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>
7 #ifdef CONFIG_XIP_KERNEL
8 #include "vmlinux-xip.lds.S"
11 #include <asm-generic/vmlinux.lds.h>
12 #include <asm/cache.h>
13 #include <asm/thread_info.h>
14 #include <asm/memory.h>
16 #include <asm/pgtable.h>
18 #include "vmlinux.lds.h"
26 jiffies = jiffies_64 + 4;
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
37 * unwind exit sections must be discarded before the rest of the
38 * unwind sections get included.
42 #ifndef CONFIG_SMP_ON_UP
47 . = PAGE_OFFSET + TEXT_OFFSET;
53 #ifdef CONFIG_STRICT_KERNEL_RWX
54 . = ALIGN(1<<SECTION_SHIFT);
57 .text : { /* Real text segment */
58 _stext = .; /* Text and read-only data */
62 #ifdef CONFIG_DEBUG_ALIGN_RODATA
63 . = ALIGN(1<<SECTION_SHIFT);
65 _etext = .; /* End of text section */
70 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
71 __start___ex_table = .;
72 ARM_MMU_KEEP(*(__ex_table))
73 __stop___ex_table = .;
76 #ifdef CONFIG_ARM_UNWIND
82 #ifdef CONFIG_STRICT_KERNEL_RWX
83 . = ALIGN(1<<SECTION_SHIFT);
92 ARM_EXIT_KEEP(EXIT_TEXT)
95 ARM_CPU_DISCARD(PROC_INFO)
98 __arch_info_begin = .;
103 __tagtable_begin = .;
107 #ifdef CONFIG_SMP_ON_UP
115 __pv_table_begin = .;
120 INIT_DATA_SECTION(16)
123 ARM_EXIT_KEEP(EXIT_DATA)
127 PERCPU_SECTION(L1_CACHE_BYTES)
130 #ifdef CONFIG_HAVE_TCM
134 #ifdef CONFIG_STRICT_KERNEL_RWX
135 . = ALIGN(1<<SECTION_SHIFT);
137 . = ALIGN(THREAD_SIZE);
142 RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
151 #ifdef CONFIG_STRICT_KERNEL_RWX
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.
157 __start_rodata_section_aligned = ALIGN(__start_rodata, 1 << SECTION_SHIFT);
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)
165 ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
166 ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")
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.
173 ASSERT(__hyp_idmap_text_end - (__hyp_idmap_text_start & PAGE_MASK) <= PAGE_SIZE,
174 "HYP init code too big or misaligned")
176 #endif /* CONFIG_XIP_KERNEL */