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1/* SPDX-License-Identifier: GPL-2.0 */
2/* ld script to make ARM Linux kernel
3 * taken from the i386 version by Russell King
4 * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
5 */
6
7#ifdef CONFIG_XIP_KERNEL
8#include "vmlinux-xip.lds.S"
9#else
10
11#include <linux/pgtable.h>
12#include <asm-generic/vmlinux.lds.h>
13#include <asm/cache.h>
14#include <asm/thread_info.h>
15#include <asm/memory.h>
16#include <asm/mpu.h>
17#include <asm/page.h>
18
19#include "vmlinux.lds.h"
20
21OUTPUT_ARCH(arm)
22ENTRY(stext)
23
24#ifndef __ARMEB__
25jiffies = jiffies_64;
26#else
27jiffies = jiffies_64 + 4;
28#endif
29
30SECTIONS
31{
32 /*
33 * XXX: The linker does not define how output sections are
34 * assigned to input sections when there are multiple statements
35 * matching the same input section name. There is no documented
36 * order of matching.
37 *
38 * unwind exit sections must be discarded before the rest of the
39 * unwind sections get included.
40 */
41 /DISCARD/ : {
42 ARM_DISCARD
43#ifndef CONFIG_SMP_ON_UP
44 *(.alt.smp.init)
45#endif
46 }
47
48 . = PAGE_OFFSET + TEXT_OFFSET;
49 .head.text : {
50 _text = .;
51 HEAD_TEXT
52 }
53
54#ifdef CONFIG_STRICT_KERNEL_RWX
55 . = ALIGN(1<<SECTION_SHIFT);
56#endif
57
58#ifdef CONFIG_ARM_MPU
59 . = ALIGN(PMSAv8_MINALIGN);
60#endif
61 .text : { /* Real text segment */
62 _stext = .; /* Text and read-only data */
63 ARM_TEXT
64 }
65
66#ifdef CONFIG_DEBUG_ALIGN_RODATA
67 . = ALIGN(1<<SECTION_SHIFT);
68#endif
69 _etext = .; /* End of text section */
70
71 RO_DATA(PAGE_SIZE)
72
73 . = ALIGN(4);
74 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
75 __start___ex_table = .;
76 ARM_MMU_KEEP(*(__ex_table))
77 __stop___ex_table = .;
78 }
79
80#ifdef CONFIG_ARM_UNWIND
81 ARM_UNWIND_SECTIONS
82#endif
83
84#ifdef CONFIG_STRICT_KERNEL_RWX
85 . = ALIGN(1<<SECTION_SHIFT);
86#else
87 . = ALIGN(PAGE_SIZE);
88#endif
89 __init_begin = .;
90
91 ARM_VECTORS
92 INIT_TEXT_SECTION(8)
93 .exit.text : {
94 ARM_EXIT_KEEP(EXIT_TEXT)
95 }
96 .init.proc.info : {
97 ARM_CPU_DISCARD(PROC_INFO)
98 }
99 .init.arch.info : {
100 __arch_info_begin = .;
101 *(.arch.info.init)
102 __arch_info_end = .;
103 }
104 .init.tagtable : {
105 __tagtable_begin = .;
106 *(.taglist.init)
107 __tagtable_end = .;
108 }
109#ifdef CONFIG_SMP_ON_UP
110 .init.smpalt : {
111 __smpalt_begin = .;
112 *(.alt.smp.init)
113 __smpalt_end = .;
114 }
115#endif
116 .init.pv_table : {
117 __pv_table_begin = .;
118 *(.pv_table)
119 __pv_table_end = .;
120 }
121
122 INIT_DATA_SECTION(16)
123
124 .exit.data : {
125 ARM_EXIT_KEEP(EXIT_DATA)
126 }
127
128#ifdef CONFIG_SMP
129 PERCPU_SECTION(L1_CACHE_BYTES)
130#endif
131
132#ifdef CONFIG_HAVE_TCM
133 ARM_TCM
134#endif
135
136#ifdef CONFIG_STRICT_KERNEL_RWX
137 . = ALIGN(1<<SECTION_SHIFT);
138#else
139 . = ALIGN(THREAD_SIZE);
140#endif
141 __init_end = .;
142
143 _sdata = .;
144 RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
145 _edata = .;
146
147 BSS_SECTION(0, 0, 0)
148#ifdef CONFIG_ARM_MPU
149 . = ALIGN(PMSAv8_MINALIGN);
150#endif
151 _end = .;
152
153 STABS_DEBUG
154}
155
156#ifdef CONFIG_STRICT_KERNEL_RWX
157/*
158 * Without CONFIG_DEBUG_ALIGN_RODATA, __start_rodata_section_aligned will
159 * be the first section-aligned location after __start_rodata. Otherwise,
160 * it will be equal to __start_rodata.
161 */
162__start_rodata_section_aligned = ALIGN(__start_rodata, 1 << SECTION_SHIFT);
163#endif
164
165/*
166 * These must never be empty
167 * If you have to comment these two assert statements out, your
168 * binutils is too old (for other reasons as well)
169 */
170ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
171ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")
172
173#endif /* CONFIG_XIP_KERNEL */
1/* SPDX-License-Identifier: GPL-2.0 */
2/* ld script to make ARM Linux kernel
3 * taken from the i386 version by Russell King
4 * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
5 */
6
7#ifdef CONFIG_XIP_KERNEL
8#include "vmlinux-xip.lds.S"
9#else
10
11#include <linux/pgtable.h>
12#include <asm/vmlinux.lds.h>
13#include <asm/cache.h>
14#include <asm/thread_info.h>
15#include <asm/memory.h>
16#include <asm/mpu.h>
17#include <asm/page.h>
18
19OUTPUT_ARCH(arm)
20ENTRY(stext)
21
22#ifndef __ARMEB__
23jiffies = jiffies_64;
24#else
25jiffies = jiffies_64 + 4;
26#endif
27
28SECTIONS
29{
30 /*
31 * XXX: The linker does not define how output sections are
32 * assigned to input sections when there are multiple statements
33 * matching the same input section name. There is no documented
34 * order of matching.
35 *
36 * unwind exit sections must be discarded before the rest of the
37 * unwind sections get included.
38 */
39 /DISCARD/ : {
40 ARM_DISCARD
41#ifndef CONFIG_SMP_ON_UP
42 *(.alt.smp.init)
43#endif
44#ifndef CONFIG_ARM_UNWIND
45 *(.ARM.exidx) *(.ARM.exidx.*)
46 *(.ARM.extab) *(.ARM.extab.*)
47#endif
48 }
49
50 . = KERNEL_OFFSET + TEXT_OFFSET;
51 .head.text : {
52 _text = .;
53 HEAD_TEXT
54 }
55
56#ifdef CONFIG_STRICT_KERNEL_RWX
57 . = ALIGN(1<<SECTION_SHIFT);
58#endif
59
60#ifdef CONFIG_ARM_MPU
61 . = ALIGN(PMSAv8_MINALIGN);
62#endif
63 .text : { /* Real text segment */
64 _stext = .; /* Text and read-only data */
65 ARM_TEXT
66 }
67
68#ifdef CONFIG_DEBUG_ALIGN_RODATA
69 . = ALIGN(1<<SECTION_SHIFT);
70#endif
71 _etext = .; /* End of text section */
72
73 RO_DATA(PAGE_SIZE)
74
75 . = ALIGN(4);
76 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
77 __start___ex_table = .;
78 ARM_MMU_KEEP(*(__ex_table))
79 __stop___ex_table = .;
80 }
81
82#ifdef CONFIG_ARM_UNWIND
83 ARM_UNWIND_SECTIONS
84#endif
85
86#ifdef CONFIG_STRICT_KERNEL_RWX
87 . = ALIGN(1<<SECTION_SHIFT);
88#else
89 . = ALIGN(PAGE_SIZE);
90#endif
91 __init_begin = .;
92
93 ARM_VECTORS
94 INIT_TEXT_SECTION(8)
95 .exit.text : {
96 ARM_EXIT_KEEP(EXIT_TEXT)
97 }
98 .init.proc.info : {
99 ARM_CPU_DISCARD(PROC_INFO)
100 }
101 .init.arch.info : {
102 __arch_info_begin = .;
103 *(.arch.info.init)
104 __arch_info_end = .;
105 }
106 .init.tagtable : {
107 __tagtable_begin = .;
108 *(.taglist.init)
109 __tagtable_end = .;
110 }
111#ifdef CONFIG_SMP_ON_UP
112 .init.smpalt : {
113 __smpalt_begin = .;
114 *(.alt.smp.init)
115 __smpalt_end = .;
116 }
117#endif
118 .init.pv_table : {
119 __pv_table_begin = .;
120 *(.pv_table)
121 __pv_table_end = .;
122 }
123
124 INIT_DATA_SECTION(16)
125
126 .exit.data : {
127 ARM_EXIT_KEEP(EXIT_DATA)
128 }
129
130#ifdef CONFIG_SMP
131 PERCPU_SECTION(L1_CACHE_BYTES)
132#endif
133
134#ifdef CONFIG_HAVE_TCM
135 ARM_TCM
136#endif
137
138#ifdef CONFIG_STRICT_KERNEL_RWX
139 . = ALIGN(1<<SECTION_SHIFT);
140#else
141 . = ALIGN(THREAD_SIZE);
142#endif
143 __init_end = .;
144
145 _sdata = .;
146 RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
147 _edata = .;
148
149 BSS_SECTION(0, 0, 0)
150#ifdef CONFIG_ARM_MPU
151 . = ALIGN(PMSAv8_MINALIGN);
152#endif
153 _end = .;
154
155 STABS_DEBUG
156 DWARF_DEBUG
157 ARM_DETAILS
158
159 ARM_ASSERTS
160}
161
162#ifdef CONFIG_STRICT_KERNEL_RWX
163/*
164 * Without CONFIG_DEBUG_ALIGN_RODATA, __start_rodata_section_aligned will
165 * be the first section-aligned location after __start_rodata. Otherwise,
166 * it will be equal to __start_rodata.
167 */
168__start_rodata_section_aligned = ALIGN(__start_rodata, 1 << SECTION_SHIFT);
169#endif
170
171/*
172 * These must never be empty
173 * If you have to comment these two assert statements out, your
174 * binutils is too old (for other reasons as well)
175 */
176ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
177ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")
178
179#endif /* CONFIG_XIP_KERNEL */