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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_ASM_POINTER_AUTH_H
#define __ASM_ASM_POINTER_AUTH_H
#include <asm/alternative.h>
#include <asm/asm-offsets.h>
#include <asm/cpufeature.h>
#include <asm/sysreg.h>
#ifdef CONFIG_ARM64_PTR_AUTH
/*
* thread.keys_user.ap* as offset exceeds the #imm offset range
* so use the base value of ldp as thread.keys_user and offset as
* thread.keys_user.ap*.
*/
.macro ptrauth_keys_install_user tsk, tmp1, tmp2, tmp3
mov \tmp1, #THREAD_KEYS_USER
add \tmp1, \tsk, \tmp1
alternative_if_not ARM64_HAS_ADDRESS_AUTH
b .Laddr_auth_skip_\@
alternative_else_nop_endif
ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_USER_KEY_APIA]
msr_s SYS_APIAKEYLO_EL1, \tmp2
msr_s SYS_APIAKEYHI_EL1, \tmp3
ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_USER_KEY_APIB]
msr_s SYS_APIBKEYLO_EL1, \tmp2
msr_s SYS_APIBKEYHI_EL1, \tmp3
ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_USER_KEY_APDA]
msr_s SYS_APDAKEYLO_EL1, \tmp2
msr_s SYS_APDAKEYHI_EL1, \tmp3
ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_USER_KEY_APDB]
msr_s SYS_APDBKEYLO_EL1, \tmp2
msr_s SYS_APDBKEYHI_EL1, \tmp3
.Laddr_auth_skip_\@:
alternative_if ARM64_HAS_GENERIC_AUTH
ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_USER_KEY_APGA]
msr_s SYS_APGAKEYLO_EL1, \tmp2
msr_s SYS_APGAKEYHI_EL1, \tmp3
alternative_else_nop_endif
.endm
.macro ptrauth_keys_install_kernel tsk, sync, tmp1, tmp2, tmp3
alternative_if ARM64_HAS_ADDRESS_AUTH
mov \tmp1, #THREAD_KEYS_KERNEL
add \tmp1, \tsk, \tmp1
ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_KERNEL_KEY_APIA]
msr_s SYS_APIAKEYLO_EL1, \tmp2
msr_s SYS_APIAKEYHI_EL1, \tmp3
.if \sync == 1
isb
.endif
alternative_else_nop_endif
.endm
#else /* CONFIG_ARM64_PTR_AUTH */
.macro ptrauth_keys_install_user tsk, tmp1, tmp2, tmp3
.endm
.macro ptrauth_keys_install_kernel tsk, sync, tmp1, tmp2, tmp3
.endm
#endif /* CONFIG_ARM64_PTR_AUTH */
#endif /* __ASM_ASM_POINTER_AUTH_H */
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