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> 20#include <linux/arm-smccc.h> 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 52ENTRY(__bp_harden_hyp_vecs_start) 53 .rept 4 54 vectors __kvm_hyp_vector 55 .endr 56ENTRY(__bp_harden_hyp_vecs_end) 57 58 59ENTRY(__smccc_workaround_1_smc_start) 60 sub sp, sp, #(8 * 4) 61 stp x2, x3, [sp, #(8 * 0)] 62 stp x0, x1, [sp, #(8 * 2)] 63 mov w0, #ARM_SMCCC_ARCH_WORKAROUND_1 64 smc #0 65 ldp x2, x3, [sp, #(8 * 0)] 66 ldp x0, x1, [sp, #(8 * 2)] 67 add sp, sp, #(8 * 4) 68ENTRY(__smccc_workaround_1_smc_end) 69