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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#define RO_EXCEPTION_TABLE_ALIGN 16
18
19/* Handle ro_after_init data on our own. */
20#define RO_AFTER_INIT_DATA
21
22#define RUNTIME_DISCARD_EXIT
23
24#define EMITS_PT_NOTE
25
26#include <asm-generic/vmlinux.lds.h>
27#include <asm/vmlinux.lds.h>
28
29OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
30OUTPUT_ARCH(s390:64-bit)
31ENTRY(startup_continue)
32jiffies = jiffies_64;
33
34PHDRS {
35 text PT_LOAD FLAGS(5); /* R_E */
36 data PT_LOAD FLAGS(7); /* RWE */
37 note PT_NOTE FLAGS(0); /* ___ */
38}
39
40SECTIONS
41{
42 . = 0x100000;
43 .text : {
44 _stext = .; /* Start of text section */
45 _text = .; /* Text and read-only data */
46 HEAD_TEXT
47 TEXT_TEXT
48 SCHED_TEXT
49 LOCK_TEXT
50 KPROBES_TEXT
51 IRQENTRY_TEXT
52 SOFTIRQENTRY_TEXT
53 FTRACE_HOTPATCH_TRAMPOLINES_TEXT
54 *(.text.*_indirect_*)
55 *(.fixup)
56 *(.gnu.warning)
57 . = ALIGN(PAGE_SIZE);
58 _etext = .; /* End of text section */
59 } :text = 0x0700
60
61 RO_DATA(PAGE_SIZE)
62
63 . = ALIGN(PAGE_SIZE);
64 _sdata = .; /* Start of data section */
65
66 . = ALIGN(PAGE_SIZE);
67 __start_ro_after_init = .;
68 .data..ro_after_init : {
69 *(.data..ro_after_init)
70 JUMP_TABLE_DATA
71 } :data
72 . = ALIGN(PAGE_SIZE);
73 __end_ro_after_init = .;
74
75 RW_DATA(0x100, PAGE_SIZE, THREAD_SIZE)
76 BOOT_DATA_PRESERVED
77
78 . = ALIGN(8);
79 .amode31.refs : {
80 _start_amode31_refs = .;
81 *(.amode31.refs)
82 _end_amode31_refs = .;
83 }
84
85 . = ALIGN(PAGE_SIZE);
86 _edata = .; /* End of data section */
87
88 /* will be freed after init */
89 . = ALIGN(PAGE_SIZE); /* Init code and data */
90 __init_begin = .;
91
92 . = ALIGN(PAGE_SIZE);
93 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
94 _sinittext = .;
95 INIT_TEXT
96 . = ALIGN(PAGE_SIZE);
97 _einittext = .;
98 }
99
100 /*
101 * .exit.text is discarded at runtime, not link time,
102 * to deal with references from __bug_table
103 */
104 .exit.text : {
105 EXIT_TEXT
106 }
107
108 .exit.data : {
109 EXIT_DATA
110 }
111
112 /*
113 * struct alt_inst entries. From the header (alternative.h):
114 * "Alternative instructions for different CPU types or capabilities"
115 * Think locking instructions on spinlocks.
116 * Note, that it is a part of __init region.
117 */
118 . = ALIGN(8);
119 .altinstructions : {
120 __alt_instructions = .;
121 *(.altinstructions)
122 __alt_instructions_end = .;
123 }
124
125 /*
126 * And here are the replacement instructions. The linker sticks
127 * them as binary blobs. The .altinstructions has enough data to
128 * get the address and the length of them to patch the kernel safely.
129 * Note, that it is a part of __init region.
130 */
131 .altinstr_replacement : {
132 *(.altinstr_replacement)
133 }
134
135 /*
136 * Table with the patch locations to undo expolines
137 */
138 . = ALIGN(4);
139 .nospec_call_table : {
140 __nospec_call_start = . ;
141 *(.s390_indirect*)
142 __nospec_call_end = . ;
143 }
144 .nospec_return_table : {
145 __nospec_return_start = . ;
146 *(.s390_return*)
147 __nospec_return_end = . ;
148 }
149
150 BOOT_DATA
151
152 /*
153 * .amode31 section for code, data, ex_table that need to stay
154 * below 2 GB, even when the kernel is relocated above 2 GB.
155 */
156 . = ALIGN(PAGE_SIZE);
157 _samode31 = .;
158 .amode31.text : {
159 _stext_amode31 = .;
160 *(.amode31.text)
161 *(.amode31.text.*_indirect_*)
162 . = ALIGN(PAGE_SIZE);
163 _etext_amode31 = .;
164 }
165 . = ALIGN(16);
166 .amode31.ex_table : {
167 _start_amode31_ex_table = .;
168 KEEP(*(.amode31.ex_table))
169 _stop_amode31_ex_table = .;
170 }
171 . = ALIGN(PAGE_SIZE);
172 .amode31.data : {
173 *(.amode31.data)
174 }
175 . = ALIGN(PAGE_SIZE);
176 _eamode31 = .;
177
178 /* early.c uses stsi, which requires page aligned data. */
179 . = ALIGN(PAGE_SIZE);
180 INIT_DATA_SECTION(0x100)
181
182 PERCPU_SECTION(0x100)
183
184 .dynsym ALIGN(8) : {
185 __dynsym_start = .;
186 *(.dynsym)
187 __dynsym_end = .;
188 }
189 .rela.dyn ALIGN(8) : {
190 __rela_dyn_start = .;
191 *(.rela*)
192 __rela_dyn_end = .;
193 }
194
195 . = ALIGN(PAGE_SIZE);
196 __init_end = .; /* freed after init ends here */
197
198 BSS_SECTION(PAGE_SIZE, 4 * PAGE_SIZE, PAGE_SIZE)
199
200 . = ALIGN(PAGE_SIZE);
201 _end = . ;
202
203 /*
204 * uncompressed image info used by the decompressor
205 * it should match struct vmlinux_info
206 */
207 .vmlinux.info 0 (INFO) : {
208 QUAD(_stext) /* default_lma */
209 QUAD(startup_continue) /* entry */
210 QUAD(__bss_start - _stext) /* image_size */
211 QUAD(__bss_stop - __bss_start) /* bss_size */
212 QUAD(__boot_data_start) /* bootdata_off */
213 QUAD(__boot_data_end - __boot_data_start) /* bootdata_size */
214 QUAD(__boot_data_preserved_start) /* bootdata_preserved_off */
215 QUAD(__boot_data_preserved_end -
216 __boot_data_preserved_start) /* bootdata_preserved_size */
217 QUAD(__dynsym_start) /* dynsym_start */
218 QUAD(__rela_dyn_start) /* rela_dyn_start */
219 QUAD(__rela_dyn_end) /* rela_dyn_end */
220 QUAD(_eamode31 - _samode31) /* amode31_size */
221 QUAD(init_mm)
222 QUAD(swapper_pg_dir)
223 QUAD(invalid_pg_dir)
224#ifdef CONFIG_KASAN
225 QUAD(kasan_early_shadow_page)
226 QUAD(kasan_early_shadow_pte)
227 QUAD(kasan_early_shadow_pmd)
228 QUAD(kasan_early_shadow_pud)
229 QUAD(kasan_early_shadow_p4d)
230#endif
231 } :NONE
232
233 /* Debugging sections. */
234 STABS_DEBUG
235 DWARF_DEBUG
236 ELF_DETAILS
237
238 /* Sections to be discarded */
239 DISCARDS
240 /DISCARD/ : {
241 *(.eh_frame)
242 *(.interp)
243 }
244}
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
9/*
10 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
11 * make sure it has 16k alignment.
12 */
13#define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
14
15/* Handle ro_after_init data on our own. */
16#define RO_AFTER_INIT_DATA
17
18#define EMITS_PT_NOTE
19
20#include <asm-generic/vmlinux.lds.h>
21#include <asm/vmlinux.lds.h>
22
23OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
24OUTPUT_ARCH(s390:64-bit)
25ENTRY(startup_continue)
26jiffies = jiffies_64;
27
28PHDRS {
29 text PT_LOAD FLAGS(5); /* R_E */
30 data PT_LOAD FLAGS(7); /* RWE */
31 note PT_NOTE FLAGS(0); /* ___ */
32}
33
34SECTIONS
35{
36 . = 0x100000;
37 .text : {
38 _stext = .; /* Start of text section */
39 _text = .; /* Text and read-only data */
40 HEAD_TEXT
41 TEXT_TEXT
42 SCHED_TEXT
43 CPUIDLE_TEXT
44 LOCK_TEXT
45 KPROBES_TEXT
46 IRQENTRY_TEXT
47 SOFTIRQENTRY_TEXT
48 *(.text.*_indirect_*)
49 *(.fixup)
50 *(.gnu.warning)
51 . = ALIGN(PAGE_SIZE);
52 _etext = .; /* End of text section */
53 } :text = 0x0700
54
55 RO_DATA(PAGE_SIZE)
56
57 . = ALIGN(PAGE_SIZE);
58 _sdata = .; /* Start of data section */
59
60 . = ALIGN(PAGE_SIZE);
61 __start_ro_after_init = .;
62 .data..ro_after_init : {
63 *(.data..ro_after_init)
64 JUMP_TABLE_DATA
65 } :data
66 EXCEPTION_TABLE(16)
67 . = ALIGN(PAGE_SIZE);
68 __end_ro_after_init = .;
69
70 RW_DATA(0x100, PAGE_SIZE, THREAD_SIZE)
71 BOOT_DATA_PRESERVED
72
73 _edata = .; /* End of data section */
74
75 /* will be freed after init */
76 . = ALIGN(PAGE_SIZE); /* Init code and data */
77 __init_begin = .;
78
79 . = ALIGN(PAGE_SIZE);
80 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
81 _sinittext = .;
82 INIT_TEXT
83 . = ALIGN(PAGE_SIZE);
84 _einittext = .;
85 }
86
87 /*
88 * .exit.text is discarded at runtime, not link time,
89 * to deal with references from __bug_table
90 */
91 .exit.text : {
92 EXIT_TEXT
93 }
94
95 .exit.data : {
96 EXIT_DATA
97 }
98
99 /*
100 * struct alt_inst entries. From the header (alternative.h):
101 * "Alternative instructions for different CPU types or capabilities"
102 * Think locking instructions on spinlocks.
103 * Note, that it is a part of __init region.
104 */
105 . = ALIGN(8);
106 .altinstructions : {
107 __alt_instructions = .;
108 *(.altinstructions)
109 __alt_instructions_end = .;
110 }
111
112 /*
113 * And here are the replacement instructions. The linker sticks
114 * them as binary blobs. The .altinstructions has enough data to
115 * get the address and the length of them to patch the kernel safely.
116 * Note, that it is a part of __init region.
117 */
118 .altinstr_replacement : {
119 *(.altinstr_replacement)
120 }
121
122 /*
123 * Table with the patch locations to undo expolines
124 */
125 .nospec_call_table : {
126 __nospec_call_start = . ;
127 *(.s390_indirect*)
128 __nospec_call_end = . ;
129 }
130 .nospec_return_table : {
131 __nospec_return_start = . ;
132 *(.s390_return*)
133 __nospec_return_end = . ;
134 }
135
136 BOOT_DATA
137
138 /* early.c uses stsi, which requires page aligned data. */
139 . = ALIGN(PAGE_SIZE);
140 INIT_DATA_SECTION(0x100)
141
142 PERCPU_SECTION(0x100)
143
144 .dynsym ALIGN(8) : {
145 __dynsym_start = .;
146 *(.dynsym)
147 __dynsym_end = .;
148 }
149 .rela.dyn ALIGN(8) : {
150 __rela_dyn_start = .;
151 *(.rela*)
152 __rela_dyn_end = .;
153 }
154
155 . = ALIGN(PAGE_SIZE);
156 __init_end = .; /* freed after init ends here */
157
158 BSS_SECTION(PAGE_SIZE, 4 * PAGE_SIZE, PAGE_SIZE)
159
160 _end = . ;
161
162 /*
163 * uncompressed image info used by the decompressor
164 * it should match struct vmlinux_info
165 */
166 .vmlinux.info 0 (INFO) : {
167 QUAD(_stext) /* default_lma */
168 QUAD(startup_continue) /* entry */
169 QUAD(__bss_start - _stext) /* image_size */
170 QUAD(__bss_stop - __bss_start) /* bss_size */
171 QUAD(__boot_data_start) /* bootdata_off */
172 QUAD(__boot_data_end - __boot_data_start) /* bootdata_size */
173 QUAD(__boot_data_preserved_start) /* bootdata_preserved_off */
174 QUAD(__boot_data_preserved_end -
175 __boot_data_preserved_start) /* bootdata_preserved_size */
176 QUAD(__dynsym_start) /* dynsym_start */
177 QUAD(__rela_dyn_start) /* rela_dyn_start */
178 QUAD(__rela_dyn_end) /* rela_dyn_end */
179 } :NONE
180
181 /* Debugging sections. */
182 STABS_DEBUG
183 DWARF_DEBUG
184
185 /* Sections to be discarded */
186 DISCARDS
187 /DISCARD/ : {
188 *(.eh_frame)
189 }
190}