1/* SPDX-License-Identifier: GPL-2.0 */
2/* ld script to make s390 Linux kernel
3 * Written by Martin Schwidefsky (schwidefsky@de.ibm.com)
4 */
5
6#include <asm/thread_info.h>
7#include <asm/page.h>
8#include <asm/ftrace.lds.h>
9
10/*
11 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
12 * make sure it has 16k alignment.
13 */
14#define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir) \
15			   *(.bss..invalid_pg_dir)
16
17/* Handle ro_after_init data on our own. */
18#define RO_AFTER_INIT_DATA
19
20#define EMITS_PT_NOTE
21
22#include <asm-generic/vmlinux.lds.h>
23#include <asm/vmlinux.lds.h>
24
25OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
26OUTPUT_ARCH(s390:64-bit)
27ENTRY(startup_continue)
28jiffies = jiffies_64;
29
30PHDRS {
31	text PT_LOAD FLAGS(5);	/* R_E */
32	data PT_LOAD FLAGS(7);	/* RWE */
33	note PT_NOTE FLAGS(0);	/* ___ */
34}
35
36SECTIONS
37{
38	. = 0x100000;
39	.text : {
40		_stext = .;		/* Start of text section */
41		_text = .;		/* Text and read-only data */
42		HEAD_TEXT
43		TEXT_TEXT
44		SCHED_TEXT
45		CPUIDLE_TEXT
46		LOCK_TEXT
47		KPROBES_TEXT
48		IRQENTRY_TEXT
49		SOFTIRQENTRY_TEXT
50		FTRACE_HOTPATCH_TRAMPOLINES_TEXT
51		*(.text.*_indirect_*)
52		*(.gnu.warning)
53		. = ALIGN(PAGE_SIZE);
54		_etext = .;		/* End of text section */
55	} :text = 0x0700
56
57	RO_DATA(PAGE_SIZE)
58
59	. = ALIGN(PAGE_SIZE);
60	_sdata = .;		/* Start of data section */
61
62	. = ALIGN(PAGE_SIZE);
63	__start_ro_after_init = .;
64	.data..ro_after_init : {
65		 *(.data..ro_after_init)
66		JUMP_TABLE_DATA
67	} :data
68	EXCEPTION_TABLE(16)
69	. = ALIGN(PAGE_SIZE);
70	__end_ro_after_init = .;
71
72	RW_DATA(0x100, PAGE_SIZE, THREAD_SIZE)
73	BOOT_DATA_PRESERVED
74
75	. = ALIGN(8);
76	.amode31.refs : {
77		_start_amode31_refs = .;
78		*(.amode31.refs)
79		_end_amode31_refs = .;
80	}
81
82	. = ALIGN(PAGE_SIZE);
83	_edata = .;		/* End of data section */
84
85	/* will be freed after init */
86	. = ALIGN(PAGE_SIZE);	/* Init code and data */
87	__init_begin = .;
88
89	. = ALIGN(PAGE_SIZE);
90	.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
91		_sinittext = .;
92		INIT_TEXT
93		. = ALIGN(PAGE_SIZE);
94		_einittext = .;
95	}
96
97	/*
98	 * .exit.text is discarded at runtime, not link time,
99	 * to deal with references from __bug_table
100	*/
101	.exit.text : {
102		EXIT_TEXT
103	}
104
105	.exit.data : {
106		EXIT_DATA
107	}
108
109	/*
110	 * struct alt_inst entries. From the header (alternative.h):
111	 * "Alternative instructions for different CPU types or capabilities"
112	 * Think locking instructions on spinlocks.
113	 * Note, that it is a part of __init region.
114	 */
115	. = ALIGN(8);
116	.altinstructions : {
117		__alt_instructions = .;
118		*(.altinstructions)
119		__alt_instructions_end = .;
120	}
121
122	/*
123	 * And here are the replacement instructions. The linker sticks
124	 * them as binary blobs. The .altinstructions has enough data to
125	 * get the address and the length of them to patch the kernel safely.
126	 * Note, that it is a part of __init region.
127	 */
128	.altinstr_replacement : {
129		*(.altinstr_replacement)
130	}
131
132	/*
133	 * Table with the patch locations to undo expolines
134	*/
135	. = ALIGN(4);
136	.nospec_call_table : {
137		__nospec_call_start = . ;
138		*(.s390_indirect*)
139		__nospec_call_end = . ;
140	}
141	.nospec_return_table : {
142		__nospec_return_start = . ;
143		*(.s390_return*)
144		__nospec_return_end = . ;
145	}
146
147	BOOT_DATA
148
149	/*
150	 * .amode31 section for code, data, ex_table that need to stay
151	 * below 2 GB, even when the kernel is relocated above 2 GB.
152	 */
153	. = ALIGN(PAGE_SIZE);
154	_samode31 = .;
155	.amode31.text : {
156		_stext_amode31 = .;
157		*(.amode31.text)
158		*(.amode31.text.*_indirect_*)
159		. = ALIGN(PAGE_SIZE);
160		_etext_amode31 = .;
161	}
162	. = ALIGN(16);
163	.amode31.ex_table : {
164		_start_amode31_ex_table = .;
165		KEEP(*(.amode31.ex_table))
166		_stop_amode31_ex_table = .;
167	}
168	. = ALIGN(PAGE_SIZE);
169	.amode31.data : {
170		*(.amode31.data)
171	}
172	. = ALIGN(PAGE_SIZE);
173	_eamode31 = .;
174
175	/* early.c uses stsi, which requires page aligned data. */
176	. = ALIGN(PAGE_SIZE);
177	INIT_DATA_SECTION(0x100)
178
179	PERCPU_SECTION(0x100)
180
181	.dynsym ALIGN(8) : {
182		__dynsym_start = .;
183		*(.dynsym)
184		__dynsym_end = .;
185	}
186	.rela.dyn ALIGN(8) : {
187		__rela_dyn_start = .;
188		*(.rela*)
189		__rela_dyn_end = .;
190	}
191
192	. = ALIGN(PAGE_SIZE);
193	__init_end = .;		/* freed after init ends here */
194
195	BSS_SECTION(PAGE_SIZE, 4 * PAGE_SIZE, PAGE_SIZE)
196
197	. = ALIGN(PAGE_SIZE);
198	_end = . ;
199
200	/*
201	 * uncompressed image info used by the decompressor
202	 * it should match struct vmlinux_info
203	 */
204	.vmlinux.info 0 (INFO) : {
205		QUAD(_stext)					/* default_lma */
206		QUAD(startup_continue)				/* entry */
207		QUAD(__bss_start - _stext)			/* image_size */
208		QUAD(__bss_stop - __bss_start)			/* bss_size */
209		QUAD(__boot_data_start)				/* bootdata_off */
210		QUAD(__boot_data_end - __boot_data_start)	/* bootdata_size */
211		QUAD(__boot_data_preserved_start)		/* bootdata_preserved_off */
212		QUAD(__boot_data_preserved_end -
213		     __boot_data_preserved_start)		/* bootdata_preserved_size */
214		QUAD(__dynsym_start)				/* dynsym_start */
215		QUAD(__rela_dyn_start)				/* rela_dyn_start */
216		QUAD(__rela_dyn_end)				/* rela_dyn_end */
217		QUAD(_eamode31 - _samode31)			/* amode31_size */
218	} :NONE
219
220	/* Debugging sections.	*/
221	STABS_DEBUG
222	DWARF_DEBUG
223	ELF_DETAILS
224
225	/* Sections to be discarded */
226	DISCARDS
227	/DISCARD/ : {
228		*(.eh_frame)
229	}
230}
231