elfloader-tool/include/arch-arm/64/mode/structures.h

/*
 * Copyright 2014, General Dynamics C4 Systems
 *
 * SPDX-License-Identifier: GPL-2.0-only
 */

#pragma once

#define ARM_1GB_BLOCK_BITS      30
#define ARM_2MB_BLOCK_BITS      21

#define PGDE_SIZE_BITS          3
#define PGD_BITS                9
#define PGD_SIZE_BITS           (PGD_BITS + PGDE_SIZE_BITS)

#define PUDE_SIZE_BITS          3
#define PUD_BITS                9
#define PUD_SIZE_BITS           (PUD_BITS + PUDE_SIZE_BITS)

#define PMDE_SIZE_BITS          3
#define PMD_BITS                9
#define PMD_SIZE_BITS           (PMD_BITS + PMDE_SIZE_BITS)

#define GET_PGD_INDEX(x)        (((x) >> (ARM_2MB_BLOCK_BITS + PMD_BITS + PUD_BITS)) & MASK(PGD_BITS))
#define GET_PUD_INDEX(x)        (((x) >> (ARM_2MB_BLOCK_BITS + PMD_BITS)) & MASK(PUD_BITS))
#define GET_PMD_INDEX(x)        (((x) >> (ARM_2MB_BLOCK_BITS)) & MASK(PMD_BITS))

extern uint64_t _boot_pgd_up[BIT(PGD_BITS)];
extern uint64_t _boot_pud_up[BIT(PUD_BITS)];
extern uint64_t _boot_pmd_up[BIT(PMD_BITS)];

extern uint64_t _boot_pgd_down[BIT(PGD_BITS)];
extern uint64_t _boot_pud_down[BIT(PUD_BITS)];