b2d71f275d
Normally we include the full register name in the defines for fields within registers but this has not been followed for ID registers. In preparation for automatic generation of defines add the _EL1s into the defines for ID_AA64ISAR2_EL1 to follow the convention. No functional changes. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20220704170302.2609529-17-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org>
93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_ASM_POINTER_AUTH_H
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#define __ASM_ASM_POINTER_AUTH_H
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#include <asm/alternative.h>
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#include <asm/asm-offsets.h>
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#include <asm/cpufeature.h>
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#include <asm/sysreg.h>
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#ifdef CONFIG_ARM64_PTR_AUTH_KERNEL
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.macro __ptrauth_keys_install_kernel_nosync 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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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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.endm
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.macro ptrauth_keys_install_kernel_nosync tsk, tmp1, tmp2, tmp3
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alternative_if ARM64_HAS_ADDRESS_AUTH
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__ptrauth_keys_install_kernel_nosync \tsk, \tmp1, \tmp2, \tmp3
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alternative_else_nop_endif
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.endm
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.macro ptrauth_keys_install_kernel tsk, tmp1, tmp2, tmp3
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alternative_if ARM64_HAS_ADDRESS_AUTH
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__ptrauth_keys_install_kernel_nosync \tsk, \tmp1, \tmp2, \tmp3
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isb
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alternative_else_nop_endif
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.endm
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#else /* CONFIG_ARM64_PTR_AUTH_KERNEL */
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.macro __ptrauth_keys_install_kernel_nosync tsk, tmp1, tmp2, tmp3
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.endm
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.macro ptrauth_keys_install_kernel_nosync tsk, tmp1, tmp2, tmp3
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.endm
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.macro ptrauth_keys_install_kernel tsk, tmp1, tmp2, tmp3
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.endm
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#endif /* CONFIG_ARM64_PTR_AUTH_KERNEL */
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#ifdef CONFIG_ARM64_PTR_AUTH
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/*
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* thread.keys_user.ap* as offset exceeds the #imm offset range
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* so use the base value of ldp as thread.keys_user and offset as
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* thread.keys_user.ap*.
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*/
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.macro __ptrauth_keys_install_user tsk, tmp1, tmp2, tmp3
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mov \tmp1, #THREAD_KEYS_USER
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add \tmp1, \tsk, \tmp1
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ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_USER_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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.endm
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.macro __ptrauth_keys_init_cpu tsk, tmp1, tmp2, tmp3
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mrs \tmp1, id_aa64isar1_el1
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ubfx \tmp1, \tmp1, #ID_AA64ISAR1_EL1_APA_SHIFT, #8
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mrs_s \tmp2, SYS_ID_AA64ISAR2_EL1
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ubfx \tmp2, \tmp2, #ID_AA64ISAR2_EL1_APA3_SHIFT, #4
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orr \tmp1, \tmp1, \tmp2
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cbz \tmp1, .Lno_addr_auth\@
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mov_q \tmp1, (SCTLR_ELx_ENIA | SCTLR_ELx_ENIB | \
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SCTLR_ELx_ENDA | SCTLR_ELx_ENDB)
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mrs \tmp2, sctlr_el1
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orr \tmp2, \tmp2, \tmp1
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msr sctlr_el1, \tmp2
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__ptrauth_keys_install_kernel_nosync \tsk, \tmp1, \tmp2, \tmp3
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isb
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.Lno_addr_auth\@:
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.endm
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.macro ptrauth_keys_init_cpu tsk, tmp1, tmp2, tmp3
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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_keys_init_cpu \tsk, \tmp1, \tmp2, \tmp3
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.Lno_addr_auth\@:
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.endm
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#else /* !CONFIG_ARM64_PTR_AUTH */
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.macro ptrauth_keys_install_user tsk, tmp1, tmp2, tmp3
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.endm
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#endif /* CONFIG_ARM64_PTR_AUTH */
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#endif /* __ASM_ASM_POINTER_AUTH_H */
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