1a0e5dbd37
Add required ports of the Alternative scheme for SiFive. Signed-off-by: Vincent Chen <vincent.chen@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
40 lines
930 B
C
40 lines
930 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2021 Sifive.
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*/
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#ifndef __ASM_ALTERNATIVE_H
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#define __ASM_ALTERNATIVE_H
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#define ERRATA_STRING_LENGTH_MAX 32
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#include <asm/alternative-macros.h>
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#ifndef __ASSEMBLY__
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/stddef.h>
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#include <asm/hwcap.h>
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void __init apply_boot_alternatives(void);
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struct alt_entry {
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void *old_ptr; /* address of original instruciton or data */
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void *alt_ptr; /* address of replacement instruction or data */
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unsigned long vendor_id; /* cpu vendor id */
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unsigned long alt_len; /* The replacement size */
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unsigned int errata_id; /* The errata id */
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} __packed;
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struct errata_checkfunc_id {
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unsigned long vendor_id;
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bool (*func)(struct alt_entry *alt);
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};
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void sifive_errata_patch_func(struct alt_entry *begin, struct alt_entry *end,
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unsigned long archid, unsigned long impid);
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#endif
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#endif
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