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650701e4ea
The value of POR_EL0_INIT is not architectural, it is a software decision. Since we have a dedicated header for POR_ELx, we might as well define POR_EL0_INIT there. While at it also define POR_EL0_INIT using POR_ELx_PERM_PREP(), making it clearer that we are setting permissions for POIndex/pkey 0. Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com> Link: https://lore.kernel.org/r/20250219164029.2309119-4-kevin.brodsky@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
34 lines
612 B
C
34 lines
612 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2023 Arm Ltd.
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*/
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#ifndef _ASM_ARM64_POR_H
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#define _ASM_ARM64_POR_H
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#include <asm/sysreg.h>
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#define POR_EL0_INIT POR_ELx_PERM_PREP(0, POE_RWX)
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static inline bool por_elx_allows_read(u64 por, u8 pkey)
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{
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u8 perm = POR_ELx_PERM_GET(pkey, por);
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return perm & POE_R;
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}
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static inline bool por_elx_allows_write(u64 por, u8 pkey)
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{
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u8 perm = POR_ELx_PERM_GET(pkey, por);
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return perm & POE_W;
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}
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static inline bool por_elx_allows_exec(u64 por, u8 pkey)
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{
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u8 perm = POR_ELx_PERM_GET(pkey, por);
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return perm & POE_X;
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}
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#endif /* _ASM_ARM64_POR_H */
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