1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/alternative.h b/arch/arm64/include/asm/alternative.h
new file mode 100644
index 000000000..00d97b8a7
--- /dev/null
+++ b/arch/arm64/include/asm/alternative.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_ALTERNATIVE_H
+#define __ASM_ALTERNATIVE_H
+
+#include <asm/alternative-macros.h>
+
+#ifndef __ASSEMBLY__
+
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/stddef.h>
+
+struct alt_instr {
+	s32 orig_offset;	/* offset to original instruction */
+	s32 alt_offset;		/* offset to replacement instruction */
+	u16 cpucap;		/* cpucap bit set for replacement */
+	u8  orig_len;		/* size of original instruction(s) */
+	u8  alt_len;		/* size of new instruction(s), <= orig_len */
+};
+
+typedef void (*alternative_cb_t)(struct alt_instr *alt,
+				 __le32 *origptr, __le32 *updptr, int nr_inst);
+
+void __init apply_boot_alternatives(void);
+void __init apply_alternatives_all(void);
+bool alternative_is_applied(u16 cpucap);
+
+#ifdef CONFIG_MODULES
+void apply_alternatives_module(void *start, size_t length);
+#else
+static inline void apply_alternatives_module(void *start, size_t length) { }
+#endif
+
+void alt_cb_patch_nops(struct alt_instr *alt, __le32 *origptr,
+		       __le32 *updptr, int nr_inst);
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ASM_ALTERNATIVE_H */