table entry can map.
	*/
	#if CONFIG_PGTABLE_LEVELS > 3
	#define PUD_SHIFT ARM64_HW_PGTABLE_LEVEL_SHIFT(1)
	#define PUD_SIZE (_AC(1, UL) << PUD_SHIFT)
	#define PUD_MASK (~(PUD_SIZE-1))
	#define PTRS_PER_PUD (1 << (PAGE_SHIFT - 3))
	#endif

	/*
	* PGDIR_SHIFT determines the size a top-level page table entry can map
	* (depending on the configuration, this level can be 0, 1 or 2).
	*/
	#define PGDIR_SHIFT ARM64_HW_PGTABLE_LEVEL_SHIFT(4 - CONFIG_PGTABLE_LEVELS)
	#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
	#define PGDIR_MASK (~(PGDIR_SIZE-1))
	#define PTRS_PER_PGD (1 << (VA_BITS - PGDIR_SHIFT))

	/*
	* Contiguous page definitions.
	*/
	#define CONT_PTE_SHIFT (CONFIG_ARM64_CONT_PTE_SHIFT + PAGE_SHIFT)
	#define CONT_PTES (1 << (CONT_PTE_SHIFT - PAGE_SHIFT))
	#define CONT_PTE_SIZE (CONT_PTES * PAGE_SIZE)
	#define CONT_PTE_MASK (~(CONT_PTE_SIZE - 1))

	#define CONT_PMD_SHIFT (CONFIG_ARM64_CONT_PMD_SHIFT + PMD_SHIFT)
	#define CONT_PMDS (1 << (CONT_PMD_SHIFT - PMD_SHIFT))
	#define CONT_PMD_SIZE (CONT_PMDS * PMD_SIZE)
	#define CONT_PMD_MASK (~(CONT_PMD_SIZE - 1))

	/*
	* Hardware page table definitions.
	*
	* Level 0 descriptor (P4D).
	*/
	#define P4D_TYPE_TABLE (_AT(p4dval_t, 3) << 0)
	#define P4D_TABLE_BIT (_AT(p4dval_t, 1) << 1)
	#define P4D_TYPE_MASK (_AT(p4dval_t, 3) << 0)
	#define P4D_TYPE_SECT (_AT(p4dval_t, 1) << 0)
	#define P4D_SECT_RDONLY (_AT(p4dval_t, 1) << 7) /* AP[2] */
	#define P4D_TABLE_PXN (_AT(p4dval_t, 1) << 59)
	#define P4D_TABLE_UXN (_AT(p4dval_t, 1) << 60)

	/*
	* Level 1 descriptor (PUD).
	*/
	#define PUD_TYPE_TABLE (_AT(pudval_t, 3) << 0)
	#define PUD_TABLE_BIT (_AT(pudval_t, 1) << 1)
	#define PUD_TYPE_MASK (_AT(pudval_t, 3) << 0)
	#define PUD_TYPE_SECT (_AT(pudval_t, 1) << 0)
	#define PUD_SECT_RDONLY (_AT(pudval_t, 1) << 7) /* AP[2] */
	#define PUD_TABLE_PXN (_AT(pudval_t, 1) << 59)
	#define PUD_TABLE_UXN (_AT(pudval_t, 1) << 60)

	/*
	* Level 2 descriptor (PMD).
	*/
	#define PMD_TYPE_MASK (_AT(pmdval_t, 3) << 0)
	#define PMD_TYPE_TABLE (_AT(pmdval_t, 3) << 0)
	#define PMD_TYPE_SECT (_AT(pmdval_t, 1) << 0)
	#define PMD_TABLE_BIT (_AT(pmdval_t, 1) << 1)

	/*
	* Section
	*/
	#define PMD_SECT_VALID (_AT(pmdval_t, 1) << 0)
	#define PMD_SECT_USER (_AT(pmdval_t, 1) << 6) /* AP[1] */
	#define PMD_SECT_RDONLY (_AT(pmdval_t, 1) << 7) /* AP[2] */
	#define PMD_SECT_S (_AT(pmdval_t, 3) << 8)
	#define PMD_SECT_AF (_AT(pmdval_t, 1) << 10)
	#define PMD_SECT_NG (_AT(pmdval_t, 1) << 11)
	#define PMD_SECT_CONT (_AT(pmdval_t, 1) << 52)
	#define PMD_SECT_PXN (_AT(pmdval_t, 1) << 53)
	#define PMD_SECT_UXN (_AT(pmdval_t, 1) << 54)
	#define PMD_TABLE_PXN (_AT(pmdval_t, 1) << 59)
	#define PMD_TABLE_UXN (_AT(pmdval_t, 1) << 60)

	/*
	* AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers).
	*/
	#define PMD_ATTRINDX(t) (_AT(pmdval_t, (t)) << 2)
	#define PMD_ATTRINDX_MASK (_AT(pmdval_t, 7) << 2)

	/*
	* Level 3 descriptor (PTE).
	*/
	#define PTE_VALID (_AT(pteval_t, 1) << 0)
	#define PTE_TYPE_MASK (_AT(pteval_t, 3) << 0)
	#define PTE_TYPE_PAGE (_AT(pteval_t, 3) << 0)
	#define PTE_TABLE_BIT (_AT(pteval_t, 1) << 1)
	#define PTE_USER (_AT(pteval_t, 1) << 6) /* AP[1] */
	#define PTE_RDONLY (_AT(pteval_t, 1) << 7) /* AP[2] */
	#define PTE_SHARED (_AT(pteval_t, 3) << 8) /* SH[1:0], inner shareable */
	#define PTE_AF (_AT(pteval_t, 1) << 10) /* Access Flag */
	#define PTE_NG (_AT(pteval_t, 1) << 11) /* nG */
	#define PTE_GP (_AT(pteval_t, 1) << 50) /* BTI guarded */
	#define PTE_DBM (_AT(pteval_t, 1) << 51) /* Dirty Bit Management */
	#define PTE_CONT (_AT(pteval_t, 1) << 52) /* Contiguous range */
	#define PTE_PXN (_AT(pteval_t, 1) << 53) /* Privileged XN */
	#define PTE_UXN (_AT(pteval_t, 1) << 54) /* User XN */

	#define PTE_ADDR_LOW (((_AT(pteval_t, 1) << (48 - PAGE_SHIFT)) - 1) << PAGE_SHIFT)
	#ifdef CONFIG_ARM64_PA_BITS_52
	#define PTE_ADDR_HIGH (_AT(pteval_t, 0xf) << 12)
	#define PTE_ADDR_MASK (PTE_ADDR_LOW \| PTE_ADDR_HIGH)
	#else
	#define PTE_ADDR_MASK PTE_ADDR_LOW
	#endif

	/*
	* AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers).
	*/
	#define PTE_ATTRINDX(t) (_AT(pteval_t, (t)) << 2)
	#define PTE_ATTRINDX_MASK (_AT(pteval_t, 7) << 2)

	/*
	* Memory Attribute override for Stage-2 (MemAttr[3:0])
	*/
	#define PTE_S2_MEMATTR(t) (_AT(pteval_t, (t)) << 2)

	/*
	* Highest possible physical address supported.
	*/
	#define PHYS_MASK_SHIFT (CONFIG_ARM64_PA_BITS)
	#define PHYS_MASK ((UL(1) << PHYS_MASK_SHIFT) - 1)

	#define TTBR_CNP_BIT (UL(1) << 0)

	/*
	* TCR flags.
	*/
	#define TCR_T0SZ_OFFSET 0
	#define TCR_T1SZ_OFFSET 16
	#define TCR_T0SZ(x) ((UL(64) - (x)) << TCR_T0SZ_OFFSET)
	#define TCR_T1SZ(x) ((UL(64) - (x)) << TCR_T1SZ_OFFSET)
	#define TCR_TxSZ(x) (TCR_T0SZ(x) \| TCR_T1SZ(x))
	#define TCR_TxSZ_WIDTH 6
	#define TCR_T0SZ_MASK (((UL(1) << TCR_TxSZ_WIDTH) - 1) << TCR_T0SZ_OFFSET)
	#define TCR_T1SZ_MASK (((UL(1) << TCR_TxSZ_WIDTH) - 1) << TCR_T1SZ_OFFSET)

	#define TCR_EPD0_SHIFT 7
	#define TCR_EPD0_MASK (UL(1) << TCR_EPD0_SHIFT)
	#define TCR_IRGN0_SHIFT 8
	#define TCR_IRGN0_MASK (UL(3) << TCR_IRGN0_SHIFT)
	#define TCR_IRGN0_NC (UL(0) << TCR_IRGN0_SHIFT)
	#define TCR_IRGN0_WBWA (UL(1) << TCR_IRGN0_SHIFT)
	#define TCR_IRGN0_WT (UL(2) << TCR_IRGN0_SHIFT)
	#define TCR_IRGN0_WBnWA (UL(3) << TCR_IRGN0_SHIFT)

	#define TCR_EPD1_SHIFT 23
	#define TCR_EPD1_MASK (UL(1) << TCR_EPD1_SHIFT)
	#define TCR_IRGN1_SHIFT 24
	#define TCR_IRGN1_MASK (UL(3) << TCR_IRGN1_SHIFT)
	#define TCR_IRGN1_NC (UL(0) << TCR_IRGN1_SHIFT)
	#define TCR_IRGN1_WBWA (UL(1) << TCR_IRGN1_SHIFT)
	#define TCR_IRGN1_WT (UL(2) << TCR_IRGN1_SHIFT)
	#define TCR_IRGN1_WBnWA (UL(3) << TCR_IRGN1_SHIFT)

	#define TCR_IRGN_NC (TCR_IRGN0_NC \| TCR_IRGN1_NC)
	#define TCR_IRGN_WBWA (TCR_IRGN0_WBWA \| TCR_IRGN1_WBWA)
	#define TCR_IRGN_WT (TCR_IRGN0_WT \| TCR_IRGN1_WT)
	#define TCR_IRGN_WBnWA (TCR_IRGN0_WBnWA \| TCR_IRGN1_WBnWA)
	#define TCR_IRGN_MASK (TCR_IRGN0_MASK \| TCR_IRGN1_MASK)


	#define TCR_ORGN0_SHIFT 10
	#define TCR_ORGN0_MASK (UL(3) << TCR_ORGN0_SHIFT)
	#define TCR_ORGN0_NC (UL(0) << TCR_ORGN0_SHIFT)
	#define TCR_ORGN0_WBWA (UL(1) << TCR_ORGN0_SHIFT)
	#define TCR_ORGN0_WT (UL(2) << TCR_ORGN0_SHIFT)
	#define TCR_ORGN0_WBnWA (UL(3) << TCR_ORGN0_SHIFT)

	#define TCR_ORGN1_SHIFT 26
	#define TCR_ORGN1_MASK (UL(3) << TCR_ORGN1_SHIFT)
	#define TCR_ORGN1_NC (UL(0) << TCR_ORGN1_SHIFT)
	#define TCR_ORGN1_WBWA (UL(1) << TCR_ORGN1_SHIFT)
	#define TCR_ORGN1_WT (UL(2) << TCR_ORGN1_SHIFT)
	#define TCR_ORGN1_WBnWA (UL(3) << TCR_ORGN1_SHIFT)

	#define TCR_ORGN_NC (TCR_ORGN0_NC \| TCR_ORGN1_NC)
	#define TCR_ORGN_WBWA (TCR_ORGN0_WBWA \| TCR_ORGN1_WBWA)
	#define TCR_ORGN_WT (TCR_ORGN0_WT \| TCR_ORGN1_WT)
	#define TCR_ORGN_WBnWA (TCR_ORGN0_WBnWA \| TCR_ORGN1_WBnWA)
	#define TCR_ORGN_MASK (TCR_ORGN0_MASK \| TCR_ORGN1_MASK)

	#define TCR_SH0_SHIFT 12
	#define TCR_SH0_MASK (UL(3) << TCR_SH0_SHIFT)
	#define TCR_SH0_INNER (UL(3) << TCR_SH0_SHIFT)

	#define TCR_SH1_SHIFT 28
	#define TCR_SH1_MASK (UL(3) << TCR_SH1_SHIFT)
	#define TCR_SH1_INNER (UL(3) << TCR_SH1_SHIFT)
	#define TCR_SHARED (TCR_SH0_INNER \| TCR_SH1_INNER)

	#define TCR_TG0_SHIFT 14
	#define TCR_TG0_MASK (UL(3) << TCR_TG0_SHIFT)
	#define TCR_TG0_4K (UL(0) << TCR_TG0_SHIFT)
	#define TCR_TG0_64K (UL(1) << TCR_TG0_SHIFT)
	#define TCR_TG0_16K (UL(2) << TCR_TG0_SHIFT)

	#define TCR_TG1_SHIFT 30
	#define TCR_TG1_MASK (UL(3) << TCR_TG1_SHIFT)
	#define TCR_TG1_16K (UL(1) << TCR_TG1_SHIFT)
	#define TCR_TG1_4K (UL(2) << TCR_TG1_SHIFT)
	#define TCR_TG1_64K (UL(3) << TCR_TG1_SHIFT)

	#define TCR_IPS_SHIFT 32
	#define TCR_IPS_MASK (UL(7) << TCR_IPS_SHIFT)
	#define TCR_A1 (UL(1) << 22)
	#define TCR_ASID16 (UL(1) << 36)
	#define TCR_TBI0 (UL(1) << 37)
	#define TCR_TBI1 (UL(1) << 38)
	#define TCR_HA (UL(1) << 39)
	#define TCR_HD (UL(1) << 40)
	#define TCR_TBID1 (UL(1) << 52)
	#define TCR_NFD0 (UL(1) << 53)
	#define TCR_NFD1 (UL(1) << 54)
	#define TCR_E0PD0 (UL(1) << 55)
	#define TCR_E0PD1 (UL(1) << 56)
	#define TCR_TCMA0 (UL(1) << 57)
	#define TCR_TCMA1 (UL(1) << 58)

	/*
	* TTBR.
	*/
	#ifdef CONFIG_ARM64_PA_BITS_52
	/*
	* TTBR_ELx[1] is RES0 in this configuration.
	*/
	#define TTBR_BADDR_MASK_52 GENMASK_ULL(47, 2)
	#endif

	#ifdef CONFIG_ARM64_VA_BITS_52
	/* Must be at least 64-byte aligned to prevent corruption of the TTBR */
	#define TTBR1_BADDR_4852_OFFSET (((UL(1) << (52 - PGDIR_SHIFT)) - \
	(UL(1) << (48 - PGDIR_SHIFT))) * 8)
	#endif

	#endif