87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 MediaTek Inc.
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* Author: Sagy Shih <sagy.shih@mediatek.com>
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*/
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#ifndef __MPU_H__
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#define __MPU_H__
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#include <linux/types.h>
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#define CCCI_API_READY 0
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#define EMI_MPU_TEST 0
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#define EMI_MPU_MAX_CMD_LEN 128
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#define EMI_MPU_MAX_TOKEN 4
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#define CCCI_STR_MAX_LEN 60
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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 UNLOCK 0
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#define LOCK 1
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#define EMI_MPU_DGROUP_NUM (EMI_MPU_DOMAIN_NUM / 8)
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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[0] = 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, \
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d15, d14, d13, d12, d11, d10, 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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struct mst_tbl_entry {
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u32 master;
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u32 port;
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u32 id_mask;
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u32 id_val;
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const char *note;
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const char *name;
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};
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extern void bypass_init(unsigned int *init_flag);
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extern int bypass_violation(unsigned int mpus, unsigned int *init_flag);
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extern int is_md_master(unsigned int master_id, unsigned int domain_id);
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extern void set_ap_region_permission(unsigned int apc[EMI_MPU_DGROUP_NUM]);
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extern int emi_mpu_set_protection(struct emi_region_info_t *region_info);
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extern int emi_mpu_set_single_permission(unsigned int region,
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unsigned int domain,
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unsigned int permission);
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extern void clear_md_violation(void);
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#endif /* __MPU_H__ */
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