1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Macros for accessing system registers with older binutils.
5 * Copyright (C) 2014 ARM Ltd.
6 * Author: Catalin Marinas <catalin.marinas@arm.com>
10 #define __ASM_SYSREG_H
12 #include <linux/bits.h>
13 #include <linux/stringify.h>
14 #include <linux/kasan-tags.h>
16 #include <asm/gpr-num.h>
19 * ARMv8 ARM reserves the following encoding for system registers:
20 * (Ref: ARMv8 ARM, Section: "System instruction class encoding overview",
21 * C5.2, version:ARM DDI 0487A.f)
39 #define sys_reg(op0, op1, crn, crm, op2) \
40 (((op0) << Op0_shift) | ((op1) << Op1_shift) | \
41 ((crn) << CRn_shift) | ((crm) << CRm_shift) | \
44 #define sys_insn sys_reg
46 #define sys_reg_Op0(id) (((id) >> Op0_shift) & Op0_mask)
47 #define sys_reg_Op1(id) (((id) >> Op1_shift) & Op1_mask)
48 #define sys_reg_CRn(id) (((id) >> CRn_shift) & CRn_mask)
49 #define sys_reg_CRm(id) (((id) >> CRm_shift) & CRm_mask)
50 #define sys_reg_Op2(id) (((id) >> Op2_shift) & Op2_mask)
52 #ifndef CONFIG_BROKEN_GAS_INST
55 // The space separator is omitted so that __emit_inst(x) can be parsed as
56 // either an assembler directive or an assembler macro argument.
57 #define __emit_inst(x) .inst(x)
59 #define __emit_inst(x) ".inst " __stringify((x)) "\n\t"
62 #else /* CONFIG_BROKEN_GAS_INST */
64 #ifndef CONFIG_CPU_BIG_ENDIAN
65 #define __INSTR_BSWAP(x) (x)
66 #else /* CONFIG_CPU_BIG_ENDIAN */
67 #define __INSTR_BSWAP(x) ((((x) << 24) & 0xff000000) | \
68 (((x) << 8) & 0x00ff0000) | \
69 (((x) >> 8) & 0x0000ff00) | \
70 (((x) >> 24) & 0x000000ff))
71 #endif /* CONFIG_CPU_BIG_ENDIAN */
74 #define __emit_inst(x) .long __INSTR_BSWAP(x)
75 #else /* __ASSEMBLY__ */
76 #define __emit_inst(x) ".long " __stringify(__INSTR_BSWAP(x)) "\n\t"
77 #endif /* __ASSEMBLY__ */
79 #endif /* CONFIG_BROKEN_GAS_INST */
82 * Instructions for modifying PSTATE fields.
83 * As per Arm ARM for v8-A, Section "C.5.1.3 op0 == 0b00, architectural hints,
84 * barriers and CLREX, and PSTATE access", ARM DDI 0487 C.a, system instructions
85 * for accessing PSTATE fields have the following encoding:
87 * Op1, Op2 encodes the PSTATE field modified and defines the constraints.
88 * CRm = Imm4 for the instruction.
91 #define pstate_field(op1, op2) ((op1) << Op1_shift | (op2) << Op2_shift)
92 #define PSTATE_Imm_shift CRm_shift
93 #define SET_PSTATE(x, r) __emit_inst(0xd500401f | PSTATE_ ## r | ((!!x) << PSTATE_Imm_shift))
95 #define PSTATE_PAN pstate_field(0, 4)
96 #define PSTATE_UAO pstate_field(0, 3)
97 #define PSTATE_SSBS pstate_field(3, 1)
98 #define PSTATE_DIT pstate_field(3, 2)
99 #define PSTATE_TCO pstate_field(3, 4)
101 #define SET_PSTATE_PAN(x) SET_PSTATE((x), PAN)
102 #define SET_PSTATE_UAO(x) SET_PSTATE((x), UAO)
103 #define SET_PSTATE_SSBS(x) SET_PSTATE((x), SSBS)
104 #define SET_PSTATE_DIT(x) SET_PSTATE((x), DIT)
105 #define SET_PSTATE_TCO(x) SET_PSTATE((x), TCO)
107 #define set_pstate_pan(x) asm volatile(SET_PSTATE_PAN(x))
108 #define set_pstate_uao(x) asm volatile(SET_PSTATE_UAO(x))
109 #define set_pstate_ssbs(x) asm volatile(SET_PSTATE_SSBS(x))
110 #define set_pstate_dit(x) asm volatile(SET_PSTATE_DIT(x))
112 #define __SYS_BARRIER_INSN(CRm, op2, Rt) \
113 __emit_inst(0xd5000000 | sys_insn(0, 3, 3, (CRm), (op2)) | ((Rt) & 0x1f))
115 #define SB_BARRIER_INSN __SYS_BARRIER_INSN(0, 7, 31)
117 #define SYS_DC_ISW sys_insn(1, 0, 7, 6, 2)
118 #define SYS_DC_CSW sys_insn(1, 0, 7, 10, 2)
119 #define SYS_DC_CISW sys_insn(1, 0, 7, 14, 2)
122 * Automatically generated definitions for system registers, the
123 * manual encodings below are in the process of being converted to
124 * come from here. The header relies on the definition of sys_reg()
125 * earlier in this file.
127 #include "asm/sysreg-defs.h"
130 * System registers, organised loosely by encoding but grouped together
131 * where the architected name contains an index. e.g. ID_MMFR<n>_EL1.
133 #define SYS_SVCR_SMSTOP_SM_EL0 sys_reg(0, 3, 4, 2, 3)
134 #define SYS_SVCR_SMSTART_SM_EL0 sys_reg(0, 3, 4, 3, 3)
135 #define SYS_SVCR_SMSTOP_SMZA_EL0 sys_reg(0, 3, 4, 6, 3)
137 #define SYS_OSDTRRX_EL1 sys_reg(2, 0, 0, 0, 2)
138 #define SYS_MDCCINT_EL1 sys_reg(2, 0, 0, 2, 0)
139 #define SYS_MDSCR_EL1 sys_reg(2, 0, 0, 2, 2)
140 #define SYS_OSDTRTX_EL1 sys_reg(2, 0, 0, 3, 2)
141 #define SYS_OSECCR_EL1 sys_reg(2, 0, 0, 6, 2)
142 #define SYS_DBGBVRn_EL1(n) sys_reg(2, 0, 0, n, 4)
143 #define SYS_DBGBCRn_EL1(n) sys_reg(2, 0, 0, n, 5)
144 #define SYS_DBGWVRn_EL1(n) sys_reg(2, 0, 0, n, 6)
145 #define SYS_DBGWCRn_EL1(n) sys_reg(2, 0, 0, n, 7)
146 #define SYS_MDRAR_EL1 sys_reg(2, 0, 1, 0, 0)
148 #define SYS_OSLAR_EL1 sys_reg(2, 0, 1, 0, 4)
149 #define SYS_OSLAR_OSLK BIT(0)
151 #define SYS_OSLSR_EL1 sys_reg(2, 0, 1, 1, 4)
152 #define SYS_OSLSR_OSLM_MASK (BIT(3) | BIT(0))
153 #define SYS_OSLSR_OSLM_NI 0
154 #define SYS_OSLSR_OSLM_IMPLEMENTED BIT(3)
155 #define SYS_OSLSR_OSLK BIT(1)
157 #define SYS_OSDLR_EL1 sys_reg(2, 0, 1, 3, 4)
158 #define SYS_DBGPRCR_EL1 sys_reg(2, 0, 1, 4, 4)
159 #define SYS_DBGCLAIMSET_EL1 sys_reg(2, 0, 7, 8, 6)
160 #define SYS_DBGCLAIMCLR_EL1 sys_reg(2, 0, 7, 9, 6)
161 #define SYS_DBGAUTHSTATUS_EL1 sys_reg(2, 0, 7, 14, 6)
162 #define SYS_MDCCSR_EL0 sys_reg(2, 3, 0, 1, 0)
163 #define SYS_DBGDTR_EL0 sys_reg(2, 3, 0, 4, 0)
164 #define SYS_DBGDTRRX_EL0 sys_reg(2, 3, 0, 5, 0)
165 #define SYS_DBGDTRTX_EL0 sys_reg(2, 3, 0, 5, 0)
166 #define SYS_DBGVCR32_EL2 sys_reg(2, 4, 0, 7, 0)
168 #define SYS_MIDR_EL1 sys_reg(3, 0, 0, 0, 0)
169 #define SYS_MPIDR_EL1 sys_reg(3, 0, 0, 0, 5)
170 #define SYS_REVIDR_EL1 sys_reg(3, 0, 0, 0, 6)
172 #define SYS_ACTLR_EL1 sys_reg(3, 0, 1, 0, 1)
173 #define SYS_RGSR_EL1 sys_reg(3, 0, 1, 0, 5)
174 #define SYS_GCR_EL1 sys_reg(3, 0, 1, 0, 6)
176 #define SYS_TRFCR_EL1 sys_reg(3, 0, 1, 2, 1)
178 #define SYS_TCR_EL1 sys_reg(3, 0, 2, 0, 2)
180 #define SYS_APIAKEYLO_EL1 sys_reg(3, 0, 2, 1, 0)
181 #define SYS_APIAKEYHI_EL1 sys_reg(3, 0, 2, 1, 1)
182 #define SYS_APIBKEYLO_EL1 sys_reg(3, 0, 2, 1, 2)
183 #define SYS_APIBKEYHI_EL1 sys_reg(3, 0, 2, 1, 3)
185 #define SYS_APDAKEYLO_EL1 sys_reg(3, 0, 2, 2, 0)
186 #define SYS_APDAKEYHI_EL1 sys_reg(3, 0, 2, 2, 1)
187 #define SYS_APDBKEYLO_EL1 sys_reg(3, 0, 2, 2, 2)
188 #define SYS_APDBKEYHI_EL1 sys_reg(3, 0, 2, 2, 3)
190 #define SYS_APGAKEYLO_EL1 sys_reg(3, 0, 2, 3, 0)
191 #define SYS_APGAKEYHI_EL1 sys_reg(3, 0, 2, 3, 1)
193 #define SYS_SPSR_EL1 sys_reg(3, 0, 4, 0, 0)
194 #define SYS_ELR_EL1 sys_reg(3, 0, 4, 0, 1)
196 #define SYS_ICC_PMR_EL1 sys_reg(3, 0, 4, 6, 0)
198 #define SYS_AFSR0_EL1 sys_reg(3, 0, 5, 1, 0)
199 #define SYS_AFSR1_EL1 sys_reg(3, 0, 5, 1, 1)
200 #define SYS_ESR_EL1 sys_reg(3, 0, 5, 2, 0)
202 #define SYS_ERRIDR_EL1 sys_reg(3, 0, 5, 3, 0)
203 #define SYS_ERRSELR_EL1 sys_reg(3, 0, 5, 3, 1)
204 #define SYS_ERXFR_EL1 sys_reg(3, 0, 5, 4, 0)
205 #define SYS_ERXCTLR_EL1 sys_reg(3, 0, 5, 4, 1)
206 #define SYS_ERXSTATUS_EL1 sys_reg(3, 0, 5, 4, 2)
207 #define SYS_ERXADDR_EL1 sys_reg(3, 0, 5, 4, 3)
208 #define SYS_ERXMISC0_EL1 sys_reg(3, 0, 5, 5, 0)
209 #define SYS_ERXMISC1_EL1 sys_reg(3, 0, 5, 5, 1)
210 #define SYS_TFSR_EL1 sys_reg(3, 0, 5, 6, 0)
211 #define SYS_TFSRE0_EL1 sys_reg(3, 0, 5, 6, 1)
213 #define SYS_PAR_EL1 sys_reg(3, 0, 7, 4, 0)
215 #define SYS_PAR_EL1_F BIT(0)
216 #define SYS_PAR_EL1_FST GENMASK(6, 1)
218 /*** Statistical Profiling Extension ***/
219 #define PMSEVFR_EL1_RES0_IMP \
220 (GENMASK_ULL(47, 32) | GENMASK_ULL(23, 16) | GENMASK_ULL(11, 8) |\
221 BIT_ULL(6) | BIT_ULL(4) | BIT_ULL(2) | BIT_ULL(0))
222 #define PMSEVFR_EL1_RES0_V1P1 \
223 (PMSEVFR_EL1_RES0_IMP & ~(BIT_ULL(18) | BIT_ULL(17) | BIT_ULL(11)))
224 #define PMSEVFR_EL1_RES0_V1P2 \
225 (PMSEVFR_EL1_RES0_V1P1 & ~BIT_ULL(6))
227 /* Buffer error reporting */
228 #define PMBSR_EL1_FAULT_FSC_SHIFT PMBSR_EL1_MSS_SHIFT
229 #define PMBSR_EL1_FAULT_FSC_MASK PMBSR_EL1_MSS_MASK
231 #define PMBSR_EL1_BUF_BSC_SHIFT PMBSR_EL1_MSS_SHIFT
232 #define PMBSR_EL1_BUF_BSC_MASK PMBSR_EL1_MSS_MASK
234 #define PMBSR_EL1_BUF_BSC_FULL 0x1UL
236 /*** End of Statistical Profiling Extension ***/
241 #define SYS_TRBLIMITR_EL1 sys_reg(3, 0, 9, 11, 0)
242 #define SYS_TRBPTR_EL1 sys_reg(3, 0, 9, 11, 1)
243 #define SYS_TRBBASER_EL1 sys_reg(3, 0, 9, 11, 2)
244 #define SYS_TRBSR_EL1 sys_reg(3, 0, 9, 11, 3)
245 #define SYS_TRBMAR_EL1 sys_reg(3, 0, 9, 11, 4)
246 #define SYS_TRBTRG_EL1 sys_reg(3, 0, 9, 11, 6)
247 #define SYS_TRBIDR_EL1 sys_reg(3, 0, 9, 11, 7)
249 #define TRBLIMITR_LIMIT_MASK GENMASK_ULL(51, 0)
250 #define TRBLIMITR_LIMIT_SHIFT 12
251 #define TRBLIMITR_NVM BIT(5)
252 #define TRBLIMITR_TRIG_MODE_MASK GENMASK(1, 0)
253 #define TRBLIMITR_TRIG_MODE_SHIFT 3
254 #define TRBLIMITR_FILL_MODE_MASK GENMASK(1, 0)
255 #define TRBLIMITR_FILL_MODE_SHIFT 1
256 #define TRBLIMITR_ENABLE BIT(0)
257 #define TRBPTR_PTR_MASK GENMASK_ULL(63, 0)
258 #define TRBPTR_PTR_SHIFT 0
259 #define TRBBASER_BASE_MASK GENMASK_ULL(51, 0)
260 #define TRBBASER_BASE_SHIFT 12
261 #define TRBSR_EC_MASK GENMASK(5, 0)
262 #define TRBSR_EC_SHIFT 26
263 #define TRBSR_IRQ BIT(22)
264 #define TRBSR_TRG BIT(21)
265 #define TRBSR_WRAP BIT(20)
266 #define TRBSR_ABORT BIT(18)
267 #define TRBSR_STOP BIT(17)
268 #define TRBSR_MSS_MASK GENMASK(15, 0)
269 #define TRBSR_MSS_SHIFT 0
270 #define TRBSR_BSC_MASK GENMASK(5, 0)
271 #define TRBSR_BSC_SHIFT 0
272 #define TRBSR_FSC_MASK GENMASK(5, 0)
273 #define TRBSR_FSC_SHIFT 0
274 #define TRBMAR_SHARE_MASK GENMASK(1, 0)
275 #define TRBMAR_SHARE_SHIFT 8
276 #define TRBMAR_OUTER_MASK GENMASK(3, 0)
277 #define TRBMAR_OUTER_SHIFT 4
278 #define TRBMAR_INNER_MASK GENMASK(3, 0)
279 #define TRBMAR_INNER_SHIFT 0
280 #define TRBTRG_TRG_MASK GENMASK(31, 0)
281 #define TRBTRG_TRG_SHIFT 0
282 #define TRBIDR_FLAG BIT(5)
283 #define TRBIDR_PROG BIT(4)
284 #define TRBIDR_ALIGN_MASK GENMASK(3, 0)
285 #define TRBIDR_ALIGN_SHIFT 0
287 #define SYS_PMINTENSET_EL1 sys_reg(3, 0, 9, 14, 1)
288 #define SYS_PMINTENCLR_EL1 sys_reg(3, 0, 9, 14, 2)
290 #define SYS_PMMIR_EL1 sys_reg(3, 0, 9, 14, 6)
292 #define SYS_MAIR_EL1 sys_reg(3, 0, 10, 2, 0)
293 #define SYS_AMAIR_EL1 sys_reg(3, 0, 10, 3, 0)
295 #define SYS_VBAR_EL1 sys_reg(3, 0, 12, 0, 0)
296 #define SYS_DISR_EL1 sys_reg(3, 0, 12, 1, 1)
298 #define SYS_ICC_IAR0_EL1 sys_reg(3, 0, 12, 8, 0)
299 #define SYS_ICC_EOIR0_EL1 sys_reg(3, 0, 12, 8, 1)
300 #define SYS_ICC_HPPIR0_EL1 sys_reg(3, 0, 12, 8, 2)
301 #define SYS_ICC_BPR0_EL1 sys_reg(3, 0, 12, 8, 3)
302 #define SYS_ICC_AP0Rn_EL1(n) sys_reg(3, 0, 12, 8, 4 | n)
303 #define SYS_ICC_AP0R0_EL1 SYS_ICC_AP0Rn_EL1(0)
304 #define SYS_ICC_AP0R1_EL1 SYS_ICC_AP0Rn_EL1(1)
305 #define SYS_ICC_AP0R2_EL1 SYS_ICC_AP0Rn_EL1(2)
306 #define SYS_ICC_AP0R3_EL1 SYS_ICC_AP0Rn_EL1(3)
307 #define SYS_ICC_AP1Rn_EL1(n) sys_reg(3, 0, 12, 9, n)
308 #define SYS_ICC_AP1R0_EL1 SYS_ICC_AP1Rn_EL1(0)
309 #define SYS_ICC_AP1R1_EL1 SYS_ICC_AP1Rn_EL1(1)
310 #define SYS_ICC_AP1R2_EL1 SYS_ICC_AP1Rn_EL1(2)
311 #define SYS_ICC_AP1R3_EL1 SYS_ICC_AP1Rn_EL1(3)
312 #define SYS_ICC_DIR_EL1 sys_reg(3, 0, 12, 11, 1)
313 #define SYS_ICC_RPR_EL1 sys_reg(3, 0, 12, 11, 3)
314 #define SYS_ICC_SGI1R_EL1 sys_reg(3, 0, 12, 11, 5)
315 #define SYS_ICC_ASGI1R_EL1 sys_reg(3, 0, 12, 11, 6)
316 #define SYS_ICC_SGI0R_EL1 sys_reg(3, 0, 12, 11, 7)
317 #define SYS_ICC_IAR1_EL1 sys_reg(3, 0, 12, 12, 0)
318 #define SYS_ICC_EOIR1_EL1 sys_reg(3, 0, 12, 12, 1)
319 #define SYS_ICC_HPPIR1_EL1 sys_reg(3, 0, 12, 12, 2)
320 #define SYS_ICC_BPR1_EL1 sys_reg(3, 0, 12, 12, 3)
321 #define SYS_ICC_CTLR_EL1 sys_reg(3, 0, 12, 12, 4)
322 #define SYS_ICC_SRE_EL1 sys_reg(3, 0, 12, 12, 5)
323 #define SYS_ICC_IGRPEN0_EL1 sys_reg(3, 0, 12, 12, 6)
324 #define SYS_ICC_IGRPEN1_EL1 sys_reg(3, 0, 12, 12, 7)
326 #define SYS_CNTKCTL_EL1 sys_reg(3, 0, 14, 1, 0)
328 #define SYS_AIDR_EL1 sys_reg(3, 1, 0, 0, 7)
330 #define SYS_RNDR_EL0 sys_reg(3, 3, 2, 4, 0)
331 #define SYS_RNDRRS_EL0 sys_reg(3, 3, 2, 4, 1)
333 #define SYS_PMCR_EL0 sys_reg(3, 3, 9, 12, 0)
334 #define SYS_PMCNTENSET_EL0 sys_reg(3, 3, 9, 12, 1)
335 #define SYS_PMCNTENCLR_EL0 sys_reg(3, 3, 9, 12, 2)
336 #define SYS_PMOVSCLR_EL0 sys_reg(3, 3, 9, 12, 3)
337 #define SYS_PMSWINC_EL0 sys_reg(3, 3, 9, 12, 4)
338 #define SYS_PMSELR_EL0 sys_reg(3, 3, 9, 12, 5)
339 #define SYS_PMCEID0_EL0 sys_reg(3, 3, 9, 12, 6)
340 #define SYS_PMCEID1_EL0 sys_reg(3, 3, 9, 12, 7)
341 #define SYS_PMCCNTR_EL0 sys_reg(3, 3, 9, 13, 0)
342 #define SYS_PMXEVTYPER_EL0 sys_reg(3, 3, 9, 13, 1)
343 #define SYS_PMXEVCNTR_EL0 sys_reg(3, 3, 9, 13, 2)
344 #define SYS_PMUSERENR_EL0 sys_reg(3, 3, 9, 14, 0)
345 #define SYS_PMOVSSET_EL0 sys_reg(3, 3, 9, 14, 3)
347 #define SYS_TPIDR_EL0 sys_reg(3, 3, 13, 0, 2)
348 #define SYS_TPIDRRO_EL0 sys_reg(3, 3, 13, 0, 3)
349 #define SYS_TPIDR2_EL0 sys_reg(3, 3, 13, 0, 5)
351 #define SYS_SCXTNUM_EL0 sys_reg(3, 3, 13, 0, 7)
353 /* Definitions for system register interface to AMU for ARMv8.4 onwards */
354 #define SYS_AM_EL0(crm, op2) sys_reg(3, 3, 13, (crm), (op2))
355 #define SYS_AMCR_EL0 SYS_AM_EL0(2, 0)
356 #define SYS_AMCFGR_EL0 SYS_AM_EL0(2, 1)
357 #define SYS_AMCGCR_EL0 SYS_AM_EL0(2, 2)
358 #define SYS_AMUSERENR_EL0 SYS_AM_EL0(2, 3)
359 #define SYS_AMCNTENCLR0_EL0 SYS_AM_EL0(2, 4)
360 #define SYS_AMCNTENSET0_EL0 SYS_AM_EL0(2, 5)
361 #define SYS_AMCNTENCLR1_EL0 SYS_AM_EL0(3, 0)
362 #define SYS_AMCNTENSET1_EL0 SYS_AM_EL0(3, 1)
365 * Group 0 of activity monitors (architected):
366 * op0 op1 CRn CRm op2
367 * Counter: 11 011 1101 010:n<3> n<2:0>
368 * Type: 11 011 1101 011:n<3> n<2:0>
371 * Group 1 of activity monitors (auxiliary):
372 * op0 op1 CRn CRm op2
373 * Counter: 11 011 1101 110:n<3> n<2:0>
374 * Type: 11 011 1101 111:n<3> n<2:0>
378 #define SYS_AMEVCNTR0_EL0(n) SYS_AM_EL0(4 + ((n) >> 3), (n) & 7)
379 #define SYS_AMEVTYPER0_EL0(n) SYS_AM_EL0(6 + ((n) >> 3), (n) & 7)
380 #define SYS_AMEVCNTR1_EL0(n) SYS_AM_EL0(12 + ((n) >> 3), (n) & 7)
381 #define SYS_AMEVTYPER1_EL0(n) SYS_AM_EL0(14 + ((n) >> 3), (n) & 7)
383 /* AMU v1: Fixed (architecturally defined) activity monitors */
384 #define SYS_AMEVCNTR0_CORE_EL0 SYS_AMEVCNTR0_EL0(0)
385 #define SYS_AMEVCNTR0_CONST_EL0 SYS_AMEVCNTR0_EL0(1)
386 #define SYS_AMEVCNTR0_INST_RET_EL0 SYS_AMEVCNTR0_EL0(2)
387 #define SYS_AMEVCNTR0_MEM_STALL SYS_AMEVCNTR0_EL0(3)
389 #define SYS_CNTFRQ_EL0 sys_reg(3, 3, 14, 0, 0)
391 #define SYS_CNTPCT_EL0 sys_reg(3, 3, 14, 0, 1)
392 #define SYS_CNTPCTSS_EL0 sys_reg(3, 3, 14, 0, 5)
393 #define SYS_CNTVCTSS_EL0 sys_reg(3, 3, 14, 0, 6)
395 #define SYS_CNTP_TVAL_EL0 sys_reg(3, 3, 14, 2, 0)
396 #define SYS_CNTP_CTL_EL0 sys_reg(3, 3, 14, 2, 1)
397 #define SYS_CNTP_CVAL_EL0 sys_reg(3, 3, 14, 2, 2)
399 #define SYS_CNTV_CTL_EL0 sys_reg(3, 3, 14, 3, 1)
400 #define SYS_CNTV_CVAL_EL0 sys_reg(3, 3, 14, 3, 2)
402 #define SYS_AARCH32_CNTP_TVAL sys_reg(0, 0, 14, 2, 0)
403 #define SYS_AARCH32_CNTP_CTL sys_reg(0, 0, 14, 2, 1)
404 #define SYS_AARCH32_CNTPCT sys_reg(0, 0, 0, 14, 0)
405 #define SYS_AARCH32_CNTP_CVAL sys_reg(0, 2, 0, 14, 0)
406 #define SYS_AARCH32_CNTPCTSS sys_reg(0, 8, 0, 14, 0)
408 #define __PMEV_op2(n) ((n) & 0x7)
409 #define __CNTR_CRm(n) (0x8 | (((n) >> 3) & 0x3))
410 #define SYS_PMEVCNTRn_EL0(n) sys_reg(3, 3, 14, __CNTR_CRm(n), __PMEV_op2(n))
411 #define __TYPER_CRm(n) (0xc | (((n) >> 3) & 0x3))
412 #define SYS_PMEVTYPERn_EL0(n) sys_reg(3, 3, 14, __TYPER_CRm(n), __PMEV_op2(n))
414 #define SYS_PMCCFILTR_EL0 sys_reg(3, 3, 14, 15, 7)
416 #define SYS_VPIDR_EL2 sys_reg(3, 4, 0, 0, 0)
417 #define SYS_VMPIDR_EL2 sys_reg(3, 4, 0, 0, 5)
419 #define SYS_SCTLR_EL2 sys_reg(3, 4, 1, 0, 0)
420 #define SYS_ACTLR_EL2 sys_reg(3, 4, 1, 0, 1)
421 #define SYS_HCR_EL2 sys_reg(3, 4, 1, 1, 0)
422 #define SYS_MDCR_EL2 sys_reg(3, 4, 1, 1, 1)
423 #define SYS_CPTR_EL2 sys_reg(3, 4, 1, 1, 2)
424 #define SYS_HSTR_EL2 sys_reg(3, 4, 1, 1, 3)
425 #define SYS_HACR_EL2 sys_reg(3, 4, 1, 1, 7)
427 #define SYS_TTBR0_EL2 sys_reg(3, 4, 2, 0, 0)
428 #define SYS_TTBR1_EL2 sys_reg(3, 4, 2, 0, 1)
429 #define SYS_TCR_EL2 sys_reg(3, 4, 2, 0, 2)
430 #define SYS_VTTBR_EL2 sys_reg(3, 4, 2, 1, 0)
431 #define SYS_VTCR_EL2 sys_reg(3, 4, 2, 1, 2)
433 #define SYS_TRFCR_EL2 sys_reg(3, 4, 1, 2, 1)
434 #define SYS_HDFGRTR_EL2 sys_reg(3, 4, 3, 1, 4)
435 #define SYS_HDFGWTR_EL2 sys_reg(3, 4, 3, 1, 5)
436 #define SYS_HAFGRTR_EL2 sys_reg(3, 4, 3, 1, 6)
437 #define SYS_SPSR_EL2 sys_reg(3, 4, 4, 0, 0)
438 #define SYS_ELR_EL2 sys_reg(3, 4, 4, 0, 1)
439 #define SYS_SP_EL1 sys_reg(3, 4, 4, 1, 0)
440 #define SYS_IFSR32_EL2 sys_reg(3, 4, 5, 0, 1)
441 #define SYS_AFSR0_EL2 sys_reg(3, 4, 5, 1, 0)
442 #define SYS_AFSR1_EL2 sys_reg(3, 4, 5, 1, 1)
443 #define SYS_ESR_EL2 sys_reg(3, 4, 5, 2, 0)
444 #define SYS_VSESR_EL2 sys_reg(3, 4, 5, 2, 3)
445 #define SYS_FPEXC32_EL2 sys_reg(3, 4, 5, 3, 0)
446 #define SYS_TFSR_EL2 sys_reg(3, 4, 5, 6, 0)
448 #define SYS_FAR_EL2 sys_reg(3, 4, 6, 0, 0)
449 #define SYS_HPFAR_EL2 sys_reg(3, 4, 6, 0, 4)
451 #define SYS_MAIR_EL2 sys_reg(3, 4, 10, 2, 0)
452 #define SYS_AMAIR_EL2 sys_reg(3, 4, 10, 3, 0)
454 #define SYS_VBAR_EL2 sys_reg(3, 4, 12, 0, 0)
455 #define SYS_RVBAR_EL2 sys_reg(3, 4, 12, 0, 1)
456 #define SYS_RMR_EL2 sys_reg(3, 4, 12, 0, 2)
457 #define SYS_VDISR_EL2 sys_reg(3, 4, 12, 1, 1)
458 #define __SYS__AP0Rx_EL2(x) sys_reg(3, 4, 12, 8, x)
459 #define SYS_ICH_AP0R0_EL2 __SYS__AP0Rx_EL2(0)
460 #define SYS_ICH_AP0R1_EL2 __SYS__AP0Rx_EL2(1)
461 #define SYS_ICH_AP0R2_EL2 __SYS__AP0Rx_EL2(2)
462 #define SYS_ICH_AP0R3_EL2 __SYS__AP0Rx_EL2(3)
464 #define __SYS__AP1Rx_EL2(x) sys_reg(3, 4, 12, 9, x)
465 #define SYS_ICH_AP1R0_EL2 __SYS__AP1Rx_EL2(0)
466 #define SYS_ICH_AP1R1_EL2 __SYS__AP1Rx_EL2(1)
467 #define SYS_ICH_AP1R2_EL2 __SYS__AP1Rx_EL2(2)
468 #define SYS_ICH_AP1R3_EL2 __SYS__AP1Rx_EL2(3)
470 #define SYS_ICH_VSEIR_EL2 sys_reg(3, 4, 12, 9, 4)
471 #define SYS_ICC_SRE_EL2 sys_reg(3, 4, 12, 9, 5)
472 #define SYS_ICH_HCR_EL2 sys_reg(3, 4, 12, 11, 0)
473 #define SYS_ICH_VTR_EL2 sys_reg(3, 4, 12, 11, 1)
474 #define SYS_ICH_MISR_EL2 sys_reg(3, 4, 12, 11, 2)
475 #define SYS_ICH_EISR_EL2 sys_reg(3, 4, 12, 11, 3)
476 #define SYS_ICH_ELRSR_EL2 sys_reg(3, 4, 12, 11, 5)
477 #define SYS_ICH_VMCR_EL2 sys_reg(3, 4, 12, 11, 7)
479 #define __SYS__LR0_EL2(x) sys_reg(3, 4, 12, 12, x)
480 #define SYS_ICH_LR0_EL2 __SYS__LR0_EL2(0)
481 #define SYS_ICH_LR1_EL2 __SYS__LR0_EL2(1)
482 #define SYS_ICH_LR2_EL2 __SYS__LR0_EL2(2)
483 #define SYS_ICH_LR3_EL2 __SYS__LR0_EL2(3)
484 #define SYS_ICH_LR4_EL2 __SYS__LR0_EL2(4)
485 #define SYS_ICH_LR5_EL2 __SYS__LR0_EL2(5)
486 #define SYS_ICH_LR6_EL2 __SYS__LR0_EL2(6)
487 #define SYS_ICH_LR7_EL2 __SYS__LR0_EL2(7)
489 #define __SYS__LR8_EL2(x) sys_reg(3, 4, 12, 13, x)
490 #define SYS_ICH_LR8_EL2 __SYS__LR8_EL2(0)
491 #define SYS_ICH_LR9_EL2 __SYS__LR8_EL2(1)
492 #define SYS_ICH_LR10_EL2 __SYS__LR8_EL2(2)
493 #define SYS_ICH_LR11_EL2 __SYS__LR8_EL2(3)
494 #define SYS_ICH_LR12_EL2 __SYS__LR8_EL2(4)
495 #define SYS_ICH_LR13_EL2 __SYS__LR8_EL2(5)
496 #define SYS_ICH_LR14_EL2 __SYS__LR8_EL2(6)
497 #define SYS_ICH_LR15_EL2 __SYS__LR8_EL2(7)
499 #define SYS_CONTEXTIDR_EL2 sys_reg(3, 4, 13, 0, 1)
500 #define SYS_TPIDR_EL2 sys_reg(3, 4, 13, 0, 2)
502 #define SYS_CNTVOFF_EL2 sys_reg(3, 4, 14, 0, 3)
503 #define SYS_CNTHCTL_EL2 sys_reg(3, 4, 14, 1, 0)
505 /* VHE encodings for architectural EL0/1 system registers */
506 #define SYS_SCTLR_EL12 sys_reg(3, 5, 1, 0, 0)
507 #define SYS_TTBR0_EL12 sys_reg(3, 5, 2, 0, 0)
508 #define SYS_TTBR1_EL12 sys_reg(3, 5, 2, 0, 1)
509 #define SYS_TCR_EL12 sys_reg(3, 5, 2, 0, 2)
510 #define SYS_SPSR_EL12 sys_reg(3, 5, 4, 0, 0)
511 #define SYS_ELR_EL12 sys_reg(3, 5, 4, 0, 1)
512 #define SYS_AFSR0_EL12 sys_reg(3, 5, 5, 1, 0)
513 #define SYS_AFSR1_EL12 sys_reg(3, 5, 5, 1, 1)
514 #define SYS_ESR_EL12 sys_reg(3, 5, 5, 2, 0)
515 #define SYS_TFSR_EL12 sys_reg(3, 5, 5, 6, 0)
516 #define SYS_MAIR_EL12 sys_reg(3, 5, 10, 2, 0)
517 #define SYS_AMAIR_EL12 sys_reg(3, 5, 10, 3, 0)
518 #define SYS_VBAR_EL12 sys_reg(3, 5, 12, 0, 0)
519 #define SYS_CNTKCTL_EL12 sys_reg(3, 5, 14, 1, 0)
520 #define SYS_CNTP_TVAL_EL02 sys_reg(3, 5, 14, 2, 0)
521 #define SYS_CNTP_CTL_EL02 sys_reg(3, 5, 14, 2, 1)
522 #define SYS_CNTP_CVAL_EL02 sys_reg(3, 5, 14, 2, 2)
523 #define SYS_CNTV_TVAL_EL02 sys_reg(3, 5, 14, 3, 0)
524 #define SYS_CNTV_CTL_EL02 sys_reg(3, 5, 14, 3, 1)
525 #define SYS_CNTV_CVAL_EL02 sys_reg(3, 5, 14, 3, 2)
527 #define SYS_SP_EL2 sys_reg(3, 6, 4, 1, 0)
529 /* Common SCTLR_ELx flags. */
530 #define SCTLR_ELx_ENTP2 (BIT(60))
531 #define SCTLR_ELx_DSSBS (BIT(44))
532 #define SCTLR_ELx_ATA (BIT(43))
534 #define SCTLR_ELx_EE_SHIFT 25
535 #define SCTLR_ELx_ENIA_SHIFT 31
537 #define SCTLR_ELx_ITFSB (BIT(37))
538 #define SCTLR_ELx_ENIA (BIT(SCTLR_ELx_ENIA_SHIFT))
539 #define SCTLR_ELx_ENIB (BIT(30))
540 #define SCTLR_ELx_LSMAOE (BIT(29))
541 #define SCTLR_ELx_nTLSMD (BIT(28))
542 #define SCTLR_ELx_ENDA (BIT(27))
543 #define SCTLR_ELx_EE (BIT(SCTLR_ELx_EE_SHIFT))
544 #define SCTLR_ELx_EIS (BIT(22))
545 #define SCTLR_ELx_IESB (BIT(21))
546 #define SCTLR_ELx_TSCXT (BIT(20))
547 #define SCTLR_ELx_WXN (BIT(19))
548 #define SCTLR_ELx_ENDB (BIT(13))
549 #define SCTLR_ELx_I (BIT(12))
550 #define SCTLR_ELx_EOS (BIT(11))
551 #define SCTLR_ELx_SA (BIT(3))
552 #define SCTLR_ELx_C (BIT(2))
553 #define SCTLR_ELx_A (BIT(1))
554 #define SCTLR_ELx_M (BIT(0))
556 /* SCTLR_EL2 specific flags. */
557 #define SCTLR_EL2_RES1 ((BIT(4)) | (BIT(5)) | (BIT(11)) | (BIT(16)) | \
558 (BIT(18)) | (BIT(22)) | (BIT(23)) | (BIT(28)) | \
561 #ifdef CONFIG_CPU_BIG_ENDIAN
562 #define ENDIAN_SET_EL2 SCTLR_ELx_EE
564 #define ENDIAN_SET_EL2 0
567 #define INIT_SCTLR_EL2_MMU_ON \
568 (SCTLR_ELx_M | SCTLR_ELx_C | SCTLR_ELx_SA | SCTLR_ELx_I | \
569 SCTLR_ELx_IESB | SCTLR_ELx_WXN | ENDIAN_SET_EL2 | \
570 SCTLR_ELx_ITFSB | SCTLR_EL2_RES1)
572 #define INIT_SCTLR_EL2_MMU_OFF \
573 (SCTLR_EL2_RES1 | ENDIAN_SET_EL2)
575 /* SCTLR_EL1 specific flags. */
576 #ifdef CONFIG_CPU_BIG_ENDIAN
577 #define ENDIAN_SET_EL1 (SCTLR_EL1_E0E | SCTLR_ELx_EE)
579 #define ENDIAN_SET_EL1 0
582 #define INIT_SCTLR_EL1_MMU_OFF \
583 (ENDIAN_SET_EL1 | SCTLR_EL1_LSMAOE | SCTLR_EL1_nTLSMD | \
584 SCTLR_EL1_EIS | SCTLR_EL1_TSCXT | SCTLR_EL1_EOS)
586 #define INIT_SCTLR_EL1_MMU_ON \
587 (SCTLR_ELx_M | SCTLR_ELx_C | SCTLR_ELx_SA | \
588 SCTLR_EL1_SA0 | SCTLR_EL1_SED | SCTLR_ELx_I | \
589 SCTLR_EL1_DZE | SCTLR_EL1_UCT | SCTLR_EL1_nTWE | \
590 SCTLR_ELx_IESB | SCTLR_EL1_SPAN | SCTLR_ELx_ITFSB | \
591 ENDIAN_SET_EL1 | SCTLR_EL1_UCI | SCTLR_EL1_EPAN | \
592 SCTLR_EL1_LSMAOE | SCTLR_EL1_nTLSMD | SCTLR_EL1_EIS | \
593 SCTLR_EL1_TSCXT | SCTLR_EL1_EOS)
595 /* MAIR_ELx memory attributes (used by Linux) */
596 #define MAIR_ATTR_DEVICE_nGnRnE UL(0x00)
597 #define MAIR_ATTR_DEVICE_nGnRE UL(0x04)
598 #define MAIR_ATTR_NORMAL_NC UL(0x44)
599 #define MAIR_ATTR_NORMAL_TAGGED UL(0xf0)
600 #define MAIR_ATTR_NORMAL UL(0xff)
601 #define MAIR_ATTR_MASK UL(0xff)
603 /* Position the attr at the correct index */
604 #define MAIR_ATTRIDX(attr, idx) ((attr) << ((idx) * 8))
607 #define ID_AA64PFR0_EL1_ELx_64BIT_ONLY 0x1
608 #define ID_AA64PFR0_EL1_ELx_32BIT_64BIT 0x2
611 #define ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MIN 0x0
612 #define ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MAX 0x7
613 #define ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MIN 0x0
614 #define ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MAX 0x7
615 #define ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MIN 0x1
616 #define ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MAX 0xf
618 #define ARM64_MIN_PARANGE_BITS 32
620 #define ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_DEFAULT 0x0
621 #define ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_NONE 0x1
622 #define ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_MIN 0x2
623 #define ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_MAX 0x7
625 #ifdef CONFIG_ARM64_PA_BITS_52
626 #define ID_AA64MMFR0_EL1_PARANGE_MAX ID_AA64MMFR0_EL1_PARANGE_52
628 #define ID_AA64MMFR0_EL1_PARANGE_MAX ID_AA64MMFR0_EL1_PARANGE_48
631 #if defined(CONFIG_ARM64_4K_PAGES)
632 #define ID_AA64MMFR0_EL1_TGRAN_SHIFT ID_AA64MMFR0_EL1_TGRAN4_SHIFT
633 #define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MIN
634 #define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MAX
635 #define ID_AA64MMFR0_EL1_TGRAN_2_SHIFT ID_AA64MMFR0_EL1_TGRAN4_2_SHIFT
636 #elif defined(CONFIG_ARM64_16K_PAGES)
637 #define ID_AA64MMFR0_EL1_TGRAN_SHIFT ID_AA64MMFR0_EL1_TGRAN16_SHIFT
638 #define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MIN
639 #define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MAX
640 #define ID_AA64MMFR0_EL1_TGRAN_2_SHIFT ID_AA64MMFR0_EL1_TGRAN16_2_SHIFT
641 #elif defined(CONFIG_ARM64_64K_PAGES)
642 #define ID_AA64MMFR0_EL1_TGRAN_SHIFT ID_AA64MMFR0_EL1_TGRAN64_SHIFT
643 #define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MIN
644 #define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MAX
645 #define ID_AA64MMFR0_EL1_TGRAN_2_SHIFT ID_AA64MMFR0_EL1_TGRAN64_2_SHIFT
648 #define CPACR_EL1_FPEN_EL1EN (BIT(20)) /* enable EL1 access */
649 #define CPACR_EL1_FPEN_EL0EN (BIT(21)) /* enable EL0 access, if EL1EN set */
651 #define CPACR_EL1_SMEN_EL1EN (BIT(24)) /* enable EL1 access */
652 #define CPACR_EL1_SMEN_EL0EN (BIT(25)) /* enable EL0 access, if EL1EN set */
654 #define CPACR_EL1_ZEN_EL1EN (BIT(16)) /* enable EL1 access */
655 #define CPACR_EL1_ZEN_EL0EN (BIT(17)) /* enable EL0 access, if EL1EN set */
657 /* GCR_EL1 Definitions */
658 #define SYS_GCR_EL1_RRND (BIT(16))
659 #define SYS_GCR_EL1_EXCL_MASK 0xffffUL
661 #ifdef CONFIG_KASAN_HW_TAGS
663 * KASAN always uses a whole byte for its tags. With CONFIG_KASAN_HW_TAGS it
664 * only uses tags in the range 0xF0-0xFF, which we map to MTE tags 0x0-0xF.
666 #define __MTE_TAG_MIN (KASAN_TAG_MIN & 0xf)
667 #define __MTE_TAG_MAX (KASAN_TAG_MAX & 0xf)
668 #define __MTE_TAG_INCL GENMASK(__MTE_TAG_MAX, __MTE_TAG_MIN)
669 #define KERNEL_GCR_EL1_EXCL (SYS_GCR_EL1_EXCL_MASK & ~__MTE_TAG_INCL)
671 #define KERNEL_GCR_EL1_EXCL SYS_GCR_EL1_EXCL_MASK
674 #define KERNEL_GCR_EL1 (SYS_GCR_EL1_RRND | KERNEL_GCR_EL1_EXCL)
676 /* RGSR_EL1 Definitions */
677 #define SYS_RGSR_EL1_TAG_MASK 0xfUL
678 #define SYS_RGSR_EL1_SEED_SHIFT 8
679 #define SYS_RGSR_EL1_SEED_MASK 0xffffUL
681 /* TFSR{,E0}_EL1 bit definitions */
682 #define SYS_TFSR_EL1_TF0_SHIFT 0
683 #define SYS_TFSR_EL1_TF1_SHIFT 1
684 #define SYS_TFSR_EL1_TF0 (UL(1) << SYS_TFSR_EL1_TF0_SHIFT)
685 #define SYS_TFSR_EL1_TF1 (UL(1) << SYS_TFSR_EL1_TF1_SHIFT)
687 /* Safe value for MPIDR_EL1: Bit31:RES1, Bit30:U:0, Bit24:MT:0 */
688 #define SYS_MPIDR_SAFE_VAL (BIT(31))
690 #define TRFCR_ELx_TS_SHIFT 5
691 #define TRFCR_ELx_TS_MASK ((0x3UL) << TRFCR_ELx_TS_SHIFT)
692 #define TRFCR_ELx_TS_VIRTUAL ((0x1UL) << TRFCR_ELx_TS_SHIFT)
693 #define TRFCR_ELx_TS_GUEST_PHYSICAL ((0x2UL) << TRFCR_ELx_TS_SHIFT)
694 #define TRFCR_ELx_TS_PHYSICAL ((0x3UL) << TRFCR_ELx_TS_SHIFT)
695 #define TRFCR_EL2_CX BIT(3)
696 #define TRFCR_ELx_ExTRE BIT(1)
697 #define TRFCR_ELx_E0TRE BIT(0)
699 /* GIC Hypervisor interface registers */
700 /* ICH_MISR_EL2 bit definitions */
701 #define ICH_MISR_EOI (1 << 0)
702 #define ICH_MISR_U (1 << 1)
704 /* ICH_LR*_EL2 bit definitions */
705 #define ICH_LR_VIRTUAL_ID_MASK ((1ULL << 32) - 1)
707 #define ICH_LR_EOI (1ULL << 41)
708 #define ICH_LR_GROUP (1ULL << 60)
709 #define ICH_LR_HW (1ULL << 61)
710 #define ICH_LR_STATE (3ULL << 62)
711 #define ICH_LR_PENDING_BIT (1ULL << 62)
712 #define ICH_LR_ACTIVE_BIT (1ULL << 63)
713 #define ICH_LR_PHYS_ID_SHIFT 32
714 #define ICH_LR_PHYS_ID_MASK (0x3ffULL << ICH_LR_PHYS_ID_SHIFT)
715 #define ICH_LR_PRIORITY_SHIFT 48
716 #define ICH_LR_PRIORITY_MASK (0xffULL << ICH_LR_PRIORITY_SHIFT)
718 /* ICH_HCR_EL2 bit definitions */
719 #define ICH_HCR_EN (1 << 0)
720 #define ICH_HCR_UIE (1 << 1)
721 #define ICH_HCR_NPIE (1 << 3)
722 #define ICH_HCR_TC (1 << 10)
723 #define ICH_HCR_TALL0 (1 << 11)
724 #define ICH_HCR_TALL1 (1 << 12)
725 #define ICH_HCR_TDIR (1 << 14)
726 #define ICH_HCR_EOIcount_SHIFT 27
727 #define ICH_HCR_EOIcount_MASK (0x1f << ICH_HCR_EOIcount_SHIFT)
729 /* ICH_VMCR_EL2 bit definitions */
730 #define ICH_VMCR_ACK_CTL_SHIFT 2
731 #define ICH_VMCR_ACK_CTL_MASK (1 << ICH_VMCR_ACK_CTL_SHIFT)
732 #define ICH_VMCR_FIQ_EN_SHIFT 3
733 #define ICH_VMCR_FIQ_EN_MASK (1 << ICH_VMCR_FIQ_EN_SHIFT)
734 #define ICH_VMCR_CBPR_SHIFT 4
735 #define ICH_VMCR_CBPR_MASK (1 << ICH_VMCR_CBPR_SHIFT)
736 #define ICH_VMCR_EOIM_SHIFT 9
737 #define ICH_VMCR_EOIM_MASK (1 << ICH_VMCR_EOIM_SHIFT)
738 #define ICH_VMCR_BPR1_SHIFT 18
739 #define ICH_VMCR_BPR1_MASK (7 << ICH_VMCR_BPR1_SHIFT)
740 #define ICH_VMCR_BPR0_SHIFT 21
741 #define ICH_VMCR_BPR0_MASK (7 << ICH_VMCR_BPR0_SHIFT)
742 #define ICH_VMCR_PMR_SHIFT 24
743 #define ICH_VMCR_PMR_MASK (0xffUL << ICH_VMCR_PMR_SHIFT)
744 #define ICH_VMCR_ENG0_SHIFT 0
745 #define ICH_VMCR_ENG0_MASK (1 << ICH_VMCR_ENG0_SHIFT)
746 #define ICH_VMCR_ENG1_SHIFT 1
747 #define ICH_VMCR_ENG1_MASK (1 << ICH_VMCR_ENG1_SHIFT)
749 /* ICH_VTR_EL2 bit definitions */
750 #define ICH_VTR_PRI_BITS_SHIFT 29
751 #define ICH_VTR_PRI_BITS_MASK (7 << ICH_VTR_PRI_BITS_SHIFT)
752 #define ICH_VTR_ID_BITS_SHIFT 23
753 #define ICH_VTR_ID_BITS_MASK (7 << ICH_VTR_ID_BITS_SHIFT)
754 #define ICH_VTR_SEIS_SHIFT 22
755 #define ICH_VTR_SEIS_MASK (1 << ICH_VTR_SEIS_SHIFT)
756 #define ICH_VTR_A3V_SHIFT 21
757 #define ICH_VTR_A3V_MASK (1 << ICH_VTR_A3V_SHIFT)
758 #define ICH_VTR_TDS_SHIFT 19
759 #define ICH_VTR_TDS_MASK (1 << ICH_VTR_TDS_SHIFT)
761 #define ARM64_FEATURE_FIELD_BITS 4
763 /* Defined for compatibility only, do not add new users. */
764 #define ARM64_FEATURE_MASK(x) (x##_MASK)
768 .macro mrs_s, rt, sreg
769 __emit_inst(0xd5200000|(\sreg)|(.L__gpr_num_\rt))
772 .macro msr_s, sreg, rt
773 __emit_inst(0xd5000000|(\sreg)|(.L__gpr_num_\rt))
778 #include <linux/bitfield.h>
779 #include <linux/build_bug.h>
780 #include <linux/types.h>
781 #include <asm/alternative.h>
783 #define DEFINE_MRS_S \
784 __DEFINE_ASM_GPR_NUMS \
785 " .macro mrs_s, rt, sreg\n" \
786 __emit_inst(0xd5200000|(\\sreg)|(.L__gpr_num_\\rt)) \
789 #define DEFINE_MSR_S \
790 __DEFINE_ASM_GPR_NUMS \
791 " .macro msr_s, sreg, rt\n" \
792 __emit_inst(0xd5000000|(\\sreg)|(.L__gpr_num_\\rt)) \
795 #define UNDEFINE_MRS_S \
798 #define UNDEFINE_MSR_S \
801 #define __mrs_s(v, r) \
803 " mrs_s " v ", " __stringify(r) "\n" \
806 #define __msr_s(r, v) \
808 " msr_s " __stringify(r) ", " v "\n" \
812 * Unlike read_cpuid, calls to read_sysreg are never expected to be
813 * optimized away or replaced with synthetic values.
815 #define read_sysreg(r) ({ \
817 asm volatile("mrs %0, " __stringify(r) : "=r" (__val)); \
822 * The "Z" constraint normally means a zero immediate, but when combined with
823 * the "%x0" template means XZR.
825 #define write_sysreg(v, r) do { \
826 u64 __val = (u64)(v); \
827 asm volatile("msr " __stringify(r) ", %x0" \
832 * For registers without architectural names, or simply unsupported by
835 #define read_sysreg_s(r) ({ \
837 asm volatile(__mrs_s("%0", r) : "=r" (__val)); \
841 #define write_sysreg_s(v, r) do { \
842 u64 __val = (u64)(v); \
843 asm volatile(__msr_s(r, "%x0") : : "rZ" (__val)); \
847 * Modify bits in a sysreg. Bits in the clear mask are zeroed, then bits in the
848 * set mask are set. Other bits are left as-is.
850 #define sysreg_clear_set(sysreg, clear, set) do { \
851 u64 __scs_val = read_sysreg(sysreg); \
852 u64 __scs_new = (__scs_val & ~(u64)(clear)) | (set); \
853 if (__scs_new != __scs_val) \
854 write_sysreg(__scs_new, sysreg); \
857 #define sysreg_clear_set_s(sysreg, clear, set) do { \
858 u64 __scs_val = read_sysreg_s(sysreg); \
859 u64 __scs_new = (__scs_val & ~(u64)(clear)) | (set); \
860 if (__scs_new != __scs_val) \
861 write_sysreg_s(__scs_new, sysreg); \
864 #define read_sysreg_par() ({ \
866 asm(ALTERNATIVE("nop", "dmb sy", ARM64_WORKAROUND_1508412)); \
867 par = read_sysreg(par_el1); \
868 asm(ALTERNATIVE("nop", "dmb sy", ARM64_WORKAROUND_1508412)); \
872 #define SYS_FIELD_GET(reg, field, val) \
873 FIELD_GET(reg##_##field##_MASK, val)
875 #define SYS_FIELD_PREP(reg, field, val) \
876 FIELD_PREP(reg##_##field##_MASK, val)
878 #define SYS_FIELD_PREP_ENUM(reg, field, val) \
879 FIELD_PREP(reg##_##field##_MASK, reg##_##field##_##val)
883 #endif /* __ASM_SYSREG_H */