aboutsummaryrefslogtreecommitdiff
path: root/include/lib/aarch64/arch_helpers.h
blob: 8e82dbdc7fa75fb8af2d93cc10493b75bcfc6d4e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
/*
 * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#ifndef __ARCH_HELPERS_H__
#define __ARCH_HELPERS_H__

#include <arch.h>	/* for additional register definitions */
#include <cdefs.h>	/* For __dead2 */
#include <stdint.h>
#include <sys/types.h>

/**********************************************************************
 * Macros which create inline functions to read or write CPU system
 * registers
 *********************************************************************/

#define _DEFINE_SYSREG_READ_FUNC(_name, _reg_name)		\
static inline u_register_t read_ ## _name(void)			\
{								\
	u_register_t v;						\
	__asm__ volatile ("mrs %0, " #_reg_name : "=r" (v));	\
	return v;						\
}

#define _DEFINE_SYSREG_WRITE_FUNC(_name, _reg_name)			\
static inline void write_ ## _name(u_register_t v)			\
{									\
	__asm__ volatile ("msr " #_reg_name ", %0" : : "r" (v));	\
}

#define SYSREG_WRITE_CONST(reg_name, v)				\
	__asm__ volatile ("msr " #reg_name ", %0" : : "i" (v))

/* Define read function for system register */
#define DEFINE_SYSREG_READ_FUNC(_name) 			\
	_DEFINE_SYSREG_READ_FUNC(_name, _name)

/* Define read & write function for system register */
#define DEFINE_SYSREG_RW_FUNCS(_name)			\
	_DEFINE_SYSREG_READ_FUNC(_name, _name)		\
	_DEFINE_SYSREG_WRITE_FUNC(_name, _name)

/* Define read & write function for renamed system register */
#define DEFINE_RENAME_SYSREG_RW_FUNCS(_name, _reg_name)	\
	_DEFINE_SYSREG_READ_FUNC(_name, _reg_name)	\
	_DEFINE_SYSREG_WRITE_FUNC(_name, _reg_name)

/* Define read function for renamed system register */
#define DEFINE_RENAME_SYSREG_READ_FUNC(_name, _reg_name)	\
	_DEFINE_SYSREG_READ_FUNC(_name, _reg_name)

/* Define write function for renamed system register */
#define DEFINE_RENAME_SYSREG_WRITE_FUNC(_name, _reg_name)	\
	_DEFINE_SYSREG_WRITE_FUNC(_name, _reg_name)

/**********************************************************************
 * Macros to create inline functions for system instructions
 *********************************************************************/

/* Define function for simple system instruction */
#define DEFINE_SYSOP_FUNC(_op)				\
static inline void _op(void)				\
{							\
	__asm__ (#_op);					\
}

/* Define function for system instruction with type specifier */
#define DEFINE_SYSOP_TYPE_FUNC(_op, _type)		\
static inline void _op ## _type(void)			\
{							\
	__asm__ (#_op " " #_type);			\
}

/* Define function for system instruction with register parameter */
#define DEFINE_SYSOP_TYPE_PARAM_FUNC(_op, _type)	\
static inline void _op ## _type(uint64_t v)		\
{							\
	 __asm__ (#_op " " #_type ", %0" : : "r" (v));	\
}

/*******************************************************************************
 * TLB maintenance accessor prototypes
 ******************************************************************************/

#if ERRATA_A57_813419
/*
 * Define function for TLBI instruction with type specifier that implements
 * the workaround for errata 813419 of Cortex-A57.
 */
#define DEFINE_TLBIOP_ERRATA_A57_813419_TYPE_FUNC(_type)\
static inline void tlbi ## _type(void)			\
{							\
	__asm__("tlbi " #_type "\n"			\
		"dsb ish\n"				\
		"tlbi " #_type);			\
}

/*
 * Define function for TLBI instruction with register parameter that implements
 * the workaround for errata 813419 of Cortex-A57.
 */
#define DEFINE_TLBIOP_ERRATA_A57_813419_TYPE_PARAM_FUNC(_type)	\
static inline void tlbi ## _type(uint64_t v)			\
{								\
	__asm__("tlbi " #_type ", %0\n"				\
		"dsb ish\n"					\
		"tlbi " #_type ", %0" : : "r" (v));		\
}
#endif /* ERRATA_A57_813419 */

DEFINE_SYSOP_TYPE_FUNC(tlbi, alle1)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle1is)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle2)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle2is)
#if ERRATA_A57_813419
DEFINE_TLBIOP_ERRATA_A57_813419_TYPE_FUNC(alle3)
DEFINE_TLBIOP_ERRATA_A57_813419_TYPE_FUNC(alle3is)
#else
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle3)
DEFINE_SYSOP_TYPE_FUNC(tlbi, alle3is)
#endif
DEFINE_SYSOP_TYPE_FUNC(tlbi, vmalle1)

DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vaae1is)
DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vaale1is)
DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vae2is)
DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vale2is)
#if ERRATA_A57_813419
DEFINE_TLBIOP_ERRATA_A57_813419_TYPE_PARAM_FUNC(vae3is)
DEFINE_TLBIOP_ERRATA_A57_813419_TYPE_PARAM_FUNC(vale3is)
#else
DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vae3is)
DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vale3is)
#endif

/*******************************************************************************
 * Cache maintenance accessor prototypes
 ******************************************************************************/
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, isw)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, cisw)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, csw)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, cvac)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, ivac)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, civac)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, cvau)
DEFINE_SYSOP_TYPE_PARAM_FUNC(dc, zva)

/*******************************************************************************
 * Address translation accessor prototypes
 ******************************************************************************/
DEFINE_SYSOP_TYPE_PARAM_FUNC(at, s12e1r)
DEFINE_SYSOP_TYPE_PARAM_FUNC(at, s12e1w)
DEFINE_SYSOP_TYPE_PARAM_FUNC(at, s12e0r)
DEFINE_SYSOP_TYPE_PARAM_FUNC(at, s12e0w)
DEFINE_SYSOP_TYPE_PARAM_FUNC(at, s1e2r)

void flush_dcache_range(uintptr_t addr, size_t size);
void clean_dcache_range(uintptr_t addr, size_t size);
void inv_dcache_range(uintptr_t addr, size_t size);

void dcsw_op_louis(u_register_t op_type);
void dcsw_op_all(u_register_t op_type);

void disable_mmu_el1(void);
void disable_mmu_el3(void);
void disable_mmu_icache_el1(void);
void disable_mmu_icache_el3(void);

/*******************************************************************************
 * Misc. accessor prototypes
 ******************************************************************************/

#define write_daifclr(val) SYSREG_WRITE_CONST(daifclr, val)
#define write_daifset(val) SYSREG_WRITE_CONST(daifset, val)

DEFINE_SYSREG_READ_FUNC(par_el1)
DEFINE_SYSREG_READ_FUNC(id_pfr1_el1)
DEFINE_SYSREG_READ_FUNC(id_aa64pfr0_el1)
DEFINE_SYSREG_READ_FUNC(id_aa64dfr0_el1)
DEFINE_SYSREG_READ_FUNC(CurrentEl)
DEFINE_SYSREG_RW_FUNCS(daif)
DEFINE_SYSREG_RW_FUNCS(spsr_el1)
DEFINE_SYSREG_RW_FUNCS(spsr_el2)
DEFINE_SYSREG_RW_FUNCS(spsr_el3)
DEFINE_SYSREG_RW_FUNCS(elr_el1)
DEFINE_SYSREG_RW_FUNCS(elr_el2)
DEFINE_SYSREG_RW_FUNCS(elr_el3)

DEFINE_SYSOP_FUNC(wfi)
DEFINE_SYSOP_FUNC(wfe)
DEFINE_SYSOP_FUNC(sev)
DEFINE_SYSOP_TYPE_FUNC(dsb, sy)
DEFINE_SYSOP_TYPE_FUNC(dmb, sy)
DEFINE_SYSOP_TYPE_FUNC(dmb, st)
DEFINE_SYSOP_TYPE_FUNC(dmb, ld)
DEFINE_SYSOP_TYPE_FUNC(dsb, ish)
DEFINE_SYSOP_TYPE_FUNC(dsb, nsh)
DEFINE_SYSOP_TYPE_FUNC(dsb, ishst)
DEFINE_SYSOP_TYPE_FUNC(dmb, ish)
DEFINE_SYSOP_TYPE_FUNC(dmb, ishst)
DEFINE_SYSOP_FUNC(isb)

uint32_t get_afflvl_shift(uint32_t);
uint32_t mpidr_mask_lower_afflvls(uint64_t, uint32_t);


void __dead2 eret(uint64_t x0, uint64_t x1, uint64_t x2, uint64_t x3,
		  uint64_t x4, uint64_t x5, uint64_t x6, uint64_t x7);
void __dead2 smc(uint64_t x0, uint64_t x1, uint64_t x2, uint64_t x3,
		 uint64_t x4, uint64_t x5, uint64_t x6, uint64_t x7);

/*******************************************************************************
 * System register accessor prototypes
 ******************************************************************************/
DEFINE_SYSREG_READ_FUNC(midr_el1)
DEFINE_SYSREG_READ_FUNC(mpidr_el1)
DEFINE_SYSREG_READ_FUNC(id_aa64mmfr0_el1)

DEFINE_SYSREG_RW_FUNCS(scr_el3)
DEFINE_SYSREG_RW_FUNCS(hcr_el2)

DEFINE_SYSREG_RW_FUNCS(vbar_el1)
DEFINE_SYSREG_RW_FUNCS(vbar_el2)
DEFINE_SYSREG_RW_FUNCS(vbar_el3)

DEFINE_SYSREG_RW_FUNCS(sctlr_el1)
DEFINE_SYSREG_RW_FUNCS(sctlr_el2)
DEFINE_SYSREG_RW_FUNCS(sctlr_el3)

DEFINE_SYSREG_RW_FUNCS(actlr_el1)
DEFINE_SYSREG_RW_FUNCS(actlr_el2)
DEFINE_SYSREG_RW_FUNCS(actlr_el3)

DEFINE_SYSREG_RW_FUNCS(esr_el1)
DEFINE_SYSREG_RW_FUNCS(esr_el2)
DEFINE_SYSREG_RW_FUNCS(esr_el3)

DEFINE_SYSREG_RW_FUNCS(afsr0_el1)
DEFINE_SYSREG_RW_FUNCS(afsr0_el2)
DEFINE_SYSREG_RW_FUNCS(afsr0_el3)

DEFINE_SYSREG_RW_FUNCS(afsr1_el1)
DEFINE_SYSREG_RW_FUNCS(afsr1_el2)
DEFINE_SYSREG_RW_FUNCS(afsr1_el3)

DEFINE_SYSREG_RW_FUNCS(far_el1)
DEFINE_SYSREG_RW_FUNCS(far_el2)
DEFINE_SYSREG_RW_FUNCS(far_el3)

DEFINE_SYSREG_RW_FUNCS(mair_el1)
DEFINE_SYSREG_RW_FUNCS(mair_el2)
DEFINE_SYSREG_RW_FUNCS(mair_el3)

DEFINE_SYSREG_RW_FUNCS(amair_el1)
DEFINE_SYSREG_RW_FUNCS(amair_el2)
DEFINE_SYSREG_RW_FUNCS(amair_el3)

DEFINE_SYSREG_READ_FUNC(rvbar_el1)
DEFINE_SYSREG_READ_FUNC(rvbar_el2)
DEFINE_SYSREG_READ_FUNC(rvbar_el3)

DEFINE_SYSREG_RW_FUNCS(rmr_el1)
DEFINE_SYSREG_RW_FUNCS(rmr_el2)
DEFINE_SYSREG_RW_FUNCS(rmr_el3)

DEFINE_SYSREG_RW_FUNCS(tcr_el1)
DEFINE_SYSREG_RW_FUNCS(tcr_el2)
DEFINE_SYSREG_RW_FUNCS(tcr_el3)

DEFINE_SYSREG_RW_FUNCS(ttbr0_el1)
DEFINE_SYSREG_RW_FUNCS(ttbr0_el2)
DEFINE_SYSREG_RW_FUNCS(ttbr0_el3)

DEFINE_SYSREG_RW_FUNCS(ttbr1_el1)

DEFINE_SYSREG_RW_FUNCS(vttbr_el2)

DEFINE_SYSREG_RW_FUNCS(cptr_el2)
DEFINE_SYSREG_RW_FUNCS(cptr_el3)

DEFINE_SYSREG_RW_FUNCS(cpacr_el1)
DEFINE_SYSREG_RW_FUNCS(cntfrq_el0)
DEFINE_SYSREG_RW_FUNCS(cntps_ctl_el1)
DEFINE_SYSREG_RW_FUNCS(cntps_tval_el1)
DEFINE_SYSREG_RW_FUNCS(cntps_cval_el1)
DEFINE_SYSREG_READ_FUNC(cntpct_el0)
DEFINE_SYSREG_RW_FUNCS(cnthctl_el2)

DEFINE_SYSREG_RW_FUNCS(tpidr_el3)

DEFINE_SYSREG_RW_FUNCS(cntvoff_el2)

DEFINE_SYSREG_RW_FUNCS(vpidr_el2)
DEFINE_SYSREG_RW_FUNCS(vmpidr_el2)
DEFINE_SYSREG_RW_FUNCS(cntp_ctl_el0)

DEFINE_SYSREG_READ_FUNC(isr_el1)

DEFINE_SYSREG_READ_FUNC(ctr_el0)

DEFINE_SYSREG_RW_FUNCS(mdcr_el2)
DEFINE_SYSREG_RW_FUNCS(mdcr_el3)
DEFINE_SYSREG_RW_FUNCS(hstr_el2)
DEFINE_SYSREG_RW_FUNCS(cnthp_ctl_el2)
DEFINE_SYSREG_RW_FUNCS(pmcr_el0)

DEFINE_RENAME_SYSREG_RW_FUNCS(icc_sre_el1, ICC_SRE_EL1)
DEFINE_RENAME_SYSREG_RW_FUNCS(icc_sre_el2, ICC_SRE_EL2)
DEFINE_RENAME_SYSREG_RW_FUNCS(icc_sre_el3, ICC_SRE_EL3)
DEFINE_RENAME_SYSREG_RW_FUNCS(icc_pmr_el1, ICC_PMR_EL1)
DEFINE_RENAME_SYSREG_READ_FUNC(icc_rpr_el1, ICC_RPR_EL1)
DEFINE_RENAME_SYSREG_RW_FUNCS(icc_igrpen1_el3, ICC_IGRPEN1_EL3)
DEFINE_RENAME_SYSREG_RW_FUNCS(icc_igrpen0_el1, ICC_IGRPEN0_EL1)
DEFINE_RENAME_SYSREG_READ_FUNC(icc_hppir0_el1, ICC_HPPIR0_EL1)
DEFINE_RENAME_SYSREG_READ_FUNC(icc_hppir1_el1, ICC_HPPIR1_EL1)
DEFINE_RENAME_SYSREG_READ_FUNC(icc_iar0_el1, ICC_IAR0_EL1)
DEFINE_RENAME_SYSREG_READ_FUNC(icc_iar1_el1, ICC_IAR1_EL1)
DEFINE_RENAME_SYSREG_WRITE_FUNC(icc_eoir0_el1, ICC_EOIR0_EL1)
DEFINE_RENAME_SYSREG_WRITE_FUNC(icc_eoir1_el1, ICC_EOIR1_EL1)
DEFINE_RENAME_SYSREG_WRITE_FUNC(icc_sgi0r_el1, ICC_SGI0R_EL1)

DEFINE_RENAME_SYSREG_RW_FUNCS(amcgcr_el0, AMCGCR_EL0)
DEFINE_RENAME_SYSREG_RW_FUNCS(amcntenclr0_el0, AMCNTENCLR0_EL0)
DEFINE_RENAME_SYSREG_RW_FUNCS(amcntenset0_el0, AMCNTENSET0_EL0)
DEFINE_RENAME_SYSREG_RW_FUNCS(amcntenclr1_el0, AMCNTENCLR1_EL0)
DEFINE_RENAME_SYSREG_RW_FUNCS(amcntenset1_el0, AMCNTENSET1_EL0)

DEFINE_RENAME_SYSREG_READ_FUNC(mpamidr_el1, MPAMIDR_EL1)
DEFINE_RENAME_SYSREG_RW_FUNCS(mpam3_el3, MPAM3_EL3)
DEFINE_RENAME_SYSREG_RW_FUNCS(mpam2_el2, MPAM2_EL2)
DEFINE_RENAME_SYSREG_RW_FUNCS(mpamhcr_el2, MPAMHCR_EL2)

DEFINE_RENAME_SYSREG_RW_FUNCS(pmblimitr_el1, PMBLIMITR_EL1)

DEFINE_RENAME_SYSREG_WRITE_FUNC(zcr_el3, ZCR_EL3)
DEFINE_RENAME_SYSREG_WRITE_FUNC(zcr_el2, ZCR_EL2)

DEFINE_RENAME_SYSREG_READ_FUNC(erridr_el1, ERRIDR_EL1)
DEFINE_RENAME_SYSREG_WRITE_FUNC(errselr_el1, ERRSELR_EL1)

DEFINE_RENAME_SYSREG_READ_FUNC(erxfr_el1, ERXFR_EL1)
DEFINE_RENAME_SYSREG_RW_FUNCS(erxctlr_el1, ERXCTLR_EL1)
DEFINE_RENAME_SYSREG_RW_FUNCS(erxstatus_el1, ERXSTATUS_EL1)
DEFINE_RENAME_SYSREG_READ_FUNC(erxaddr_el1, ERXADDR_EL1)
DEFINE_RENAME_SYSREG_READ_FUNC(erxmisc0_el1, ERXMISC0_EL1)
DEFINE_RENAME_SYSREG_READ_FUNC(erxmisc1_el1, ERXMISC1_EL1)

#define IS_IN_EL(x) \
	(GET_EL(read_CurrentEl()) == MODE_EL##x)

#define IS_IN_EL1() IS_IN_EL(1)
#define IS_IN_EL3() IS_IN_EL(3)

/*
 * Check if an EL is implemented from AA64PFR0 register fields. 'el' argument
 * must be one of 1, 2 or 3.
 */
#define EL_IMPLEMENTED(el) \
	((read_id_aa64pfr0_el1() >> ID_AA64PFR0_EL##el##_SHIFT) \
		& ID_AA64PFR0_ELX_MASK)

/* Previously defined accesor functions with incomplete register names  */

#define read_current_el()	read_CurrentEl()

#define dsb()			dsbsy()

#define read_midr()		read_midr_el1()

#define read_mpidr()		read_mpidr_el1()

#define read_scr()		read_scr_el3()
#define write_scr(_v)		write_scr_el3(_v)

#define read_hcr()		read_hcr_el2()
#define write_hcr(_v)		write_hcr_el2(_v)

#define read_cpacr()		read_cpacr_el1()
#define write_cpacr(_v)		write_cpacr_el1(_v)

#endif /* __ARCH_HELPERS_H__ */