1 /* 2 * Copyright (C) 2012,2013 - ARM Ltd 3 * Author: Marc Zyngier <marc.zyngier@arm.com> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #ifndef __ARM64_KVM_ARM_H__ 19 #define __ARM64_KVM_ARM_H__ 20 21 #include <asm/esr.h> 22 #include <asm/memory.h> 23 #include <asm/types.h> 24 25 /* Hyp Configuration Register (HCR) bits */ 26 #define HCR_ID (UL(1) << 33) 27 #define HCR_CD (UL(1) << 32) 28 #define HCR_RW_SHIFT 31 29 #define HCR_RW (UL(1) << HCR_RW_SHIFT) 30 #define HCR_TRVM (UL(1) << 30) 31 #define HCR_HCD (UL(1) << 29) 32 #define HCR_TDZ (UL(1) << 28) 33 #define HCR_TGE (UL(1) << 27) 34 #define HCR_TVM (UL(1) << 26) 35 #define HCR_TTLB (UL(1) << 25) 36 #define HCR_TPU (UL(1) << 24) 37 #define HCR_TPC (UL(1) << 23) 38 #define HCR_TSW (UL(1) << 22) 39 #define HCR_TAC (UL(1) << 21) 40 #define HCR_TIDCP (UL(1) << 20) 41 #define HCR_TSC (UL(1) << 19) 42 #define HCR_TID3 (UL(1) << 18) 43 #define HCR_TID2 (UL(1) << 17) 44 #define HCR_TID1 (UL(1) << 16) 45 #define HCR_TID0 (UL(1) << 15) 46 #define HCR_TWE (UL(1) << 14) 47 #define HCR_TWI (UL(1) << 13) 48 #define HCR_DC (UL(1) << 12) 49 #define HCR_BSU (3 << 10) 50 #define HCR_BSU_IS (UL(1) << 10) 51 #define HCR_FB (UL(1) << 9) 52 #define HCR_VA (UL(1) << 8) 53 #define HCR_VI (UL(1) << 7) 54 #define HCR_VF (UL(1) << 6) 55 #define HCR_AMO (UL(1) << 5) 56 #define HCR_IMO (UL(1) << 4) 57 #define HCR_FMO (UL(1) << 3) 58 #define HCR_PTW (UL(1) << 2) 59 #define HCR_SWIO (UL(1) << 1) 60 #define HCR_VM (UL(1) << 0) 61 62 /* 63 * The bits we set in HCR: 64 * RW: 64bit by default, can be overriden for 32bit VMs 65 * TAC: Trap ACTLR 66 * TSC: Trap SMC 67 * TVM: Trap VM ops (until M+C set in SCTLR_EL1) 68 * TSW: Trap cache operations by set/way 69 * TWE: Trap WFE 70 * TWI: Trap WFI 71 * TIDCP: Trap L2CTLR/L2ECTLR 72 * BSU_IS: Upgrade barriers to the inner shareable domain 73 * FB: Force broadcast of all maintainance operations 74 * AMO: Override CPSR.A and enable signaling with VA 75 * IMO: Override CPSR.I and enable signaling with VI 76 * FMO: Override CPSR.F and enable signaling with VF 77 * SWIO: Turn set/way invalidates into set/way clean+invalidate 78 */ 79 #define HCR_GUEST_FLAGS (HCR_TSC | HCR_TSW | HCR_TWE | HCR_TWI | HCR_VM | \ 80 HCR_TVM | HCR_BSU_IS | HCR_FB | HCR_TAC | \ 81 HCR_AMO | HCR_SWIO | HCR_TIDCP | HCR_RW) 82 #define HCR_VIRT_EXCP_MASK (HCR_VA | HCR_VI | HCR_VF) 83 #define HCR_INT_OVERRIDE (HCR_FMO | HCR_IMO) 84 85 86 /* Hyp System Control Register (SCTLR_EL2) bits */ 87 #define SCTLR_EL2_EE (1 << 25) 88 #define SCTLR_EL2_WXN (1 << 19) 89 #define SCTLR_EL2_I (1 << 12) 90 #define SCTLR_EL2_SA (1 << 3) 91 #define SCTLR_EL2_C (1 << 2) 92 #define SCTLR_EL2_A (1 << 1) 93 #define SCTLR_EL2_M 1 94 #define SCTLR_EL2_FLAGS (SCTLR_EL2_M | SCTLR_EL2_A | SCTLR_EL2_C | \ 95 SCTLR_EL2_SA | SCTLR_EL2_I) 96 97 /* TCR_EL2 Registers bits */ 98 #define TCR_EL2_TBI (1 << 20) 99 #define TCR_EL2_PS (7 << 16) 100 #define TCR_EL2_PS_40B (2 << 16) 101 #define TCR_EL2_TG0 (1 << 14) 102 #define TCR_EL2_SH0 (3 << 12) 103 #define TCR_EL2_ORGN0 (3 << 10) 104 #define TCR_EL2_IRGN0 (3 << 8) 105 #define TCR_EL2_T0SZ 0x3f 106 #define TCR_EL2_MASK (TCR_EL2_TG0 | TCR_EL2_SH0 | \ 107 TCR_EL2_ORGN0 | TCR_EL2_IRGN0 | TCR_EL2_T0SZ) 108 109 #define TCR_EL2_FLAGS (TCR_EL2_PS_40B) 110 111 /* VTCR_EL2 Registers bits */ 112 #define VTCR_EL2_PS_MASK (7 << 16) 113 #define VTCR_EL2_TG0_MASK (1 << 14) 114 #define VTCR_EL2_TG0_4K (0 << 14) 115 #define VTCR_EL2_TG0_64K (1 << 14) 116 #define VTCR_EL2_SH0_MASK (3 << 12) 117 #define VTCR_EL2_SH0_INNER (3 << 12) 118 #define VTCR_EL2_ORGN0_MASK (3 << 10) 119 #define VTCR_EL2_ORGN0_WBWA (1 << 10) 120 #define VTCR_EL2_IRGN0_MASK (3 << 8) 121 #define VTCR_EL2_IRGN0_WBWA (1 << 8) 122 #define VTCR_EL2_SL0_MASK (3 << 6) 123 #define VTCR_EL2_SL0_LVL1 (1 << 6) 124 #define VTCR_EL2_T0SZ_MASK 0x3f 125 #define VTCR_EL2_T0SZ_40B 24 126 127 /* 128 * We configure the Stage-2 page tables to always restrict the IPA space to be 129 * 40 bits wide (T0SZ = 24). Systems with a PARange smaller than 40 bits are 130 * not known to exist and will break with this configuration. 131 * 132 * VTCR_EL2.PS is extracted from ID_AA64MMFR0_EL1.PARange at boot time 133 * (see hyp-init.S). 134 * 135 * Note that when using 4K pages, we concatenate two first level page tables 136 * together. 137 * 138 * The magic numbers used for VTTBR_X in this patch can be found in Tables 139 * D4-23 and D4-25 in ARM DDI 0487A.b. 140 */ 141 #ifdef CONFIG_ARM64_64K_PAGES 142 /* 143 * Stage2 translation configuration: 144 * 40bits input (T0SZ = 24) 145 * 64kB pages (TG0 = 1) 146 * 2 level page tables (SL = 1) 147 */ 148 #define VTCR_EL2_FLAGS (VTCR_EL2_TG0_64K | VTCR_EL2_SH0_INNER | \ 149 VTCR_EL2_ORGN0_WBWA | VTCR_EL2_IRGN0_WBWA | \ 150 VTCR_EL2_SL0_LVL1 | VTCR_EL2_T0SZ_40B) 151 #define VTTBR_X (38 - VTCR_EL2_T0SZ_40B) 152 #else 153 /* 154 * Stage2 translation configuration: 155 * 40bits input (T0SZ = 24) 156 * 4kB pages (TG0 = 0) 157 * 3 level page tables (SL = 1) 158 */ 159 #define VTCR_EL2_FLAGS (VTCR_EL2_TG0_4K | VTCR_EL2_SH0_INNER | \ 160 VTCR_EL2_ORGN0_WBWA | VTCR_EL2_IRGN0_WBWA | \ 161 VTCR_EL2_SL0_LVL1 | VTCR_EL2_T0SZ_40B) 162 #define VTTBR_X (37 - VTCR_EL2_T0SZ_40B) 163 #endif 164 165 #define VTTBR_BADDR_SHIFT (VTTBR_X - 1) 166 #define VTTBR_BADDR_MASK (((UL(1) << (PHYS_MASK_SHIFT - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT) 167 #define VTTBR_VMID_SHIFT (UL(48)) 168 #define VTTBR_VMID_MASK (UL(0xFF) << VTTBR_VMID_SHIFT) 169 170 /* Hyp System Trap Register */ 171 #define HSTR_EL2_TTEE (1 << 16) 172 #define HSTR_EL2_T(x) (1 << x) 173 174 /* Hyp Coprocessor Trap Register */ 175 #define CPTR_EL2_TCPAC (1 << 31) 176 #define CPTR_EL2_TTA (1 << 20) 177 #define CPTR_EL2_TFP (1 << 10) 178 179 /* Hyp Debug Configuration Register bits */ 180 #define MDCR_EL2_TDRA (1 << 11) 181 #define MDCR_EL2_TDOSA (1 << 10) 182 #define MDCR_EL2_TDA (1 << 9) 183 #define MDCR_EL2_TDE (1 << 8) 184 #define MDCR_EL2_HPME (1 << 7) 185 #define MDCR_EL2_TPM (1 << 6) 186 #define MDCR_EL2_TPMCR (1 << 5) 187 #define MDCR_EL2_HPMN_MASK (0x1F) 188 189 /* For compatibility with fault code shared with 32-bit */ 190 #define FSC_FAULT ESR_ELx_FSC_FAULT 191 #define FSC_ACCESS ESR_ELx_FSC_ACCESS 192 #define FSC_PERM ESR_ELx_FSC_PERM 193 194 /* Hyp Prefetch Fault Address Register (HPFAR/HDFAR) */ 195 #define HPFAR_MASK (~UL(0xf)) 196 197 #endif /* __ARM64_KVM_ARM_H__ */ 198