arch/s390/include/asm/vmlinux.lds.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #include <asm/page.h>
   3
   4 /*
   5  * .boot.data section is shared between the decompressor code and the
   6  * decompressed kernel. The decompressor will store values in it, and copy
   7  * over to the decompressed image before starting it.
   8  *
   9  * .boot.data variables are kept in separate .boot.data.<var name> sections,
  10  * which are sorted by alignment first, then by name before being merged
  11  * into single .boot.data section. This way big holes cased by page aligned
  12  * structs are avoided and linker produces consistent result.
  13  */
  14 #define BOOT_DATA                                                       \
  15         . = ALIGN(PAGE_SIZE);                                           \
  16         .boot.data : {                                                  \
  17                 __boot_data_start = .;                                  \
  18                 *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.boot.data*)))         \
  19                 __boot_data_end = .;                                    \
  20         }
  21
  22 /*
  23  * .boot.preserved.data is similar to .boot.data, but it is not part of the
  24  * .init section and thus will be preserved for later use in the decompressed
  25  * kernel.
  26  */
  27 #define BOOT_DATA_PRESERVED                                             \
  28         . = ALIGN(PAGE_SIZE);                                           \
  29         .boot.preserved.data : {                                        \
  30                 __boot_data_preserved_start = .;                        \
  31                 *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.boot.preserved.data*))) \
  32                 __boot_data_preserved_end = .;                          \
  33         }