blob: 0af5b747d46d96d7086ada187b2640af22bbe706 [file] [log] [blame]
Antonio Nino Diazc326c342019-01-11 11:20:10 +00001/*
Daniel Boulby60786e72021-10-22 11:37:34 +01002 * Copyright (c) 2019-2022, Arm Limited. All rights reserved.
Antonio Nino Diazc326c342019-01-11 11:20:10 +00003 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7#ifndef ARCH_FEATURES_H
8#define ARCH_FEATURES_H
9
10#include <stdbool.h>
11
12#include <arch_helpers.h>
13
Antonio Nino Diazd29d21e2019-02-06 09:23:04 +000014static inline bool is_armv7_gentimer_present(void)
15{
16 /* The Generic Timer is always present in an ARMv8-A implementation */
17 return true;
18}
19
Daniel Boulby44b43332020-11-25 16:36:46 +000020static inline bool is_armv8_1_pan_present(void)
21{
22 return ((read_id_aa64mmfr1_el1() >> ID_AA64MMFR1_EL1_PAN_SHIFT) &
23 ID_AA64MMFR1_EL1_PAN_MASK) != 0U;
24}
25
26static inline bool is_armv8_1_vhe_present(void)
27{
28 return ((read_id_aa64mmfr1_el1() >> ID_AA64MMFR1_EL1_VHE_SHIFT) &
29 ID_AA64MMFR1_EL1_VHE_MASK) != 0U;
30}
31
Antonio Nino Diazc326c342019-01-11 11:20:10 +000032static inline bool is_armv8_2_ttcnp_present(void)
33{
34 return ((read_id_aa64mmfr2_el1() >> ID_AA64MMFR2_EL1_CNP_SHIFT) &
35 ID_AA64MMFR2_EL1_CNP_MASK) != 0U;
36}
37
Antonio Nino Diaz25cda672019-02-19 11:53:51 +000038static inline bool is_armv8_3_pauth_present(void)
39{
40 uint64_t mask = (ID_AA64ISAR1_GPI_MASK << ID_AA64ISAR1_GPI_SHIFT) |
41 (ID_AA64ISAR1_GPA_MASK << ID_AA64ISAR1_GPA_SHIFT) |
42 (ID_AA64ISAR1_API_MASK << ID_AA64ISAR1_API_SHIFT) |
43 (ID_AA64ISAR1_APA_MASK << ID_AA64ISAR1_APA_SHIFT);
44
45 /* If any of the fields is not zero, PAuth is present */
46 return (read_id_aa64isar1_el1() & mask) != 0U;
47}
48
Daniel Boulby60786e72021-10-22 11:37:34 +010049static inline bool is_armv8_4_dit_present(void)
50{
51 return ((read_id_aa64pfr0_el1() >> ID_AA64PFR0_DIT_SHIFT) &
52 ID_AA64PFR0_DIT_MASK) == 1U;
53}
54
Sathees Balya74155972019-01-25 11:36:01 +000055static inline bool is_armv8_4_ttst_present(void)
56{
57 return ((read_id_aa64mmfr2_el1() >> ID_AA64MMFR2_EL1_ST_SHIFT) &
58 ID_AA64MMFR2_EL1_ST_MASK) == 1U;
59}
60
Alexei Fedorov90f2e882019-05-24 12:17:09 +010061static inline bool is_armv8_5_bti_present(void)
62{
63 return ((read_id_aa64pfr1_el1() >> ID_AA64PFR1_EL1_BT_SHIFT) &
64 ID_AA64PFR1_EL1_BT_MASK) == BTI_IMPLEMENTED;
65}
66
Soby Mathew830f0ad2019-07-12 09:23:38 +010067static inline unsigned int get_armv8_5_mte_support(void)
68{
69 return ((read_id_aa64pfr1_el1() >> ID_AA64PFR1_EL1_MTE_SHIFT) &
70 ID_AA64PFR1_EL1_MTE_MASK);
71}
72
Olivier Deprez2bae35f2020-04-16 13:39:06 +020073static inline bool is_armv8_4_sel2_present(void)
74{
75 return ((read_id_aa64pfr0_el1() >> ID_AA64PFR0_SEL2_SHIFT) &
76 ID_AA64PFR0_SEL2_MASK) == 1ULL;
77}
78
johpow013e24c162020-04-22 14:05:13 -050079static inline bool is_armv8_6_twed_present(void)
80{
81 return (((read_id_aa64mmfr1_el1() >> ID_AA64MMFR1_EL1_TWED_SHIFT) &
82 ID_AA64MMFR1_EL1_TWED_MASK) == ID_AA64MMFR1_EL1_TWED_SUPPORTED);
83}
84
Jimmy Brissonecc3c672020-04-16 10:47:56 -050085static inline bool is_armv8_6_fgt_present(void)
86{
87 return ((read_id_aa64mmfr0_el1() >> ID_AA64MMFR0_EL1_FGT_SHIFT) &
88 ID_AA64MMFR0_EL1_FGT_MASK) == ID_AA64MMFR0_EL1_FGT_SUPPORTED;
89}
90
Jimmy Brisson83573892020-04-16 10:48:02 -050091static inline unsigned long int get_armv8_6_ecv_support(void)
92{
93 return ((read_id_aa64mmfr0_el1() >> ID_AA64MMFR0_EL1_ECV_SHIFT) &
94 ID_AA64MMFR0_EL1_ECV_MASK);
95}
96
Tomas Pilar6fd816e2020-10-28 15:34:12 +000097static inline bool is_armv8_5_rng_present(void)
98{
99 return ((read_id_aa64isar0_el1() >> ID_AA64ISAR0_RNDR_SHIFT) &
100 ID_AA64ISAR0_RNDR_MASK);
101}
102
johpow01fa59c6f2020-10-02 13:41:11 -0500103static inline bool is_armv8_6_feat_amuv1p1_present(void)
104{
105 return (((read_id_aa64pfr0_el1() >> ID_AA64PFR0_AMU_SHIFT) &
106 ID_AA64PFR0_AMU_MASK) >= ID_AA64PFR0_AMU_V1P1);
107}
108
Alexei Fedorov19933552020-05-26 13:16:41 +0100109/*
110 * Return MPAM version:
111 *
112 * 0x00: None Armv8.0 or later
113 * 0x01: v0.1 Armv8.4 or later
114 * 0x10: v1.0 Armv8.2 or later
115 * 0x11: v1.1 Armv8.4 or later
116 *
117 */
118static inline unsigned int get_mpam_version(void)
119{
120 return (unsigned int)((((read_id_aa64pfr0_el1() >>
121 ID_AA64PFR0_MPAM_SHIFT) & ID_AA64PFR0_MPAM_MASK) << 4) |
122 ((read_id_aa64pfr1_el1() >>
123 ID_AA64PFR1_MPAM_FRAC_SHIFT) & ID_AA64PFR1_MPAM_FRAC_MASK));
124}
125
johpow01f91e59f2021-08-04 19:38:18 -0500126static inline bool is_feat_hcx_present(void)
127{
128 return (((read_id_aa64mmfr1_el1() >> ID_AA64MMFR1_EL1_HCX_SHIFT) &
129 ID_AA64MMFR1_EL1_HCX_MASK) == ID_AA64MMFR1_EL1_HCX_SUPPORTED);
130}
131
Juan Pablo Conde42305f22022-07-12 16:40:29 -0400132static inline bool is_feat_rng_trap_present(void)
133{
134 return (((read_id_aa64pfr1_el1() >> ID_AA64PFR1_EL1_RNDR_TRAP_SHIFT) &
135 ID_AA64PFR1_EL1_RNDR_TRAP_MASK)
136 == ID_AA64PFR1_EL1_RNG_TRAP_SUPPORTED);
137}
138
Zelalem Aweke79e3d292021-07-08 16:51:14 -0500139static inline unsigned int get_armv9_2_feat_rme_support(void)
140{
141 /*
142 * Return the RME version, zero if not supported. This function can be
143 * used as both an integer value for the RME version or compared to zero
144 * to detect RME presence.
145 */
146 return (unsigned int)(read_id_aa64pfr0_el1() >>
147 ID_AA64PFR0_FEAT_RME_SHIFT) & ID_AA64PFR0_FEAT_RME_MASK;
148}
149
Jayanth Dodderi Chidanand9461a892022-01-17 18:57:17 +0000150/*********************************************************************************
151 * Function to identify the presence of FEAT_SB (Speculation Barrier Instruction)
152 ********************************************************************************/
153static inline bool is_armv8_0_feat_sb_present(void)
154{
155 return (((read_id_aa64isar1_el1() >> ID_AA64ISAR1_SB_SHIFT) &
156 ID_AA64ISAR1_SB_MASK) == ID_AA64ISAR1_SB_SUPPORTED);
157}
158
159/*********************************************************************************
160 * Function to identify the presence of FEAT_CSV2_2 (Cache Speculation Variant 2)
161 ********************************************************************************/
162static inline bool is_armv8_0_feat_csv2_2_present(void)
163{
164 return (((read_id_aa64pfr0_el1() >> ID_AA64PFR0_CSV2_SHIFT) &
165 ID_AA64PFR0_CSV2_MASK) == ID_AA64PFR0_CSV2_2_SUPPORTED);
166}
167
168/**********************************************************************************
169 * Function to identify the presence of FEAT_SPE (Statistical Profiling Extension)
170 *********************************************************************************/
171static inline bool is_armv8_2_feat_spe_present(void)
172{
173 return (((read_id_aa64dfr0_el1() >> ID_AA64DFR0_PMS_SHIFT) &
174 ID_AA64DFR0_PMS_MASK) != ID_AA64DFR0_SPE_NOT_SUPPORTED);
175}
176
177/*******************************************************************************
178 * Function to identify the presence of FEAT_SVE (Scalable Vector Extension)
179 ******************************************************************************/
180static inline bool is_armv8_2_feat_sve_present(void)
181{
182 return (((read_id_aa64pfr0_el1() >> ID_AA64PFR0_SVE_SHIFT) &
183 ID_AA64PFR0_SVE_MASK) == ID_AA64PFR0_SVE_SUPPORTED);
184}
185
186/*******************************************************************************
187 * Function to identify the presence of FEAT_RAS (Reliability,Availability,
188 * and Serviceability Extension)
189 ******************************************************************************/
190static inline bool is_armv8_2_feat_ras_present(void)
191{
192 return (((read_id_aa64pfr0_el1() >> ID_AA64PFR0_RAS_SHIFT) &
193 ID_AA64PFR0_RAS_MASK) != ID_AA64PFR0_RAS_NOT_SUPPORTED);
194}
195
196/**************************************************************************
197 * Function to identify the presence of FEAT_DIT (Data Independent Timing)
198 *************************************************************************/
199static inline bool is_armv8_4_feat_dit_present(void)
200{
201 return (((read_id_aa64pfr0_el1() >> ID_AA64PFR0_DIT_SHIFT) &
202 ID_AA64PFR0_DIT_MASK) == ID_AA64PFR0_DIT_SUPPORTED);
203}
204
205/*************************************************************************
206 * Function to identify the presence of FEAT_TRF (TraceLift)
207 ************************************************************************/
208static inline bool is_arm8_4_feat_trf_present(void)
209{
210 return (((read_id_aa64dfr0_el1() >> ID_AA64DFR0_TRACEFILT_SHIFT) &
211 ID_AA64DFR0_TRACEFILT_MASK) == ID_AA64DFR0_TRACEFILT_SUPPORTED);
212}
213
214/*******************************************************************************
215 * Function to identify the presence of FEAT_AMUv1 (Activity Monitors-
216 * Extension v1)
217 ******************************************************************************/
218static inline bool is_armv8_4_feat_amuv1_present(void)
219{
220 return (((read_id_aa64pfr0_el1() >> ID_AA64PFR0_AMU_SHIFT) &
221 ID_AA64PFR0_AMU_MASK) >= ID_AA64PFR0_AMU_V1);
222}
223
224/********************************************************************************
225 * Function to identify the presence of FEAT_NV2 (Enhanced Nested Virtualization
226 * Support)
227 *******************************************************************************/
228static inline unsigned int get_armv8_4_feat_nv_support(void)
229{
230 return (((read_id_aa64mmfr2_el1() >> ID_AA64MMFR2_EL1_NV_SHIFT) &
231 ID_AA64MMFR2_EL1_NV_MASK));
232}
233
Jayanth Dodderi Chidanand69316752022-05-09 12:33:03 +0100234/*******************************************************************************
235 * Function to identify the presence of FEAT_BRBE (Branch Record Buffer
236 * Extension)
237 ******************************************************************************/
238static inline bool is_feat_brbe_present(void)
239{
240 return (((read_id_aa64dfr0_el1() >> ID_AA64DFR0_BRBE_SHIFT) &
241 ID_AA64DFR0_BRBE_MASK) == ID_AA64DFR0_BRBE_SUPPORTED);
242}
243
Jayanth Dodderi Chidananda793ccc2022-05-19 14:08:28 +0100244/*******************************************************************************
245 * Function to identify the presence of FEAT_TRBE (Trace Buffer Extension)
246 ******************************************************************************/
247static inline bool is_feat_trbe_present(void)
248{
249 return (((read_id_aa64dfr0_el1() >> ID_AA64DFR0_TRACEBUFFER_SHIFT) &
250 ID_AA64DFR0_TRACEBUFFER_MASK) == ID_AA64DFR0_TRACEBUFFER_SUPPORTED);
251}
Jayanth Dodderi Chidanand69316752022-05-09 12:33:03 +0100252
Antonio Nino Diazc326c342019-01-11 11:20:10 +0000253#endif /* ARCH_FEATURES_H */