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 }