arch/s390/include/asm/sections.h

   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
   9 extern bool initmem_freed;
  10
  11 static 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
  38 extern unsigned long __sdma, __edma;
  39 extern unsigned long __stext_dma, __etext_dma;
  40
  41 #endif