arch/riscv/kernel/image-vars.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2020 Western Digital Corporation or its affiliates.
   4  * Linker script variables to be set after section resolution, as
   5  * ld.lld does not like variables assigned before SECTIONS is processed.
   6  * Based on arch/arm64/kerne/image-vars.h
   7  */
   8 #ifndef __RISCV_KERNEL_IMAGE_VARS_H
   9 #define __RISCV_KERNEL_IMAGE_VARS_H
  10
  11 #ifndef LINKER_SCRIPT
  12 #error This file should only be included in vmlinux.lds.S
  13 #endif
  14
  15 #ifdef CONFIG_EFI
  16
  17 /*
  18  * The EFI stub has its own symbol namespace prefixed by __efistub_, to
  19  * isolate it from the kernel proper. The following symbols are legally
  20  * accessed by the stub, so provide some aliases to make them accessible.
  21  * Only include data symbols here, or text symbols of functions that are
  22  * guaranteed to be safe when executed at another offset than they were
  23  * linked at. The routines below are all implemented in assembler in a
  24  * position independent manner
  25  */
  26 __efistub_memcmp                = memcmp;
  27 __efistub_memchr                = memchr;
  28 __efistub_memcpy                = memcpy;
  29 __efistub_memmove               = memmove;
  30 __efistub_memset                = memset;
  31 __efistub_strlen                = strlen;
  32 __efistub_strnlen               = strnlen;
  33 __efistub_strcmp                = strcmp;
  34 __efistub_strncmp               = strncmp;
  35 __efistub_strrchr               = strrchr;
  36
  37 #ifdef CONFIG_KASAN
  38 __efistub___memcpy              = memcpy;
  39 __efistub___memmove             = memmove;
  40 __efistub___memset              = memset;
  41 #endif
  42
  43 __efistub__start                = _start;
  44 __efistub__start_kernel         = _start_kernel;
  45 __efistub__end                  = _end;
  46 __efistub__edata                = _edata;
  47 __efistub_screen_info           = screen_info;
  48
  49 #endif
  50
  51 #endif /* __RISCV_KERNEL_IMAGE_VARS_H */