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1/* ld script to make s390 Linux kernel
2 * Written by Martin Schwidefsky (schwidefsky@de.ibm.com)
3 */
4
5#include <asm/thread_info.h>
6#include <asm/page.h>
7#include <asm-generic/vmlinux.lds.h>
8
9#ifndef CONFIG_64BIT
10OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390")
11OUTPUT_ARCH(s390)
12ENTRY(_start)
13jiffies = jiffies_64 + 4;
14#else
15OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
16OUTPUT_ARCH(s390:64-bit)
17ENTRY(_start)
18jiffies = jiffies_64;
19#endif
20
21PHDRS {
22 text PT_LOAD FLAGS(5); /* R_E */
23 data PT_LOAD FLAGS(7); /* RWE */
24 note PT_NOTE FLAGS(0); /* ___ */
25}
26
27SECTIONS
28{
29 . = 0x00000000;
30 .text : {
31 _text = .; /* Text and read-only data */
32 HEAD_TEXT
33 TEXT_TEXT
34 SCHED_TEXT
35 LOCK_TEXT
36 KPROBES_TEXT
37 IRQENTRY_TEXT
38 *(.fixup)
39 *(.gnu.warning)
40 } :text = 0x0700
41
42 _etext = .; /* End of text section */
43
44 NOTES :text :note
45
46 RODATA
47
48#ifdef CONFIG_SHARED_KERNEL
49 . = ALIGN(0x100000); /* VM shared segments are 1MB aligned */
50#endif
51
52 . = ALIGN(PAGE_SIZE);
53 _eshared = .; /* End of shareable data */
54 _sdata = .; /* Start of data section */
55
56 EXCEPTION_TABLE(16) :data
57
58 RW_DATA_SECTION(0x100, PAGE_SIZE, THREAD_SIZE)
59
60 _edata = .; /* End of data section */
61
62 /* will be freed after init */
63 . = ALIGN(PAGE_SIZE); /* Init code and data */
64 __init_begin = .;
65
66 INIT_TEXT_SECTION(PAGE_SIZE)
67
68 /*
69 * .exit.text is discarded at runtime, not link time,
70 * to deal with references from __bug_table
71 */
72 .exit.text : {
73 EXIT_TEXT
74 }
75
76 /* early.c uses stsi, which requires page aligned data. */
77 . = ALIGN(PAGE_SIZE);
78 INIT_DATA_SECTION(0x100)
79
80 PERCPU_SECTION(0x100)
81 . = ALIGN(PAGE_SIZE);
82 __init_end = .; /* freed after init ends here */
83
84 BSS_SECTION(0, 2, 0)
85
86 _end = . ;
87
88 /* Debugging sections. */
89 STABS_DEBUG
90 DWARF_DEBUG
91
92 /* Sections to be discarded */
93 DISCARDS
94}
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}