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/*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __TZC_COMMON_H__
#define __TZC_COMMON_H__
/*
* Offset of core registers from the start of the base of configuration
* registers for each region.
*/
/* ID Registers */
#define PID0_OFF 0xfe0
#define PID1_OFF 0xfe4
#define PID2_OFF 0xfe8
#define PID3_OFF 0xfec
#define PID4_OFF 0xfd0
#define CID0_OFF 0xff0
#define CID1_OFF 0xff4
#define CID2_OFF 0xff8
#define CID3_OFF 0xffc
/* Bit positions of TZC_ACTION registers */
#define TZC_ACTION_RV_SHIFT 0
#define TZC_ACTION_RV_MASK 0x3
#define TZC_ACTION_RV_LOWOK 0x0
#define TZC_ACTION_RV_LOWERR 0x1
#define TZC_ACTION_RV_HIGHOK 0x2
#define TZC_ACTION_RV_HIGHERR 0x3
/* Used along with 'tzc_region_attributes_t' below */
#define TZC_REGION_ATTR_S_RD_SHIFT 30
#define TZC_REGION_ATTR_S_WR_SHIFT 31
#define TZC_REGION_ATTR_F_EN_SHIFT 0
#define TZC_REGION_ATTR_SEC_SHIFT 30
#define TZC_REGION_ATTR_S_RD_MASK 0x1
#define TZC_REGION_ATTR_S_WR_MASK 0x1
#define TZC_REGION_ATTR_SEC_MASK 0x3
#define TZC_REGION_ACCESS_WR_EN_SHIFT 16
#define TZC_REGION_ACCESS_RD_EN_SHIFT 0
#define TZC_REGION_ACCESS_ID_MASK 0xf
/* Macros for allowing Non-Secure access to a region based on NSAID */
#define TZC_REGION_ACCESS_RD(nsaid) \
((1 << ((nsaid) & TZC_REGION_ACCESS_ID_MASK)) << \
TZC_REGION_ACCESS_RD_EN_SHIFT)
#define TZC_REGION_ACCESS_WR(nsaid) \
((1 << ((nsaid) & TZC_REGION_ACCESS_ID_MASK)) << \
TZC_REGION_ACCESS_WR_EN_SHIFT)
#define TZC_REGION_ACCESS_RDWR(nsaid) \
(TZC_REGION_ACCESS_RD(nsaid) | \
TZC_REGION_ACCESS_WR(nsaid))
#ifndef __ASSEMBLY__
/* Returns offset of registers to program for a given region no */
#define TZC_REGION_OFFSET(region_size, region_no) \
((region_size) * (region_no))
/*
* What type of action is expected when an access violation occurs.
* The memory requested is returned as zero. But we can also raise an event to
* let the system know it happened.
* We can raise an interrupt(INT) and/or cause an exception(ERR).
* TZC_ACTION_NONE - No interrupt, no Exception
* TZC_ACTION_ERR - No interrupt, raise exception -> sync external
* data abort
* TZC_ACTION_INT - Raise interrupt, no exception
* TZC_ACTION_ERR_INT - Raise interrupt, raise exception -> sync
* external data abort
*/
typedef enum {
TZC_ACTION_NONE = 0,
TZC_ACTION_ERR = 1,
TZC_ACTION_INT = 2,
TZC_ACTION_ERR_INT = (TZC_ACTION_ERR | TZC_ACTION_INT)
} tzc_action_t;
/*
* Controls secure access to a region. If not enabled secure access is not
* allowed to region.
*/
typedef enum {
TZC_REGION_S_NONE = 0,
TZC_REGION_S_RD = 1,
TZC_REGION_S_WR = 2,
TZC_REGION_S_RDWR = (TZC_REGION_S_RD | TZC_REGION_S_WR)
} tzc_region_attributes_t;
#endif /* __ASSEMBLY__ */
#endif /* __TZC_COMMON_H__ */