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