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ec52ee18 WD |
1 | /* |
2 | * Contains CPU specific branch predictor invalidation sequences | |
3 | * | |
4 | * Copyright (C) 2018 ARM Ltd. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | ||
19 | #include <linux/linkage.h> | |
a23a1a7e | 20 | #include <linux/arm-smccc.h> |
ec52ee18 WD |
21 | |
22 | .macro ventry target | |
23 | .rept 31 | |
24 | nop | |
25 | .endr | |
26 | b \target | |
27 | .endm | |
28 | ||
29 | .macro vectors target | |
30 | ventry \target + 0x000 | |
31 | ventry \target + 0x080 | |
32 | ventry \target + 0x100 | |
33 | ventry \target + 0x180 | |
34 | ||
35 | ventry \target + 0x200 | |
36 | ventry \target + 0x280 | |
37 | ventry \target + 0x300 | |
38 | ventry \target + 0x380 | |
39 | ||
40 | ventry \target + 0x400 | |
41 | ventry \target + 0x480 | |
42 | ventry \target + 0x500 | |
43 | ventry \target + 0x580 | |
44 | ||
45 | ventry \target + 0x600 | |
46 | ventry \target + 0x680 | |
47 | ventry \target + 0x700 | |
48 | ventry \target + 0x780 | |
49 | .endm | |
50 | ||
51 | .align 11 | |
52 | ENTRY(__bp_harden_hyp_vecs_start) | |
53 | .rept 4 | |
54 | vectors __kvm_hyp_vector | |
55 | .endr | |
56 | ENTRY(__bp_harden_hyp_vecs_end) | |
a516894a SD |
57 | |
58 | ENTRY(__qcom_hyp_sanitize_link_stack_start) | |
59 | stp x29, x30, [sp, #-16]! | |
60 | .rept 16 | |
61 | bl . + 4 | |
62 | .endr | |
63 | ldp x29, x30, [sp], #16 | |
64 | ENTRY(__qcom_hyp_sanitize_link_stack_end) | |
a23a1a7e MZ |
65 | |
66 | .macro smccc_workaround_1 inst | |
67 | sub sp, sp, #(8 * 4) | |
68 | stp x2, x3, [sp, #(8 * 0)] | |
69 | stp x0, x1, [sp, #(8 * 2)] | |
70 | mov w0, #ARM_SMCCC_ARCH_WORKAROUND_1 | |
71 | \inst #0 | |
72 | ldp x2, x3, [sp, #(8 * 0)] | |
73 | ldp x0, x1, [sp, #(8 * 2)] | |
74 | add sp, sp, #(8 * 4) | |
75 | .endm | |
76 | ||
77 | ENTRY(__smccc_workaround_1_smc_start) | |
78 | smccc_workaround_1 smc | |
79 | ENTRY(__smccc_workaround_1_smc_end) | |
80 | ||
81 | ENTRY(__smccc_workaround_1_hvc_start) | |
82 | smccc_workaround_1 hvc | |
83 | ENTRY(__smccc_workaround_1_hvc_end) |