linux/arch/s390/include/asm/sections.h
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   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _S390_SECTIONS_H
   3#define _S390_SECTIONS_H
   4
   5#define arch_is_kernel_initmem_freed arch_is_kernel_initmem_freed
   6
   7#include <asm-generic/sections.h>
   8
   9extern bool initmem_freed;
  10
  11static inline int arch_is_kernel_initmem_freed(unsigned long addr)
  12{
  13        if (!initmem_freed)
  14                return 0;
  15        return addr >= (unsigned long)__init_begin &&
  16               addr < (unsigned long)__init_end;
  17}
  18
  19/*
  20 * .boot.data section contains variables "shared" between the decompressor and
  21 * the decompressed kernel. The decompressor will store values in them, and
  22 * copy over to the decompressed image before starting it.
  23 *
  24 * Each variable end up in its own intermediate section .boot.data.<var name>,
  25 * those sections are later sorted by alignment + name and merged together into
  26 * final .boot.data section, which should be identical in the decompressor and
  27 * the decompressed kernel (that is checked during the build).
  28 */
  29#define __bootdata(var) __section(".boot.data." #var) var
  30
  31/*
  32 * .boot.preserved.data is similar to .boot.data, but it is not part of the
  33 * .init section and thus will be preserved for later use in the decompressed
  34 * kernel.
  35 */
  36#define __bootdata_preserved(var) __section(".boot.preserved.data." #var) var
  37
  38extern unsigned long __sdma, __edma;
  39extern unsigned long __stext_dma, __etext_dma;
  40
  41#endif
  42