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 	}
34