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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2021 Sifive.
4 */
5
6#ifndef __ASM_ALTERNATIVE_H
7#define __ASM_ALTERNATIVE_H
8
9#define ERRATA_STRING_LENGTH_MAX 32
10
11#include <asm/alternative-macros.h>
12
13#ifndef __ASSEMBLY__
14
15#include <linux/init.h>
16#include <linux/types.h>
17#include <linux/stddef.h>
18#include <asm/hwcap.h>
19
20void __init apply_boot_alternatives(void);
21
22struct alt_entry {
23 void *old_ptr; /* address of original instruciton or data */
24 void *alt_ptr; /* address of replacement instruction or data */
25 unsigned long vendor_id; /* cpu vendor id */
26 unsigned long alt_len; /* The replacement size */
27 unsigned int errata_id; /* The errata id */
28} __packed;
29
30struct errata_checkfunc_id {
31 unsigned long vendor_id;
32 bool (*func)(struct alt_entry *alt);
33};
34
35void sifive_errata_patch_func(struct alt_entry *begin, struct alt_entry *end,
36 unsigned long archid, unsigned long impid);
37
38#endif
39#endif