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-rw-r--r--arch/arm64/kernel/image-vars.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm64/kernel/image-vars.h b/arch/arm64/kernel/image-vars.h
new file mode 100644
index 000000000000..25a2a9b479c2
--- /dev/null
+++ b/arch/arm64/kernel/image-vars.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Linker script variables to be set after section resolution, as
+ * ld.lld does not like variables assigned before SECTIONS is processed.
+ */
+#ifndef __ARM64_KERNEL_IMAGE_VARS_H
+#define __ARM64_KERNEL_IMAGE_VARS_H
+
+#ifndef LINKER_SCRIPT
+#error This file should only be included in vmlinux.lds.S
+#endif
+
+#ifdef CONFIG_EFI
+
+__efistub_stext_offset = stext - _text;
+
+/*
+ * The EFI stub has its own symbol namespace prefixed by __efistub_, to
+ * isolate it from the kernel proper. The following symbols are legally
+ * accessed by the stub, so provide some aliases to make them accessible.
+ * Only include data symbols here, or text symbols of functions that are
+ * guaranteed to be safe when executed at another offset than they were
+ * linked at. The routines below are all implemented in assembler in a
+ * position independent manner
+ */
+__efistub_memcmp = __pi_memcmp;
+__efistub_memchr = __pi_memchr;
+__efistub_memcpy = __pi_memcpy;
+__efistub_memmove = __pi_memmove;
+__efistub_memset = __pi_memset;
+__efistub_strlen = __pi_strlen;
+__efistub_strnlen = __pi_strnlen;
+__efistub_strcmp = __pi_strcmp;
+__efistub_strncmp = __pi_strncmp;
+__efistub_strrchr = __pi_strrchr;
+__efistub___flush_dcache_area = __pi___flush_dcache_area;
+
+#ifdef CONFIG_KASAN
+__efistub___memcpy = __pi_memcpy;
+__efistub___memmove = __pi_memmove;
+__efistub___memset = __pi_memset;
+#endif
+
+__efistub__text = _text;
+__efistub__end = _end;
+__efistub__edata = _edata;
+__efistub_screen_info = screen_info;
+
+#endif
+
+#endif /* __ARM64_KERNEL_IMAGE_VARS_H */