mirror of
https://github.com/openharmony/kernel_linux_common_modules.git
synced 2026-08-27 09:41:18 -04:00
Haryslee
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (c) 2023 Huawei Device Co., Ltd.
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*
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* Pointer authentication keys initialisation.
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*/
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#ifndef __ASM_POINTER_AUTH_KEY_H
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#define __ASM_POINTER_AUTH_KEY_H
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#include <asm/alternative.h>
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#include <asm/asm-offsets.h>
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#include <asm/cpucaps.h>
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#include <asm/sysreg.h>
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.macro __ptrauth_address_keys_install_kernel tmp1, tmp2, tmp3
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ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_KERNEL_KEY_APIB]
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msr_s SYS_APIBKEYLO_EL1, \tmp2
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msr_s SYS_APIBKEYHI_EL1, \tmp3
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adr_l \tmp1, kernel_common_keys
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ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_KERNEL_KEY_APIA]
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msr_s SYS_APIAKEYLO_EL1, \tmp2
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msr_s SYS_APIAKEYHI_EL1, \tmp3
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ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_KERNEL_KEY_APDA]
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msr_s SYS_APDAKEYLO_EL1, \tmp2
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msr_s SYS_APDAKEYHI_EL1, \tmp3
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ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_KERNEL_KEY_APDB]
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msr_s SYS_APDBKEYLO_EL1, \tmp2
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msr_s SYS_APDBKEYHI_EL1, \tmp3
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.endm
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.macro __ptrauth_generic_key_install_kernel tmp1, tmp2, tmp3
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ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_KERNEL_KEY_APGA]
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msr_s SYS_APGAKEYLO_EL1, \tmp2
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msr_s SYS_APGAKEYHI_EL1, \tmp3
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.endm
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.macro ptrauth_keys_install_kernel_all tsk, tmp1, tmp2, tmp3
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mov \tmp1, #THREAD_KEYS_KERNEL
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add \tmp1, \tsk, \tmp1
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alternative_if_not ARM64_HAS_ADDRESS_AUTH
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b .Lno_addr_auth\@
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alternative_else_nop_endif
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__ptrauth_address_keys_install_kernel \tmp1, \tmp2, \tmp3
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.Lno_addr_auth\@:
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alternative_if ARM64_HAS_GENERIC_AUTH
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__ptrauth_generic_key_install_kernel \tmp1, \tmp2, \tmp3
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alternative_else_nop_endif
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isb
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.endm
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.macro __ptrauth_keys_install_kernel_all tsk, tmp1, tmp2, tmp3
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mov \tmp1, #THREAD_KEYS_KERNEL
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add \tmp1, \tsk, \tmp1
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__ptrauth_address_keys_install_kernel \tmp1, \tmp2, \tmp3
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__ptrauth_generic_key_install_kernel \tmp1, \tmp2, \tmp3
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.endm
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#endif
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