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8454f0d65e
EMI MPU stands for external memory interface memory protect unit. MT8188 supports 32 regions and 16 domains. Signed-off-by: Dawei Chien <dawei.chien@mediatek.com> Change-Id: I9bbeb355665401cc71dda6db22157d9d751570d1
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/*
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* Copyright (c) 2022, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef EMI_MPU_H
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#define EMI_MPU_H
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#include <emi_mpu_priv.h>
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#include <platform_def.h>
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#define NO_PROTECTION (0)
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#define SEC_RW (1)
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#define SEC_RW_NSEC_R (2)
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#define SEC_RW_NSEC_W (3)
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#define SEC_R_NSEC_R (4)
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#define FORBIDDEN (5)
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#define SEC_R_NSEC_RW (6)
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#define LOCK (1)
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#define UNLOCK (0)
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#if (EMI_MPU_DGROUP_NUM == 1)
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#define SET_ACCESS_PERMISSION(apc_ary, lock, d7, d6, d5, d4, d3, d2, d1, d0) \
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do { \
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apc_ary[1] = 0; \
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apc_ary[0] = \
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(((unsigned int) d7) << 21) | (((unsigned int) d6) << 18) | \
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(((unsigned int) d5) << 15) | (((unsigned int) d4) << 12) | \
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(((unsigned int) d3) << 9) | (((unsigned int) d2) << 6) | \
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(((unsigned int) d1) << 3) | ((unsigned int) d0) | \
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((unsigned int) lock << 31); \
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} while (0)
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#elif (EMI_MPU_DGROUP_NUM == 2)
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#define SET_ACCESS_PERMISSION(apc_ary, lock, d15, d14, d13, d12, d11, d10, \
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d9, d8, d7, d6, d5, d4, d3, d2, d1, d0) \
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do { \
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apc_ary[1] = \
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(((unsigned int) d15) << 21) | (((unsigned int) d14) << 18) | \
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(((unsigned int) d13) << 15) | (((unsigned int) d12) << 12) | \
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(((unsigned int) d11) << 9) | (((unsigned int) d10) << 6) | \
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(((unsigned int) d9) << 3) | ((unsigned int) d8); \
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apc_ary[0] = \
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(((unsigned int) d7) << 21) | (((unsigned int) d6) << 18) | \
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(((unsigned int) d5) << 15) | (((unsigned int) d4) << 12) | \
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(((unsigned int) d3) << 9) | (((unsigned int) d2) << 6) | \
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(((unsigned int) d1) << 3) | ((unsigned int) d0) | \
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((unsigned int) lock << 31); \
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} while (0)
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#endif
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struct emi_region_info_t {
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unsigned long long start;
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unsigned long long end;
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unsigned int region;
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unsigned int apc[EMI_MPU_DGROUP_NUM];
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};
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int emi_mpu_init(void);
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int emi_mpu_set_protection(struct emi_region_info_t *region_info);
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void set_emi_mpu_regions(void);
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#endif
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