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		*(.fixup)
53		*(.gnu.warning)
54		. = ALIGN(PAGE_SIZE);
55		_etext = .;		/* End of text section */
56	} :text = 0x0700
57
58	RO_DATA(PAGE_SIZE)
59
60	. = ALIGN(PAGE_SIZE);
61	_sdata = .;		/* Start of data section */
62
63	. = ALIGN(PAGE_SIZE);
64	__start_ro_after_init = .;
65	.data..ro_after_init : {
66		 *(.data..ro_after_init)
67		JUMP_TABLE_DATA
68	} :data
69	EXCEPTION_TABLE(16)
70	. = ALIGN(PAGE_SIZE);
71	__end_ro_after_init = .;
72
73	RW_DATA(0x100, PAGE_SIZE, THREAD_SIZE)
74	BOOT_DATA_PRESERVED
75
76	. = ALIGN(8);
77	.amode31.refs : {
78		_start_amode31_refs = .;
79		*(.amode31.refs)
80		_end_amode31_refs = .;
81	}
82
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	.nospec_call_table : {
136		__nospec_call_start = . ;
137		*(.s390_indirect*)
138		__nospec_call_end = . ;
139	}
140	.nospec_return_table : {
141		__nospec_return_start = . ;
142		*(.s390_return*)
143		__nospec_return_end = . ;
144	}
145
146	BOOT_DATA
147
148	/*
149	 * .amode31 section for code, data, ex_table that need to stay
150	 * below 2 GB, even when the kernel is relocated above 2 GB.
151	 */
152	. = ALIGN(PAGE_SIZE);
153	_samode31 = .;
154	.amode31.text : {
155		_stext_amode31 = .;
156		*(.amode31.text)
157		*(.amode31.text.*_indirect_*)
158		. = ALIGN(PAGE_SIZE);
159		_etext_amode31 = .;
160	}
161	. = ALIGN(16);
162	.amode31.ex_table : {
163		_start_amode31_ex_table = .;
164		KEEP(*(.amode31.ex_table))
165		_stop_amode31_ex_table = .;
166	}
167	. = ALIGN(PAGE_SIZE);
168	.amode31.data : {
169		*(.amode31.data)
170	}
171	. = ALIGN(PAGE_SIZE);
172	_eamode31 = .;
173
174	/* early.c uses stsi, which requires page aligned data. */
175	. = ALIGN(PAGE_SIZE);
176	INIT_DATA_SECTION(0x100)
177
178	PERCPU_SECTION(0x100)
179
180	.dynsym ALIGN(8) : {
181		__dynsym_start = .;
182		*(.dynsym)
183		__dynsym_end = .;
184	}
185	.rela.dyn ALIGN(8) : {
186		__rela_dyn_start = .;
187		*(.rela*)
188		__rela_dyn_end = .;
189	}
190
191	. = ALIGN(PAGE_SIZE);
192	__init_end = .;		/* freed after init ends here */
193
194	BSS_SECTION(PAGE_SIZE, 4 * PAGE_SIZE, PAGE_SIZE)
195
196	_end = . ;
197
198	/*
199	 * uncompressed image info used by the decompressor
200	 * it should match struct vmlinux_info
201	 */
202	.vmlinux.info 0 (INFO) : {
203		QUAD(_stext)					/* default_lma */
204		QUAD(startup_continue)				/* entry */
205		QUAD(__bss_start - _stext)			/* image_size */
206		QUAD(__bss_stop - __bss_start)			/* bss_size */
207		QUAD(__boot_data_start)				/* bootdata_off */
208		QUAD(__boot_data_end - __boot_data_start)	/* bootdata_size */
209		QUAD(__boot_data_preserved_start)		/* bootdata_preserved_off */
210		QUAD(__boot_data_preserved_end -
211		     __boot_data_preserved_start)		/* bootdata_preserved_size */
212		QUAD(__dynsym_start)				/* dynsym_start */
213		QUAD(__rela_dyn_start)				/* rela_dyn_start */
214		QUAD(__rela_dyn_end)				/* rela_dyn_end */
215		QUAD(_eamode31 - _samode31)			/* amode31_size */
216	} :NONE
217
218	/* Debugging sections.	*/
219	STABS_DEBUG
220	DWARF_DEBUG
221	ELF_DETAILS
222
223	/* Sections to be discarded */
224	DISCARDS
225	/DISCARD/ : {
226		*(.eh_frame)
227	}
228}
229