1 /* 2 * Copyright (c) 2014-2021, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef TZC400_H 8 #define TZC400_H 9 10 #include <drivers/arm/tzc_common.h> 11 #include <lib/utils_def.h> 12 13 #define BUILD_CONFIG_OFF U(0x000) 14 #define GATE_KEEPER_OFF U(0x008) 15 #define SPECULATION_CTRL_OFF U(0x00c) 16 #define INT_STATUS U(0x010) 17 #define INT_CLEAR U(0x014) 18 19 #define FAIL_ADDRESS_LOW_OFF U(0x020) 20 #define FAIL_ADDRESS_HIGH_OFF U(0x024) 21 #define FAIL_CONTROL_OFF U(0x028) 22 #define FAIL_ID U(0x02c) 23 24 /* ID registers not common across different varieties of TZC */ 25 #define PID5 U(0xFD4) 26 #define PID6 U(0xFD8) 27 #define PID7 U(0xFDC) 28 29 #define BUILD_CONFIG_NF_SHIFT 24 30 #define BUILD_CONFIG_NF_MASK U(0x3) 31 #define BUILD_CONFIG_AW_SHIFT 8 32 #define BUILD_CONFIG_AW_MASK U(0x3f) 33 #define BUILD_CONFIG_NR_SHIFT 0 34 #define BUILD_CONFIG_NR_MASK U(0x1f) 35 36 /* 37 * Number of gate keepers is implementation defined. But we know the max for 38 * this device is 4. Get implementation details from BUILD_CONFIG. 39 */ 40 #define GATE_KEEPER_OS_SHIFT 16 41 #define GATE_KEEPER_OS_MASK U(0xf) 42 #define GATE_KEEPER_OR_SHIFT 0 43 #define GATE_KEEPER_OR_MASK U(0xf) 44 #define GATE_KEEPER_FILTER_MASK U(0x1) 45 46 /* Speculation is enabled by default. */ 47 #define SPECULATION_CTRL_WRITE_DISABLE BIT_32(1) 48 #define SPECULATION_CTRL_READ_DISABLE BIT_32(0) 49 50 /* Max number of filters allowed is 4. */ 51 #define INT_STATUS_OVERLAP_SHIFT 16 52 #define INT_STATUS_OVERLAP_MASK U(0xf) 53 #define INT_STATUS_OVERRUN_SHIFT 8 54 #define INT_STATUS_OVERRUN_MASK U(0xf) 55 #define INT_STATUS_STATUS_SHIFT 0 56 #define INT_STATUS_STATUS_MASK U(0xf) 57 58 #define INT_CLEAR_CLEAR_SHIFT 0 59 #define INT_CLEAR_CLEAR_MASK U(0xf) 60 61 #define FAIL_CONTROL_DIR_SHIFT 24 62 #define FAIL_CONTROL_DIR_READ U(0) 63 #define FAIL_CONTROL_DIR_WRITE U(1) 64 #define FAIL_CONTROL_NS_SHIFT 21 65 #define FAIL_CONTROL_NS_SECURE U(0) 66 #define FAIL_CONTROL_NS_NONSECURE U(1) 67 #define FAIL_CONTROL_PRIV_SHIFT 20 68 #define FAIL_CONTROL_PRIV_UNPRIV U(0) 69 #define FAIL_CONTROL_PRIV_PRIV U(1) 70 71 /* 72 * FAIL_ID_ID_MASK depends on AID_WIDTH which is platform specific. 73 * Platform should provide the value on initialisation. 74 */ 75 #define FAIL_ID_VNET_SHIFT 24 76 #define FAIL_ID_VNET_MASK U(0xf) 77 #define FAIL_ID_ID_SHIFT 0 78 79 #define TZC_400_PERIPHERAL_ID U(0x460) 80 81 /* Filter enable bits in a TZC */ 82 #define TZC_400_REGION_ATTR_F_EN_MASK U(0xf) 83 #define TZC_400_REGION_ATTR_FILTER_BIT(x) (U(1) << (x)) 84 #define TZC_400_REGION_ATTR_FILTER_BIT_ALL TZC_400_REGION_ATTR_F_EN_MASK 85 86 /* 87 * All TZC region configuration registers are placed one after another. It 88 * depicts size of block of registers for programming each region. 89 */ 90 #define TZC_400_REGION_SIZE U(0x20) 91 #define TZC_400_ACTION_OFF U(0x4) 92 93 #define FILTER_OFFSET U(0x10) 94 95 #ifndef __ASSEMBLER__ 96 97 #include <cdefs.h> 98 #include <stdint.h> 99 100 /******************************************************************************* 101 * Function & variable prototypes 102 ******************************************************************************/ 103 void tzc400_init(uintptr_t base); 104 void tzc400_configure_region0(unsigned int sec_attr, 105 unsigned int ns_device_access); 106 void tzc400_configure_region(unsigned int filters, 107 unsigned int region, 108 unsigned long long region_base, 109 unsigned long long region_top, 110 unsigned int sec_attr, 111 unsigned int nsaid_permissions); 112 void tzc400_update_filters(unsigned int region, unsigned int filters); 113 void tzc400_set_action(unsigned int action); 114 void tzc400_enable_filters(void); 115 void tzc400_disable_filters(void); 116 int tzc400_it_handler(void); 117 118 static inline void tzc_init(uintptr_t base) 119 { 120 tzc400_init(base); 121 } 122 123 static inline void tzc_configure_region0( 124 unsigned int sec_attr, 125 unsigned int ns_device_access) 126 { 127 tzc400_configure_region0(sec_attr, ns_device_access); 128 } 129 130 static inline void tzc_configure_region( 131 unsigned int filters, 132 unsigned int region, 133 unsigned long long region_base, 134 unsigned long long region_top, 135 unsigned int sec_attr, 136 unsigned int ns_device_access) 137 { 138 tzc400_configure_region(filters, region, region_base, 139 region_top, sec_attr, ns_device_access); 140 } 141 142 static inline void tzc_set_action(unsigned int action) 143 { 144 tzc400_set_action(action); 145 } 146 147 148 static inline void tzc_enable_filters(void) 149 { 150 tzc400_enable_filters(); 151 } 152 153 static inline void tzc_disable_filters(void) 154 { 155 tzc400_disable_filters(); 156 } 157 158 #endif /* __ASSEMBLER__ */ 159 160 #endif /* TZC400_H */ 161