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git01.mediatek.com / filogic / atf / d4d2b6929eb6797dc7f2e69c7b9cbe48c1fdf9ad / . / lib / cpus / aarch64 / cpuamu_helpers.S
blob: e71e3458c4302fe0112196e224eaf056a3fb2602 [file] [log] [blame]
Dimitris Papastamos0b00f8a2018-02-14 10:00:06 +0000[diff] [blame]1/*
Govindraj Rajaeee28e72023-08-01 15:52:40 -0500[diff] [blame]2 * Copyright (c) 2018-2019, Arm Limited and Contributors. All rights reserved.
Dimitris Papastamos0b00f8a2018-02-14 10:00:06 +0000[diff] [blame]3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7#include <arch.h>
8#include <asm_macros.S>
9#include <cpuamu.h>
10
11 .globl cpuamu_cnt_read
12 .globl cpuamu_cnt_write
13 .globl cpuamu_read_cpuamcntenset_el0
14 .globl cpuamu_read_cpuamcntenclr_el0
15 .globl cpuamu_write_cpuamcntenset_el0
16 .globl cpuamu_write_cpuamcntenclr_el0
17
18/*
Antonio Nino Diaz033b4bb2018-10-25 16:52:26 +0100[diff] [blame]19 * uint64_t cpuamu_cnt_read(unsigned int idx);
Dimitris Papastamos0b00f8a2018-02-14 10:00:06 +0000[diff] [blame]20 *
21 * Given `idx`, read the corresponding AMU counter
22 * and return it in `x0`.
23 */
24func cpuamu_cnt_read
25 adr x1, 1f
Alexei Fedorov90f2e882019-05-24 12:17:09 +0100[diff] [blame]26 add x1, x1, x0, lsl #3 /* each mrs/ret sequence is 8 bytes */
27#if ENABLE_BTI
28 add x1, x1, x0, lsl #2 /* + "bti j" instruction */
29#endif
Dimitris Papastamos0b00f8a2018-02-14 10:00:06 +0000[diff] [blame]30 br x1
31
Alexei Fedorov90f2e882019-05-24 12:17:09 +0100[diff] [blame]321: read CPUAMEVCNTR0_EL0
33 read CPUAMEVCNTR1_EL0
34 read CPUAMEVCNTR2_EL0
35 read CPUAMEVCNTR3_EL0
36 read CPUAMEVCNTR4_EL0
Dimitris Papastamos0b00f8a2018-02-14 10:00:06 +0000[diff] [blame]37endfunc cpuamu_cnt_read
38
39/*
Antonio Nino Diaz033b4bb2018-10-25 16:52:26 +0100[diff] [blame]40 * void cpuamu_cnt_write(unsigned int idx, uint64_t val);
Dimitris Papastamos0b00f8a2018-02-14 10:00:06 +0000[diff] [blame]41 *
42 * Given `idx`, write `val` to the corresponding AMU counter.
43 */
44func cpuamu_cnt_write
45 adr x2, 1f
Alexei Fedorov90f2e882019-05-24 12:17:09 +0100[diff] [blame]46 add x2, x2, x0, lsl #3 /* each msr/ret sequence is 8 bytes */
47#if ENABLE_BTI
48 add x2, x2, x0, lsl #2 /* + "bti j" instruction */
49#endif
Dimitris Papastamos0b00f8a2018-02-14 10:00:06 +0000[diff] [blame]50 br x2
51
Alexei Fedorov90f2e882019-05-24 12:17:09 +0100[diff] [blame]521: write CPUAMEVCNTR0_EL0
53 write CPUAMEVCNTR1_EL0
54 write CPUAMEVCNTR2_EL0
55 write CPUAMEVCNTR3_EL0
56 write CPUAMEVCNTR4_EL0
Dimitris Papastamos0b00f8a2018-02-14 10:00:06 +0000[diff] [blame]57endfunc cpuamu_cnt_write
58
59/*
60 * unsigned int cpuamu_read_cpuamcntenset_el0(void);
61 *
62 * Read the `CPUAMCNTENSET_EL0` CPU register and return
63 * it in `x0`.
64 */
65func cpuamu_read_cpuamcntenset_el0
66 mrs x0, CPUAMCNTENSET_EL0
67 ret
68endfunc cpuamu_read_cpuamcntenset_el0
69
70/*
71 * unsigned int cpuamu_read_cpuamcntenclr_el0(void);
72 *
73 * Read the `CPUAMCNTENCLR_EL0` CPU register and return
74 * it in `x0`.
75 */
76func cpuamu_read_cpuamcntenclr_el0
77 mrs x0, CPUAMCNTENCLR_EL0
78 ret
79endfunc cpuamu_read_cpuamcntenclr_el0
80
81/*
82 * void cpuamu_write_cpuamcntenset_el0(unsigned int mask);
83 *
84 * Write `mask` to the `CPUAMCNTENSET_EL0` CPU register.
85 */
86func cpuamu_write_cpuamcntenset_el0
87 msr CPUAMCNTENSET_EL0, x0
88 ret
89endfunc cpuamu_write_cpuamcntenset_el0
90
91/*
92 * void cpuamu_write_cpuamcntenclr_el0(unsigned int mask);
93 *
94 * Write `mask` to the `CPUAMCNTENCLR_EL0` CPU register.
95 */
96func cpuamu_write_cpuamcntenclr_el0
97 msr CPUAMCNTENCLR_EL0, x0
98 ret
99endfunc cpuamu_write_cpuamcntenclr_el0